#!/bin/bash

set -euo pipefail

TARGET="${1:-}"

if [[ -z "$TARGET" ]]; then
  echo "ERROR: Missing TARGET (Mac or iOS)"
  exit 1
fi

echo "===================================="
echo " Unity CI Build (Mac Agent)"
echo " Target: $TARGET"
echo "===================================="

# -----------------------------
# Load toolchain config
# -----------------------------
CONFIG_FILE="./ci/toolchain.json"

UNITY_VERSION=$(cat "$CONFIG_FILE" | python3 -c "import sys, json; print(json.load(sys.stdin)['unityVersion'])")
UNITY_ROOT="/Applications/Unity/Hub/Editor"

UNITY_APP="$UNITY_ROOT/$UNITY_VERSION/Unity.app/Contents/MacOS/Unity"

HUB="/Applications/Unity Hub.app/Contents/MacOS/Unity Hub"

# -----------------------------
# Ensure Unity exists
# -----------------------------
if [[ ! -f "$UNITY_APP" ]]; then
  echo "Unity $UNITY_VERSION not found. Installing via Unity Hub..."

  "$HUB" -- --headless install \
    --version "$UNITY_VERSION"

  if [[ $? -ne 0 ]]; then
    echo "ERROR: Failed to install Unity $UNITY_VERSION"
    exit 1
  fi
fi

echo "Unity found at: $UNITY_APP"

# -----------------------------
# Ensure required modules
# -----------------------------
echo "Ensuring Unity modules..."

MODULES=$(cat "$CONFIG_FILE" | python3 -c "
import sys, json
print(' '.join(json.load(sys.stdin)['mac']['modules']))
")

for module in $MODULES; do

  echo "Checking module: $module"

  INSTALLED=$("$HUB" -- --headless editors --installed || true)

  if echo "$INSTALLED" | grep -q "$UNITY_VERSION.*$module"; then
    echo "Module already installed: $module"
  else
    echo "Installing module: $module"

    "$HUB" -- --headless install-modules \
      --version "$UNITY_VERSION" \
      --module "$module"

    if [[ $? -ne 0 ]]; then
      echo "ERROR: Failed to install module $module"
      exit 1
    fi
  fi

done

# -----------------------------
# Resolve Unity build method
# -----------------------------
case "$TARGET" in
  Mac)
    METHOD="BuildScript.Mac"
    ;;
  iOS)
    METHOD="BuildScript.iOS"
    ;;
  *)
    echo "ERROR: Unknown target: $TARGET"
    exit 1
    ;;
esac

echo "Using Unity method: $METHOD"

# -----------------------------
# Run Unity build
# -----------------------------
"$UNITY_APP" \
  -batchmode \
  -nographics \
  -quit \
  -projectPath "$(pwd)" \
  -executeMethod "$METHOD" \
  -logFile "build-$TARGET.log"

EXIT_CODE=$?

# -----------------------------
# Validate result
# -----------------------------
if [[ $EXIT_CODE -ne 0 ]]; then
  echo "===================================="
  echo " BUILD FAILED: $TARGET"
  echo "===================================="
  exit $EXIT_CODE
fi

echo "===================================="
echo " BUILD SUCCESS: $TARGET"
echo "===================================="