name: Report API Diff

on:
  pull_request:
    branches:
      - master
      - develop

jobs:
  get-base:
    runs-on: ubuntu-latest
    permissions:
      contents: read

    strategy:
      matrix:
        node-version: [20.5.1]

    services:
      db:
        image: postgres:13
        ports:
          - 5432:5432
        env:
          POSTGRES_DB: misskey
          POSTGRES_HOST_AUTH_METHOD: trust
          POSTGRES_USER: example-misskey-user
          POSTGRESS_PASS: example-misskey-pass
      redis:
        image: redis:7
        ports:
          - 6379:6379

    steps:
    - uses: actions/checkout@v4.1.1
      with:
        repository: ${{ github.event.pull_request.base.repo.full_name }}
        ref: ${{ github.base_ref }}
        submodules: true
    - name: Install pnpm
      uses: pnpm/action-setup@v2
      with:
        version: 8
        run_install: false
    - name: Use Node.js ${{ matrix.node-version }}
      uses: actions/setup-node@v3.8.1
      with:
        node-version: ${{ matrix.node-version }}
        cache: 'pnpm'
    - run: corepack enable
    - run: pnpm i --frozen-lockfile
    - name: Check pnpm-lock.yaml
      run: git diff --exit-code pnpm-lock.yaml
    - name: Copy Configure
      run: cp .config/example.yml .config/default.yml
    - name: Build
      run: pnpm build
    - name : Migrate
      run: pnpm migrate
    - name: Launch misskey
      run: |
        screen -S misskey -dm pnpm run dev
        sleep 30s
    - name: Wait for Misskey to be ready
      run: |
        MAX_RETRIES=12
        RETRY_DELAY=5
        count=0
        until $(curl --output /dev/null --silent --head --fail http://localhost:3000) || [[ $count -eq $MAX_RETRIES ]]; do
          printf '.'
          sleep $RETRY_DELAY
          count=$((count + 1))
        done

        if [[ $count -eq $MAX_RETRIES ]]; then
          echo "Failed to connect to Misskey after $MAX_RETRIES attempts."
          exit 1
        fi
    - id: fetch
      name: Get api.json from Misskey
      run: |
        RESULT=$(curl --retry 5 --retry-delay 5 --retry-max-time 60 http://localhost:3000/api.json)
        echo $RESULT > api-base.json
    - name: Upload Artifact
      uses: actions/upload-artifact@v3
      with:
        name: api-artifact
        path: api-base.json
    - name: Kill Misskey Job
      run: screen -S misskey -X quit

  get-head:
    runs-on: ubuntu-latest
    permissions:
      contents: read

    strategy:
      matrix:
        node-version: [20.5.1]

    services:
      db:
        image: postgres:13
        ports:
          - 5432:5432
        env:
          POSTGRES_DB: misskey
          POSTGRES_HOST_AUTH_METHOD: trust
          POSTGRES_USER: example-misskey-user
          POSTGRESS_PASS: example-misskey-pass
      redis:
        image: redis:7
        ports:
          - 6379:6379

    steps:
    - uses: actions/checkout@v4.1.1
      with:
        repository: ${{ github.event.pull_request.head.repo.full_name }}
        ref: ${{ github.head_ref }}
        submodules: true
    - name: Install pnpm
      uses: pnpm/action-setup@v2
      with:
        version: 8
        run_install: false
    - name: Use Node.js ${{ matrix.node-version }}
      uses: actions/setup-node@v3.8.1
      with:
        node-version: ${{ matrix.node-version }}
        cache: 'pnpm'
    - run: corepack enable
    - run: pnpm i --frozen-lockfile
    - name: Check pnpm-lock.yaml
      run: git diff --exit-code pnpm-lock.yaml
    - name: Copy Configure
      run: cp .config/example.yml .config/default.yml
    - name: Build
      run: pnpm build
    - name : Migrate
      run: pnpm migrate
    - name: Launch misskey
      run: |
        screen -S misskey -dm pnpm run dev
        sleep 30s
    - name: Wait for Misskey to be ready
      run: |
        MAX_RETRIES=12
        RETRY_DELAY=5
        count=0
        until $(curl --output /dev/null --silent --head --fail http://localhost:3000) || [[ $count -eq $MAX_RETRIES ]]; do
          printf '.'
          sleep $RETRY_DELAY
          count=$((count + 1))
        done

        if [[ $count -eq $MAX_RETRIES ]]; then
          echo "Failed to connect to Misskey after $MAX_RETRIES attempts."
          exit 1
        fi
    - id: fetch
      name: Get api.json from Misskey
      run: |
        RESULT=$(curl --retry 5 --retry-delay 5 --retry-max-time 60 http://localhost:3000/api.json)
        echo $RESULT > api-head.json
    - name: Upload Artifact
      uses: actions/upload-artifact@v3
      with:
        name: api-artifact
        path: api-head.json
    - name: Kill Misskey Job
      run: screen -S misskey -X quit

  compare-diff:
    runs-on: ubuntu-latest
    if: success()
    needs: [get-base, get-head]
    permissions:
      pull-requests: write

    steps:
      - name: Download Artifact
        uses: actions/download-artifact@v3
        with:
          name: api-artifact
          path: ./artifacts
      - name: Output base
        run: cat ./artifacts/api-base.json
      - name: Output head
        run: cat ./artifacts/api-head.json
      - name: Arrange json files
        run: |
          jq '.' ./artifacts/api-base.json > ./api-base.json
          jq '.' ./artifacts/api-head.json > ./api-head.json
      - name: Get diff of 2 files
        run: diff -u --label=base --label=head ./api-base.json ./api-head.json | cat > api.json.diff
      - name: Get full diff
        run: diff --label=base --label=head --new-line-format='+%L' --old-line-format='-%L' --unchanged-line-format=' %L' ./api-base.json ./api-head.json | cat > api-full.json.diff
      - name: Echo full diff
        run: cat ./api-full.json.diff
      - name: Upload full diff to Artifact
        uses: actions/upload-artifact@v3
        with:
          name: api-artifact
          path: api-full.json.diff
      - id: out-diff
        name: Build diff Comment
        run: |
          cat <<- EOF > ./output.md
          このPRによるapi.jsonの差分
          <details>
          <summary>差分はこちら</summary>

          \`\`\`diff
          $(cat ./api.json.diff)
          \`\`\`
          </details>

          [Get diff files from Workflow Page](https://github.com/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID})
          EOF
      - name: Write diff comment
        uses: thollander/actions-comment-pull-request@v2
        with:
          comment_tag: show_diff
          filePath: ./output.md
