# SPDX-FileCopyrightText: 2026 Slavi Pantaleev
#
# SPDX-License-Identifier: AGPL-3.0-or-later

---
name: Renovate

on:  # yamllint disable-line rule:truthy
  schedule:
    # Discover new updates hourly. Reactive runs below drain active updates.
    - cron: '17 * * * *'
  workflow_dispatch:
    inputs:
      dry_run:
        description: 'Run without making changes'
        required: false
        default: true
        type: boolean
      log_level:
        description: 'Renovate log level'
        required: false
        default: 'info'
        type: choice
        options:
          - info
          - debug
          - trace
  push:
    branches: ['master']
  workflow_run:
    workflows: ['Matrix CI', 'Matrix i18n', 'Molecule']
    types: [completed]
    branches: ['renovate/**']
  issues:
    types: [edited]

permissions:
  contents: read

env:
  # Mend-hosted Renovate must remain disabled while this automation is enabled.
  # A manual dry-run remains available if this switch is disabled during migration.
  MATRIX_RENOVATE_AUTOMATION_ENABLED: 'true'

  # renovate: datasource=docker depName=matrix-renovate-runner packageName=ghcr.io/renovatebot/renovate
  MATRIX_RENOVATE_VERSION: '44.51.2'

jobs:
  preflight:
    name: Decide whether to run Renovate
    runs-on: ubuntu-latest
    outputs:
      should_run: ${{ steps.decision.outputs.should_run }}

    steps:
      - name: Evaluate trigger
        id: decision
        shell: bash
        env:
          GH_TOKEN: ${{ github.token }}
          EVENT_NAME: ${{ github.event_name }}
          EVENT_REF: ${{ github.ref }}
          MANUAL_DRY_RUN: ${{ inputs.dry_run }}
          WORKFLOW_RUN_CONCLUSION: ${{ github.event.workflow_run.conclusion }}
          WORKFLOW_RUN_EVENT: ${{ github.event.workflow_run.event }}
          ISSUE_TITLE: ${{ github.event.issue.title }}
          SENDER_TYPE: ${{ github.event.sender.type }}
        run: |
          set -euo pipefail

          should_run=false
          reason='Automatic Renovate processing is disabled during migration'

          if [[ "$EVENT_NAME" == 'workflow_dispatch' ]]; then
            if [[ "$EVENT_REF" != 'refs/heads/master' ]]; then
              reason='Manual runs must use the master branch'
            elif [[ "$MANUAL_DRY_RUN" == 'true' || "$MATRIX_RENOVATE_AUTOMATION_ENABLED" == 'true' ]]; then
              should_run=true
              reason='Running manually requested Renovate job'
            else
              reason='Enable automatic processing before requesting a write run'
            fi
          elif [[ "$MATRIX_RENOVATE_AUTOMATION_ENABLED" == 'true' ]]; then
            case "$EVENT_NAME" in
              schedule)
                should_run=true
                reason='Running scheduled update discovery'
                ;;
              workflow_run)
                if [[ "$WORKFLOW_RUN_CONCLUSION" == 'success' && "$WORKFLOW_RUN_EVENT" == 'push' ]]; then
                  should_run=true
                  reason='A Renovate branch passed one of its status-check workflows'
                else
                  reason='The completed check was not a successful Renovate branch push'
                fi
                ;;
              issues)
                if [[ "$ISSUE_TITLE" == 'Dependency Dashboard' && "$SENDER_TYPE" == 'User' ]]; then
                  should_run=true
                  reason='A user edited the Dependency Dashboard'
                else
                  reason='The issue edit was not a user editing the Dependency Dashboard'
                fi
                ;;
              push)
                renovate_branch_count="$(
                  gh api \
                    "repos/$GITHUB_REPOSITORY/git/matching-refs/heads/renovate" \
                    --jq 'length'
                )"
                if (( renovate_branch_count > 0 )); then
                  should_run=true
                  reason="master changed while ${renovate_branch_count} Renovate branch(es) exist"
                else
                  reason='master changed, but there are no Renovate branches to process'
                fi
                ;;
            esac
          fi

          echo "should_run=$should_run" >> "$GITHUB_OUTPUT"
          echo "$reason"

  renovate:
    name: Renovate
    needs: preflight
    if: needs.preflight.outputs.should_run == 'true'
    runs-on: ubuntu-latest
    environment: main
    concurrency:
      group: renovate
      cancel-in-progress: false

    steps:
      - name: Create Renovate App token
        id: renovate_token
        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
        with:
          client-id: ${{ vars.GH_APP_RENOVATE_CLIENT_ID }}
          private-key: ${{ secrets.GH_APP_RENOVATE_PRIVATE_KEY }}

      - name: Run Renovate
        uses: renovatebot/github-action@5402b206248e5a8c8427a15102702eb9c1793efc # v46.2.4
        with:
          token: ${{ steps.renovate_token.outputs.token }}
          renovate-version: ${{ env.MATRIX_RENOVATE_VERSION }}
        env:
          LOG_LEVEL: ${{ inputs.log_level || 'info' }}
          RENOVATE_DRY_RUN: ${{ github.event_name == 'workflow_dispatch' && inputs.dry_run && 'full' || '' }}
          # Permit the self-hosted App to adopt branches created by the Mend-hosted App.
          RENOVATE_GIT_IGNORED_AUTHORS: '["29139614+renovate[bot]@users.noreply.github.com"]'
          RENOVATE_IGNORE_PR_AUTHOR: 'true'
          RENOVATE_PLATFORM: github
          RENOVATE_PLATFORM_COMMIT: enabled
          RENOVATE_REPOSITORIES: ${{ github.repository }}