"""
数据预处理脚本
"""

import json
import argparse
import os
import sys

sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))

from finetunex.data import preprocess_data, validate_dataset
from finetunex.data.dataset import load_dataset


def convert_to_alpaca_format(input_file, output_file):
    """转换为 Alpaca 格式"""
    with open(input_file, "r", encoding="utf-8") as f:
        data = json.load(f)
    
    alpaca_data = []
    for item in data:
        alpaca_item = {
            "instruction": item.get("instruction", ""),
            "input": item.get("input", ""),
            "output": item.get("output", ""),
        }
        alpaca_data.append(alpaca_item)
    
    with open(output_file, "w", encoding="utf-8") as f:
        json.dump(alpaca_data, f, ensure_ascii=False, indent=2)
    
    print(f"已转换 {len(alpaca_data)} 条数据到 {output_file}")


def main():
    parser = argparse.ArgumentParser(description="数据预处理工具")
    parser.add_argument("--input", type=str, required=True, help="输入文件路径")
    parser.add_argument("--output", type=str, help="输出文件路径")
    parser.add_argument("--template", type=str, default="default", 
                       choices=["default", "alpaca", "chat"], help="模板类型")
    parser.add_argument("--validate", action="store_true", help="验证数据集")
    
    args = parser.parse_args()
    
    # 加载数据集
    dataset = load_dataset(args.input, format="json")
    
    # 验证数据集
    if args.validate:
        if not validate_dataset(dataset):
            print("数据集验证失败！")
            return
    
    # 预处理数据
    data_list = list(dataset)
    processed = preprocess_data(data_list, template=args.template)
    
    # 保存结果
    if args.output:
        with open(args.output, "w", encoding="utf-8") as f:
            json.dump(processed, f, ensure_ascii=False, indent=2)
        print(f"已保存 {len(processed)} 条数据到 {args.output}")
    else:
        print(f"处理完成，共 {len(processed)} 条数据")


if __name__ == "__main__":
    main()