# GitHub Actions CI/CD Configuration for Towerops Agent
# Builds and publishes Docker image to GitHub Container Registry

name: CI

on:
  push:
    branches:
      - main
      - '**'
    tags:
      - 'v*'
  pull_request:
    branches:
      - main

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  test:
    name: Test
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install Rust toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: "1.91"
          components: rustfmt, clippy

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

      - name: Cache cargo registry
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: |
            ${{ runner.os }}-cargo-

      - name: Check
        run: cargo check --release

      - name: Format check
        run: cargo fmt -- --check

      - name: Test
        run: cargo test

      # Temporarily disabled:
      # - name: Clippy
      #   run: cargo clippy -- -D warnings

  build-branch:
    name: Build (Branch)
    needs: test
    runs-on: ubuntu-latest
    if: github.event_name == 'push' && github.ref != 'refs/heads/main' && !startsWith(github.ref, 'refs/tags/')
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract branch name
        id: branch
        run: echo "name=${GITHUB_REF#refs/heads/}" >> $GITHUB_OUTPUT

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          tags: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.branch.outputs.name }}
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

  build-main:
    name: Build (Main)
    needs: test
    runs-on: ubuntu-latest
    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0  # Needed for git describe

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Generate version info
        id: version
        run: |
          VERSION=$(git describe --tags --always --dirty=-modified | sed 's/^v//')
          TIMESTAMP=$(date +%Y%m%d-%H%M%S)
          SHORT_SHA=${GITHUB_SHA::7}
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "timestamp=$TIMESTAMP" >> $GITHUB_OUTPUT
          echo "short_sha=$SHORT_SHA" >> $GITHUB_OUTPUT
          echo "Building version $VERSION at $TIMESTAMP"

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64
          push: true
          build-args: |
            VERSION=${{ steps.version.outputs.version }}
          tags: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:main
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.version.outputs.version }}
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:main-${{ steps.version.outputs.short_sha }}
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:main-${{ steps.version.outputs.timestamp }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Summary
        run: |
          echo "### Built and pushed with tags:" >> $GITHUB_STEP_SUMMARY
          echo "- \`latest\` (for production)" >> $GITHUB_STEP_SUMMARY
          echo "- \`main\` (for Watchtower tracking)" >> $GITHUB_STEP_SUMMARY
          echo "- \`${{ steps.version.outputs.version }}\` (git describe)" >> $GITHUB_STEP_SUMMARY
          echo "- \`main-${{ steps.version.outputs.short_sha }}\` (commit)" >> $GITHUB_STEP_SUMMARY
          echo "- \`main-${{ steps.version.outputs.timestamp }}\` (timestamp)" >> $GITHUB_STEP_SUMMARY

  release:
    name: Release (Multi-arch)
    needs: test
    runs-on: ubuntu-latest
    if: startsWith(github.ref, 'refs/tags/v')
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract version from tag
        id: version
        run: |
          TAG=${GITHUB_REF#refs/tags/}
          VERSION=${TAG#v}
          echo "tag=$TAG" >> $GITHUB_OUTPUT
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "Releasing version: $VERSION"

      - name: Build and push (multi-arch)
        uses: docker/build-push-action@v6
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          build-args: |
            VERSION=${{ steps.version.outputs.version }}
          tags: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.version.outputs.version }}
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.version.outputs.tag }}
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Summary
        run: |
          echo "### Released version: ${{ steps.version.outputs.version }}" >> $GITHUB_STEP_SUMMARY
          echo "Multi-architecture build (amd64, arm64)" >> $GITHUB_STEP_SUMMARY