name: Crowdin Download Action

on:
  workflow_dispatch:
  schedule:
    - cron: "0 * * * *"

jobs:
  download-sources-from-crowdin:
    runs-on: ubuntu-latest

    permissions:
      contents: write # needed to commit changes into the PR
      pull-requests: write # needed to update PR description, labels, etc

    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.head_ref }}

      - name: Download sources
        id: crowdin-download
        uses: crowdin/github-action@v1
        with:
          upload_sources: false
          upload_translations: false
          download_sources: false
          download_translations: true
          export_only_approved: true
          localization_branch_name: i18n_crowdin_translations
          create_pull_request: true
          pull_request_title: 'I18n: Download translations from Crowdin'
          pull_request_body:  |
            :robot: Automatic download of translations from Crowdin.

            Steps for merging:
              1. A quick sanity check of the changes and approve. Things to look out for:
                - No changes in the English file. The source of truth is in the main branch, NOT in Crowdin.
                - Translations maybe be removed if the English phrase was removed, but there should not be many of these
                - Anything else that looks 'funky'. Ask if you're not sure.
              2. Approve & (Auto-)merge. :tada:

            If there's a conflict, close the pull request and **delete the branch**. A GH action will recreate the pull request.
            Remember, the longer this pull request is open, the more likely it is that it'll get conflicts.
          pull_request_labels: 'area/frontend, area/internationalization, no-changelog, no-backport'
          pull_request_reviewers: 'grafana-frontend-platform'
          pull_request_base_branch_name: 'main'
          base_url: 'https://grafana.api.crowdin.com'
          config: 'crowdin.yml'
          source: 'public/locales/en-US/grafana.json'
          translation: 'public/locales/%locale%/%original_file_name%'
          # Magic details of the github-actions bot user, to pass CLA checks
          github_user_name: "github-actions[bot]"
          github_user_email: "41898282+github-actions[bot]@users.noreply.github.com"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          CROWDIN_PROJECT_ID: ${{ secrets.CROWDIN_PROJECT_ID }}
          CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}

      - name: Generate token
        if: steps.crowdin-download.outputs.pull_request_url
        id: generate_token
        uses: tibdex/github-app-token@b62528385c34dbc9f38e5f4225ac829252d1ea92
        with:
          app_id: ${{ secrets.GRAFANA_PR_AUTOMATION_APP_ID }}
          private_key: ${{ secrets.GRAFANA_PR_AUTOMATION_APP_PEM }}

      - name: Get pull request ID
        if: steps.crowdin-download.outputs.pull_request_url
        shell: bash
        # Crowdin action returns us the URL of the pull request, but we need an ID for the GraphQL API
        # that looks like 'PR_kwDOAOaWjc5mP_GU'
        run: |
          pr_id=$(gh pr view ${{ steps.crowdin-download.outputs.pull_request_url }} --json id -q .id)
          echo "PULL_REQUEST_ID=$pr_id" >> "$GITHUB_ENV"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Get project board ID
        uses: octokit/graphql-action@v2.x
        id: get-project-id
        if: steps.crowdin-download.outputs.pull_request_url
        with:
          # Frontend Platform project - https://github.com/orgs/grafana/projects/78
          org: grafana
          project_number: 78
          query: |
            query getProjectId($org: String!, $project_number: Int!){
              organization(login: $org) {
                projectV2(number: $project_number) {
                  title
                  id
                }
              }
            }
        env:
          GITHUB_TOKEN: ${{ steps.generate_token.outputs.token }}

      - name: Add to project board
        uses: octokit/graphql-action@v2.x
        if: steps.crowdin-download.outputs.pull_request_url
        with:
          projectid: ${{ fromJson(steps.get-project-id.outputs.data).organization.projectV2.id }}
          prid: ${{ env.PULL_REQUEST_ID }}
          query: |
            mutation addPullRequestToProject($projectid: ID!, $prid: ID!){
              addProjectV2ItemById(input: {projectId: $projectid, contentId: $prid}) {
                item {
                  id
                }
              }
            }

        env:
          GITHUB_TOKEN: ${{ steps.generate_token.outputs.token }}

      - name: Run auto-milestone
        uses: grafana/grafana-github-actions-go/auto-milestone@main
        if: steps.crowdin-download.outputs.pull_request_url
        with:
          pr: ${{ steps.crowdin-download.outputs.pull_request_number }}
          token: ${{ secrets.GITHUB_TOKEN }}