Merge pull request #570 from blockscout/verification-api

contract verification: api

lib/api/nodeFetch.ts

@@ -13,9 +13,10 @@ export default function fetchFactory(
   // first arg can be only a string
   // FIXME migrate to RequestInfo later if needed
   return function fetch(url: string, init?: RequestInit): Promise<Response> {
+    const incomingContentType = _req.headers['content-type'];
     const headers = {
       accept: 'application/json',
-      'content-type': 'application/json',
+      'content-type': incomingContentType?.match(/^multipart\/form-data/) ? incomingContentType : 'application/json',
       cookie: `${ cookies.NAMES.API_TOKEN }=${ _req.cookies[cookies.NAMES.API_TOKEN] }`,
     };
 
@@ -25,10 +26,23 @@ export default function fetchFactory(
       req: _req,
     });
 
+    const body = (() => {
+      const _body = init?.body;
+      if (!_body) {
+        return;
+      }
+
+      if (typeof _body === 'string') {
+        return _body;
+      }
+
+      return JSON.stringify(_body);
+    })();
+
     return nodeFetch(url, {
       ...init,
       headers,
-      body: init?.body ? JSON.stringify(init.body) : undefined,
+      body,
     });
   };
 }

lib/api/resources.ts

@@ -17,7 +17,7 @@ import type {
 import type { AddressesResponse } from 'types/api/addresses';
 import type { BlocksResponse, BlockTransactionsResponse, Block, BlockFilters } from 'types/api/block';
 import type { ChartMarketResponse, ChartTransactionResponse } from 'types/api/charts';
-import type { SmartContract, SmartContractReadMethod, SmartContractWriteMethod } from 'types/api/contract';
+import type { SmartContract, SmartContractReadMethod, SmartContractWriteMethod, SmartContractVerificationConfig } from 'types/api/contract';
 import type { IndexingStatus } from 'types/api/indexingStatus';
 import type { InternalTransactionsResponse } from 'types/api/internalTransaction';
 import type { LogsResponseTx, LogsResponseAddress } from 'types/api/log';
@@ -212,6 +212,12 @@ export const RESOURCES = {
   contract_methods_write_proxy: {
     path: '/api/v2/smart-contracts/:id/methods-write-proxy',
   },
+  contract_verification_config: {
+    path: '/api/v2/smart-contracts/verification/config',
+  },
+  contract_verification_via: {
+    path: '/api/v2/smart-contracts/:id/verification/via/:method',
+  },
 
   // TOKEN
   token: {
@@ -365,6 +371,7 @@ Q extends 'contract_methods_read_proxy' ? Array<SmartContractReadMethod> :
 Q extends 'contract_methods_write' ? Array<SmartContractWriteMethod> :
 Q extends 'contract_methods_write_proxy' ? Array<SmartContractWriteMethod> :
 Q extends 'visualize_sol2uml' ? VisualizedContract :
+Q extends 'contract_verification_config' ? SmartContractVerificationConfig :
 never;
 /* eslint-enable @typescript-eslint/indent */
 

lib/consts.ts

@@ -12,3 +12,6 @@ export const DAY = 24 * HOUR;
 export const WEEK = 7 * DAY;
 export const MONTH = 30 * DAY;
 export const YEAR = 365 * DAY;
+
+export const Kb = 1_000;
+export const Mb = 1_000 * Kb;

lib/hooks/useFetch.tsx

@@ -11,7 +11,7 @@ export interface Params {
   method?: RequestInit['method'];
   headers?: RequestInit['headers'];
   signal?: RequestInit['signal'];
-  body?: Record<string, unknown>;
+  body?: Record<string, unknown> | FormData;
   credentials?: RequestCredentials;
 }
 
@@ -20,13 +20,27 @@ export default function useFetch() {
   const { token } = queryClient.getQueryData<CsrfData>(getResourceKey('csrf')) || {};
 
   return React.useCallback(<Success, Error>(path: string, params?: Params): Promise<Success | ResourceError<Error>> => {
-    const hasBody = params?.method && ![ 'GET', 'HEAD' ].includes(params.method);
+    const _body = params?.body;
+    const isFormData = _body instanceof FormData;
+    const isBodyAllowed = params?.method && ![ 'GET', 'HEAD' ].includes(params.method);
+
+    const body: FormData | string | undefined = (() => {
+      if (!isBodyAllowed) {
+        return;
+      }
+
+      if (isFormData) {
+        return _body;
+      }
+
+      return JSON.stringify({ ..._body, _csrf_token: token });
+    })();
 
     const reqParams = {
       ...params,
-      body: hasBody ? JSON.stringify({ ...params.body, _csrf_token: token }) : undefined,
+      body,
       headers: {
-        ...(hasBody ? { 'Content-type': 'application/json' } : undefined),
+        ...(isBodyAllowed && !isFormData ? { 'Content-type': 'application/json' } : undefined),
         ...params?.headers,
       },
     };

lib/socket/context.tsx

+// https://hexdocs.pm/phoenix/js/
 import type { SocketConnectOption } from 'phoenix';
 import { Socket } from 'phoenix';
 import React, { useEffect, useState } from 'react';

lib/socket/types.ts

@@ -2,6 +2,7 @@ import type { Channel } from 'phoenix';
 
 import type { AddressCoinBalanceHistoryItem } from 'types/api/address';
 import type { NewBlockSocketResponse } from 'types/api/block';
+import type { SmartContractVerificationResponse } from 'types/api/contract';
 import type { TokenTransfer } from 'types/api/tokenTransfer';
 import type { Transaction } from 'types/api/transaction';
 
@@ -19,6 +20,7 @@ SocketMessage.AddressTxs |
 SocketMessage.AddressTxsPending |
 SocketMessage.AddressTokenTransfer |
 SocketMessage.TokenTransfers |
+SocketMessage.ContractVerification |
 SocketMessage.Unknown;
 
 interface SocketMessageParamsGeneric<Event extends string | undefined, Payload extends object | unknown> {
@@ -43,6 +45,7 @@ export namespace SocketMessage {
   export type AddressTxs = SocketMessageParamsGeneric<'transaction', { transaction: Transaction }>;
   export type AddressTxsPending = SocketMessageParamsGeneric<'pending_transaction', { transaction: Transaction }>;
   export type AddressTokenTransfer = SocketMessageParamsGeneric<'token_transfer', { token_transfer: TokenTransfer }>;
-  export type TokenTransfers = SocketMessageParamsGeneric<'token_transfer', {token_transfer: number }>
+  export type TokenTransfers = SocketMessageParamsGeneric<'token_transfer', {token_transfer: number }>;
+  export type ContractVerification = SocketMessageParamsGeneric<'verification_result', SmartContractVerificationResponse>;
   export type Unknown = SocketMessageParamsGeneric<undefined, unknown>;
 }

lib/socket/useSocketChannel.tsx

@@ -60,7 +60,11 @@ export default function useSocketChannel({ topic, params, isDisabled, onJoin, on
     } else {
       ch = socket.channel(topic);
       CHANNEL_REGISTRY[topic] = ch;
-      ch.join().receive('ok', (message) => onJoinRef.current?.(ch, message));
+      ch.join()
+        .receive('ok', (message) => onJoinRef.current?.(ch, message))
+        .receive('error', () => {
+          onSocketError?.();
+        });
     }
 
     setChannel(ch);
@@ -70,7 +74,7 @@ export default function useSocketChannel({ topic, params, isDisabled, onJoin, on
       delete CHANNEL_REGISTRY[topic];
       setChannel(undefined);
     };
-  }, [ socket, topic, params, isDisabled ]);
+  }, [ socket, topic, params, isDisabled, onSocketError ]);
 
   return channel;
 }

pages/_app.tsx

@@ -35,10 +35,13 @@ function MyApp({ Component, pageProps }: AppProps) {
     },
   }));
 
-  const renderErrorScreen = React.useCallback(() => {
+  const renderErrorScreen = React.useCallback((error?: Error) => {
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    const statusCode = (error?.cause as any)?.status || 500;
+
     return (
       <AppError
-        statusCode={ 500 }
+        statusCode={ statusCode }
         height="100vh"
         display="flex"
         flexDirection="column"

theme/components/Form.ts

 import { formAnatomy as parts } from '@chakra-ui/anatomy';
 import { createMultiStyleConfigHelpers } from '@chakra-ui/styled-system';
 import type { StyleFunctionProps } from '@chakra-ui/theme-tools';
-import { getColor } from '@chakra-ui/theme-tools';
+import { getColor, mode } from '@chakra-ui/theme-tools';
 
 import getDefaultFormColors from '../utils/getDefaultFormColors';
 import FancySelect from './FancySelect';
@@ -81,11 +81,18 @@ function getFloatingVariantStylesForSize(size: 'md' | 'lg', props: StyleFunction
       'input:not(:placeholder-shown), textarea:not(:placeholder-shown)': activeInputStyles,
       [`
         input[disabled] + label, 
-        textarea[disabled] + label,
         &[aria-disabled=true] label
       `]: {
         backgroundColor: 'transparent',
       },
+      // in textarea bg of label could not be transparent; it should match the background color of input but without alpha
+      // so we have to use non-standard colors here
+      'textarea[disabled] + label': {
+        backgroundColor: mode('#ececec', '#232425')(props),
+      },
+      'textarea[disabled] + label[data-in-modal=true]': {
+        backgroundColor: mode('#ececec', '#292b34')(props),
+      },
 
       // indicator styles
       'input:not(:placeholder-shown) + label .chakra-form__required-indicator, textarea:not(:placeholder-shown) + label .chakra-form__required-indicator': {

tsconfig.json

 {
   "compilerOptions": {
-    "target": "es5",
+    "target": "es6",
     "lib": ["dom", "dom.iterable", "esnext"],
     "allowJs": true,
     "skipLibCheck": true,

types/api/contract.ts

@@ -113,3 +113,34 @@ export interface SmartContractQueryMethodReadError {
 }
 
 export type SmartContractQueryMethodRead = SmartContractQueryMethodReadSuccess | SmartContractQueryMethodReadError;
+
+// VERIFICATION
+
+export type SmartContractVerificationMethod = 'flattened-code' | 'standard-input' | 'sourcify' | 'multi-part' | 'vyper-code' | 'vyper-multi-part';
+
+export interface SmartContractVerificationConfigRaw {
+  solidity_compiler_versions: Array<string>;
+  solidity_evm_versions: Array<string>;
+  verification_options: Array<string>;
+  vyper_compiler_versions: Array<string>;
+  vyper_evm_versions: Array<string>;
+}
+
+export interface SmartContractVerificationConfig extends SmartContractVerificationConfigRaw {
+  verification_options: Array<SmartContractVerificationMethod>;
+}
+
+export type SmartContractVerificationResponse = {
+  status: 'error';
+  errors: SmartContractVerificationError;
+} | {
+  status: 'success';
+}
+
+export interface SmartContractVerificationError {
+  contract_source_code?: Array<string>;
+  files?: Array<string>;
+  compiler_version?: Array<string>;
+  constructor_arguments?: Array<string>;
+  name?: Array<string>;
+}

ui/address/contract/ContractCode.tsx

@@ -129,7 +129,7 @@ const ContractCode = () => {
               <AddressLink type="address" hash={ data.verified_twin_address_hash } truncation="constant" ml={ 2 }/>
             </Address>
             <chakra.span mt={ 1 }>All functions displayed below are from ABI of that contract. In order to verify current contract, proceed with </chakra.span>
-            <LinkInternal href={ link('address_contract_verification', { id: data.verified_twin_address_hash }) }>Verify & Publish</LinkInternal>
+            <LinkInternal href={ link('address_contract_verification', { id: addressHash }) }>Verify & Publish</LinkInternal>
             <span> page</span>
           </Alert>
         ) }

ui/apiKey/ApiKeyModal/ApiKeyForm.tsx

@@ -103,7 +103,7 @@ const ApiKeyForm: React.FC<Props> = ({ data, onClose, setAlertVisible }) => {
           { ...field }
           disabled={ true }
         />
-        <FormLabel>Auto-generated API key token</FormLabel>
+        <FormLabel data-in-modal="true">Auto-generated API key token</FormLabel>
       </FormControl>
     );
   }, []);

ui/apiKey/ApiKeyModal/ApiKeyModal.tsx

@@ -12,7 +12,7 @@ type Props = {
   data?: ApiKey;
 }
 
-const AddressModal: React.FC<Props> = ({ isOpen, onClose, data }) => {
+const ApiKeyModal: React.FC<Props> = ({ isOpen, onClose, data }) => {
   const title = data ? 'Edit API key' : 'New API key';
   const text = !data ? 'Add an application name to identify your API key. Click the button below to auto-generate the associated key.' : '';
 
@@ -34,4 +34,4 @@ const AddressModal: React.FC<Props> = ({ isOpen, onClose, data }) => {
   );
 };
 
-export default AddressModal;
+export default ApiKeyModal;

ui/contractVerification/ContractVerificationForm.pw.tsx

 import { test, expect } from '@playwright/experimental-ct-react';
 import React from 'react';
 
+import type { SmartContractVerificationConfig } from 'types/api/contract';
+
 import TestApp from 'playwright/TestApp';
 
 import ContractVerificationForm from './ContractVerificationForm';
@@ -11,10 +13,49 @@ const hooksConfig = {
   },
 };
 
+const hash = '0x2F99338637F027CFB7494E46B49987457beCC6E3';
+const formConfig: SmartContractVerificationConfig = {
+  solidity_compiler_versions: [
+    'v0.8.17+commit.8df45f5f',
+    'v0.8.16+commit.07a7930e',
+    'v0.8.15+commit.e14f2714',
+    'v0.8.18-nightly.2022.11.23+commit.eb2f874e',
+    'v0.8.17-nightly.2022.8.24+commit.22a0c46e',
+    'v0.8.16-nightly.2022.7.6+commit.b6f11b33',
+  ],
+  solidity_evm_versions: [
+    'default',
+    'london',
+    'berlin',
+  ],
+  verification_options: [
+    'flattened-code',
+    'standard-input',
+    'sourcify',
+    'multi-part',
+    'vyper-code',
+  ],
+  vyper_compiler_versions: [
+    'v0.3.7+commit.6020b8bb',
+    'v0.3.1+commit.0463ea4c',
+    'v0.3.0+commit.8a23feb',
+    'v0.2.16+commit.59e1bdd',
+    'v0.2.3+commit.006968f',
+    'v0.2.2+commit.337c2ef',
+    'v0.1.0-beta.17+commit.0671b7b',
+  ],
+  vyper_evm_versions: [
+    'byzantium',
+    'constantinople',
+    'petersburg',
+    'istanbul',
+  ],
+};
+
 test('flatten source code method +@dark-mode +@mobile', async({ mount, page }) => {
   const component = await mount(
     <TestApp>
-      <ContractVerificationForm/>
+      <ContractVerificationForm config={ formConfig } hash={ hash }/>
     </TestApp>,
     { hooksConfig },
   );
@@ -30,7 +71,7 @@ test('flatten source code method +@dark-mode +@mobile', async({ mount, page }) =
 test('standard input json method', async({ mount, page }) => {
   const component = await mount(
     <TestApp>
-      <ContractVerificationForm/>
+      <ContractVerificationForm config={ formConfig } hash={ hash }/>
     </TestApp>,
     { hooksConfig },
   );
@@ -43,7 +84,7 @@ test('standard input json method', async({ mount, page }) => {
 test('sourcify method +@dark-mode +@mobile', async({ mount, page }) => {
   const component = await mount(
     <TestApp>
-      <ContractVerificationForm/>
+      <ContractVerificationForm config={ formConfig } hash={ hash }/>
     </TestApp>,
     { hooksConfig },
   );
@@ -62,7 +103,7 @@ test('sourcify method +@dark-mode +@mobile', async({ mount, page }) => {
 test('multi-part files method', async({ mount, page }) => {
   const component = await mount(
     <TestApp>
-      <ContractVerificationForm/>
+      <ContractVerificationForm config={ formConfig } hash={ hash }/>
     </TestApp>,
     { hooksConfig },
   );
@@ -75,7 +116,7 @@ test('multi-part files method', async({ mount, page }) => {
 test('vyper contract method', async({ mount, page }) => {
   const component = await mount(
     <TestApp>
-      <ContractVerificationForm/>
+      <ContractVerificationForm config={ formConfig } hash={ hash }/>
     </TestApp>,
     { hooksConfig },
   );

ui/contractVerification/ContractVerificationForm.tsx

@@ -4,54 +4,140 @@ import React from 'react';
 import type { SubmitHandler } from 'react-hook-form';
 import { useForm, FormProvider } from 'react-hook-form';
 
-import type { FormFields, VerificationMethod } from './types';
+import type { FormFields } from './types';
+import type { SocketMessage } from 'lib/socket/types';
+import type { SmartContractVerificationMethod, SmartContractVerificationConfig } from 'types/api/contract';
 
-import delay from 'lib/delay';
+import useApiFetch from 'lib/api/useApiFetch';
+import useToast from 'lib/hooks/useToast';
+import link from 'lib/link/link';
+import useSocketChannel from 'lib/socket/useSocketChannel';
+import useSocketMessage from 'lib/socket/useSocketMessage';
 
-import ContractVerificationFieldMethod, { VERIFICATION_METHODS } from './fields/ContractVerificationFieldMethod';
+import ContractVerificationFieldMethod from './fields/ContractVerificationFieldMethod';
 import ContractVerificationFlattenSourceCode from './methods/ContractVerificationFlattenSourceCode';
 import ContractVerificationMultiPartFile from './methods/ContractVerificationMultiPartFile';
 import ContractVerificationSourcify from './methods/ContractVerificationSourcify';
 import ContractVerificationStandardInput from './methods/ContractVerificationStandardInput';
 import ContractVerificationVyperContract from './methods/ContractVerificationVyperContract';
+import ContractVerificationVyperMultiPartFile from './methods/ContractVerificationVyperMultiPartFile';
+import { prepareRequestBody, formatSocketErrors } from './utils';
 
-const METHODS = {
-  flatten_source_code: <ContractVerificationFlattenSourceCode/>,
-  standard_input: <ContractVerificationStandardInput/>,
+const METHOD_COMPONENTS = {
+  'flattened-code': <ContractVerificationFlattenSourceCode/>,
+  'standard-input': <ContractVerificationStandardInput/>,
   sourcify: <ContractVerificationSourcify/>,
-  multi_part_file: <ContractVerificationMultiPartFile/>,
-  vyper_contract: <ContractVerificationVyperContract/>,
+  'multi-part': <ContractVerificationMultiPartFile/>,
+  'vyper-code': <ContractVerificationVyperContract/>,
+  'vyper-multi-part': <ContractVerificationVyperMultiPartFile/>,
 };
 
-const ContractVerificationForm = () => {
-  const router = useRouter();
-  const methodFromQuery = router.query.method?.toString() as VerificationMethod;
+interface Props {
+  method?: SmartContractVerificationMethod;
+  config: SmartContractVerificationConfig;
+  hash: string;
+}
+
+const ContractVerificationForm = ({ method: methodFromQuery, config, hash }: Props) => {
   const formApi = useForm<FormFields>({
     mode: 'onBlur',
     defaultValues: {
-      method: VERIFICATION_METHODS.includes(methodFromQuery) ? methodFromQuery : undefined,
+      method: methodFromQuery,
     },
   });
-  const { control, handleSubmit, watch, formState } = formApi;
+  const { control, handleSubmit, watch, formState, setError } = formApi;
+  const submitPromiseResolver = React.useRef<(value: unknown) => void>();
+
+  const apiFetch = useApiFetch();
+  const toast = useToast();
+  const router = useRouter();
 
   const onFormSubmit: SubmitHandler<FormFields> = React.useCallback(async(data) => {
-    // eslint-disable-next-line no-console
-    console.log('__>__', data);
-    await delay(5_000);
-  }, []);
+    const body = prepareRequestBody(data);
 
-  const method = watch('method');
+    try {
+      await apiFetch('contract_verification_via', {
+        pathParams: { method: data.method, id: hash },
+        fetchParams: {
+          method: 'POST',
+          body,
+        },
+      });
+    } catch (error) {
+      return;
+    }
+
+    return new Promise((resolve) => {
+      submitPromiseResolver.current = resolve;
+    });
+  }, [ apiFetch, hash ]);
+
+  const handleNewSocketMessage: SocketMessage.ContractVerification['handler'] = React.useCallback((payload) => {
+    if (payload.status === 'error') {
+      const errors = formatSocketErrors(payload.errors);
+      errors.forEach(([ field, error ]) => setError(field, error));
+      submitPromiseResolver.current?.(null);
+      return;
+    }
+
+    toast({
+      position: 'top-right',
+      title: 'Success',
+      description: 'Contract is successfully verified.',
+      status: 'success',
+      variant: 'subtle',
+      isClosable: true,
+      onCloseComplete: () => {
+        router.push(link('address_index', { id: hash }, { tab: 'contract' }), undefined, { shallow: true });
+      },
+    });
+  }, [ hash, router, setError, toast ]);
+
+  const handleSocketError = React.useCallback(() => {
+    if (!formState.isSubmitting) {
+      return;
+    }
 
-  const content = METHODS[method] || null;
+    submitPromiseResolver.current?.(null);
+
+    const toastId = 'socket-error';
+    !toast.isActive(toastId) && toast({
+      id: toastId,
+      position: 'top-right',
+      title: 'Error',
+      description: 'There was an error with socket connection. Try again later.',
+      status: 'error',
+      variant: 'subtle',
+      isClosable: true,
+    });
+  }, [ formState.isSubmitting, toast ]);
+
+  const channel = useSocketChannel({
+    topic: `addresses:${ hash.toLowerCase() }`,
+    onSocketClose: handleSocketError,
+    onSocketError: handleSocketError,
+    isDisabled: false,
+  });
+  useSocketMessage({
+    channel,
+    event: 'verification_result',
+    handler: handleNewSocketMessage,
+  });
+
+  const method = watch('method');
+  const content = METHOD_COMPONENTS[method] || null;
 
   return (
     <FormProvider { ...formApi }>
       <chakra.form
         noValidate
         onSubmit={ handleSubmit(onFormSubmit) }
-        mt={ 12 }
       >
-        <ContractVerificationFieldMethod control={ control } isDisabled={ Boolean(method) }/>
+        <ContractVerificationFieldMethod
+          control={ control }
+          isDisabled={ Boolean(method) }
+          methods={ config.verification_options }
+        />
         { content }
         { Boolean(method) && (
           <Button

ui/contractVerification/fields/ContractVerificationFieldConstArgs.tsx → ui/contractVerification/fields/ContractVerificationFieldAutodetectArgs.tsx

@@ -7,27 +7,39 @@ import type { FormFields } from '../types';
 import CheckboxInput from 'ui/shared/CheckboxInput';
 
 import ContractVerificationFormRow from '../ContractVerificationFormRow';
+import ContractVerificationFieldConstructorArgs from './ContractVerificationFieldConstructorArgs';
 
-const ContractVerificationFieldConstArgs = () => {
-  const { formState, control } = useFormContext<FormFields>();
+const ContractVerificationFieldAutodetectArgs = () => {
+  const [ isOn, setIsOn ] = React.useState(true);
+  const { formState, control, resetField } = useFormContext<FormFields>();
 
-  const renderControl = React.useCallback(({ field }: {field: ControllerRenderProps<FormFields, 'constructor_args'>}) => (
-    <CheckboxInput<FormFields, 'constructor_args'>
+  const handleCheckboxChange = React.useCallback(() => {
+    !isOn && resetField('constructor_args');
+    setIsOn(prev => !prev);
+  }, [ isOn, resetField ]);
+
+  const renderControl = React.useCallback(({ field }: {field: ControllerRenderProps<FormFields, 'autodetect_constructor_args'>}) => (
+    <CheckboxInput<FormFields, 'autodetect_constructor_args'>
       text="Try to fetch constructor arguments automatically"
       field={ field }
       isDisabled={ formState.isSubmitting }
+      onChange={ handleCheckboxChange }
     />
-  ), [ formState.isSubmitting ]);
+  ), [ formState.isSubmitting, handleCheckboxChange ]);
 
   return (
+    <>
       <ContractVerificationFormRow>
         <Controller
-        name="constructor_args"
+          name="autodetect_constructor_args"
           control={ control }
           render={ renderControl }
+          defaultValue={ true }
         />
       </ContractVerificationFormRow>
+      { !isOn && <ContractVerificationFieldConstructorArgs/> }
+    </>
   );
 };
 
-export default React.memo(ContractVerificationFieldConstArgs);
+export default React.memo(ContractVerificationFieldAutodetectArgs);

ui/contractVerification/fields/ContractVerificationFieldCode.tsx

@@ -5,6 +5,7 @@ import { useFormContext, Controller } from 'react-hook-form';
 
 import type { FormFields } from '../types';
 
+import FieldError from 'ui/shared/forms/FieldError';
 import InputPlaceholder from 'ui/shared/InputPlaceholder';
 
 import ContractVerificationFormRow from '../ContractVerificationFormRow';
@@ -27,7 +28,8 @@ const ContractVerificationFieldCode = ({ isVyper }: Props) => {
           isDisabled={ formState.isSubmitting }
           required
         />
-        <InputPlaceholder text="Contract code" error={ error }/>
+        <InputPlaceholder text="Contract code"/>
+        { error?.message && <FieldError message={ error?.message }/> }
       </FormControl>
     );
   }, [ formState.errors, formState.isSubmitting ]);

ui/contractVerification/fields/ContractVerificationFieldCompiler.tsx

-import { Code, Checkbox } from '@chakra-ui/react';
+import { Code } from '@chakra-ui/react';
+import { useQueryClient } from '@tanstack/react-query';
 import React from 'react';
 import type { ControllerRenderProps } from 'react-hook-form';
 import { useFormContext, Controller } from 'react-hook-form';
 
 import type { FormFields } from '../types';
+import type { SmartContractVerificationConfig } from 'types/api/contract';
 
+import { getResourceKey } from 'lib/api/useApiQuery';
 import useIsMobile from 'lib/hooks/useIsMobile';
 import FancySelect from 'ui/shared/FancySelect/FancySelect';
 
 import ContractVerificationFormRow from '../ContractVerificationFormRow';
 
-const COMPILERS = [
-  'v0.8.17+commit.8df45f5f',
-  'v0.8.16+commit.07a7930e',
-  'v0.8.15+commit.e14f2714',
-];
-
-const COMPILERS_NIGHTLY = [
-  'v0.8.18-nightly.2022.11.23+commit.eb2f874e',
-  'v0.8.17-nightly.2022.8.24+commit.22a0c46e',
-  'v0.8.16-nightly.2022.7.6+commit.b6f11b33',
-];
+const OPTIONS_LIMIT = 50;
 
 interface Props {
   isVyper?: boolean;
 }
 
 const ContractVerificationFieldCompiler = ({ isVyper }: Props) => {
-  const [ isNightly, setIsNightly ] = React.useState(false);
-  const { formState, control, getValues, resetField } = useFormContext<FormFields>();
+  const { formState, control } = useFormContext<FormFields>();
   const isMobile = useIsMobile();
+  const queryClient = useQueryClient();
+  const config = queryClient.getQueryData<SmartContractVerificationConfig>(getResourceKey('contract_verification_config'));
 
   const options = React.useMemo(() => (
-    [
-      ...COMPILERS, ...(isNightly ? COMPILERS_NIGHTLY : []),
-    ].map((option) => ({ label: option, value: option }))
-  ), [ isNightly ]);
+    (isVyper ? config?.vyper_compiler_versions : config?.solidity_compiler_versions)?.map((option) => ({ label: option, value: option })) || []
+  ), [ config?.solidity_compiler_versions, config?.vyper_compiler_versions, isVyper ]);
 
-  const handleCheckboxChange = React.useCallback(() => {
-    if (isNightly) {
-      const field = getValues('compiler');
-      field.value.includes('nightly') && resetField('compiler', { defaultValue: null });
+  const loadOptions = React.useCallback(async(inputValue: string) => {
+    return options
+      .filter(({ label }) => {
+        if (!inputValue) {
+          return !label.toLowerCase().includes('nightly');
         }
-    setIsNightly(prev => !prev);
-  }, [ getValues, isNightly, resetField ]);
+
+        return label.toLowerCase().includes(inputValue.toLowerCase());
+      })
+      .slice(0, OPTIONS_LIMIT);
+  }, [ options ]);
 
   const renderControl = React.useCallback(({ field }: {field: ControllerRenderProps<FormFields, 'compiler'>}) => {
     const error = 'compiler' in formState.errors ? formState.errors.compiler : undefined;
@@ -51,36 +47,26 @@ const ContractVerificationFieldCompiler = ({ isVyper }: Props) => {
     return (
       <FancySelect
         { ...field }
-        options={ options }
+        loadOptions={ loadOptions }
+        defaultOptions
         size={ isMobile ? 'md' : 'lg' }
         placeholder="Compiler"
         isDisabled={ formState.isSubmitting }
         error={ error }
         isRequired
+        isAsync
       />
     );
-  }, [ formState.errors, formState.isSubmitting, isMobile, options ]);
+  }, [ formState.errors, formState.isSubmitting, isMobile, loadOptions ]);
 
   return (
     <ContractVerificationFormRow>
-      <>
       <Controller
         name="compiler"
         control={ control }
         render={ renderControl }
         rules={{ required: true }}
       />
-        { !isVyper && (
-          <Checkbox
-            size="lg"
-            mt={ 3 }
-            onChange={ handleCheckboxChange }
-            isDisabled={ formState.isSubmitting }
-          >
-            Include nightly builds
-          </Checkbox>
-        ) }
-      </>
       { isVyper ? null : (
         <>
           <span>The compiler version is specified in </span>

ui/contractVerification/fields/ContractVerificationFieldAbiEncodedArgs.tsx → ui/contractVerification/fields/ContractVerificationFieldConstructorArgs.tsx

@@ -5,32 +5,39 @@ import { Controller, useFormContext } from 'react-hook-form';
 
 import type { FormFields } from '../types';
 
+import FieldError from 'ui/shared/forms/FieldError';
 import InputPlaceholder from 'ui/shared/InputPlaceholder';
 
 import ContractVerificationFormRow from '../ContractVerificationFormRow';
 
-const ContractVerificationFieldAbiEncodedArgs = () => {
+const ContractVerificationFieldConstructorArgs = () => {
   const { formState, control } = useFormContext<FormFields>();
 
-  const renderControl = React.useCallback(({ field }: {field: ControllerRenderProps<FormFields, 'abi_encoded_args'>}) => {
+  const renderControl = React.useCallback(({ field }: {field: ControllerRenderProps<FormFields, 'constructor_args'>}) => {
+    const error = 'constructor_args' in formState.errors ? formState.errors.constructor_args : undefined;
+
     return (
-      <FormControl variant="floating" id={ field.name } size={{ base: 'md', lg: 'lg' }}>
+      <FormControl variant="floating" id={ field.name } size={{ base: 'md', lg: 'lg' }} isRequired>
         <Textarea
           { ...field }
           maxLength={ 255 }
           isDisabled={ formState.isSubmitting }
+          isInvalid={ Boolean(error) }
+          required
         />
         <InputPlaceholder text="ABI-encoded Constructor Arguments"/>
+        { error?.message && <FieldError message={ error?.message }/> }
       </FormControl>
     );
-  }, [ formState.isSubmitting ]);
+  }, [ formState.errors, formState.isSubmitting ]);
 
   return (
     <ContractVerificationFormRow>
       <Controller
-        name="abi_encoded_args"
+        name="constructor_args"
         control={ control }
         render={ renderControl }
+        rules={{ required: true }}
       />
       <>
         <span>Add arguments in </span>
@@ -44,4 +51,4 @@ const ContractVerificationFieldAbiEncodedArgs = () => {
   );
 };
 
-export default React.memo(ContractVerificationFieldAbiEncodedArgs);
+export default React.memo(ContractVerificationFieldConstructorArgs);

ui/contractVerification/fields/ContractVerificationFieldEvmVersion.tsx

 import { Link } from '@chakra-ui/react';
+import { useQueryClient } from '@tanstack/react-query';
 import React from 'react';
 import type { ControllerRenderProps } from 'react-hook-form';
 import { useFormContext, Controller } from 'react-hook-form';
 
 import type { FormFields } from '../types';
+import type { SmartContractVerificationConfig } from 'types/api/contract';
 
+import { getResourceKey } from 'lib/api/useApiQuery';
 import useIsMobile from 'lib/hooks/useIsMobile';
 import FancySelect from 'ui/shared/FancySelect/FancySelect';
 
 import ContractVerificationFormRow from '../ContractVerificationFormRow';
 
-const VERSIONS = [
-  'default',
-  'london',
-  'berlin',
-];
+interface Props {
+  isVyper?: boolean;
+}
 
-const ContractVerificationFieldEvmVersion = () => {
+const ContractVerificationFieldEvmVersion = ({ isVyper }: Props) => {
   const { formState, control } = useFormContext<FormFields>();
   const isMobile = useIsMobile();
+  const queryClient = useQueryClient();
+  const config = queryClient.getQueryData<SmartContractVerificationConfig>(getResourceKey('contract_verification_config'));
 
   const options = React.useMemo(() => (
-    VERSIONS.map((option) => ({ label: option, value: option }))
-  ), [ ]);
+    (isVyper ? config?.vyper_evm_versions : config?.solidity_evm_versions)?.map((option) => ({ label: option, value: option })) || []
+  ), [ config?.solidity_evm_versions, config?.vyper_evm_versions, isVyper ]);
 
   const renderControl = React.useCallback(({ field }: {field: ControllerRenderProps<FormFields, 'evm_version'>}) => {
     const error = 'evm_version' in formState.errors ? formState.errors.evm_version : undefined;

ui/contractVerification/fields/ContractVerificationFieldMethod.tsx

@@ -20,32 +20,26 @@ import React from 'react';
 import type { ControllerRenderProps, Control } from 'react-hook-form';
 import { Controller } from 'react-hook-form';
 
-import type { FormFields, VerificationMethod } from '../types';
+import type { FormFields } from '../types';
+import type { SmartContractVerificationMethod, SmartContractVerificationConfig } from 'types/api/contract';
 
 import infoIcon from 'icons/info.svg';
 
-export const VERIFICATION_METHODS: Array<VerificationMethod> = [
-  'flatten_source_code',
-  'standard_input',
-  'sourcify',
-  'multi_part_file',
-  'vyper_contract',
-];
-
 interface Props {
   control: Control<FormFields>;
   isDisabled?: boolean;
+  methods: SmartContractVerificationConfig['verification_options'];
 }
 
-const ContractVerificationFieldMethod = ({ control, isDisabled }: Props) => {
+const ContractVerificationFieldMethod = ({ control, isDisabled, methods }: Props) => {
   const [ isPopoverOpen, setIsPopoverOpen ] = useBoolean();
   const tooltipBg = useColorModeValue('gray.700', 'gray.900');
 
-  const renderItem = React.useCallback((method: VerificationMethod) => {
+  const renderItem = React.useCallback((method: SmartContractVerificationMethod) => {
     switch (method) {
-      case 'flatten_source_code':
+      case 'flattened-code':
         return 'Via flattened source code';
-      case 'standard_input':
+      case 'standard-input':
         return (
           <>
             <span>Via standard </span>
@@ -91,10 +85,12 @@ const ContractVerificationFieldMethod = ({ control, isDisabled }: Props) => {
             </Popover>
           </>
         );
-      case 'multi_part_file':
+      case 'multi-part':
         return 'Via multi-part files';
-      case 'vyper_contract':
+      case 'vyper-code':
         return 'Vyper contract';
+      case 'vyper-multi-part':
+        return 'Via multi-part Vyper files';
 
       default:
         break;
@@ -103,15 +99,15 @@ const ContractVerificationFieldMethod = ({ control, isDisabled }: Props) => {
 
   const renderRadioGroup = React.useCallback(({ field }: {field: ControllerRenderProps<FormFields, 'method'>}) => {
     return (
-      <RadioGroup defaultValue="add" colorScheme="blue" isDisabled={ isDisabled } { ...field }>
+      <RadioGroup defaultValue="add" colorScheme="blue" isDisabled={ isDisabled } isFocusable={ !isDisabled } { ...field } >
         <Stack spacing={ 4 }>
-          { VERIFICATION_METHODS.map((method) => {
+          { methods.map((method) => {
             return <Radio key={ method } value={ method } size="lg">{ renderItem(method) }</Radio>;
           }) }
         </Stack>
       </RadioGroup>
     );
-  }, [ isDisabled, renderItem ]);
+  }, [ isDisabled, methods, renderItem ]);
 
   return (
     <section>

ui/contractVerification/fields/ContractVerificationFieldOptimization.tsx

@@ -11,7 +11,7 @@ import InputPlaceholder from 'ui/shared/InputPlaceholder';
 import ContractVerificationFormRow from '../ContractVerificationFormRow';
 
 const ContractVerificationFieldOptimization = () => {
-  const [ isEnabled, setIsEnabled ] = React.useState(false);
+  const [ isEnabled, setIsEnabled ] = React.useState(true);
   const { formState, control } = useFormContext<FormFields>();
 
   const handleCheckboxChange = React.useCallback(() => {
@@ -49,6 +49,7 @@ const ContractVerificationFieldOptimization = () => {
           name="is_optimization_enabled"
           control={ control }
           render={ renderCheckboxControl }
+          defaultValue={ true }
         />
       </ContractVerificationFormRow>
       { isEnabled && (
@@ -58,7 +59,7 @@ const ContractVerificationFieldOptimization = () => {
             control={ control }
             render={ renderInputControl }
             rules={{ required: true }}
-            defaultValue=""
+            defaultValue="200"
           />
         </ContractVerificationFormRow>
       ) }

ui/contractVerification/fields/ContractVerificationFieldSources.tsx

-import { Text, Button, Box, chakra } from '@chakra-ui/react';
+import { Text, Button, Box, chakra, Flex } from '@chakra-ui/react';
 import React from 'react';
-import type { ControllerRenderProps } from 'react-hook-form';
+import type { ControllerRenderProps, FieldPathValue, ValidateResult } from 'react-hook-form';
 import { Controller, useFormContext } from 'react-hook-form';
 
 import type { FormFields } from '../types';
 
+import { Mb } from 'lib/consts';
+// import DragAndDropArea from 'ui/shared/forms/DragAndDropArea';
+import FieldError from 'ui/shared/forms/FieldError';
 import FileInput from 'ui/shared/forms/FileInput';
 import FileSnippet from 'ui/shared/forms/FileSnippet';
 
 import ContractVerificationFormRow from '../ContractVerificationFormRow';
 
+type FileTypes = '.sol' | '.yul' | '.json' | '.vy'
+
 interface Props {
-  accept?: string;
+  fileTypes: Array<FileTypes>;
   multiple?: boolean;
   title: string;
   className?: string;
   hint: string;
 }
 
-const ContractVerificationFieldSources = ({ accept, multiple, title, className, hint }: Props) => {
-  const { setValue, getValues, control, formState } = useFormContext<FormFields>();
+const ContractVerificationFieldSources = ({ fileTypes, multiple, title, className, hint }: Props) => {
+  const { setValue, getValues, control, formState, clearErrors } = useFormContext<FormFields>();
 
   const error = 'sources' in formState.errors ? formState.errors.sources : undefined;
+  const commonError = !error?.type?.startsWith('file_') ? error : undefined;
+  const fileError = error?.type?.startsWith('file_') ? error : undefined;
 
   const handleFileRemove = React.useCallback((index?: number) => {
     if (index === undefined) {
@@ -31,41 +38,89 @@ const ContractVerificationFieldSources = ({ accept, multiple, title, className,
     const value = getValues('sources').slice();
     value.splice(index, 1);
     setValue('sources', value);
+    clearErrors('sources');
 
-  }, [ getValues, setValue ]);
+  }, [ getValues, clearErrors, setValue ]);
 
   const renderFiles = React.useCallback((files: Array<File>) => {
+    const errorList = fileError?.message?.split(';');
+
     return (
-      <Box display="grid" gridTemplateColumns={{ base: '1fr', lg: '1fr 1fr' }} columnGap={ 3 } rowGap={ 3 }>
+      <Box display="grid" gridTemplateColumns={{ base: 'minmax(0, 1fr)', lg: 'minmax(0, 1fr) minmax(0, 1fr)' }} columnGap={ 3 } rowGap={ 3 }>
         { files.map((file, index) => (
+          <Box key={ file.name + file.lastModified + index }>
             <FileSnippet
-            key={ file.name + file.lastModified }
               file={ file }
               maxW="initial"
               onRemove={ handleFileRemove }
               index={ index }
               isDisabled={ formState.isSubmitting }
             />
+            { errorList?.[index] && <FieldError message={ errorList?.[index] } mt={ 1 } px={ 3 }/> }
+          </Box>
         )) }
       </Box>
     );
-  }, [ formState.isSubmitting, handleFileRemove ]);
+  }, [ formState.isSubmitting, handleFileRemove, fileError ]);
 
   const renderControl = React.useCallback(({ field }: {field: ControllerRenderProps<FormFields, 'sources'>}) => (
     <>
-      <FileInput<FormFields, 'sources'> accept={ accept } multiple={ multiple } field={ field }>
-        <Button variant="outline" size="sm" display={ field.value && field.value.length > 0 ? 'none' : 'block' }>
+      <FileInput<FormFields, 'sources'> accept={ fileTypes.join(',') } multiple={ multiple } field={ field }>
+        { () => (
+          <Flex
+            flexDir="column"
+            alignItems="flex-start"
+            rowGap={ 2 }
+            w="100%"
+            display={ field.value && field.value.length > 0 && !multiple ? 'none' : 'block' }
+            mb={ field.value && field.value.length > 0 ? 2 : 0 }
+          >
+            <Button
+              variant="outline"
+              size="sm"
+              // mb={ 2 }
+            >
               Upload file{ multiple ? 's' : '' }
             </Button>
+            { /* design is not ready */ }
+            { /* <DragAndDropArea onDrop={ onChange }/> */ }
+          </Flex>
+        ) }
       </FileInput>
       { field.value && field.value.length > 0 && renderFiles(field.value) }
-      { error && (
-        <Box fontSize="sm" mt={ 2 } color="error">
-          { error.type === 'required' ? 'Field is required' : error.message }
-        </Box>
-      ) }
+      { commonError?.message && <FieldError message={ commonError.type === 'required' ? 'Field is required' : commonError.message }/> }
     </>
-  ), [ accept, error, multiple, renderFiles ]);
+  ), [ fileTypes, commonError, multiple, renderFiles ]);
+
+  const validateFileType = React.useCallback(async(value: FieldPathValue<FormFields, 'sources'>): Promise<ValidateResult> => {
+    if (Array.isArray(value)) {
+      const errorText = `Wrong file type. Allowed files types are ${ fileTypes.join(',') }.`;
+      const errors = value.map(({ name }) => fileTypes.some((ext) => name.endsWith(ext)) ? '' : errorText);
+      if (errors.some((item) => item !== '')) {
+        return errors.join(';');
+      }
+    }
+    return true;
+  }, [ fileTypes ]);
+
+  const validateFileSize = React.useCallback(async(value: FieldPathValue<FormFields, 'sources'>): Promise<ValidateResult> => {
+    if (Array.isArray(value)) {
+      const FILE_SIZE_LIMIT = 20 * Mb;
+      const errors = value.map(({ size }) => size > FILE_SIZE_LIMIT ? 'File is too big. Maximum size is 20 Mb.' : '');
+      if (errors.some((item) => item !== '')) {
+        return errors.join(';');
+      }
+    }
+    return true;
+  }, []);
+
+  const rules = React.useMemo(() => ({
+    required: true,
+    validate: {
+      file_type: validateFileType,
+      file_size: validateFileSize,
+    },
+  }), [ validateFileSize, validateFileType ]);
 
   return (
     <>
@@ -77,7 +132,7 @@ const ContractVerificationFieldSources = ({ accept, multiple, title, className,
           name="sources"
           control={ control }
           render={ renderControl }
-          rules={{ required: true }}
+          rules={ rules }
         />
         { hint ? <span>{ hint }</span> : null }
       </ContractVerificationFormRow>

ui/contractVerification/methods/ContractVerificationFlattenSourceCode.tsx

 import React from 'react';
 
 import ContractVerificationMethod from '../ContractVerificationMethod';
+import ContractVerificationFieldAutodetectArgs from '../fields/ContractVerificationFieldAutodetectArgs';
 import ContractVerificationFieldCode from '../fields/ContractVerificationFieldCode';
 import ContractVerificationFieldCompiler from '../fields/ContractVerificationFieldCompiler';
-import ContractVerificationFieldConstArgs from '../fields/ContractVerificationFieldConstArgs';
 import ContractVerificationFieldEvmVersion from '../fields/ContractVerificationFieldEvmVersion';
 import ContractVerificationFieldIsYul from '../fields/ContractVerificationFieldIsYul';
 import ContractVerificationFieldLibraries from '../fields/ContractVerificationFieldLibraries';
@@ -19,7 +19,7 @@ const ContractVerificationFlattenSourceCode = () => {
       <ContractVerificationFieldEvmVersion/>
       <ContractVerificationFieldOptimization/>
       <ContractVerificationFieldCode/>
-      <ContractVerificationFieldConstArgs/>
+      <ContractVerificationFieldAutodetectArgs/>
       <ContractVerificationFieldLibraries/>
     </ContractVerificationMethod>
   );

ui/contractVerification/methods/ContractVerificationMultiPartFile.tsx

@@ -7,6 +7,8 @@ import ContractVerificationFieldLibraries from '../fields/ContractVerificationFi
 import ContractVerificationFieldOptimization from '../fields/ContractVerificationFieldOptimization';
 import ContractVerificationFieldSources from '../fields/ContractVerificationFieldSources';
 
+const FILE_TYPES = [ '.sol' as const, '.yul' as const ];
+
 const ContractVerificationMultiPartFile = () => {
   return (
     <ContractVerificationMethod title="New Solidity/Yul Smart Contract Verification">
@@ -14,7 +16,7 @@ const ContractVerificationMultiPartFile = () => {
       <ContractVerificationFieldEvmVersion/>
       <ContractVerificationFieldOptimization/>
       <ContractVerificationFieldSources
-        accept=".sol,.yul"
+        fileTypes={ FILE_TYPES }
         multiple
         title="Sources *.sol or *.yul files"
         hint="Upload all Solidity or Yul contract source files."

ui/contractVerification/methods/ContractVerificationSourcify.tsx

@@ -3,11 +3,13 @@ import React from 'react';
 import ContractVerificationMethod from '../ContractVerificationMethod';
 import ContractVerificationFieldSources from '../fields/ContractVerificationFieldSources';
 
+const FILE_TYPES = [ '.json' as const, '.sol' as const ];
+
 const ContractVerificationSourcify = () => {
   return (
     <ContractVerificationMethod title="New Smart Contract Verification">
       <ContractVerificationFieldSources
-        accept=".json"
+        fileTypes={ FILE_TYPES }
         multiple
         title="Sources and Metadata JSON" mt={ 0 }
         hint="Upload all Solidity contract source files and JSON metadata file(s) created during contract compilation."

ui/contractVerification/methods/ContractVerificationStandardInput.tsx

 import React from 'react';
 
 import ContractVerificationMethod from '../ContractVerificationMethod';
+import ContractVerificationFieldAutodetectArgs from '../fields/ContractVerificationFieldAutodetectArgs';
 import ContractVerificationFieldCompiler from '../fields/ContractVerificationFieldCompiler';
-import ContractVerificationFieldConstArgs from '../fields/ContractVerificationFieldConstArgs';
 import ContractVerificationFieldName from '../fields/ContractVerificationFieldName';
 import ContractVerificationFieldSources from '../fields/ContractVerificationFieldSources';
 
+const FILE_TYPES = [ '.json' as const ];
+
 const ContractVerificationStandardInput = () => {
   return (
     <ContractVerificationMethod title="New Smart Contract Verification">
       <ContractVerificationFieldName/>
       <ContractVerificationFieldCompiler/>
       <ContractVerificationFieldSources
-        accept=".json"
+        fileTypes={ FILE_TYPES }
         title="Standard Input JSON"
         hint="Upload the standard input JSON file created during contract compilation."
       />
-      <ContractVerificationFieldConstArgs/>
+      <ContractVerificationFieldAutodetectArgs/>
     </ContractVerificationMethod>
   );
 };

ui/contractVerification/methods/ContractVerificationVyperContract.tsx

 import React from 'react';
 
 import ContractVerificationMethod from '../ContractVerificationMethod';
-import ContractVerificationFieldAbiEncodedArgs from '../fields/ContractVerificationFieldAbiEncodedArgs';
 import ContractVerificationFieldCode from '../fields/ContractVerificationFieldCode';
 import ContractVerificationFieldCompiler from '../fields/ContractVerificationFieldCompiler';
+import ContractVerificationFieldConstructorArgs from '../fields/ContractVerificationFieldConstructorArgs';
 import ContractVerificationFieldName from '../fields/ContractVerificationFieldName';
 
 const ContractVerificationVyperContract = () => {
@@ -12,7 +12,7 @@ const ContractVerificationVyperContract = () => {
       <ContractVerificationFieldName hint="Must match the name specified in the code."/>
       <ContractVerificationFieldCompiler isVyper/>
       <ContractVerificationFieldCode isVyper/>
-      <ContractVerificationFieldAbiEncodedArgs/>
+      <ContractVerificationFieldConstructorArgs/>
     </ContractVerificationMethod>
   );
 };

ui/contractVerification/methods/ContractVerificationVyperMultiPartFile.tsx

+import React from 'react';
+
+import ContractVerificationMethod from '../ContractVerificationMethod';
+import ContractVerificationFieldCompiler from '../fields/ContractVerificationFieldCompiler';
+import ContractVerificationFieldEvmVersion from '../fields/ContractVerificationFieldEvmVersion';
+import ContractVerificationFieldSources from '../fields/ContractVerificationFieldSources';
+
+const FILE_TYPES = [ '.vy' as const ];
+
+const ContractVerificationVyperMultiPartFile = () => {
+  return (
+    <ContractVerificationMethod title="New Vyper Smart Contract Verification">
+      <ContractVerificationFieldCompiler isVyper/>
+      <ContractVerificationFieldEvmVersion isVyper/>
+      <ContractVerificationFieldSources
+        fileTypes={ FILE_TYPES }
+        multiple
+        title="Sources *.vy files"
+        hint="Upload all Vyper contract source files."
+      />
+    </ContractVerificationMethod>
+  );
+};
+
+export default React.memo(ContractVerificationVyperMultiPartFile);

ui/contractVerification/types.ts

 import type { Option } from 'ui/shared/FancySelect/types';
 
-export type VerificationMethod = 'flatten_source_code' | 'standard_input' | 'sourcify' | 'multi_part_file' | 'vyper_contract'
-
 export interface ContractLibrary {
   name: string;
   address: string;
 }
 export interface FormFieldsFlattenSourceCode {
-  method: 'flatten_source_code';
+  method: 'flattened-code';
   is_yul: boolean;
   name: string;
   compiler: Option;
@@ -15,15 +13,18 @@ export interface FormFieldsFlattenSourceCode {
   is_optimization_enabled: boolean;
   optimization_runs: string;
   code: string;
-  constructor_args: boolean;
+  autodetect_constructor_args: boolean;
+  constructor_args: string;
   libraries: Array<ContractLibrary>;
 }
 
 export interface FormFieldsStandardInput {
-  method: 'standard_input';
+  method: 'standard-input';
   name: string;
   compiler: Option;
   sources: Array<File>;
+  autodetect_constructor_args: boolean;
+  constructor_args: string;
 }
 
 export interface FormFieldsSourcify {
@@ -32,21 +33,29 @@ export interface FormFieldsSourcify {
 }
 
 export interface FormFieldsMultiPartFile {
-  method: 'multi_part_file';
+  method: 'multi-part';
   compiler: Option;
   evm_version: Option;
   is_optimization_enabled: boolean;
   optimization_runs: string;
   sources: Array<File>;
+  libraries: Array<ContractLibrary>;
 }
 
 export interface FormFieldsVyperContract {
-  method: 'vyper_contract';
+  method: 'vyper-code';
   name: string;
   compiler: Option;
   code: string;
-  abi_encoded_args: string;
+  constructor_args: string;
+}
+
+export interface FormFieldsVyperMultiPartFile {
+  method: 'vyper-multi-part';
+  compiler: Option;
+  evm_version: Option;
+  sources: Array<File>;
 }
 
 export type FormFields = FormFieldsFlattenSourceCode | FormFieldsStandardInput | FormFieldsSourcify |
-FormFieldsMultiPartFile | FormFieldsVyperContract;
+FormFieldsMultiPartFile | FormFieldsVyperContract | FormFieldsVyperMultiPartFile;

ui/contractVerification/utils.ts

+import type { FieldPath, ErrorOption } from 'react-hook-form';
+
+import type { ContractLibrary, FormFields } from './types';
+import type { SmartContractVerificationMethod, SmartContractVerificationError } from 'types/api/contract';
+
+import type { Params as FetchParams } from 'lib/hooks/useFetch';
+
+export const SUPPORTED_VERIFICATION_METHODS: Array<SmartContractVerificationMethod> = [
+  'flattened-code',
+  'standard-input',
+  'sourcify',
+  'multi-part',
+  'vyper-code',
+  'vyper-multi-part',
+];
+
+export function isValidVerificationMethod(method?: string): method is SmartContractVerificationMethod {
+  return method && SUPPORTED_VERIFICATION_METHODS.includes(method as SmartContractVerificationMethod) ? true : false;
+}
+
+export function sortVerificationMethods(methodA: SmartContractVerificationMethod, methodB: SmartContractVerificationMethod) {
+  const indexA = SUPPORTED_VERIFICATION_METHODS.indexOf(methodA);
+  const indexB = SUPPORTED_VERIFICATION_METHODS.indexOf(methodB);
+
+  if (indexA > indexB) {
+    return 1;
+  }
+
+  if (indexA < indexB) {
+    return -1;
+  }
+
+  return 0;
+}
+
+export function prepareRequestBody(data: FormFields): FetchParams['body'] {
+  switch (data.method) {
+    case 'flattened-code': {
+      return {
+        compiler_version: data.compiler?.value,
+        source_code: data.code,
+        is_optimization_enabled: data.is_optimization_enabled,
+        is_yul_contract: data.is_yul,
+        optimization_runs: data.optimization_runs,
+        contract_name: data.name,
+        libraries: reduceLibrariesArray(data.libraries),
+        evm_version: data.evm_version?.value,
+        autodetect_constructor_args: data.autodetect_constructor_args,
+        constructor_args: data.constructor_args,
+      };
+    }
+
+    case 'standard-input': {
+      const body = new FormData();
+      body.set('compiler_version', data.compiler?.value);
+      body.set('contract_name', data.name);
+      body.set('autodetect_constructor_args', String(Boolean(data.autodetect_constructor_args)));
+      body.set('constructor_args', data.constructor_args);
+      addFilesToFormData(body, data.sources);
+
+      return body;
+    }
+
+    case 'sourcify': {
+      const body = new FormData();
+      addFilesToFormData(body, data.sources);
+
+      return body;
+    }
+
+    case 'multi-part': {
+      const body = new FormData();
+      body.set('compiler_version', data.compiler?.value);
+      body.set('evm_version', data.evm_version?.value);
+      body.set('is_optimization_enabled', String(Boolean(data.is_optimization_enabled)));
+      data.is_optimization_enabled && body.set('optimization_runs', data.optimization_runs);
+
+      const libraries = reduceLibrariesArray(data.libraries);
+      libraries && body.set('libraries', JSON.stringify(libraries));
+      addFilesToFormData(body, data.sources);
+
+      return body;
+    }
+
+    case 'vyper-code': {
+      return {
+        compiler_version: data.compiler?.value,
+        source_code: data.code,
+        contract_name: data.name,
+        constructor_args: data.constructor_args,
+      };
+    }
+
+    case 'vyper-multi-part': {
+      const body = new FormData();
+      body.set('compiler_version', data.compiler?.value);
+      body.set('evm_version', data.evm_version?.value);
+      addFilesToFormData(body, data.sources);
+
+      return body;
+    }
+
+    default: {
+      return {};
+    }
+  }
+}
+
+function reduceLibrariesArray(libraries: Array<ContractLibrary> | undefined) {
+  if (!libraries || libraries.length === 0) {
+    return;
+  }
+
+  return libraries.reduce<Record<string, string>>((result, item) => {
+    result[item.name] = item.address;
+    return result;
+  }, {});
+}
+
+function addFilesToFormData(body: FormData, files: Array<File> | undefined) {
+  if (!files) {
+    return;
+  }
+
+  for (let index = 0; index < files.length; index++) {
+    const file = files[index];
+    body.set(`files[${ index }]`, file, file.name);
+  }
+}
+
+const API_ERROR_TO_FORM_FIELD: Record<keyof SmartContractVerificationError, FieldPath<FormFields>> = {
+  contract_source_code: 'code',
+  files: 'sources',
+  compiler_version: 'compiler',
+  constructor_arguments: 'constructor_args',
+  name: 'name',
+};
+
+export function formatSocketErrors(errors: SmartContractVerificationError): Array<[FieldPath<FormFields>, ErrorOption]> {
+  return Object.entries(errors).map(([ key, value ]) => {
+    return [ API_ERROR_TO_FORM_FIELD[key as keyof SmartContractVerificationError], { message: value.join(',') } ];
+  });
+}

ui/pages/ContractVerification.tsx

@@ -2,13 +2,19 @@ import { Text } from '@chakra-ui/react';
 import { useRouter } from 'next/router';
 import React from 'react';
 
+import type { SmartContractVerificationConfigRaw, SmartContractVerificationMethod } from 'types/api/contract';
+
+import useApiQuery from 'lib/api/useApiQuery';
 import { useAppContext } from 'lib/appContext';
 import isBrowser from 'lib/isBrowser';
 import link from 'lib/link/link';
 import ContractVerificationForm from 'ui/contractVerification/ContractVerificationForm';
+import { isValidVerificationMethod, sortVerificationMethods } from 'ui/contractVerification/utils';
 import Address from 'ui/shared/address/Address';
 import AddressIcon from 'ui/shared/address/AddressIcon';
+import ContentLoader from 'ui/shared/ContentLoader';
 import CopyToClipboard from 'ui/shared/CopyToClipboard';
+import DataFetchAlert from 'ui/shared/DataFetchAlert';
 import HashStringShortenDynamic from 'ui/shared/HashStringShortenDynamic';
 import Page from 'ui/shared/Page/Page';
 import PageTitle from 'ui/shared/Page/PageTitle';
@@ -21,7 +27,31 @@ const ContractVerification = () => {
   const router = useRouter();
 
   const hash = router.query.id?.toString();
-  const method = router.query.id?.toString();
+  const method = router.query.id?.toString() as SmartContractVerificationMethod | undefined;
+
+  const contractQuery = useApiQuery('contract', {
+    pathParams: { id: hash },
+    queryOptions: {
+      enabled: Boolean(hash),
+    },
+  });
+
+  if (contractQuery.isError && contractQuery.error.status === 404) {
+    throw Error('Not found', { cause: contractQuery.error as unknown as Error });
+  }
+
+  const configQuery = useApiQuery('contract_verification_config', {
+    queryOptions: {
+      select: (data: unknown) => {
+        const _data = data as SmartContractVerificationConfigRaw;
+        return {
+          ..._data,
+          verification_options: _data.verification_options.filter(isValidVerificationMethod).sort(sortVerificationMethods),
+        };
+      },
+      enabled: Boolean(hash),
+    },
+  });
 
   React.useEffect(() => {
     if (method && hash) {
@@ -31,6 +61,32 @@ const ContractVerification = () => {
   // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [ ]);
 
+  const isVerifiedContract = contractQuery.data?.is_verified;
+
+  React.useEffect(() => {
+    if (isVerifiedContract) {
+      router.push(link('address_index', { id: hash }, { tab: 'contract' }), undefined, { scroll: false, shallow: true });
+    }
+  }, [ hash, isVerifiedContract, router ]);
+
+  const content = (() => {
+    if (configQuery.isError || !hash || contractQuery.isError) {
+      return <DataFetchAlert/>;
+    }
+
+    if (configQuery.isLoading || contractQuery.isLoading || isVerifiedContract) {
+      return <ContentLoader/>;
+    }
+
+    return (
+      <ContractVerificationForm
+        method={ method && configQuery.data.verification_options.includes(method) ? method : undefined }
+        config={ configQuery.data }
+        hash={ hash }
+      />
+    );
+  })();
+
   return (
     <Page>
       <PageTitle
@@ -39,7 +95,7 @@ const ContractVerification = () => {
         backLinkLabel="Back to contract"
       />
       { hash && (
-        <Address>
+        <Address mb={ 12 }>
           <AddressIcon address={{ hash, is_contract: true, implementation_name: null }} flexShrink={ 0 }/>
           <Text fontFamily="heading" ml={ 2 } fontWeight={ 500 } fontSize="lg" w={{ base: '100%', lg: 'auto' }} whiteSpace="nowrap" overflow="hidden">
             <HashStringShortenDynamic hash={ hash }/>
@@ -47,7 +103,7 @@ const ContractVerification = () => {
           <CopyToClipboard text={ hash }/>
         </Address>
       ) }
-      <ContractVerificationForm/>
+      { content }
     </Page>
   );
 };

ui/shared/FancySelect/FancySelect.tsx

 import { FormControl, useToken, useColorMode } from '@chakra-ui/react';
-import type { Size, CSSObjectWithLabel, OptionsOrGroups, GroupBase, SingleValue, MultiValue } from 'chakra-react-select';
-import { Select } from 'chakra-react-select';
+import type { CSSObjectWithLabel, GroupBase, SingleValue, MultiValue, AsyncProps, Props as SelectProps } from 'chakra-react-select';
+import { Select, AsyncSelect } from 'chakra-react-select';
 import React from 'react';
 import type { FieldError, FieldErrorsImpl, Merge } from 'react-hook-form';
 
@@ -9,20 +9,23 @@ import type { Option } from './types';
 import { getChakraStyles } from 'ui/shared/FancySelect/utils';
 import InputPlaceholder from 'ui/shared/InputPlaceholder';
 
-interface Props {
-  size?: Size; // we don't have styles for sm select/input with floating label yet
-  options: OptionsOrGroups<Option, GroupBase<Option>>;
-  placeholder: string;
-  name: string;
-  onChange: (newValue: SingleValue<Option> | MultiValue<Option>) => void;
-  onBlur?: () => void;
-  isDisabled?: boolean;
-  isRequired?: boolean;
+interface CommonProps {
   error?: Merge<FieldError, FieldErrorsImpl<Option>> | undefined;
-  value?: SingleValue<Option> | MultiValue<Option>;
 }
 
-const FancySelect = ({ size = 'md', options, placeholder, name, onChange, onBlur, isDisabled, isRequired, error, value }: Props) => {
+interface RegularSelectProps extends SelectProps<Option, boolean, GroupBase<Option>>, CommonProps {
+  isAsync?: false;
+  onChange: (newValue: SingleValue<Option> | MultiValue<Option>) => void;
+}
+
+interface AsyncSelectProps extends AsyncProps<Option, boolean, GroupBase<Option>>, CommonProps {
+  isAsync: true;
+  onChange: (newValue: SingleValue<Option> | MultiValue<Option>) => void;
+}
+
+type Props = RegularSelectProps | AsyncSelectProps;
+
+const FancySelect = (props: Props) => {
   const menuZIndex = useToken('zIndices', 'dropdown');
   const { colorMode } = useColorMode();
 
@@ -32,34 +35,30 @@ const FancySelect = ({ size = 'md', options, placeholder, name, onChange, onBlur
 
   const chakraStyles = React.useMemo(() => getChakraStyles(colorMode), [ colorMode ]);
 
+  const SelectComponent = props.isAsync ? AsyncSelect : Select;
+
   return (
     <FormControl
       variant="floating"
-      size={ size }
-      isRequired={ isRequired }
-      { ...(error ? { 'aria-invalid': true } : {}) }
-      { ...(isDisabled ? { 'aria-disabled': true } : {}) }
-      { ...(value ? { 'data-active': true } : {}) }
+      size={ props.size || 'md' }
+      isRequired={ props.isRequired }
+      { ...(props.error ? { 'aria-invalid': true } : {}) }
+      { ...(props.isDisabled ? { 'aria-disabled': true } : {}) }
+      { ...(props.value ? { 'data-active': true } : {}) }
     >
-      <Select
+      <SelectComponent
+        { ...props }
+        size={ props.size || 'md' }
         menuPortalTarget={ window.document.body }
         placeholder=""
-        name={ name }
-        options={ options }
-        size={ size }
         styles={ styles }
         chakraStyles={ chakraStyles }
+        isInvalid={ Boolean(props.error) }
         useBasicStyles
-        onChange={ onChange }
-        onBlur={ onBlur }
-        isDisabled={ isDisabled }
-        isRequired={ isRequired }
-        isInvalid={ Boolean(error) }
-        value={ value }
       />
       <InputPlaceholder
-        text={ placeholder }
-        error={ error }
+        text={ typeof props.placeholder === 'string' ? props.placeholder : '' }
+        error={ props.error }
         isFancy
       />
     </FormControl>

ui/shared/InputPlaceholder.tsx

@@ -7,9 +7,10 @@ interface Props {
   error?: Partial<FieldError>;
   className?: string;
   isFancy?: boolean;
+  isInModal?: boolean;
 }
 
-const InputPlaceholder = ({ text, error, className, isFancy }: Props) => {
+const InputPlaceholder = ({ text, error, className, isFancy, isInModal }: Props) => {
   let errorMessage = error?.message;
 
   if (!errorMessage && error?.type === 'pattern') {
@@ -20,6 +21,7 @@ const InputPlaceholder = ({ text, error, className, isFancy }: Props) => {
     <FormLabel
       className={ className }
       { ...(isFancy ? { 'data-fancy': true } : {}) }
+      { ...(isInModal ? { 'data-in-modal': true } : {}) }
     >
       <chakra.span>{ text }</chakra.span>
       { errorMessage && <chakra.span order={ 3 } whiteSpace="pre"> - { errorMessage }</chakra.span> }

ui/shared/Page/Page.tsx

@@ -35,7 +35,7 @@ const Page = ({
       return <PageContent isHomePage={ isHomePage }>{ content }</PageContent>;
     }
 
-    return isInvalidTxHash ? <ErrorInvalidTxHash/> : <AppError statusCode={ 500 }/>;
+    return isInvalidTxHash ? <ErrorInvalidTxHash/> : <AppError statusCode={ statusCode }/>;
   }, [ isHomePage, wrapChildren ]);
 
   const renderedChildren = wrapChildren ? (

ui/shared/forms/DragAndDropArea.tsx

+import { Box } from '@chakra-ui/react';
+import type { DragEvent } from 'react';
+import React from 'react';
+
+import { getAllFileEntries, convertFileEntryToFile } from './utils/files';
+
+interface Props {
+  onDrop: (files: Array<File>) => void;
+}
+
+const DragAndDropArea = ({ onDrop }: Props) => {
+  const [ isDragOver, setIsDragOver ] = React.useState(false);
+
+  const handleDrop = React.useCallback(async(event: DragEvent<HTMLDivElement>) => {
+    event.preventDefault();
+
+    const fileEntries = await getAllFileEntries(event.dataTransfer.items);
+    const files = await Promise.all(fileEntries.map(convertFileEntryToFile));
+
+    onDrop(files);
+    setIsDragOver(false);
+  }, [ onDrop ]);
+
+  const handleDragOver = React.useCallback((event: DragEvent<HTMLDivElement>) => {
+    event.preventDefault();
+  }, []);
+
+  const handleDragEnter = React.useCallback((event: DragEvent<HTMLDivElement>) => {
+    event.preventDefault();
+    setIsDragOver(true);
+  }, []);
+
+  const handleDragLeave = React.useCallback((event: DragEvent<HTMLDivElement>) => {
+    event.preventDefault();
+    setIsDragOver(false);
+  }, []);
+
+  return (
+    <Box
+      w="100%"
+      h="200px"
+      bgColor="lightpink"
+      opacity={ isDragOver ? 0.8 : 1 }
+      onDrop={ handleDrop }
+      onDragOver={ handleDragOver }
+      onDragEnter={ handleDragEnter }
+      onDragLeave={ handleDragLeave }
+    />
+  );
+};
+
+export default React.memo(DragAndDropArea);

ui/shared/forms/FieldError.tsx

+import { Box, chakra } from '@chakra-ui/react';
+import React from 'react';
+
+interface Props {
+  message: string;
+  className?: string;
+}
+
+const FieldError = ({ message, className }: Props) => {
+  return <Box className={ className } color="error" fontSize="sm" mt={ 2 } wordBreak="break-all">{ message }</Box>;
+};
+
+export default chakra(FieldError);

ui/shared/forms/FileInput.tsx

@@ -3,8 +3,12 @@ import type { ChangeEvent } from 'react';
 import React from 'react';
 import type { ControllerRenderProps, FieldValues, Path } from 'react-hook-form';
 
+interface InjectedProps {
+  onChange: (files: Array<File>) => void;
+}
+
 interface Props<V extends FieldValues, N extends Path<V>> {
-  children: React.ReactNode;
+  children: React.ReactNode | ((props: InjectedProps) => React.ReactNode);
   field: ControllerRenderProps<V, N>;
   accept?: string;
   multiple?: boolean;
@@ -13,6 +17,10 @@ interface Props<V extends FieldValues, N extends Path<V>> {
 const FileInput = <Values extends FieldValues, Names extends Path<Values>>({ children, accept, multiple, field }: Props<Values, Names>) => {
   const ref = React.useRef<HTMLInputElement>(null);
 
+  const onChange = React.useCallback((files: Array<File>) => {
+    field.onChange([ ...(field.value || []), ...files ]);
+  }, [ field ]);
+
   const handleInputChange = React.useCallback((event: ChangeEvent<HTMLInputElement>) => {
     const fileList = event.target.files;
     if (!fileList) {
@@ -20,9 +28,9 @@ const FileInput = <Values extends FieldValues, Names extends Path<Values>>({ chi
     }
 
     const files = Array.from(fileList);
-    field.onChange(files);
+    onChange(files);
     field.onBlur();
-  }, [ field ]);
+  }, [ onChange, field ]);
 
   const handleClick = React.useCallback(() => {
     ref.current?.click();
@@ -32,6 +40,12 @@ const FileInput = <Values extends FieldValues, Names extends Path<Values>>({ chi
     field.onBlur();
   }, [ field ]);
 
+  const injectedProps = React.useMemo(() => ({
+    onChange,
+  }), [ onChange ]);
+
+  const content = typeof children === 'function' ? children(injectedProps) : children;
+
   return (
     <InputGroup onClick={ handleClick } onBlur={ handleInputBlur }>
       <VisuallyHiddenInput
@@ -42,7 +56,7 @@ const FileInput = <Values extends FieldValues, Names extends Path<Values>>({ chi
         multiple={ multiple }
         name={ field.name }
       />
-      { children }
+      { content }
     </InputGroup>
   );
 };

ui/shared/forms/utils/files.ts

+// Function to get all files in drop directory
+export async function getAllFileEntries(dataTransferItemList: DataTransferItemList): Promise<Array<FileSystemFileEntry>> {
+  const fileEntries: Array<FileSystemFileEntry> = [];
+
+  // Use BFS to traverse entire directory/file structure
+  const queue: Array<FileSystemFileEntry | FileSystemDirectoryEntry> = [];
+
+  // Unfortunately dataTransferItemList is not iterable i.e. no forEach
+  for (let i = 0; i < dataTransferItemList.length; i++) {
+    // Note webkitGetAsEntry a non-standard feature and may change
+    // Usage is necessary for handling directories
+    // + typescript types are kinda wrong - https://developer.mozilla.org/en-US/docs/Web/API/DataTransferItem/webkitGetAsEntry
+    const item = dataTransferItemList[i].webkitGetAsEntry() as FileSystemFileEntry | FileSystemDirectoryEntry | null;
+    item && queue.push(item);
+  }
+
+  while (queue.length > 0) {
+    const entry = queue.shift();
+    if (entry?.isFile) {
+      fileEntries.push(entry as FileSystemFileEntry);
+    } else if (entry?.isDirectory && 'createReader' in entry) {
+      queue.push(...await readAllDirectoryEntries(entry.createReader()));
+    }
+  }
+  return fileEntries;
+}
+
+// Get all the entries (files or sub-directories) in a directory
+// by calling readEntries until it returns empty array
+async function readAllDirectoryEntries(directoryReader: DirectoryReader) {
+  const entries: Array<FileSystemFileEntry> = [];
+  let readEntries = await readEntriesPromise(directoryReader);
+
+  while (readEntries && readEntries.length > 0) {
+    entries.push(...readEntries);
+    readEntries = await readEntriesPromise(directoryReader);
+  }
+  return entries;
+}
+
+// Wrap readEntries in a promise to make working with readEntries easier
+// readEntries will return only some of the entries in a directory
+// e.g. Chrome returns at most 100 entries at a time
+async function readEntriesPromise(directoryReader: DirectoryReader): Promise<Array<FileSystemFileEntry> | undefined> {
+  try {
+    return await new Promise((resolve, reject) => {
+      directoryReader.readEntries(
+        (fileEntry) => {
+          resolve(fileEntry as Array<FileSystemFileEntry>);
+        },
+        reject,
+      );
+    });
+  } catch (err) {}
+}
+
+export function convertFileEntryToFile(entry: FileSystemFileEntry): Promise<File> {
+  return new Promise((resolve) => {
+    entry.file(async(file: File) => {
+    //   const newFile = new File([ file ], entry.fullPath, { lastModified: file.lastModified, type: file.type });
+      resolve(file);
+    });
+  });
+}