name: Update Docker Image Tags and Release Helm Chart

on:
  schedule:
    - cron: '0 3 * * 1'  # 毎週月曜日 3:00 AM (JST 12:00 PM)
  workflow_dispatch:

env:
  REGISTRY_URL: https://git.cafepieters.com
  OWNER: helmchart

jobs:
  update-and-release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Install Helm
        uses: azure/setup-helm@v3
        with:
          version: 'v3.12.0'

      - name: Check jq availability
        run: |
          if ! command -v jq &> /dev/null; then
            echo "Installing jq..."
            apt-get update && apt-get install -y jq
          fi
          jq --version

      - name: Check for new n8n version
        id: n8n
        run: |
          set -e
          echo "Checking n8n versions..."
          CURRENT=$(grep "tag:" values.yaml | head -1 | sed 's/.*tag: *"\([^"]*\)".*/\1/' | tr -d ' ')
          echo "Current n8n: $CURRENT"

          LATEST=$(curl -s "https://registry.hub.docker.com/v2/repositories/n8nio/n8n/tags?page_size=100" | \
            jq -r '.results[].name' | \
            grep -E '^[0-9]+\.[0-9]+\.[0-9]+$' | \
            sort -V | tail -1)

          if [ -z "$LATEST" ]; then
            echo "Warning: Could not fetch latest n8n version, using current"
            LATEST="$CURRENT"
          fi

          echo "Latest n8n: $LATEST"
          echo "current=$CURRENT" >> $GITHUB_OUTPUT
          echo "latest=$LATEST" >> $GITHUB_OUTPUT

      - name: Determine update and release conditions
        id: check_update
        run: |
          set -e
          N8N_CURRENT="${{ steps.n8n.outputs.current }}"
          N8N_LATEST="${{ steps.n8n.outputs.latest }}"

          echo "n8n: $N8N_CURRENT vs $N8N_LATEST"

          UPDATE_NEEDED=false
          RELEASE_NEEDED=false

          if [ "$N8N_CURRENT" != "$N8N_LATEST" ]; then
            UPDATE_NEEDED=true
            RELEASE_NEEDED=true
            echo "Update and release needed"
          else
            echo "Already up to date"
          fi

          echo "update_needed=$UPDATE_NEEDED" >> $GITHUB_OUTPUT
          echo "release_needed=$RELEASE_NEEDED" >> $GITHUB_OUTPUT

      - name: Update values.yaml
        if: steps.check_update.outputs.update_needed == 'true'
        run: |
          set -e
          echo "Updating values.yaml..."
          N8N_OLD="${{ steps.n8n.outputs.current }}"
          N8N_NEW="${{ steps.n8n.outputs.latest }}"

          sed -i "s/tag: \"${N8N_OLD}\"/tag: \"${N8N_NEW}\"/" values.yaml
          echo "n8n updated: $N8N_OLD -> $N8N_NEW"

          echo "values.yaml updated"
          git diff values.yaml

      - name: Update Chart.yaml version
        if: steps.check_update.outputs.release_needed == 'true'
        run: |
          set -e
          APP_VERSION="${{ steps.n8n.outputs.latest }}"
          sed -i "s/^version: .*/version: \"$APP_VERSION\"/" Chart.yaml
          sed -i "s/^appVersion: .*/appVersion: \"$APP_VERSION\"/" Chart.yaml
          echo "Chart.yaml updated to version $APP_VERSION"
          cat Chart.yaml

      - name: Commit changes
        if: steps.check_update.outputs.update_needed == 'true'
        run: |
          git config user.name "Claude"
          git config user.email "claude@cafepieters.com"
          git add values.yaml Chart.yaml
          git commit -m "chore: update n8n to ${{ steps.n8n.outputs.latest }}"
          git push origin main

      - name: Package Helm Chart
        if: steps.check_update.outputs.release_needed == 'true'
        run: |
          helm package .
          echo "Helm chart packaged"

      - name: Create Git Tag
        if: steps.check_update.outputs.release_needed == 'true'
        run: |
          APP_VERSION="${{ steps.n8n.outputs.latest }}"
          if git rev-parse "v$APP_VERSION" >/dev/null 2>&1; then
            echo "Tag v$APP_VERSION already exists, skipping"
          else
            git tag -a "v$APP_VERSION" -m "Release n8n $APP_VERSION"
            git push origin "v$APP_VERSION"
            echo "Git tag v$APP_VERSION created"
          fi

      - name: Create Gitea Release
        if: steps.check_update.outputs.release_needed == 'true'
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          APP_VERSION="${{ steps.n8n.outputs.latest }}"
          CHART_NAME=$(grep '^name:' Chart.yaml | awk '{print $2}')
          PACKAGE_FILE="${CHART_NAME}-${APP_VERSION}.tgz"
          RELEASE_BODY="n8n Helm Chart v${APP_VERSION} - n8n: ${{ steps.n8n.outputs.latest }}"

          EXISTING=$(curl -s \
            -H "Authorization: token ${GITEA_TOKEN}" \
            "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/releases/tags/v${APP_VERSION}" | jq -r '.id // empty')

          if [ -n "$EXISTING" ]; then
            echo "Release v$APP_VERSION already exists (id=$EXISTING), skipping"
          else
            RELEASE_ID=$(curl -s -X POST \
              -H "Authorization: token ${GITEA_TOKEN}" \
              -H "Content-Type: application/json" \
              -d "{\"tag_name\":\"v${APP_VERSION}\",\"name\":\"v${APP_VERSION}\",\"body\":\"${RELEASE_BODY}\"}" \
              "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/releases" | jq -r '.id')

            curl -X POST \
              -H "Authorization: token ${GITEA_TOKEN}" \
              -H "Content-Type: application/gzip" \
              --data-binary "@${PACKAGE_FILE}" \
              "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/releases/${RELEASE_ID}/assets?name=${PACKAGE_FILE}"

            echo "Release v$APP_VERSION created with asset: ${PACKAGE_FILE}"
          fi

      - name: Publish to Gitea Package Registry
        if: steps.check_update.outputs.release_needed == 'true'
        run: |
          CHART_NAME=$(grep '^name:' Chart.yaml | awk '{print $2}')
          APP_VERSION="${{ steps.n8n.outputs.latest }}"
          PACKAGE_FILE="${CHART_NAME}-${APP_VERSION}.tgz"

          echo "Publishing ${PACKAGE_FILE} to Gitea Package Registry..."
          curl --fail-with-body \
            -u "${{ secrets.REGISTRY_USER }}:${{ secrets.REGISTRY_TOKEN }}" \
            -X POST \
            --upload-file "${PACKAGE_FILE}" \
            "${REGISTRY_URL}/api/packages/${OWNER}/helm/api/charts"

          echo "Chart published to registry successfully"

      - name: Summary
        run: |
          APP_VERSION="${{ steps.n8n.outputs.latest }}"
          UPDATE_NEEDED="${{ steps.check_update.outputs.update_needed }}"
          RELEASE_NEEDED="${{ steps.check_update.outputs.release_needed }}"
          echo "========================================"
          if [ "$UPDATE_NEEDED" = "true" ]; then
            echo "Update completed!"
          else
            echo "Already up to date, no changes."
          fi
          echo "========================================"
          echo "n8n: ${APP_VERSION}"
          if [ "$RELEASE_NEEDED" = "true" ]; then
            echo "Chart Version: ${APP_VERSION} (released)"
            echo "Registry: ${REGISTRY_URL}/api/packages/${OWNER}/helm"
          else
            echo "No release needed"
          fi
          echo "========================================"