homebrew publish support (#994)

.goreleaser.yml

 project_name: bee
 
 builds:
-  - main: ./cmd/bee/main.go
-
+  - main: ./cmd/bee
     binary: bee
-
     flags:
       - -v
       - -trimpath
-
     ldflags:
       - -s -w -X github.com/ethersphere/bee.version={{.Version}} -X github.com/ethersphere/bee.commit={{.ShortCommit}}
-
     env:
       - CGO_ENABLED=0
-
     goos:
-      - darwin
       - linux
       - windows
-
     goarch:
       - amd64
       - 386
       - arm64
       - arm
-
+    goarm:
+      - 7
     ignore:
-      - goos: darwin
-        goarch: 386
-      - goos: darwin
-        goarch: arm64
-      - goos: darwin
-        goarch: arm
       - goos: windows
         goarch: arm64
       - goos: windows
         goarch: arm
+  - id: darwin
+    main: ./cmd/bee
+    binary: bee
+    flags:
+      - -v
+      - -trimpath
+    ldflags:
+      - -s -w -X github.com/ethersphere/bee.version={{.Version}} -X github.com/ethersphere/bee.commit={{.ShortCommit}}
+    env:
+      - CGO_ENABLED=0
+    goos:
+      - darwin
+    goarch:
+      - amd64
 
 snapshot:
   name_template: "{{.Tag}}-snapshot"
 
 archives:
-  - name_template: "{{ tolower .ProjectName }}-{{ tolower .Os }}-{{ tolower .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}"
-
+  -
+    name_template: "{{ tolower .ProjectName }}-{{ tolower .Os }}-{{ tolower .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}"
     format: binary
+  -
+    id: homebrew
+    builds:
+    - darwin
+    name_template: "{{ tolower .ProjectName }}-{{ tolower .Os }}-{{ tolower .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}"
+    files:
+    - packaging/homebrew/bee.yaml
+    - packaging/homebrew/bee-get-addr
+    - LICENSE
+    - README.md
 
 nfpms:
   - file_name_template: "{{ tolower .ProjectName }}_{{ tolower .Version }}_{{ tolower .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}"
@@ -95,3 +107,62 @@ nfpms:
           postremove: ./packaging/rpm/postun
 
     bindir: /usr/bin
+
+brews:
+  - name: swarm-bee
+    tap:
+      owner: ethersphere
+      name: homebrew-tap
+      token: "{{ .Env.HOMEBREW_TAP_PAT }}"
+    ids:
+      - homebrew
+    commit_author:
+      name: bee-worker
+      email: bee-worker@ethswarm.org
+    homepage: https://swarm.ethereum.org/
+    description: Ethereum Swarm node
+    caveats: |
+        Logs:   #{var}/log/bee/bee.log
+        Config: #{etc}/bee/bee.yaml
+
+        Bee has SWAP enabled by default and it needs ethereum endpoint to operate.
+        It is recommended to use external signer with bee.
+        Check documentation for more info https://docs.ethswarm.org/
+
+        After you finish configuration run 'bee-get-addr'.
+    test: |
+      system "#{bin}/bee version"
+    install: |
+      (etc/"bee").mkpath
+      (var/"lib/bee").mkpath
+      bin.install ["bee", "packaging/homebrew/bee-get-addr"]
+      etc.install "packaging/homebrew/bee.yaml" => "bee/bee.yaml" unless File.exists? etc/"bee/bee.yaml"
+    post_install: |
+      system("openssl", "rand", "-base64", "32", "-out", var/"lib/bee/password")
+      system(bin/"bee", "init", "--config", etc/"bee/bee.yaml", ">/dev/null", "2>&1")
+    plist: |
+      <?xml version="1.0" encoding="UTF-8"?>
+      <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+      <plist version="1.0">
+      <dict>
+        <key>KeepAlive</key>
+        <true/>
+        <key>Label</key>
+        <string>#{plist_name}</string>
+        <key>ProgramArguments</key>
+        <array>
+          <string>#{bin}/bee</string>
+          <string>start</string>
+          <string>--config</string>
+          <string>#{etc}/bee/bee.yaml</string>
+        </array>
+        <key>RunAtLoad</key>
+        <true/>
+        <key>WorkingDirectory</key>
+        <string>/usr/local</string>
+        <key>StandardOutPath</key>
+        <string>#{var}/log/bee/bee.log</string>
+        <key>StandardErrorPath</key>
+        <string>#{var}/log/bee/bee.log</string>
+      </dict>
+      </plist>

packaging/homebrew/bee-get-addr

+#!/bin/sh
+
+RESP=$(/usr/local/bin/bee init --config /usr/local/etc/bee/bee.yaml 2>&1)
+case "$RESP" in
+    Error*)
+        echo "
+Enabled clef-signer but clef is not running.
+Check https://docs.ethswarm.org/ for more info.
+After you fix configuration run 'bee-get-addr' again.
+        "
+        ;;
+    *)
+        ETH_ADDRESS=$(echo "$RESP" | grep ethereum | cut -d' ' -f6 | tr -d '"')
+        echo "
+Please make sure there is sufficient eth and bzz available on $ETH_ADDRESS address.
+You can get both goerli eth and goerli bzz from https://faucet.ethswarm.org
+After you get the funds start service with 'brew services start swarm-bee'.
+        "
+        ;;
+esac

packaging/homebrew/bee.yaml

+## Bee configuration - https://swarm-gateways.net/bzz:/docs.swarm.eth/docs/installation/configuration
+
+## HTTP API listen address (default ":1633")
+# api-addr: :1633
+## initial nodes to connect to (default [/dnsaddr/bootnode.ethswarm.org])
+# bootnode: [/dnsaddr/bootnode.ethswarm.org]
+## enable clef signer
+# clef-signer-enable: false
+## clef signer endpoint
+clef-signer-endpoint: /usr/local/var/lib/bee-clef/clef.ipc
+## config file (default is /home/<user>/.bee.yaml)
+config: /usr/local/etc/bee/bee.yaml
+## origins with CORS headers enabled
+# cors-allowed-origins: []
+## data directory (default "/home/<user>/.bee")
+data-dir: /usr/local/var/lib/bee
+## db capacity in chunks, multiply by 4096 to get approximate capacity in bytes
+# db-capacity: 5000000
+## debug HTTP API listen address (default ":1635")
+# debug-api-addr: 127.0.0.1:1635
+## enable debug HTTP API
+# debug-api-enable: false
+## disable a set of sensitive features in the api
+# gateway-mode: false
+## enable global pinning
+# global-pinning-enable: false
+## NAT exposed address
+# nat-addr: ""
+## ID of the Swarm network (default 1)
+# network-id: 1
+## P2P listen address (default ":1634")
+# p2p-addr: :1634
+## enable P2P QUIC protocol
+# p2p-quic-enable: false
+## enable P2P WebSocket transport
+# p2p-ws-enable: false
+## password for decrypting keys
+# password: ""
+## path to a file that contains password for decrypting keys
+password-file: /usr/local/var/lib/bee/password
+## amount in BZZ below the peers payment threshold when we initiate settlement (default 10000)
+# payment-early: 10000
+## threshold in BZZ where you expect to get paid from your peers (default 100000)
+# payment-threshold: 100000
+## excess debt above payment threshold in BZZ where you disconnect from your peer (default 10000)
+# payment-tolerance: 10000
+## ENS compatible API endpoint for a TLD and with contract address, can be repeated, format [tld:][contract-addr@]url
+# resolver-options: []
+## whether we want the node to start with no listen addresses for p2p
+# standalone: false
+## enable swap (default true)
+# swap-enable: true
+## swap ethereum blockchain endpoint (default "http://localhost:8545")
+# swap-endpoint: http://localhost:8545
+## swap factory address
+# swap-factory-address: ""
+## initial deposit if deploying a new chequebook (default 100000000)
+# swap-initial-deposit: 100000000
+## enable tracing
+# tracing-enable: false
+## endpoint to send tracing data (default "127.0.0.1:6831")
+# tracing-endpoint: 127.0.0.1:6831
+## service name identifier for tracing (default "bee")
+# tracing-service-name: bee
+## log verbosity level 0=silent, 1=error, 2=warn, 3=info, 4=debug, 5=trace (default "info")
+# verbosity: info
+## send a welcome message string during handshakes
+# welcome-message: ""