name: Build Linux

on:
  workflow_dispatch:
    inputs:
      version:
        description: "Version to build (e.g. 0.9.0)"
        required: true

permissions:
  contents: write

jobs:
  frontend:
    name: Build frontend
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: pnpm/action-setup@v4
        with:
          version: latest

      - uses: actions/setup-node@v4
        with:
          node-version: 22
          cache: pnpm

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      - name: Build
        run: pnpm build

      - name: Upload dist
        uses: actions/upload-artifact@v4
        with:
          name: frontend-dist-linux
          path: dist/
          retention-days: 1

  tauri:
    name: Tauri (Linux x64)
    needs: frontend
    # Pin to 22.04 — libwebkit2gtk-4.1 ABI changed in 24.04 and AppImages
    # built there will not run on older distros.
    runs-on: ubuntu-22.04

    steps:
      - uses: actions/checkout@v4

      - name: Download frontend dist
        uses: actions/download-artifact@v4
        with:
          name: frontend-dist-linux
          path: dist/

      - name: Install system dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            libwebkit2gtk-4.1-dev \
            libappindicator3-dev \
            librsvg2-dev \
            patchelf

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          targets: x86_64-unknown-linux-gnu

      - name: Rust cache
        uses: Swatinem/rust-cache@v2
        with:
          workspaces: src-tauri

      - uses: pnpm/action-setup@v4
        with:
          version: latest

      - uses: actions/setup-node@v4
        with:
          node-version: 22
          cache: pnpm

      - name: Install JS dependencies
        run: pnpm install --frozen-lockfile

      - name: Download Suwayomi (Linux x64)
        run: |
          curl -fsSL \
            "https://github.com/Suwayomi/Suwayomi-Server/releases/download/v2.1.1867/Suwayomi-Server-v2.1.1867-linux-x64.tar.gz" \
            -o suwayomi-linux.tar.gz

          echo "b2344bd73c4e26bede63cdb4b44b1b4168d8a8500b3b2b1a0219519a3ef708fe  suwayomi-linux.tar.gz" | sha256sum -c -

          mkdir -p suwayomi-extracted
          tar -xzf suwayomi-linux.tar.gz -C suwayomi-extracted --strip-components=1

      - name: Stage Suwayomi bundle
        run: |
          mkdir -p src-tauri/binaries

          # Actual layout after --strip-components=1:
          #   bin/Suwayomi-Server.jar
          #   bin/catch_abort.so   ← already compiled, ship it directly
          #   jre/bin/java
          #   jre/lib/...
          #   electron/            ← ignored
          JAR="suwayomi-extracted/bin/Suwayomi-Server.jar"
          JAVA="suwayomi-extracted/jre/bin/java"
          CATCH="suwayomi-extracted/bin/catch_abort.so"

          for f in "$JAR" "$JAVA" "$CATCH"; do
            if [ ! -e "$f" ]; then
              echo "ERROR: expected file not found: $f"
              find suwayomi-extracted -type f | head -40
              exit 1
            fi
          done

          echo "JAR=$JAR  JAVA=$JAVA  CATCH=$CATCH"

          cp -r suwayomi-extracted src-tauri/binaries/suwayomi-bundle
          chmod +x src-tauri/binaries/suwayomi-bundle/jre/bin/java

      - name: Stage Linux launcher sidecar
        run: |
          # Tauri names externalBin sidecars as <name>-<target-triple> at build time.
          cp src-tauri/binaries/suwayomi-launcher-linux.sh \
             src-tauri/binaries/suwayomi-launcher-linux-x86_64-unknown-linux-gnu
          chmod +x src-tauri/binaries/suwayomi-launcher-linux-x86_64-unknown-linux-gnu

      - name: Set up FUSE for AppImage
        run: |
          sudo apt-get install -y libfuse2
          wget -q https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage
          chmod +x linuxdeploy-x86_64.AppImage
          ./linuxdeploy-x86_64.AppImage --appimage-extract
          echo "LINUXDEPLOY=$(pwd)/squashfs-root/AppRun" >> $GITHUB_ENV

      - name: Patch tauri.conf.json for CI
        run: |
          sed -i 's/"beforeBuildCommand": "pnpm build"/"beforeBuildCommand": ""/' src-tauri/tauri.conf.json

      - name: Build Tauri app
        run: pnpm tauri build --target x86_64-unknown-linux-gnu --config src-tauri/tauri.linux.conf.json

      - name: Upload Linux artifacts to release
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          VERSION: ${{ github.event.inputs.version }}
        run: |
          # Wait for the Windows workflow to have created the draft release.
          for i in $(seq 1 12); do
            RELEASE_ID=$(curl -s -H "Authorization: Bearer $GITHUB_TOKEN" \
              "https://api.github.com/repos/moku-project/Moku/releases" \
              | jq -r '.[] | select(.tag_name == "v'"$VERSION"'") | .id' | head -1)
            if [ -n "$RELEASE_ID" ]; then break; fi
            echo "Waiting for release to exist... attempt $i"
            sleep 15
          done

          if [ -z "$RELEASE_ID" ]; then
            echo "ERROR: Could not find release for v$VERSION after waiting"
            exit 1
          fi

          echo "Found release ID: $RELEASE_ID"

          upload_asset() {
            local file="$1"
            local name="$2"
            echo "Uploading $name..."
            curl -s -X POST \
              -H "Authorization: Bearer $GITHUB_TOKEN" \
              -H "Content-Type: application/octet-stream" \
              --data-binary @"$file" \
              "https://uploads.github.com/repos/moku-project/Moku/releases/$RELEASE_ID/assets?name=$name"
          }

          APPIMAGE=$(find src-tauri/target/x86_64-unknown-linux-gnu/release/bundle/appimage -name "*.AppImage" | head -1)
          DEB=$(find src-tauri/target/x86_64-unknown-linux-gnu/release/bundle/deb -name "*.deb" | head -1)

          [ -n "$APPIMAGE" ] && upload_asset "$APPIMAGE" "moku-linux-x64-${VERSION}.AppImage"
          [ -n "$DEB"      ] && upload_asset "$DEB"      "moku-linux-x64-${VERSION}.deb"