name: Renovate CI
on:
  pull_request:

jobs:
  get-last-commit-message:
    if: contains(github.head_ref, 'renovate/')
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4.3.0

      - name: Get last commit message
        id: get-last-commit-message
        run: |
          echo "last_commit_message=$(git log -1 --pretty=%B)" >> $GITHUB_OUTPUT

  update-config:
    needs: get-last-commit-message
    if: "!contains(${{ needs.get-last-commit-message.outputs.last_commit_message }}, '[ready]')"
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4.3.0
        with:
          fetch-depth: 0 # Fetch all history

      - name: Get changed files
        uses: jitterbit/get-changed-files@v1
        id: files

      - name: Apply config update
        run: |
          for changed_file in ${{ steps.files.outputs.all }}; do
            echo "Changed file: $changed_file" # example: apps/jackett/docker-compose.yml
            if [[ $changed_file == *"docker-compose.yml"* ]]; then
              app_name=$(echo $changed_file | cut -d'/' -f 2)
              echo "App name: $app_name"
              ./.github/workflows/renovate-app-version.sh $app_name
            fi
          done

      - name: Commit and push changes
        uses: EndBug/add-and-commit@v9
        with:
          author_name: Big Bear CI
          author_email: ci@bigbeartechworld.com
          message: "Update app version [ready]"
          commit: --no-verify
          push: origin HEAD:${{ github.head_ref }}

  ci:
    needs:
      - update-config
      - get-last-commit-message
    if: contains(${{ needs.get-last-commit-message.outputs.last_commit_message }}, '[ready]')
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4.3.0

      - name: Install Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 20

      - uses: pnpm/action-setup@v4.2.0
        name: Install pnpm
        id: pnpm-install
        with:
          version: 10
          run_install: false

      - name: Get pnpm store directory
        id: pnpm-cache
        run: |
          echo "pnpm_cache_dir=$(pnpm store path)" >> $GITHUB_OUTPUT

      - uses: actions/cache@v4
        name: Setup pnpm cache
        with:
          path: ${{ steps.pnpm-cache.outputs.pnpm_cache_dir }}
          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
          restore-keys: |
            ${{ runner.os }}-pnpm-store-

      - name: Install dependencies
        run: pnpm install

      - name: Check bumped version
        id: check-bumped-version
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const semver = require('semver')
            const { data } = await github.rest.pulls.listFiles({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: context.issue.number
            });

            const modifiedFiles = data.map(file => file.filename);
            const filesInAppsFolder = modifiedFiles.filter(file => file.includes('Apps/'))

            // Exclude README.md from major bump or blocking automerge
            const significantChanges = modifiedFiles.filter(file => !file.includes('README.md'));

            if (filesInAppsFolder.length < significantChanges.length) {
              console.log('Not all significant files are in apps folder, skipping automerge')
              core.setOutput('major_bump', 'true')
              return
            }

            const configs = modifiedFiles.filter(file => file.includes('config.json'))
            let majorBump = 'false'

            for (const configFile of configs) {
              const baseContent = await github.rest.repos.getContent({
                owner: context.repo.owner,
                repo: context.repo.repo,
                path: configFile,
                ref: context.payload.pull_request.base.ref
              });
              const baseConfig = JSON.parse(Buffer.from(baseContent.data.content, 'base64').toString('utf-8'))

              const currentContent = await github.rest.repos.getContent({
                owner: context.repo.owner,
                repo: context.repo.repo,
                path: configFile,
                ref: context.payload.pull_request.head.ref
              });
              const currentConfig = JSON.parse(Buffer.from(currentContent.data.content, 'base64').toString('utf-8'))

              const baseVersion = semver.coerce(baseConfig.version)
              const currentVersion = semver.coerce(currentConfig.version)

              if (currentVersion?.major > baseVersion?.major) {
                console.log('Major bump detected, skipping automerge')
                majorBump = 'true'
                break
              }
            }

            core.setOutput('major_bump', majorBump)

      - name: Label this PR as "automerge" if major_bump is false
        if: steps.check-bumped-version.outputs.major_bump == 'false'
        uses: actions/github-script@v7
        with:
          github-token: ${{ secrets.PERSONAL_TOKEN }}
          script: |
            github.rest.issues.addLabels({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              labels: ["automerge"]
            })
