auto-format.yml

name: 'Auto Format'

on:
  workflow_dispatch:
  schedule:
    # AM 6:00(JST)
    - cron: '0 21 * * *'

concurrency:
  group: auto-format
  cancel-in-progress: true

jobs:
  format:
    runs-on: ubuntu-22.04
    timeout-minutes: 15

    steps:
      # https://github.com/marketplace/actions/checkout
      - name: Checkout
        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
        with:
          ref: main

      # https://github.com/marketplace/actions/mise-action
      - name: mise action
        uses: jdx/mise-action@d6e32c1796099e0f1f3ac741c220a8b7eae9e5dd # v2.0.6

      - name: setup gitignore target files
        uses: ./.github/actions/setup-gitignore-target-files

      - name: setup pub
        uses: ./.github/actions/setup-pub

      - name: Run Melos Format
        run: melos format

      - name: Check for file changes
        id: diff
        run: |
          if git diff --quiet -- '*.dart'; then
            echo "changes=false" >> "$GITHUB_OUTPUT"
          else
            echo "changes=true" >> "$GITHUB_OUTPUT"
          fi

      # https://github.com/marketplace/actions/create-github-app-token
      - name: Create GitHub App Token
        if: steps.diff.outputs.changes == 'true'
        uses: actions/create-github-app-token@5d869da34e18e7287c1daad50e0b8ea0f506ce69 # v1.11.0
        id: app-token
        with:
          app-id: ${{ vars.BOT_APP_ID }}
          private-key: ${{ secrets.BOT_PRIVATE_KEY }}

      # https://github.com/marketplace/actions/github-script
      - name: Commit and push changes
        if: steps.diff.outputs.changes == 'true'
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        with:
          github-token: ${{ steps.app-token.outputs.token }}
          script: |
            const { readFileSync } = require('fs');
            const { resolve } = require('path');
            const { execSync } = require('child_process');

            const changedFiles = execSync('git diff --name-only')
              .toString()
              .split('\n')
              .filter(Boolean);

            const branchRef = `auto-format-${context.sha.slice(0, 7)}`;
            const branch = await github.rest.git.createRef({
              ...context.repo,
              ref: `refs/heads/${branchRef}`,
              sha: context.sha
            });
            
            const tree = await github.rest.git.createTree({
              ...context.repo,
              base_tree: context.sha,
              tree: changedFiles.map(path => ({
                path,
                mode: '100644',
                content: readFileSync(resolve(process.cwd(), path), 'utf8')
              }))
            });

            const commit = await github.rest.git.createCommit({
              ...context.repo,
              message: "refactor: auto format",
              tree: tree.data.sha,
              parents: [context.sha]
            });

            await github.rest.git.updateRef({
              ...context.repo,
              ref: `heads/${branchRef}`,
              sha: commit.data.sha
            });
            
            const pullRequest = await github.rest.pulls.create({
              ...context.repo,
              title: "refactor: auto format",
              // Use the table as the description
              body: `This was automatically generated by the [${context.workflow}](https://github.com/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId})`,
              head: branchRef,
              base: "main"
            });