name: Tipi CI
on:
  push:
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review, labeled]

jobs:
  ci:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Install Node.js
        uses: actions/setup-node@v3
        with:
          node-version: 16

      - uses: pnpm/action-setup@v2.0.1
        name: Install pnpm
        id: pnpm-install
        with:
          version: 7
          run_install: false

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

      - uses: actions/cache@v3
        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: Run global tests
        run: pnpm test

      - name: Run linter
        run: pnpm run lint

      - name: Check bumped version
        id: check-bumped-version
        if: github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'ready')
        uses: actions/github-script@v4
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const semver = require('semver')
            const { data } = await github.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/'))

            if (filesInAppsFolder.length < modifiedFiles.length) {
              console.log('Not all 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.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.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@v4
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            github.issues.addLabels({
              issue_number: context.issue.number,
              owner: context.repo.owner,
              repo: context.repo.repo,
              labels: ["automerge"]
            })