---
# yaml-language-server: $schema=https://json.schemastore.org/github-workflow.json
name: Seerr Preview

on:
  push:
    tags:
      - 'preview-*'
  workflow_dispatch:

permissions:
  contents: read

concurrency:
  group: preview-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build:
    name: Build (per-arch, native runners)
    strategy:
      matrix:
        include:
          - runner: ubuntu-24.04
            platform: linux/amd64
            arch: amd64
          - runner: ubuntu-24.04-arm
            platform: linux/arm64
            arch: arm64
    runs-on: ${{ matrix.runner }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          persist-credentials: false

      - name: Commit timestamp
        id: ts
        run: echo "TIMESTAMP=$(git log -1 --pretty=%ct)" >> "$GITHUB_OUTPUT"

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

      - name: Derive preview version from tag
        id: ver
        shell: bash
        run: |
          TAG="${GITHUB_REF_NAME}"
          VER="${TAG#preview-}"
          VER="${VER#v}"
          echo "version=${VER}" >> "$GITHUB_OUTPUT"
          echo "Building preview version: ${VER}"

      - name: Warm cache (no push) — ${{ matrix.platform }}
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          platforms: ${{ matrix.platform }}
          push: false
          build-args: |
            COMMIT_TAG=${{ github.sha }}
            BUILD_VERSION=${{ steps.ver.outputs.version }}
            SOURCE_DATE_EPOCH=${{ steps.ts.outputs.TIMESTAMP }}
          cache-from: type=gha,scope=${{ matrix.platform }}
          cache-to: type=gha,mode=max,scope=${{ matrix.platform }}
          provenance: false

  publish:
    name: Publish multi-arch image
    needs: build
    runs-on: ubuntu-24.04
    permissions:
      contents: read
      packages: write
      id-token: write
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          persist-credentials: false

      - name: Commit timestamp
        id: ts
        run: echo "TIMESTAMP=$(git log -1 --pretty=%ct)" >> "$GITHUB_OUTPUT"

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

      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_TOKEN }}

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

      - name: Derive preview version from tag
        id: ver
        shell: bash
        run: |
          TAG="${GITHUB_REF_NAME}"
          VER="${TAG#preview-}"
          VER="${VER#v}"
          echo "version=${VER}" >> "$GITHUB_OUTPUT"
          echo "Publishing preview version: ${VER}"

      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: |
            ${{ github.repository }}
            ghcr.io/${{ github.repository }}
          tags: |
            type=raw,value=preview-${{ steps.ver.outputs.version }}
          labels: |
            org.opencontainers.image.version=preview-${{ steps.ver.outputs.version }}
            org.opencontainers.image.created=${{ steps.ts.outputs.TIMESTAMP }}

      - name: Build & Push (multi-arch, single tag)
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          build-args: |
            COMMIT_TAG=${{ github.sha }}
            BUILD_VERSION=${{ steps.ver.outputs.version }}
            SOURCE_DATE_EPOCH=${{ steps.ts.outputs.TIMESTAMP }}
          labels: ${{ steps.meta.outputs.labels }}
          tags: ${{ steps.meta.outputs.tags }}
          cache-from: |
            type=gha,scope=linux/amd64
            type=gha,scope=linux/arm64
          cache-to: type=gha,mode=max
          provenance: false