#!/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 "$0")" && pwd)"
PROJECT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
MOD_DIR="$PROJECT_DIR/mod"
OUTPUT_DIR="$MOD_DIR/bin"

ONI_PATH="${ONI_PATH:-}"
if [ -z "$ONI_PATH" ]; then
    for candidate in \
        "$HOME/.steam/steam/steamapps/common/OxygenNotIncluded" \
        "$HOME/.local/share/Steam/steamapps/common/OxygenNotIncluded" \
        "/c/Program Files (x86)/Steam/steamapps/common/OxygenNotIncluded" \
        "/mnt/c/Program Files (x86)/Steam/steamapps/common/OxygenNotIncluded"; do
        MANAGED="$candidate/OxygenNotIncluded_Data/Managed"
        if [ -d "$MANAGED" ]; then
            ONI_PATH="$MANAGED"
            break
        fi
    done
fi

if [ -z "$ONI_PATH" ]; then
    echo "[!] ONI installation not found."
    echo "    Set ONI_PATH to the Managed directory:"
    echo '    export ONI_PATH="/path/to/OxygenNotIncluded_Data/Managed"'
    exit 1
fi

echo "[Build] ONI: $ONI_PATH"

for dll in "$ONI_PATH/Assembly-CSharp.dll" "$ONI_PATH/UnityEngine.dll" \
           "$ONI_PATH/UnityEngine.CoreModule.dll" "$ONI_PATH/0Harmony.dll"; do
    if [ ! -f "$dll" ]; then echo "[!] Missing: $dll"; exit 1; fi
done

mkdir -p "$OUTPUT_DIR"

REFS=""
for dll in "$ONI_PATH/Assembly-CSharp.dll" "$ONI_PATH/UnityEngine.dll" \
           "$ONI_PATH/UnityEngine.CoreModule.dll" "$ONI_PATH/0Harmony.dll"; do
    REFS="$REFS -reference:\"$dll\""
done
if [ -f "$ONI_PATH/Assembly-CSharp-firstpass.dll" ]; then
    REFS="$REFS -reference:\"$ONI_PATH/Assembly-CSharp-firstpass.dll\""
fi

echo "[Build] Compiling..."
eval mcs -target:library -out:"$OUTPUT_DIR/ONIAgentBridge.dll" $REFS -recurse:"$MOD_DIR/*.cs"

echo "[Build] SUCCESS: $OUTPUT_DIR/ONIAgentBridge.dll"
echo ""
echo "Install (Linux):"
echo "  MOD_DIR=~/.config/unity3d/Klei/OxygenNot\\ Included/mods/local/ONIAgentBridge"
echo "  mkdir -p \"\$MOD_DIR\""
echo "  cp $OUTPUT_DIR/ONIAgentBridge.dll $MOD_DIR/mod_info.yaml \"\$MOD_DIR/\""
echo "  # Then enable mod in ONI > Mods > ONI Agent Bridge"