"""Migrate flash_profiles.json from single binary_path to golden/user binary paths.

This script updates the JSON file to match the new FlashTarget structure.
"""
import json
from pathlib import Path


def migrate_profiles_json():
    """Migrate flash_profiles.json to new format."""
    json_path = Path("flash_profiles.json")
    
    if not json_path.exists():
        print("flash_profiles.json not found")
        return
    
    # Load existing data
    with open(json_path, 'r', encoding='utf-8') as f:
        data = json.load(f)
    
    # Migrate targets
    migrated_count = 0
    for target_id, target in data.get('targets', {}).items():
        # Check if migration needed
        if 'binary_path' in target and 'golden_binary_path' not in target:
            # Move binary_path to user_binary_path (default)
            old_binary = target.pop('binary_path')
            target['golden_binary_path'] = None
            target['user_binary_path'] = old_binary
            migrated_count += 1
            print(f"Migrated {target_id}: binary_path -> user_binary_path")
    
    if migrated_count > 0:
        # Save updated data
        with open(json_path, 'w', encoding='utf-8') as f:
            json.dump(data, f, indent=2)
        
        print(f"\n✅ Migrated {migrated_count} targets successfully")
        print(f"Updated file: {json_path}")
    else:
        print("No migration needed - file is already up to date")


if __name__ == "__main__":
    migrate_profiles_json()