diff_protobin.yml

name: Diff Protobin

on:
  pull_request_target:
    paths:
      - '**/*.bin'
      - '**/*.guildpoint'
jobs:
  custom-diff:
    runs-on: ubuntu-latest
    if: '!github.event.pull_request.draft'
    permissions: write-all
    steps:
    - name: Checkout Code
      uses: actions/checkout@v2

    - name: Install ProtoC
      run: sudo apt-get install -y protobuf-compiler

    - name: Fetch PR commits
      run: |
        git fetch origin +refs/pull/${{ github.event.pull_request.number }}/head:refs/pull/${{ github.event.pull_request.number }}/head
        git fetch origin ${{ github.base_ref }}

    - name: Get Filenames
      run: |
        for file in $(git diff --name-only origin/${{ github.base_ref }} refs/pull/${{ github.event.pull_request.number }}/head | grep -E '.bin$|.guildpoint$'); do
          mkdir -p $(dirname "$file")
          if [ -n "$(git ls-tree "origin/${{ github.base_ref }}" -- "$file")" ]; then
            git show origin/${{ github.base_ref }}:$file > $file._old
            protoc --decode=guildpoint.Guildpoint xml_converter/proto/guildpoint.proto < $file._old > $file.textproto._old
          else
            touch $file.textproto._old
          fi

          if [ -n "$(git ls-tree "refs/pull/${{ github.event.pull_request.number }}/head" -- "$file")" ]; then
            git show refs/pull/${{ github.event.pull_request.number }}/head:$file > $file._new
            protoc --decode=guildpoint.Guildpoint xml_converter/proto/guildpoint.proto < $file._new > $file.textproto._new
          else
            touch $file.textproto._new
          fi

          diff -u $file.textproto._old $file.textproto._new > $file._diff || true
          echo $file >> file_list.txt
        done

    - name: Get PR commit hash
      id: prcommithash
      run: |
          PR_COMMIT_HASH=$(git log --format="%H" -n 1 refs/pull/${{ github.event.pull_request.number }}/head)
          echo "Latest PR Commit Hash: $PR_COMMIT_HASH"
          echo "pr_commit_hash="$PR_COMMIT_HASH >> $GITHUB_OUTPUT

    - name: Post Comment
      if: always()
      uses: actions/github-script@v7
      with:
        script: |
          const fs = require('fs');
          const path = require('path');

          const issue_number = context.issue.number;
          const githubToken = process.env.GITHUB_TOKEN;

          const files = fs.readFileSync('file_list.txt', 'utf8').split("\n");

          for (let file of files) {
            if (file == "") {
              continue;
            }
            const diff_contents = fs.readFileSync(file + "._diff", 'utf8')
            let comment_body = [
              "<details>",
              "<summary>Full Diff</summary>",
              "",
              "```diff",
              diff_contents,
              "```",
              "</details>",
            ].join("\n");
            
            console.log(file)

            await github.rest.pulls.createReviewComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: issue_number,
              path: file,
              body: comment_body,
              commit_id: '${{ steps.prcommithash.outputs.pr_commit_hash }}',
              subject_type: "file",
            });
          }