#!/usr/bin/env bash
# ---------------------------------------------------------------------------
# build_windows.sh — cross-compile SerumAlt VST3 for Windows using MinGW-w64
# ---------------------------------------------------------------------------
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
cd "$SCRIPT_DIR"

TOOLCHAIN_FILE="mingw64-toolchain.cmake"
BUILD_DIR="build_windows"
OUTPUT_DIR="SerumAlt_Windows"
PLUGIN_NAME="SerumAlt"

# 1. Check for the MinGW-w64 cross-compiler and exit if it is not found.
if ! command -v x86_64-w64-mingw32-g++ >/dev/null 2>&1; then
    echo "ERROR: x86_64-w64-mingw32-g++ not found." >&2
    echo "Please install the MinGW-w64 cross-compiler first, e.g.:" >&2
    echo "    sudo pacman -S mingw-w64-gcc" >&2
    exit 1
fi

echo "Found: $(command -v x86_64-w64-mingw32-g++)"

# 2. Generate the CMake toolchain file.
cat > "$TOOLCHAIN_FILE" <<'EOF'
set(CMAKE_SYSTEM_NAME Windows)
set(CMAKE_SYSTEM_PROCESSOR x86_64)

set(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc)
set(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)
set(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)
set(CMAKE_AR x86_64-w64-mingw32-ar)
set(CMAKE_RANLIB x86_64-w64-mingw32-ranlib)
set(CMAKE_STRIP x86_64-w64-mingw32-strip)

set(CMAKE_FIND_ROOT_PATH /usr/x86_64-w64-mingw32)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
EOF

echo "Wrote toolchain file: $TOOLCHAIN_FILE"

# 3. Configure with CMake + Ninja (VST3-only cross build, no test harness).
cmake -S . -B "$BUILD_DIR" -G Ninja \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_TOOLCHAIN_FILE="$TOOLCHAIN_FILE" \
    -DSERUMALT_BUILD_TESTS=OFF

# 4. Build the VST3 target.
cmake --build "$BUILD_DIR" --target SerumAlt_VST3

# 5. Inject the VST3 moduleinfo.json.
#    The automatic manifest step is disabled when cross-compiling (see
#    CMakeLists.txt), because JUCE's manifest helper is a host tool that would
#    otherwise be built as a Windows executable. The moduleinfo content is
#    deterministic and platform-independent: it depends only on the plugin's
#    name, manufacturer/plugin codes, and version, so we write the identical
#    file that the native helper generates. Keep it in sync with the metadata
#    in CMakeLists.txt (PLUGIN_CODE, PLUGIN_MANUFACTURER_CODE, VERSION).
VST3_BUNDLE="$BUILD_DIR/${PLUGIN_NAME}_artefacts/Release/VST3/$PLUGIN_NAME.vst3"
mkdir -p "$VST3_BUNDLE/Contents/Resources"
cat > "$VST3_BUNDLE/Contents/Resources/moduleinfo.json" <<'EOF'
{
  "Name": "SerumAlt",
  "Version": "1.0.0",
  "Factory Info": {
    "Vendor": "SerumAlt Audio",
    "URL": "",
    "E-Mail": "",
    "Flags": {
      "Unicode": true,
      "Classes Discardable": false,
      "Component Non Discardable": false,
    },
  },
  "Classes": [
    {
      "CID": "ABCDEF019182FAEB53616C7453657261",
      "Category": "Audio Module Class",
      "Name": "SerumAlt",
      "Vendor": "SerumAlt Audio",
      "Version": "1.0.0",
      "SDKVersion": "VST 3.7.8",
      "Sub Categories": [
        "Instrument",
        "Synth",
      ],
      "Class Flags": 2,
      "Cardinality": 2147483647,
      "Snapshots": [
      ],
    },
    {
      "CID": "ABCDEF011234ABCD53616C7453657261",
      "Category": "Component Controller Class",
      "Name": "SerumAlt",
      "Vendor": "SerumAlt Audio",
      "Version": "1.0.0",
      "SDKVersion": "VST 3.7.8",
      "Sub Categories": [
        "Instrument",
        "Synth",
      ],
      "Class Flags": 2,
      "Cardinality": 2147483647,
      "Snapshots": [
      ],
    },
    {
      "CID": "ABCDEF01C0DEF00D53616C7453657261",
      "Category": "Plugin Compatibility Class",
      "Name": "SerumAlt",
      "Vendor": "SerumAlt Audio",
      "Version": "1.0.0",
      "SDKVersion": "VST 3.7.8",
      "Class Flags": 0,
      "Cardinality": 2147483647,
      "Snapshots": [
      ],
    },
  ],
}
EOF

# 6. Copy the resulting .vst3 bundle to SerumAlt_Windows/.
mkdir -p "$OUTPUT_DIR"
rm -rf "$OUTPUT_DIR/$PLUGIN_NAME.vst3"
cp -R "$BUILD_DIR/${PLUGIN_NAME}_artefacts/Release/VST3/$PLUGIN_NAME.vst3" "$OUTPUT_DIR/"

echo
echo "Done. Windows VST3 plugin at: $SCRIPT_DIR/$OUTPUT_DIR/$PLUGIN_NAME.vst3"