name: i18n-update-push

on:
  issue_comment:
    types: [created]

env:
  LOKALISE_PROJECT_ID: ${{ vars.LOKALISE_PROJECT_ID }}
  LOKALISE_API_TOKEN: ${{ secrets.LOKALISE_API_TOKEN }}
  NODE_VERSION: 18.x
  CI: true

jobs:
  precheck:
    name: Pre-check
    runs-on: ubuntu-latest
    if: github.event.issue.pull_request && github.event.issue.pull_request.merged_at && github.event.issue.state == 'closed' && github.event.comment.body == '.i18n-update-push' && (github.event.comment.author_association == 'COLLABORATOR' || github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER')
    outputs:
      skip: ${{ steps.fetch-pr.outputs.skip }}
      skipReason: ${{ steps.fetch-pr.outputs.skipReason }}
      newBranch: ${{ steps.fetch-pr.outputs.newBranch }}
      branch: ${{ steps.fetch-pr.outputs.branch }}

    steps:
      - name: Generate Github Token for CI Bot
        uses: actions/create-github-app-token@v1
        id: generate-token
        with:
          app-id: ${{ secrets.CI_APP_ID }}
          private-key: ${{ secrets.CI_APP_PRIVATE_KEY }}

      - name: Check out repository
        uses: actions/checkout@v4
        with:
          token: ${{ steps.generate-token.outputs.token }}

      - name: Fetch PR details
        id: fetch-pr
        run: |
          PR_DETAILS=$(curl -s -H "Authorization: token $GITHUB_TOKEN" "${{ github.event.issue.pull_request.url }}")
          PR_BRANCH=$(echo "$PR_DETAILS" | jq -r '.head.ref')

          if [[ $PR_BRANCH == "i18n/"* ]]; then
            SKIP_REASON="Branch \`$PR_BRANCH\` is a i18n branch."
            echo "$SKIP_REASON Exiting..."
            echo "skip=true" >> $GITHUB_OUTPUT
            echo "skipReason=$SKIP_REASON" >> $GITHUB_OUTPUT
          fi

          # Use branch name prefixed with owner name
          PR_BRANCH=$(echo "$PR_DETAILS" | jq -r '.head.label' | sed 's/:/\//g')
          NEW_BRANCH="i18n/$PR_BRANCH"
          echo "newBranch=$NEW_BRANCH" >> $GITHUB_OUTPUT
          echo "branch=$PR_BRANCH" >> $GITHUB_OUTPUT

          git config --global user.name "livecodes-ci[bot]"
          git config --global user.email "186997172+livecodes-ci[bot]@users.noreply.github.com"

          if [[ $(git ls-remote --heads origin $NEW_BRANCH) ]]; then
            SKIP_REASON="Branch \`$NEW_BRANCH\` already exists."
            echo "$SKIP_REASON Exiting..."
            echo "skip=true" >> $GITHUB_OUTPUT
            echo "skipReason=$SKIP_REASON" >> $GITHUB_OUTPUT
          fi
        env:
          GITHUB_TOKEN: ${{ steps.generate-token.outputs.token }}

  runner:
    name: Runner
    runs-on: ubuntu-latest
    needs: precheck
    if: needs.precheck.outputs.skip != 'true'
    env:
      NEW_BRANCH: ${{ needs.precheck.outputs.newBranch }}
      PR_BRANCH: ${{ needs.precheck.outputs.branch }}

    steps:
      - name: Generate Github Token for CI Bot
        uses: actions/create-github-app-token@v1
        id: generate-token
        with:
          app-id: ${{ secrets.CI_APP_ID }}
          private-key: ${{ secrets.CI_APP_PRIVATE_KEY }}

      - name: Check out repository
        uses: actions/checkout@v4
        with:
          token: ${{ steps.generate-token.outputs.token }}

      - name: Setup Node
        uses: actions/setup-node@v4
        with:
          node-version: ${{ env.NODE_VERSION }}
          cache: 'npm'
          cache-dependency-path: '**/package-lock.json'

      - name: Install dependencies
        run: npm ci

      - name: Create new branch
        run: git checkout -b $NEW_BRANCH

      - name: Linting and fixing
        run: npm run fix

      - name: Commit changes
        run: |
          git config --global user.name "livecodes-ci[bot]"
          git config --global user.email "186997172+livecodes-ci[bot]@users.noreply.github.com"
          git add .

          # Only commit if there are changes
          git diff-index --quiet HEAD || git commit -m "i18n: update source texts"

          # Save SHA of the latest commit to English locale
          echo "LAST_COMMIT_SHA=$(git log -n 1 --format="%H" -- src/livecodes/i18n/locales/en)" >> $GITHUB_ENV

      - name: Push changes
        run: git push origin $NEW_BRANCH

      - name: Push source texts to Lokalise
        run: npm run i18n-update-push -- $PR_BRANCH

      - name: Create comment and reaction on PR
        uses: actions/github-script@v7
        with:
          github-token: ${{ steps.generate-token.outputs.token }}
          script: |
            const repoURL = context.payload.repository.html_url;
            const branchURL = `${repoURL}/tree/${process.env.NEW_BRANCH}`;
            const commentBody = `## i18n Actions: \`.i18n-update-push\`
            Localization updated and pushed to [Lokalise](https://app.lokalise.com/project/${process.env.LOKALISE_PROJECT_ID}/?branch=${process.env.PR_BRANCH}).

            | Name | Description |
            | --- | --- |
            | **New Branch for i18n** | [\`${process.env.NEW_BRANCH}\`](${branchURL}) |
            | **Last Commit SHA** | ${process.env.LAST_COMMIT_SHA} |

            Maintainers can comment \`.i18n-update-pull\` after translation is done to trigger the i18n pull workflow and pull the changes back to Github. 
            `;

            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: commentBody
            })

            github.rest.reactions.createForIssueComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              comment_id: ${{ github.event.comment.id }},
              content: 'rocket'
            });

  exception:
    name: Exception
    runs-on: ubuntu-latest
    needs: precheck
    if: needs.precheck.outputs.skip == 'true'
    env:
      SKIP_REASON: ${{ needs.precheck.outputs.skipReason }}

    steps:
      - name: Generate Github Token for CI Bot
        uses: actions/create-github-app-token@v1
        id: generate-token
        with:
          app-id: ${{ secrets.CI_APP_ID }}
          private-key: ${{ secrets.CI_APP_PRIVATE_KEY }}

      - name: Create comment and reaction on PR
        uses: actions/github-script@v7
        with:
          github-token: ${{ steps.generate-token.outputs.token }}
          script: |
            const runURL = `${context.payload.repository.html_url}/actions/runs/${process.env.GITHUB_RUN_ID}`;
            const commentBody = `## i18n Actions: \`.i18n-update-push\`
            Failed to perform action due to following reason: **${process.env.SKIP_REASON}**

            Please check [action logs](${runURL}) for more details.
            `;
            github.rest.issues.createComment({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              body: commentBody
            })

            github.rest.reactions.createForIssueComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              comment_id: ${{ github.event.comment.id }},
              content: 'confused'
            });