name: Build & Release

on:
  push:
    tags:
      - "v*"          # trigger on version tags like v1.0.0
  workflow_dispatch:   # allow manual trigger

permissions:
  contents: write      # needed to create releases

jobs:
  build:
    strategy:
      fail-fast: false
      matrix:
        include:
          - os: windows-latest
            artifact: 8cut-windows
          - os: macos-latest      # Apple Silicon
            artifact: 8cut-macos-arm64

    runs-on: ${{ matrix.os }}

    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-python@v5
        with:
          python-version: "3.12"

      # ── Install Python deps ──────────────────────────────────
      - name: Install Python dependencies
        run: |
          pip install pyinstaller PyQt6 python-mpv

      # ── Windows: fetch ffmpeg + libmpv ───────────────────────
      - name: Fetch ffmpeg (Windows)
        if: runner.os == 'Windows'
        shell: pwsh
        run: |
          # ffmpeg static build
          $ffUrl = "https://github.com/BtbN/FFmpeg-Builds/releases/download/latest/ffmpeg-master-latest-win64-gpl.zip"
          Invoke-WebRequest $ffUrl -OutFile ffmpeg.zip
          Expand-Archive ffmpeg.zip -DestinationPath ffmpeg-tmp
          $bin = Get-ChildItem -Path ffmpeg-tmp -Recurse -Filter ffmpeg.exe | Select-Object -First 1
          Copy-Item "$($bin.DirectoryName)\ffmpeg.exe" .
          Copy-Item "$($bin.DirectoryName)\ffprobe.exe" .

      - name: Fetch libmpv (Windows)
        if: runner.os == 'Windows'
        shell: pwsh
        run: |
          # shinchiro libmpv dev build
          $mpvUrl = "https://github.com/shinchiro/mpv-winbuild-cmake/releases/latest"
          # Get redirect URL to find latest tag
          $release = Invoke-WebRequest $mpvUrl -MaximumRedirection 0 -ErrorAction SilentlyContinue
          $tag = ($release.Headers.Location -split '/')[-1]
          $dlUrl = "https://github.com/shinchiro/mpv-winbuild-cmake/releases/download/$tag/mpv-dev-x86_64-v3-${tag}.7z"
          Invoke-WebRequest $dlUrl -OutFile mpv-dev.7z
          7z x mpv-dev.7z -ompv-dev
          Copy-Item mpv-dev\libmpv-2.dll .

      # ── macOS: install via Homebrew ──────────────────────────
      - name: Install native deps (macOS)
        if: runner.os == 'macOS'
        run: |
          brew install mpv ffmpeg
          # Copy dylibs so PyInstaller bundles them
          MPV_LIB=$(brew --prefix mpv)/lib/libmpv.2.dylib
          cp "$MPV_LIB" .
          cp "$(brew --prefix ffmpeg)/bin/ffmpeg" .
          cp "$(brew --prefix ffmpeg)/bin/ffprobe" .

      # ── Build ────────────────────────────────────────────────
      - name: Build with PyInstaller
        run: pyinstaller 8cut.spec

      # ── Fix macOS dylib paths ────────────────────────────────
      - name: Fix dylib rpaths (macOS)
        if: runner.os == 'macOS'
        run: |
          # Rewrite libmpv load path to be relative
          DYLIB="dist/8cut/libmpv.2.dylib"
          if [ -f "$DYLIB" ]; then
            install_name_tool -id @executable_path/libmpv.2.dylib "$DYLIB"
          fi

      # ── Package ──────────────────────────────────────────────
      - name: Package (Windows)
        if: runner.os == 'Windows'
        shell: pwsh
        run: Compress-Archive -Path dist\8cut\* -DestinationPath ${{ matrix.artifact }}.zip

      - name: Package (macOS)
        if: runner.os == 'macOS'
        run: |
          cd dist
          zip -r ../${{ matrix.artifact }}.zip 8cut.app

      # ── Upload artifact ──────────────────────────────────────
      - name: Upload build artifact
        uses: actions/upload-artifact@v4
        with:
          name: ${{ matrix.artifact }}
          path: ${{ matrix.artifact }}.zip

  # ── Create GitHub Release ──────────────────────────────────
  release:
    needs: build
    runs-on: ubuntu-latest
    if: startsWith(github.ref, 'refs/tags/v')

    steps:
      - name: Download all artifacts
        uses: actions/download-artifact@v4
        with:
          path: artifacts

      - name: Create Release
        uses: softprops/action-gh-release@v2
        with:
          draft: true
          generate_release_notes: true
          files: artifacts/**/*.zip