name: i18n-update-scheduled

# Triggered weekly to update source texts and push them to Lokalise, then pull the translations back to Github.
# Work on i18n/develop branch.

on:
  schedule:
    - cron: '0 0 * * 0'
  push:
    branches:
      - develop
  workflow_dispatch:

env:
  LOKALISE_PROJECT_ID: ${{ vars.LOKALISE_PROJECT_ID }}
  LOKALISE_API_TOKEN: ${{ secrets.LOKALISE_API_TOKEN }}
  BRANCH: i18n/develop
  LOKALISE_BRANCH: master
  NODE_VERSION: 18.x
  CI: true

jobs:
  update:
    name: Push and Pull
    runs-on: ubuntu-latest

    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:
          fetch-depth: 0
          token: ${{ steps.generate-token.outputs.token }}

      - name: Switch to i18n branch
        run: |
          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 $BRANCH) ]]; then
            git config pull.rebase false
            git fetch origin $BRANCH:$BRANCH
            git checkout $BRANCH
          else
            git checkout -b $BRANCH
          fi

      - 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: Linting and fixing
      #   run: npm run fix

      # - name: Commit changes
      #   run: |
      #     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_PUSH=$(git log -n 1 --format="%H" -- src/livecodes/i18n/locales/en)" >> $GITHUB_ENV

      # - name: Push changes
      #   run: git push origin $BRANCH

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

      - name: Import from Lokalise
        run: |
          mkdir -p $LOKALISE_TEMP && touch $LOKALISE_TEMP/locales.zip && npm run i18n-update-pull -- $LOKALISE_BRANCH && rm -rf $LOKALISE_TEMP
        env:
          LOKALISE_TEMP: lokalise_tmp

      - name: Linting and fixing
        run: npm run fix

      - name: Commit changes
        run: |
          git add .

          # Only commit if there are changes
          git diff-index --quiet HEAD || git commit -m "i18n: pull translation from Lokalise"

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

      - name: Push changes
        run: |

          git pull origin ${{ github.event.repository.default_branch }} || {
            echo "Failed to pull from ${{ github.event.repository.default_branch }}."
            echo "Please manually pull the changes, solve potential conflicts, and re-run the workflow."
            echo "::error title=Pull failed::Failed to pull from ${{ github.event.repository.default_branch }}."
            exit 1
          }

          git push origin $BRANCH

      - name: Check if has differences between ${{ env.BRANCH }} and ${{ github.event.repository.default_branch }}
        id: check-diff
        run: |
          DIFF=$(git diff --name-only $BRANCH origin/${{ github.event.repository.default_branch }})
          if [[ -z $DIFF ]]; then
            echo "No difference between $BRANCH and ${{ github.event.repository.default_branch }}."
            echo "SKIP=true" >> $GITHUB_OUTPUT
          fi

          echo "LAST_COMMIT_SHA_PUSH=$(git log -n 1 --format="%H" -- src/livecodes/i18n/locales/en)" >> $GITHUB_ENV

      - name: Create a new i18n PR if not exists
        uses: actions/github-script@v7
        if: steps.check-diff.outputs.SKIP != 'true'
        with:
          github-token: ${{ steps.generate-token.outputs.token }}
          script: |
            const prInfo = await github.rest.pulls.list({
              owner: context.repo.owner,
              repo: context.repo.repo,
              state: 'open',
              head: process.env.BRANCH
            });

            if (prInfo.data.length > 0) {
              return;
            }

            console.log(`Creating a new i18n PR from ${process.env.BRANCH}...`);

            const repoURL = context.payload.repository.html_url;
            const branchURL = `${repoURL}/tree/${process.env.BRANCH}`;
            const prTitle = `i18n: scheduled update from ${process.env.BRANCH}`;
            const prBody = `## What type of PR is this? (check all applicable)

            - [ ] ✨ Feature
            - [ ] 🐛 Bug Fix
            - [ ] 📝 Documentation Update
            - [ ] 🎨 Style
            - [ ] ♻️ Code Refactor
            - [ ] 🔥 Performance Improvements
            - [ ] ✅ Test
            - [ ] 🤖 Build
            - [ ] 🔁 CI
            - [ ] 📦 Chore (Release)
            - [ ] ⏩ Revert
            - [x] 🌐 Internationalization / Translation

            ## Description
            ### i18n Actions: \`.i18n-update-scheduled\`
            Scheduled update of source texts and translations.

            | Name | Description |
            | --- | --- |
            | **Last Commit SHA (Push)** | ${process.env.LAST_COMMIT_SHA_PUSH} |
            | **Last Commit SHA (Pull)** | ${process.env.LAST_COMMIT_SHA_PULL} |
            `;

            github.rest.pulls.create({
              owner: context.repo.owner,
              repo: context.repo.repo,
              title: prTitle,
              body: prBody,
              head: process.env.BRANCH,
              base: '${{ github.event.repository.default_branch }}'
            });