op-challenger: Add script to resolve a game.

op-challenger/README.md

@@ -78,6 +78,21 @@ Performs a move to either attack or defend the latest claim in the specified gam
   These arguments must specify a way for `cast` to sign the transactions.
   See `cast send --help` for supported options.
 
+### [resolve.sh](scripts/resolve.sh)
+
+```shell
+./scripts/resolve.sh <RPC_URL> <GAME_ADDRESS> <SIGNER_ARGS>...
+```
+
+Resolves a dispute game. Note that this will fail if the dispute game has already been resolved
+or if the clocks have not yet expired and further moves are possible.
+If the game is resolved successfully, the result is printed.
+
+* `RPC_URL` - the RPC endpoint of the L1 endpoint to use (e.g. `http://localhost:8545`).
+* `GAME_ADDRESS` - the address of the dispute game to resolve.
+* `SIGNER_ARGS` the remaining args are past as arguments to `cast` when sending transactions.
+  These arguments must specify a way for `cast` to sign the transactions.
+  See `cast send --help` for supported options.
 
 ### [list_claims.sh](scripts/list_claims.sh)
 

op-challenger/scripts/resolve.sh

+#!/bin/bash
+set -euo pipefail
+
+RPC=${1:?Must specify RPC URL}
+GAME_ADDR=${2:?Must specify game address}
+SIGNER_ARGS="${@:3}"
+
+# Perform the move.
+RESULT_DATA=$(cast send --rpc-url "${RPC}" ${SIGNER_ARGS} "${GAME_ADDR}" "resolve()" --json)
+RESULT=$(echo "${RESULT_DATA}" | jq -r '.logs[0].topics[1]' | cast to-dec)
+
+if [[ "${RESULT}" == "0" ]]
+then
+  RESULT="In Progress"
+elif [[ "${RESULT}" == "1" ]]
+then
+  RESULT="Challenger Wins"
+elif [[ "${RESULT}" == "2" ]]
+then
+  RESULT="Defender Wins"
+fi
+
+echo "Result: $RESULT"