---
name: WP Versions Data Fetcher

on:
  schedule:
    - cron: '0 5 * * *'
  workflow_dispatch:
    inputs:
      max_retries:
        description: 'Max retries to fetch data from WPOrg API'
        default: 3
        required: false
        type: number

concurrency:
  group: ${{ github.repository }}-${{ github.workflow }}
  cancel-in-progress: true

permissions: {}

env:
  ARTIFACTS_BRANCH: 'artifacts'
  FEATURE_BRANCH: 'sync-wp-versions'
  FILE_PATH: 'wp-versions.json'
  MAX_RETRIES: ${{ inputs.max_retries || 3 }}
  WP_ORG_API_URL: 'https://api.wordpress.org/core/stable-check/1.0/'

jobs:
  fetch-versions:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    permissions:
      contents: write
      pull-requests: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
        with:
          ref: ${{ env.ARTIFACTS_BRANCH }}

      - name: Check if feature branch exists
        id: remote-branch
        run: |
          echo "exists=$([[ -z $(git ls-remote --heads origin ${{ env.FEATURE_BRANCH }}) ]] && echo "0" || echo "1")" >> $GITHUB_OUTPUT

      - name: Create feature branch
        if: steps.remote-branch.outputs.exists == '0'
        run: |
          git checkout -b ${{ env.FEATURE_BRANCH }}

      - name: Checkout feature branch
        if: steps.remote-branch.outputs.exists == '1'
        run: |
          git fetch --all --prune
          git checkout ${{ env.FEATURE_BRANCH }}
          git pull --no-rebase

      - name: Fetch WP Versions
        run: |
          BACKOFF=10
          for i in $(seq 1 $MAX_RETRIES); do
            echo "Fetching WP versions, attempt $i"
            RES_CODE=$(curl -sL -w "%{http_code}" $WP_ORG_API_URL -o /tmp/wp-versions.json)
            if [ $RES_CODE -eq 200 ]; then
              mv /tmp/wp-versions.json $FILE_PATH
              echo "::notice::WP versions data has been fetched successfully."
              break
            fi
            echo "Failed to fetch WP versions, attempt $i"
            if [ $i -eq $MAX_RETRIES ]; then
              echo "::error::Failed to fetch WP versions from $WP_ORG_API_URL after $MAX_RETRIES attempts"
              exit 1
            fi
            echo "Retrying in $BACKOFF seconds"
            sleep $BACKOFF
            BACKOFF=$((BACKOFF * 2))
          done

      - name: Track modified files
        id: version-file
        run: |
          IS_MODIFIED=$(git ls-files --modified wp-versions.json)
          if [ -n "$IS_MODIFIED" ]; then
            DIFF=$(git diff ${{ env.ARTIFACTS_BRANCH }} -- $FILE_PATH)
            echo "# Modified WP Versions Data" >> $GITHUB_STEP_SUMMARY
            echo "<details><summary>WP Versions Data Diff</summary>" >> $GITHUB_STEP_SUMMARY
            echo "" >> $GITHUB_STEP_SUMMARY
            echo "\`\`\`diff" >> $GITHUB_STEP_SUMMARY
            echo "$DIFF" >> $GITHUB_STEP_SUMMARY
            echo "\`\`\`" >> $GITHUB_STEP_SUMMARY
            echo "</details>" >> $GITHUB_STEP_SUMMARY
            echo "modified=true" >> $GITHUB_OUTPUT
          else
            echo "::notice::WP versions data has not been modified."
            exit 0
          fi

      - name: Set git user
        if: steps.version-file.outputs.modified == 'true'
        run: |
          # See: https://api.github.com/users/github-actions[bot]
          git config --global user.name "github-actions[bot]"
          git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"

      - name: Commit WP Versions Data
        if: steps.version-file.outputs.modified == 'true'
        run: |
          git add $FILE_PATH
          git commit -m "Update $FILE_PATH on $(date -u)" --signoff

      - name: Push changes
        if: steps.version-file.outputs.modified == 'true'
        run: |
          git push origin ${{ env.FEATURE_BRANCH }}

      - name: Create Pull Request
        run: |
          body="## Summary
          Update WP versions data file with the \`${WP_ORG_API_URL}\` endpoint response."
          delimiter="${body//$'\n'/'%0A'}"
          echo "body<<${delimiter}" >> $GITHUB_OUTPUT
          echo "$body" >> $GITHUB_OUTPUT
          echo "${delimiter}" >> $GITHUB_OUTPUT
          gh pr create --base ${{ env.ARTIFACTS_BRANCH }} --head ${{ env.FEATURE_BRANCH }} --title "Update WP Versions Data" --body "$body" --label "scope:artifacts" || true
        env:
          GH_TOKEN: ${{ github.token }}