import json
import re
import random
import time
from datetime import datetime
from http.client import RemoteDisconnected

import callback


def camel_to_snake(name: str) -> str:
    # 匹配大写字母，并在前面加上下划线，然后转换为小写
    return re.sub(r'(?<!^)(?=[A-Z])', '_', name).lower()


def convert_columns_to_snake_case(columns: str) -> str:
    # 拆分字符串为字段列表，去除空格
    fields = [field.strip() for field in columns.split(",")]
    # 转换每个字段为下划线格式
    snake_case_fields = [camel_to_snake(field) for field in fields]
    # 重新组合回逗号分隔的字符串
    return ", ".join(snake_case_fields)


def random_float():
    # 生成一个随机的浮点数并四舍五入到14位小数
    return round(random.random(), 14)


def data_time():
    # 输出当前时间，精确到毫秒
    return datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")[:-3]  # `[:-3]` 用于截取前3位保留到毫秒


def get_conn_result(conn, file_name=""):
    max_retries = 3
    for attempt in range(max_retries):
        try:
            result = conn.getresponse()
            return result
        except RemoteDisconnected:
            if attempt < max_retries - 1:
                print(f"RemoteDisconnected,{file_name} - {data_time()} 重试 {attempt + 1}/{max_retries}...")
                time.sleep(10)  # 等待 10 秒后重试
            else:
                print(f"{file_name} - {data_time()}请求失败，达到最大重试次数")
                raise


def get_page_result(http_url, this_page, this_size, payload, headers, conn, savetodb: callback, file_name=""):
    this_http_url = f"{http_url}?rand={random_float()}&page={this_page}&size={this_size}"
    print(f"请求url={this_http_url}")
    conn.request("POST",
                 this_http_url,
                 payload, headers)

    data = get_conn_result(conn, file_name).read()
    json_str = data.decode("utf-8")

    try:
        json_obj = json.loads(json_str)
        print("获取到总条数为:", json_obj.get("totalPages"))

        data_to_insert = json_obj.get("content")

        # if data_to_insert is not None:
        #     # 先睡一秒，确保峰值不会太高
        #     sleep(1)

        print(f"\n开始插入数据==>{this_page}*{this_size}\n")
        savetodb(data_to_insert)

        if json_obj.get("totalPages") > 1:

            try:
                for i in range(1, json_obj.get("totalPages")):
                    this_page = i
                    print(f"请求url={http_url}?rand={random_float()}&page={this_page}&size={this_size}")
                    conn.request("POST",
                                 f"{http_url}?rand={random_float()}&page={this_page}&size={this_size}",
                                 payload, headers)
                    data = get_conn_result(conn, file_name).read()
                    json_str = data.decode("utf-8")
                    print("JSON String", json_str)
                    json_obj_arr = json.loads(json_str)
                    print(f"获取到总页数为:{json_obj_arr.get("totalPages")}页")
                    data_to_insert = json_obj_arr.get("content")
                    # if data_to_insert is not None:
                    #     # 先睡一秒，确保峰值不会太高
                    #     time.sleep(1)
                    print(f"\n开始插入数据==>{i}页 * {this_size}\n")
                    savetodb(data_to_insert)
            except json.JSONDecodeError as e:
                print(f"循环 Error decoding JSON: {e}")

    except json.JSONDecodeError as e:
        print(f"请求 Error decoding JSON: {e}")


# 创建一个方法写入日志到根目录下runtime/log/,错误的是 error.log，正确的是 success.log
def write_log(log_type, log_content):
    with open(f"runtime/log/{log_type}.log", "a", encoding="utf-8") as f:
        f.write(log_content + "\n")
        f.close()