import json
import openai
import google.generativeai as genai
import time
from collections import defaultdict
from typing import Dict, List
import os
from tqdm import tqdm
import argparse

class PoetryEvaluator:
    def __init__(self, api_key: str, provider: str = "openai", model: str = "gpt-3.5-turbo", 
                 dry_run: bool = False, delay: float = 0.5, max_retries: int = 3, retry_delay: float = 1.0):
        """初始化评测器
        Args:
            api_key: API密钥
            provider: API提供商 ("openai" 或 "google")
            model: 模型名称
            dry_run: 是否为演示模式
            delay: API调用间隔时间(秒)
            max_retries: 最大重试次数
            retry_delay: 重试等待时间(秒)
        """
        self.api_key = api_key
        self.provider = provider
        self.model = model
        self.dry_run = dry_run
        self.delay = delay
        self.max_retries = max_retries
        self.retry_delay = retry_delay
        self.results = defaultdict(list)
        
        # 根据provider初始化API
        if provider == "google":
            genai.configure(api_key=api_key)
            self.generation_config = {
                "temperature": 0,
                "top_p": 0.95,
                "top_k": 64,
                "max_output_tokens": 8192,
            }
            self.google_model = genai.GenerativeModel(
                model_name=model,
                generation_config=self.generation_config
            )

    def load_benchmark(self, jsonl_path: str) -> List[Dict]:
        """加载评测数据集"""
        questions = []
        with open(jsonl_path, 'r', encoding='utf-8') as f:
            for line in f:
                if line.strip():
                    questions.append(json.loads(line))
        return questions

    def generate_prompt(self, question: Dict) -> str:
        """根据题型生成提示词"""
        q_type = question['type']
        author = question['metadata']['author']
        content = question['content']['question']
        
        prompts = {
            'couplet': "请将下面的诗句补充完整。只需要回答括号（）之内的内容，不需要进行解释。\n\n",
            'hint_words': "请将以下包含星号的诗句补充完整。回答补充后的完整诗句，不需要进行解释。\n\n",
            'find_poetry': "请从以下给出的多行诗句中，从每一行提取出一个字，组成一句有效的诗句。只需要回答找到的诗句，不需要进行解释。\n\n",
            'blank_filling': "请将下面的诗句补充完整。只需要回答括号（）之内的内容，不需要进行解释。\n\n",
            'first_last_words': "请将以下包含星号的诗句补充完整。回答补充后的完整诗句，不需要进行解释。\n\n"
        }
        if author != None:
            return prompts[q_type] + f"{author}: {content}"
        else:
            return prompts[q_type] + content

    def normalize_answer(self, answer: str) -> str:
        """标准化答案格式"""
        return answer.strip().replace('。', '').replace('，', '')
    
    def evaluate_answer(self, prediction: str, ground_truth: str) -> bool:
        """评估答案是否正确
        只要模型输出中包含正确答案就算对
        """
        pred = self.normalize_answer(prediction)
        truth = self.normalize_answer(ground_truth)
        
        # 如果答案中包含多个可能的正确答案(用/分隔)
        if '/' in truth:
            possible_answers = [ans.strip() for ans in truth.split('/')]
            return any(ans in pred for ans in possible_answers)
        
        # 否则检查输出中是否包含正确答案
        return truth in pred

    def call_api_with_retry(self, prompt: str) -> str:
        """带重试机制的API调用
        Args:
            prompt: 提示词
        Returns:
            模型回复文本
        """
        retries = 0
        while True:
            try:
                if self.provider == "openai":
                    client = openai.OpenAI(
                        api_key=self.api_key,
                        base_url=openai.api_base
                    )
                    
                    response = client.chat.completions.create(
                        model=self.model,
                        messages=[
                            {"role": "system", "content": "你是一个古诗词专家。"},
                            {"role": "user", "content": prompt}
                        ],
                        temperature=0
                    )
                    return response.choices[0].message.content
                
                elif self.provider == "google":
                    chat = self.google_model.start_chat(
                        history=[
                            {"role": "user", "parts": ["你是一个古诗词专家。"]}
                        ]
                    )
                    response = chat.send_message(prompt)
                    return response.text

            except Exception as e:
                retries += 1
                if retries > self.max_retries:
                    raise e
                
                # 对于限流错误,使用指数退避策略
                if "429" in str(e):
                    wait_time = self.retry_delay * (2 ** (retries - 1))
                    print(f"\n遇到限流,等待 {wait_time} 秒后重试 ({retries}/{self.max_retries})...")
                    time.sleep(wait_time)
                else:
                    raise e

    def evaluate_single(self, question: Dict) -> Dict:
        """评估单个问题"""
        prompt = self.generate_prompt(question)
        
        try:
            if self.dry_run:
                prediction = f"[DRY RUN] 这是问题 {question['id']} 的模拟答案"
            else:
                prediction = self.call_api_with_retry(prompt)
                # 添加调用间隔
                time.sleep(self.delay)
            
            is_correct = self.evaluate_answer(prediction, question['content']['answer'])
            
            return {
                'id': question['id'],
                'type': question['type'],
                'difficulty': question['difficulty'],
                'metadata': question['metadata'],
                'prompt': prompt,
                'prediction': prediction,
                'ground_truth': question['content']['answer'],
                'is_correct': is_correct
            }
            
        except Exception as e:
            print(f"Error evaluating question {question['id']}: {str(e)}")
            return None

    def evaluate_all(self, questions: List[Dict]):
        """评估所有问题"""
        # 初始化计数器
        total = len(questions)
        correct = 0
        
        # 创建进度条
        pbar = tqdm(questions, desc="Evaluating")
        
        for question in pbar:
            result = self.evaluate_single(question)
            if result:
                self.results['all'].append(result)
                self.results[result['type']].append(result)
                self.results[result['difficulty']].append(result)
                if result['metadata']['dynasty']:
                    self.results[result['metadata']['dynasty']].append(result)
                
                # 更新计数
                if result['is_correct']:
                    correct += 1
                
                # 更新进度条描述
                accuracy = correct / len(self.results['all']) * 100
                pbar.set_description(
                    f"Accuracy: {accuracy:.2f}% ({correct}/{len(self.results['all'])})"
                )
                
                # 打印详细信息
                print(f"\n问题 {result['id']} ({result['type']}, {result['difficulty']}):")
                print(f"提示: {result['prompt']}")
                print(f"预测: {result['prediction']}")
                print(f"答案: {result['ground_truth']}")
                print(f"结果: {'✓' if result['is_correct'] else '✗'}\n")
                
                # 每次评测后更新总体准确率
                print(f"当前总体准确率: {accuracy:.2f}%")
                print("-" * 80)

    def generate_report(self) -> Dict:
        """生成评测报告"""
        report = {
            'overall': self._calculate_metrics(self.results['all']),
            'by_type': {},
            'by_difficulty': {},
            'by_dynasty': {}
        }
        
        # 按题型统计
        for q_type in ['couplet', 'hint_words', 'find_poetry', 'blank_filling', 'first_last_words']:
            if self.results[q_type]:
                report['by_type'][q_type] = self._calculate_metrics(self.results[q_type])
        
        # 按难度统计
        for difficulty in ['easy', 'medium', 'hard']:
            if self.results[difficulty]:
                report['by_difficulty'][difficulty] = self._calculate_metrics(self.results[difficulty])
        
        # 按朝代统计
        for dynasty in set(r['metadata']['dynasty'] for r in self.results['all'] if r['metadata']['dynasty']):
            report['by_dynasty'][dynasty] = self._calculate_metrics(self.results[dynasty])
        
        return report

    def _calculate_metrics(self, results: List[Dict]) -> Dict:
        """计算评测指标"""
        total = len(results)
        correct = sum(1 for r in results if r['is_correct'])
        return {
            'total': total,
            'correct': correct,
            'accuracy': correct / total if total > 0 else 0
        }

    def save_results(self, output_dir: str):
        """保存评测结果"""
        os.makedirs(output_dir, exist_ok=True)
        
        # 保存详细结果
        with open(os.path.join(output_dir, 'detailed_results.jsonl'), 'w', encoding='utf-8') as f:
            for result in self.results['all']:
                f.write(json.dumps(result, ensure_ascii=False) + '\n')
        
        # 保存原始输入输出
        with open(os.path.join(output_dir, 'raw_io.jsonl'), 'w', encoding='utf-8') as f:
            for result in self.results['all']:
                raw_io = {
                    'id': result['id'],
                    'type': result['type'],
                    'prompt': result['prompt'],
                    'completion': result['prediction'],
                    'ground_truth': result['ground_truth']
                }
                f.write(json.dumps(raw_io, ensure_ascii=False) + '\n')
        
        # 保存评测报告
        report = self.generate_report()
        with open(os.path.join(output_dir, 'evaluation_report.json'), 'w', encoding='utf-8') as f:
            json.dump(report, ensure_ascii=False, indent=2, fp=f)

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='评测大语言模型的古诗词能力')
    
    parser.add_argument('--api-key', 
                      type=str, 
                      required=True,
                      help='API密钥')
    
    parser.add_argument('--provider',
                      type=str,
                      choices=['openai', 'google'],
                      default='openai',
                      help='API提供商 (openai 或 google)')
    
    parser.add_argument('--model', 
                      type=str, 
                      help='要评测的模型名称')
    
    parser.add_argument('--api-base', 
                      type=str, 
                      help='API基础URL (例如: https://api.openai.com/v1)')
    
    parser.add_argument('--output-dir',
                      type=str,
                      default='evaluation_results',
                      help='评测结果保存目录 (默认: evaluation_results)')
    
    parser.add_argument('--benchmark-file',
                      type=str,
                      default='poetry_benchmark.jsonl',
                      help='评测数据集文件路径 (默认: poetry_benchmark.jsonl)')
    
    parser.add_argument('--dry-run',
                      action='store_true',
                      help='演示模式,不实际调用API')
    
    parser.add_argument('--delay',
                      type=float,
                      default=0.5,
                      help='API调用间隔时间(秒) (默认: 0.5)')
    
    parser.add_argument('--max-retries',
                      type=int,
                      default=5,
                      help='API调用最大重试次数 (默认: 5)')
    
    parser.add_argument('--retry-delay',
                      type=float,
                      default=10,
                      help='重试等待时间(秒) (默认: 10)')

    args = parser.parse_args()
    
    # 设置API基础URL (仅OpenAI需要)
    if not args.dry_run and args.provider == "openai":
        openai.api_base = args.api_base
    
    # 初始化评测器
    evaluator = PoetryEvaluator(
        api_key=args.api_key,
        provider=args.provider,
        model=args.model,
        dry_run=args.dry_run,
        delay=args.delay,
        max_retries=args.max_retries,
        retry_delay=args.retry_delay
    )
    
    # 加载数据
    questions = evaluator.load_benchmark(args.benchmark_file)
    
    # 运行评测
    evaluator.evaluate_all(questions)
    
    # 生成报告
    report = evaluator.generate_report()
    print(json.dumps(report, ensure_ascii=False, indent=2))
    
    # 保存结果
    evaluator.save_results(args.output_dir)