#!/bin/bash
#
# Maya Auto-Patcher
# Detects version, applies patches, verifies installation
#

set -e

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
PATCHER_BIN="$PROJECT_DIR/core/maya_patcher"
PATCH_DB="$PROJECT_DIR/config/patches.json"

echo "=== Maya Auto-Patcher ==="
echo ""

# Detect Maya version
echo "Step 1: Detecting Maya installation..."
MAYA_INFO=$(python3 "$PROJECT_DIR/updater/detect_maya.py" 2>/dev/null | python3 -c "
import sys, json
for line in sys.stdin:
    if line.startswith('{'):
        data = json.loads(line)
        if data.get('found') and data.get('installations'):
            inst = data['installations'][0]
            print(f\"{inst['version']}|{inst['path']}\")
            sys.exit(0)
print('NOT_FOUND|')
")

if [[ "$MAYA_INFO" == "NOT_FOUND|"* ]]; then
    echo "ERROR: No Maya installation found!"
    exit 1
fi

MAYA_VERSION=$(echo "$MAYA_INFO" | cut -d'|' -f1)
MAYA_PATH=$(echo "$MAYA_INFO" | cut -d'|' -f2)

echo "  Found Maya $MAYA_VERSION at $MAYA_PATH"
echo ""

# Check if patcher is built
if [[ ! -f "$PATCHER_BIN" ]]; then
    echo "Step 2: Building patcher..."
    cd "$PROJECT_DIR/core"
    gcc -Wall -o maya_patcher maya_patcher.c -ljson-c
    echo "  Patcher built successfully"
    echo ""
fi

# Apply patches
echo "Step 3: Applying patches for Maya $MAYA_VERSION..."
$PATCHER_BIN "$MAYA_VERSION" "$PATCH_DB"
PATCH_RESULT=$?

if [[ $PATCH_RESULT -eq 0 ]]; then
    echo ""
    echo "✓ Patches applied successfully!"
else
    echo ""
    echo "✗ Some patches failed to apply"
    exit 1
fi

# Verify patches
echo ""
echo "Step 4: Verifying patches..."
LIB_PATH="/usr/autodesk/maya${MAYA_VERSION}/lib/libAdskLicensingSDK.so.10.0.1.66"

if [[ -f "$LIB_PATH.backup" ]]; then
    echo "  Backup exists: $LIB_PATH.backup"
    
    # Compare files to ensure they're different
    if ! cmp -s "$LIB_PATH" "$LIB_PATH.backup"; then
        echo "  ✓ Library has been modified (different from backup)"
    else
        echo "  ✗ Library appears unchanged!"
        exit 1
    fi
else
    echo "  Warning: No backup found"
fi

echo ""
echo "=== Auto-Patch Complete ==="
echo ""
echo "Maya $MAYA_VERSION has been patched."
echo "You can now launch Maya without license validation."
echo ""
echo "To restore original library:"
echo "  cp $LIB_PATH.backup $LIB_PATH"