action.yml

name: Check conflict branch in PR
description: Ensure PRs with conflict branch getting help started to syncing branch latest.
branding:
  icon: check
  color: green
inputs:
  token:
    description: GitHub token to comment on the PR
    default: ${{ github.token }}
    required: true
  label:
    description: GitHub label conflict to labeling on the PR
    default: conflict
    required: true
  limit:
    description: Limitable Pull Request List
    default: 100
  comment:
    description: The comment to place in the PR
    default: |
      :wave: Hi, @authorTarget!

      We detected conflicts in your PR against the base branch :speak_no_evil:
      You may want to sync :arrows_counterclockwise: your branch with upstream!

      Ref: https://github.com/codeigniter4/CodeIgniter4/blob/develop/contributing/workflow.md#pushing-your-branch

runs:
  using: composite
  steps:
    - shell: bash
      env:
        GITHUB_TOKEN: ${{ inputs.token }}
        LABEL_GIT: ${{ inputs.label }}
        LIMIT_GIT: ${{ inputs.limit }}
        COMMENT_TEXT: ${{ inputs.comment }}
      run: |
        PR_LIST=$(gh pr list -L $LIMIT_GIT --json mergeable,url,labels,number,author)

        # Escape double quotes and newlines
        COMMENT_TEXT="$(echo "$COMMENT_TEXT" | sed 's/"/\\"/g' | awk '{printf "%s\\n", $0}')"

        IFS=$'\n' # Set Internal Field Separator to newline to handle array elements

        # Iterate through the PRs in PR_LIST
        for pr in $(echo "$PR_LIST" | jq -c '.[]'); do
          mergeable=$(echo "$pr" | jq -r '.mergeable')
          authorVar=$(echo "$pr" | jq -r '.author.login')
          labels=$(echo "$pr" | jq -c '.labels[].name' | tr -d '[]"')
          PR_NUMBER=$(echo "$pr" | jq -r '.number')
          url=$(echo "$pr" | jq -r '.url')

          echo "$pr"
          echo "[+] Repository on $GITHUB_REPOSITORY"
          echo "[+] PR Number on $PR_NUMBER"
          echo "[+] Status mergeable : $mergeable"
          echo "[+] Status label : $labels"
          echo "[+] Labeling Target on $LABEL_GIT"
          echo "[+] Author Target on $authorVar"
          echo ""

          # MERGEABLE with label
          if [ "$mergeable" == "MERGEABLE" ] && [[ "$labels" == *"$LABEL_GIT"* ]]; then
            # Remove label
            responseRemoveWithLabel=$(curl -X DELETE -H "Accept: application/vnd.github+json" \
              -H "Authorization: Bearer $GITHUB_TOKEN" \
              -H "X-GitHub-Api-Version: 2022-11-28" \
              "https://api.github.com/repos/$GITHUB_REPOSITORY/issues/$PR_NUMBER/labels/$LABEL_GIT")

            echo "$responseRemoveWithLabel"
          fi

          # CONFLICTING with no label
          if [ "$mergeable" == "CONFLICTING" ] && [[ ! "$labels" == *"$LABEL_GIT"* ]]; then
            # Replace author
            COMMENT_TEXT="$(echo $COMMENT_TEXT | sed -e "s/authorTarget/${authorVar}/g")"

            echo -e "$COMMENT_TEXT"

            # Add label
            responseAddNoLabel=$(curl -X POST -H "Authorization: Bearer $GITHUB_TOKEN" \
              -H "Accept: application/vnd.github+json" \
              -H "X-GitHub-Api-Version: 2022-11-28" \
              -d "{\"labels\":[\"$LABEL_GIT\"]}" \
              "https://api.github.com/repos/$GITHUB_REPOSITORY/issues/$PR_NUMBER/labels")

            echo "$responseAddNoLabel"

            # Add a comment
            responseCommentAddNoLabel=$(curl -X POST -H "Authorization: Bearer $GITHUB_TOKEN" \
              -H "Accept: application/vnd.github+json" \
              -H "X-GitHub-Api-Version: 2022-11-28" \
              -d "{\"body\":\"$COMMENT_TEXT\"}" \
              "https://api.github.com/repos/$GITHUB_REPOSITORY/issues/$PR_NUMBER/comments")

            echo "$responseCommentAddNoLabel"
          fi
        done

        echo "Keep running 🎉"