name: Branch Created

on:
  create:

permissions: {}

jobs:
  release-branch-created:
    name: Release Branch Created
    if: ${{ github.event.ref_type == 'branch' && endsWith(github.event.ref, '-x-y') }}
    permissions:
      contents: read
      pull-requests: write
      repository-projects: write  # Required for labels
    runs-on: ubuntu-latest
    steps:
      - name: Determine Major Version
        id: check-major-version
        run: |
          if [[ ${{ github.event.ref }} =~ ^([0-9]+)-x-y$ ]]; then
            echo "MAJOR=${BASH_REMATCH[1]}" >> "$GITHUB_OUTPUT"
          else
            echo "Not a release branch: ${{ github.event.ref }}"
          fi
      - name: New Release Branch Tasks
        if: ${{ steps.check-major-version.outputs.MAJOR }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GH_REPO: electron/electron
          MAJOR: ${{ steps.check-major-version.outputs.MAJOR }}
          NUM_SUPPORTED_VERSIONS: 3
        run: |
          PREVIOUS_MAJOR=$((MAJOR - 1))
          UNSUPPORTED_MAJOR=$((MAJOR - NUM_SUPPORTED_VERSIONS - 1))

          # Create new labels
          gh label create $MAJOR-x-y --color 8d9ee8 || true
          gh label create target/$MAJOR-x-y --color ad244f --description "PR should also be added to the \"${MAJOR}-x-y\" branch." || true
          gh label create merged/$MAJOR-x-y --color 61a3c6 --description "PR was merged to the \"${MAJOR}-x-y\" branch." || true
          gh label create in-flight/$MAJOR-x-y --color db69a6 || true
          gh label create needs-manual-bp/$MAJOR-x-y --color 8b5dba || true

          # Change color of old labels
          gh label edit $UNSUPPORTED_MAJOR-x-y --color ededed || true
          gh label edit target/$UNSUPPORTED_MAJOR-x-y --color ededed || true
          gh label edit merged/$UNSUPPORTED_MAJOR-x-y --color ededed || true
          gh label edit in-flight/$UNSUPPORTED_MAJOR-x-y --color ededed || true
          gh label edit needs-manual-bp/$UNSUPPORTED_MAJOR-x-y --color ededed || true

          # Add the new target label to any PRs which:
          #   * target the previous major
          #   * are in-flight for the previous major
          #   * need manual backport for the previous major
          for PREVIOUS_MAJOR_LABEL in target/$PREVIOUS_MAJOR-x-y in-flight/$PREVIOUS_MAJOR-x-y needs-manual-bp/$PREVIOUS_MAJOR-x-y; do
            PULL_REQUESTS=$(gh pr list --label $PREVIOUS_MAJOR_LABEL --jq .[].number --json number --limit 500)
            if [[ $PULL_REQUESTS ]]; then
              echo $PULL_REQUESTS | xargs -n 1 gh pr edit --add-label target/$MAJOR-x-y || true
            fi
          done
      - name: Generate GitHub App token
        if: ${{ steps.check-major-version.outputs.MAJOR }}
        id: generate-token
        env:
          RELEASE_BOARD_GH_APP_CREDS: ${{ secrets.RELEASE_BOARD_GH_APP_CREDS }}
        run: |
          TOKEN=$(npx @electron/github-app-auth --creds=$RELEASE_BOARD_GH_APP_CREDS --org=electron)
          echo "TOKEN=$TOKEN" >> "$GITHUB_OUTPUT"
      - name: Create Release Project Board
        if: ${{ steps.check-major-version.outputs.MAJOR }}
        env:
          GITHUB_TOKEN: ${{ steps.generate-token.outputs.TOKEN }}
          MAJOR: ${{ steps.check-major-version.outputs.MAJOR }}
          ELECTRON_ORG_ID: "O_kgDOAMybxg"
          ELECTRON_REPO_ID: "R_kgDOAI8xSw"
          TEMPLATE_PROJECT_ID: "PVT_kwDOAMybxs4AQvib"
        run: |
          # Copy template to create new project board
          PROJECT_ID=$(gh api graphql -f query='mutation ($ownerId: ID!, $projectId: ID!, $title: String!) {  
            copyProjectV2(input: {
              includeDraftIssues: true,
              ownerId: $ownerId,
              projectId: $projectId,
              title: $title
            }) {
              projectV2 {
                id
              }
            }
          }' -f ownerId=$ELECTRON_ORG_ID -f projectId=$TEMPLATE_PROJECT_ID -f title="${MAJOR}-x-y" | jq -r '.data.copyProjectV2.projectV2.id')

          # Make the new project public
          gh api graphql -f query='mutation ($projectId: ID!) {                                                                                             
            updateProjectV2(input: {
              projectId: $projectId,
              public: true,
            }) {
              projectV2 {
                id
              }
            }
          }' -f projectId=$PROJECT_ID

          # Link the new project to the Electron repository
          gh api graphql -f query='mutation ($projectId: ID!, $repositoryId: ID!) {                                                                                             
            linkProjectV2ToRepository(input: {
              projectId: $projectId,
              repositoryId: $repositoryId
            }) {
              clientMutationId
            }
          }' -f projectId=$PROJECT_ID -f repositoryId=$ELECTRON_REPO_ID

          # Get all draft issues on the new project board
          gh api graphql -f query='query ($id: ID!) {
            node(id: $id) {
              ... on ProjectV2 {
                items(first: 100) {
                  nodes {
                    ... on ProjectV2Item {
                      id
                      content {
                        ... on DraftIssue { id title
                          body
                        }
                      }
                    }
                  }
                }
              }
            }
          }' -f id=$PROJECT_ID > issues.json
          PROJECT_ITEMS=$(jq '.data.node.items.nodes[] | select(.content.id != null) | .id' issues.json)

          #
          # Do template replacement for draft issues
          #
          echo "{\"major\": $MAJOR, \"next-major\": $((MAJOR + 1))}" > variables.json

          # npx mustache is annoyingly slow, so install mustache directly
          yarn add -D mustache

          for PROJECT_ITEM_ID in $PROJECT_ITEMS; do
            # These are done with the raw output flag and sent to file to better retain formatting
            jq -r ".data.node.items.nodes[] | select(.id == $PROJECT_ITEM_ID) | .content.title" issues.json > title.txt
            jq -r ".data.node.items.nodes[] | select(.id == $PROJECT_ITEM_ID) | .content.body" issues.json > body.txt

            ./node_modules/.bin/mustache variables.json title.txt new_title.txt
            ./node_modules/.bin/mustache variables.json body.txt new_body.txt

            # Only update draft issues which had content change when interpolated
            if ! cmp --silent -- new_title.txt title.txt || ! cmp --silent -- new_body.txt body.txt; then
              DRAFT_ISSUE_ID=$(jq ".data.node.items.nodes[] | select(.id == $PROJECT_ITEM_ID) | .content.id" issues.json)
              gh api graphql -f query='mutation ($draftIssueId: ID!, $title: String!, $body: String!) {                                                                                             
                updateProjectV2DraftIssue(input: {
                  draftIssueId: $draftIssueId,
                  title: $title,
                  body: $body
                }) {
                  draftIssue {
                    id
                  }
                }
              }' -f draftIssueId=$DRAFT_ISSUE_ID -f title="$(cat new_title.txt)" -f body="$(cat new_body.txt)"
            fi
          done