#!/usr/bin/env bash
# Build the ONI Agent Bridge Mod
# Requires: mono-complete (for mcs compiler)
# Requires: ONI game installed to get reference DLLs
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
MOD_DIR="$SCRIPT_DIR/mod"
OUTPUT_DIR="$MOD_DIR/bin"

# Find ONI installation
ONI_PATH="${ONI_PATH:-}"
if [ -z "$ONI_PATH" ]; then
    # Common paths
    for candidate in \
        "$HOME/.local/share/Steam/steamapps/common/OxygenNotIncluded" \
        "$HOME/Library/Application Support/Steam/steamapps/common/OxygenNotIncluded" \
        "/c/Program Files (x86)/Steam/steamapps/common/OxygenNotIncluded" \
        "/mnt/c/Program Files (x86)/Steam/steamapps/common/OxygenNotIncluded"; do
        if [ -d "$candidate" ]; then
            ONI_PATH="$candidate"
            break
        fi
    done
fi

if [ -z "$ONI_PATH" ]; then
    echo "[!] ONI installation not found. Set ONI_PATH environment variable."
    echo "    export ONI_PATH=/path/to/OxygenNotIncluded"
    exit 1
fi

echo "[Build] ONI path: $ONI_PATH"

# Check required DLLs
GAME_DLLS=(
    "$ONI_PATH/Assembly-CSharp.dll"
    "$ONI_PATH/Assembly-CSharp-firstpass.dll"
    "$ONI_PATH/UnityEngine.dll"
    "$ONI_PATH/UnityEngine.CoreModule.dll"
    "$ONI_PATH/0Harmony.dll"
)

for dll in "${GAME_DLLS[@]}"; do
    if [ ! -f "$dll" ]; then
        echo "[!] Required DLL not found: $dll"
        exit 1
    fi
done

echo "[Build] Found all required DLLs"

mkdir -p "$OUTPUT_DIR"

# Compile
mcs -target:library \
    -out:"$OUTPUT_DIR/ONIAgentBridge.dll" \
    -reference:"$ONI_PATH/Assembly-CSharp.dll" \
    -reference:"$ONI_PATH/Assembly-CSharp-firstpass.dll" \
    -reference:"$ONI_PATH/UnityEngine.dll" \
    -reference:"$ONI_PATH/UnityEngine.CoreModule.dll" \
    -reference:"$ONI_PATH/0Harmony.dll" \
    -recurse:"$MOD_DIR/*.cs"

echo "[Build] Compilation successful!"
echo "[Build] Output: $OUTPUT_DIR/ONIAgentBridge.dll"
echo ""
echo "To install: copy $OUTPUT_DIR/ONIAgentBridge.dll and $MOD_DIR/mod_info.yaml"
echo "  to your ONI mods/local/ONIAgentBridge/ directory"