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: |
        if ! command -v node >/dev/null 2>&1 || [ "$(node -v | cut -d. -f1 | tr -d v)" -lt 20 ]; then
          curl -fsSL https://deb.nodesource.com/setup_20.x | bash -
          apt-get install -y -qq nodejs
        fi
        node -v
        npm -v

    - name: Install Trunk & Tools
      run: |
        . "$HOME/.cargo/env"
        if ! command -v trunk &> /dev/null; then
          cargo install trunk --locked
        fi
        
        # 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: Build MIPS Builder Image
      run: |
        if ! docker image inspect vibetorrent-mips-builder >/dev/null 2>&1; then
          docker build --platform linux/amd64 -t vibetorrent-mips-builder -f - . <<'DOCKERFILE'
        FROM ghcr.io/cross-rs/mips-unknown-linux-musl:main
        RUN apt-get update -qq && \
            apt-get install -y -qq curl ca-certificates && \
            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain nightly --component rust-src && \
            rm -rf /var/lib/apt/lists/*
        ENV PATH="/root/.cargo/bin:${PATH}"
        DOCKERFILE
        fi

    - name: Build Backend (MIPS)
      run: |
        docker run --rm \
          -v "$PWD":/project \
          -v cargo-mips-registry:/root/.cargo/registry \
          -w /project/backend \
          vibetorrent-mips-builder \
          bash -c '
            cargo build --target mips-unknown-linux-musl --release -Z build-std=std,panic_abort &&
            file /project/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."