import os
import json
import requests
import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from flask import Flask, request, jsonify, send_from_directory
from openai import OpenAI
from duckduckgo_search import DDGS
from functions import FUNCTIONS_GROUP_1, FUNCTIONS_GROUP_2, get_function_descriptions

app = Flask(__name__)
API_KEY = os.getenv("OPENAI_API_KEY")
BASE_URL = os.getenv("OPENAI_BASE_URL")
emailkey = os.getenv("EMAIL_KEY")
client = OpenAI(api_key=API_KEY, base_url=BASE_URL)

def search_duckduckgo(keywords):
    search_term = " ".join(keywords)
    with DDGS() as ddgs:
        return list(ddgs.text(keywords=search_term, region="cn-zh", safesearch="on", max_results=5))

def search_papers(query):
    url = f"https://api.crossref.org/works?query={query}"
    response = requests.get(url)
    if response.status_code == 200:
        data = response.json()
        papers = data['message']['items']
        processed_papers = []
        for paper in papers:
            processed_paper = {
                "标题": paper.get('title', [''])[0],
                "作者": ", ".join([f"{author.get('given', '')} {author.get('family', '')}" for author in paper.get('author', [])]),
                "DOI": paper.get('DOI', ''),
                "ISBN": ", ".join(paper.get('ISBN', [])),
                "摘要": paper.get('abstract', '').replace('<p>', '').replace('</p>', '').replace('<italic>', '').replace('</italic>', '')
            }
            processed_papers.append(processed_paper)
        return processed_papers
    else:
        return []

def send_email(to, subject, content):
    try:
        with smtplib.SMTP('106.15.184.28', 8025) as smtp:
            smtp.login("jwt", emailkey)
            message = MIMEMultipart()
            message['From'] = "Me <aixiao@aixiao.xyz>"
            message['To'] = to
            message['Subject'] = subject
            message.attach(MIMEText(content, 'html'))
            smtp.sendmail("aixiao@aixiao.xyz", to, message.as_string())
        return True
    except Exception as e:
        print(f"发送邮件时出错: {str(e)}")
        return False

def get_openai_response(messages, model="gpt-4o-mini", functions=None, function_call=None):
    try:
        response = client.chat.completions.create(
            model=model,
            messages=messages,
            functions=functions,
            function_call=function_call
        )
        return response.choices[0].message
    except Exception as e:
        print(f"调用OpenAI API时出错: {str(e)}")
        return None

def process_function_call(function_name, function_args):
    if function_name == "search_duckduckgo":
        keywords = function_args.get('keywords', [])
        if not keywords:
            return "搜索关键词为空，无法执行搜索。"
        return search_duckduckgo(keywords)
    elif function_name == "search_papers":
        query = function_args.get('query', '')
        if not query:
            return "搜索查询为空，无法执行论文搜索。"
        return search_papers(query)
    elif function_name == "send_email":
        to = function_args.get('to', '')
        subject = function_args.get('subject', '')
        content = function_args.get('content', '')
        if not to or not subject or not content:
            return "邮件信息不完整，无法发送邮件。"
        success = send_email(to, subject, content)
        return {
            "success": success,
            "message": "邮件发送成功" if success else "邮件发送失败",
            "to": to,
            "subject": subject,
            "content": content,
            "is_email": True
        }
    else:
        return "未知的函数调用。"

@app.route('/')
def index():
    return send_from_directory('.', 'index.html')

@app.route('/chat', methods=['POST'])
def chat():
    data = request.json
    question = data['question']
    history = data.get('history', [])
    messages = history + [{"role": "user", "content": question}]
    
    status_log = []
    
    # 次级模型1: 处理搜索相关函数
    status_log.append("次级模型1：正在判断是否需要选调第一组函数")
    sub_model_1_response = get_openai_response(messages, model="gpt-4o-mini", functions=FUNCTIONS_GROUP_1, function_call="auto")
    
    # 次级模型2: 处理邮件发送相关函数
    status_log.append("次级模型2：正在判断是否需要选调第二组函数")
    sub_model_2_response = get_openai_response(messages, model="gpt-4o-mini", functions=FUNCTIONS_GROUP_2, function_call="auto")
    
    function_call_1 = sub_model_1_response.function_call if sub_model_1_response and sub_model_1_response.function_call else None
    function_call_2 = sub_model_2_response.function_call if sub_model_2_response and sub_model_2_response.function_call else None
    
    if not function_call_1:
        status_log.append("次级模型1：判断不需要选调第一组函数")
    if not function_call_2:
        status_log.append("次级模型2：判断不需要选调第二组函数")
    
    final_function_call = None
    response = None
    search_results = None
    email_sent = False
    
    if function_call_1 and function_call_2:
        # 裁决模型: 决定使用哪个函数调用
        status_log.append("裁决模型：正在决定使用哪个函数调用")
        arbitration_messages = messages + [
            {"role": "system", "content": "两个次级模型都建议使用函数。请决定使用哪个函数更合适。"},
            {"role": "assistant", "content": f"次级模型1建议使用函数：{function_call_1.name}"},
            {"role": "assistant", "content": f"次级模型2建议使用函数：{function_call_2.name}"}
        ]
        arbitration_response = get_openai_response(arbitration_messages, model="gpt-4o-mini")
        if "模型1" in arbitration_response.content or function_call_1.name in arbitration_response.content:
            final_function_call = function_call_1
            status_log.append(f"裁决模型：决定使用函数 {function_call_1.name}")
        else:
            final_function_call = function_call_2
            status_log.append(f"裁决模型：决定使用函数 {function_call_2.name}")
    elif function_call_1:
        final_function_call = function_call_1
        status_log.append(f"次级模型1：决定使用函数 {function_call_1.name}")
    elif function_call_2:
        final_function_call = function_call_2
        status_log.append(f"次级模型2：决定使用函数 {function_call_2.name}")
    else:
        status_log.append("所有次级模型：判断不需要进行任何函数调用")
    
    if final_function_call:
        function_name = final_function_call.name
        function_args = json.loads(final_function_call.arguments)
        status_log.append(f"正在执行函数 {function_name}")
        result = process_function_call(function_name, function_args)
        status_log.append(f"函数 {function_name} 执行完成")
        
        if isinstance(result, dict) and result.get("is_email", False):
            response = f"邮件{'已成功' if result['success'] else '未能成功'}发送到 {result['to']}。\n\n主题：{result['subject']}\n\n内容：\n{result['content']}"
            email_sent = result['success']
        elif isinstance(result, list):
            search_results = result
            messages.append({
                "role": "function",
                "name": function_name,
                "content": json.dumps(result, ensure_ascii=False)
            })
        else:
            messages.append({
                "role": "function",
                "name": function_name,
                "content": str(result)
            })
    
    # 只有在没有邮件发送结果时才调用主模型
    if not response:
        status_log.append("主模型：正在生成回答")
        final_response = get_openai_response(messages, model="gpt-4o-mini")
        response = final_response.content if final_response else "Error occurred"
        status_log.append("主模型：回答生成完成")
    
    return jsonify({
        "response": response,
        "status_log": status_log,
        "search_results": search_results,
        "search_used": bool(search_results),
        "email_sent": email_sent
    })
    
@app.route('/settings', methods=['POST'])
def update_settings():
    data = request.json
    max_history = data.get('max_history', 10)
    return jsonify({"status": "success", "max_history": max_history})

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=7860, debug=True)