name: Build MIPS Binary

on:
  push:
    branches: [ "main" ]

env:
  CARGO_TERM_COLOR: always

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout
      env:
        GIT_TOKEN: ${{ secrets.RELEASE_TOKEN }}
      run: |
        rm -rf .git
        git init .
        git remote add origin https://admin:${GIT_TOKEN}@git.karatatar.com/admin/vibetorrent.git
        git fetch --depth=1 origin ${{ gitea.sha }}
        git checkout FETCH_HEAD

    - name: Setup Rust
      run: |
        if ! command -v rustup >/dev/null 2>&1; then
          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
        fi
        . "$HOME/.cargo/env"
        rustup toolchain install nightly --profile minimal
        rustup default nightly
        rustup target add wasm32-unknown-unknown
        rustup component add rust-src
        rustc --version

    - name: Setup Node.js
      run: |
        # Download and install Node.js manually to ensure correct version and PATH
        NODE_VER="v20.11.1"
        ARCH=""
        case $(uname -m) in
          x86_64) ARCH="x64" ;;
          aarch64) ARCH="arm64" ;;
          *) echo "Unsupported architecture: $(uname -m)"; exit 1 ;;
        esac
        
        echo "Installing Node.js $NODE_VER for $ARCH..."
        curl -fsSL "https://nodejs.org/dist/$NODE_VER/node-$NODE_VER-linux-$ARCH.tar.xz" -o node.tar.xz
        
        # Install to a local directory
        mkdir -p "$HOME/.node"
        tar -xJf node.tar.xz -C "$HOME/.node" --strip-components=1
        
        # Helper to update PATH for this step and future steps
        echo "$HOME/.node/bin" >> $GITHUB_PATH
        export PATH="$HOME/.node/bin:$PATH"
        
        echo "Node.js installed:"
        node -v
        npm -v

    - name: Verify Node.js
      run: |
        node -v
        npm -v

    - name: Install Trunk & Tools
      run: |
        . "$HOME/.cargo/env"
        # Download pre-built trunk binary to save huge compilation time
        TRUNK_VER="v0.21.5"
        ARCH=$(uname -m)
        TRUNK_ARCH=""
        
        if [ "$ARCH" = "x86_64" ]; then
             TRUNK_ARCH="x86_64-unknown-linux-gnu"
        elif [ "$ARCH" = "aarch64" ]; then
             TRUNK_ARCH="aarch64-unknown-linux-gnu"
        fi
        
        if ! command -v trunk &> /dev/null; then
          if [ -n "$TRUNK_ARCH" ]; then
              echo "Downloading trunk $TRUNK_VER for $TRUNK_ARCH..."
              wget -qO- "https://github.com/trunk-rs/trunk/releases/download/$TRUNK_VER/trunk-$TRUNK_ARCH.tar.gz" | tar -xzf -
              mv trunk "$HOME/.cargo/bin/"
              chmod +x "$HOME/.cargo/bin/trunk"
          else
              echo "No pre-built binary for $ARCH, compiling from source (slow)..."
              cargo install trunk
          fi
        fi
        trunk --version
        
        # Install wasm-bindgen-cli from source because the prebuilt binary downloaded
        # by trunk relies on a newer glibc than this runner has.
        REQUIRED_VER="0.2.108"
        if ! command -v wasm-bindgen &> /dev/null || [ "$(wasm-bindgen --version | cut -d' ' -f2)" != "$REQUIRED_VER" ]; then
             echo "Installing wasm-bindgen-cli $REQUIRED_VER from source..."
             cargo install wasm-bindgen-cli --version "$REQUIRED_VER" --force
        else
             echo "wasm-bindgen-cli $REQUIRED_VER already installed."
        fi

    - name: Build Frontend
      run: |
        . "$HOME/.cargo/env"
        cd frontend
        npm install
        # Run Tailwind manually first to debug any errors, as trunk swallows hook output sometimes
        npx @tailwindcss/cli -i input.css -o public/tailwind.css
        trunk build --release

    - name: Setup Zig & Cross Setup
      run: |
        # Install Zig for cross-compilation (easier/cleaner than GCC + Cargo wrappers without Docker)
        ZIG_VER="0.13.0"
        ARCH=$(uname -m)
        if [ "$ARCH" = "x86_64" ]; then ZIG_ARCH="x86_64"; fi
        if [ "$ARCH" = "aarch64" ]; then ZIG_ARCH="aarch64"; fi
        
        echo "Downloading Zig $ZIG_VER for $ZIG_ARCH..."
        curl -fsSL "https://ziglang.org/download/$ZIG_VER/zig-linux-$ZIG_ARCH-$ZIG_VER.tar.xz" -o zig.tar.xz
        tar -xf zig.tar.xz
        mv "zig-linux-$ZIG_ARCH-$ZIG_VER" "$HOME/zig"
        
        # Add Zig to PATH
        echo "$HOME/zig" >> $GITHUB_PATH
        export PATH="$HOME/zig:$PATH"
        
        zig version
        
        # Install cargo-zigbuild
        . "$HOME/.cargo/env"
        cargo install cargo-zigbuild

    - name: Build Backend (MIPS)
      run: |
        . "$HOME/.cargo/env"
        export PATH="$HOME/zig:$PATH"
        cd backend
        
        # Use cargo-zigbuild to cross-compile
        # mips-unknown-linux-musl matches zig target mips-linux-musl
        
        cargo zigbuild --target mips-unknown-linux-musl --release -Z build-std=std,panic_abort
        
        file target/mips-unknown-linux-musl/release/backend

    - name: Rename Binary
      run: mv target/mips-unknown-linux-musl/release/backend target/mips-unknown-linux-musl/release/vibetorrent-mips

    - name: Generate Release Tag
      id: tag
      run: echo "release_tag=release-$(date +'%Y%m%d-%H%M')" >> "$GITHUB_OUTPUT"

    - name: Create Release
      env:
        RELEASE_TOKEN: ${{ secrets.RELEASE_TOKEN }}
      run: |
        TAG="${{ steps.tag.outputs.release_tag }}"
        REPO="admin/vibetorrent"
        API_URL="${{ gitea.server_url }}/api/v1"

        # Create release
        RELEASE_RESPONSE=$(curl -s -X POST "${API_URL}/repos/${REPO}/releases" \
          -H "Authorization: token ${RELEASE_TOKEN}" \
          -H "Content-Type: application/json" \
          -d "{
            \"tag_name\": \"${TAG}\",
            \"name\": \"Release ${TAG}\",
            \"body\": \"Automated build from commit ${{ gitea.sha }}\",
            \"draft\": false,
            \"prerelease\": false
          }")

        RELEASE_ID=$(echo "$RELEASE_RESPONSE" | jq -r '.id')
        echo "Release ID: $RELEASE_ID"

        if [ "$RELEASE_ID" = "null" ] || [ -z "$RELEASE_ID" ]; then
          echo "Failed to create release:"
          echo "$RELEASE_RESPONSE"
          exit 1
        fi

        # Upload binary as release asset
        curl -s -X POST "${API_URL}/repos/${REPO}/releases/${RELEASE_ID}/assets?name=vibetorrent-mips" \
          -H "Authorization: token ${RELEASE_TOKEN}" \
          -H "Content-Type: application/octet-stream" \
          --data-binary @target/mips-unknown-linux-musl/release/vibetorrent-mips

        echo "Release ${TAG} created with binary attached."