from __future__ import annotations
from typing import TYPE_CHECKING, Any, Callable, Dict, List, Tuple, Type
import logging
import json
import os
import datetime
from datetime import timezone 
import hashlib
import csv
import requests
import re
import html
import sys
import subprocess

import gradio as gr
from pypinyin import lazy_pinyin
import tiktoken
from markdown import markdown
from pygments import highlight
from pygments.lexers import get_lexer_by_name
from pygments.formatters import HtmlFormatter
import pandas as pd

from modules.presets import *
from . import shared
from modules.config import retrieve_proxy, hide_history_when_not_logged_in

if TYPE_CHECKING:
    from typing import TypedDict

    class DataframeData(TypedDict):
        headers: List[str]
        data: List[List[str | int | bool]]

def predict(current_model, *args):
    iter = current_model.predict(*args)
    for i in iter:
        yield i

def billing_info(current_model):
    return current_model.billing_info()

def set_key(current_model, *args):
    return current_model.set_key(*args)

def load_chat_history(current_model, *args):
    return current_model.load_chat_history(*args)

def delete_chat_history(current_model, *args):
    return current_model.delete_chat_history(*args)

def interrupt(current_model, *args):
    return current_model.interrupt(*args)

def reset(current_model, *args):
    return current_model.reset(*args)

def retry(current_model, *args):
    iter = current_model.retry(*args)
    for i in iter:
        yield i

def delete_first_conversation(current_model, *args):
    return current_model.delete_first_conversation(*args)

def delete_last_conversation(current_model, *args):
    return current_model.delete_last_conversation(*args)

def set_system_prompt(current_model, *args):
    return current_model.set_system_prompt(*args)

def save_chat_history(current_model, *args):
    return current_model.save_chat_history(*args)

def export_markdown(current_model, *args):
    return current_model.export_markdown(*args)

def load_chat_history(current_model, *args):
    return current_model.load_chat_history(*args)

def upload_chat_history(current_model, *args):
    return current_model.load_chat_history(*args)

def set_token_upper_limit(current_model, *args):
    return current_model.set_token_upper_limit(*args)

def set_temperature(current_model, *args):
    current_model.set_temperature(*args)

def set_top_p(current_model, *args):
    current_model.set_top_p(*args)

def set_n_choices(current_model, *args):
    current_model.set_n_choices(*args)

def set_stop_sequence(current_model, *args):
    current_model.set_stop_sequence(*args)

def set_max_tokens(current_model, *args):
    current_model.set_max_tokens(*args)

def set_presence_penalty(current_model, *args):
    current_model.set_presence_penalty(*args)

def set_frequency_penalty(current_model, *args):
    current_model.set_frequency_penalty(*args)

def set_logit_bias(current_model, *args):
    current_model.set_logit_bias(*args)

def set_user_identifier(current_model, *args):
    current_model.set_user_identifier(*args)

def set_single_turn(current_model, *args):
    current_model.set_single_turn(*args)

def handle_file_upload(current_model, *args):
    return current_model.handle_file_upload(*args)

def handle_summarize_index(current_model, *args):
    return current_model.summarize_index(*args)

def like(current_model, *args):
    return current_model.like(*args)

def dislike(current_model, *args):
    return current_model.dislike(*args)


def count_token(message):
    encoding = tiktoken.get_encoding("cl100k_base")
    input_str = f"role: {message['role']}, content: {message['content']}"
    length = len(encoding.encode(input_str))
    return length


def markdown_to_html_with_syntax_highlight(md_str): # deprecated
    def replacer(match):
        lang = match.group(1) or "text"
        code = match.group(2)

        try:
            lexer = get_lexer_by_name(lang, stripall=True)
        except ValueError:
            lexer = get_lexer_by_name("text", stripall=True)

        formatter = HtmlFormatter()
        highlighted_code = highlight(code, lexer, formatter)

        return f'<pre><code class="{lang}">{highlighted_code}</code></pre>'

    code_block_pattern = r"```(\w+)?\n([\s\S]+?)\n```"
    md_str = re.sub(code_block_pattern, replacer, md_str, flags=re.MULTILINE)

    html_str = markdown(md_str)
    return html_str


def normalize_markdown(md_text: str) -> str: # deprecated
    lines = md_text.split("\n")
    normalized_lines = []
    inside_list = False

    for i, line in enumerate(lines):
        if re.match(r"^(\d+\.|-|\*|\+)\s", line.strip()):
            if not inside_list and i > 0 and lines[i - 1].strip() != "":
                normalized_lines.append("")
            inside_list = True
            normalized_lines.append(line)
        elif inside_list and line.strip() == "":
            if i < len(lines) - 1 and not re.match(
                r"^(\d+\.|-|\*|\+)\s", lines[i + 1].strip()
            ):
                normalized_lines.append(line)
            continue
        else:
            inside_list = False
            normalized_lines.append(line)

    return "\n".join(normalized_lines)


def convert_mdtext(md_text): # deprecated
    code_block_pattern = re.compile(r"```(.*?)(?:```|$)", re.DOTALL)
    inline_code_pattern = re.compile(r"`(.*?)`", re.DOTALL)
    code_blocks = code_block_pattern.findall(md_text)
    non_code_parts = code_block_pattern.split(md_text)[::2]

    result = []
    raw = f'<div class="raw-message hideM">{html.escape(md_text)}</div>'
    for non_code, code in zip(non_code_parts, code_blocks + [""]):
        if non_code.strip():
            non_code = normalize_markdown(non_code)
            result.append(markdown(non_code, extensions=["tables"]))
        if code.strip():
            # _, code = detect_language(code)  # 暂时去除代码高亮功能，因为在大段代码的情况下会出现问题
            # code = code.replace("\n\n", "\n") # 暂时去除代码中的空行，因为在大段代码的情况下会出现问题
            code = f"\n```{code}\n\n```"
            code = markdown_to_html_with_syntax_highlight(code)
            result.append(code)
    result = "".join(result)
    output = f'<div class="md-message">{result}</div>'
    output += raw
    output += ALREADY_CONVERTED_MARK
    return output

def convert_bot_before_marked(chat_message):
    """
    注意不能给输出加缩进, 否则会被marked解析成代码块
    """
    if '<div class="md-message">' in chat_message:
        return chat_message
    else:
        code_block_pattern = re.compile(r"```(.*?)(?:```|$)", re.DOTALL)
        code_blocks = code_block_pattern.findall(chat_message)
        non_code_parts = code_block_pattern.split(chat_message)[::2]
        result = []

        hr_pattern = r'\n\n<hr class="append-display no-in-raw" />(.*?)'
        hr_match = re.search(hr_pattern, chat_message, re.DOTALL)
        clip_hr = chat_message[:hr_match.start()] if hr_match else chat_message
        raw = f'<div class="raw-message hideM">{escape_markdown(clip_hr)}</div>'
        for non_code, code in zip(non_code_parts, code_blocks + [""]):
            if non_code.strip():
                result.append(non_code)
            if code.strip():
                code = f"\n```{code}\n```"
                result.append(code)
        result = "".join(result)
        md = f'<div class="md-message">{result}\n</div>'
        return raw + md

def convert_user_before_marked(chat_message):
    if '<div class="user-message">' in chat_message:
        return chat_message
    else:
        return f'<div class="user-message">{escape_markdown(chat_message)}</div>'

def escape_markdown(text):
    """
    Escape Markdown special characters to HTML-safe equivalents.
    """
    escape_chars = {
        ' ': '&nbsp;',
        '_': '&#95;',
        '*': '&#42;',
        '[': '&#91;',
        ']': '&#93;',
        '(': '&#40;',
        ')': '&#41;',
        '{': '&#123;',
        '}': '&#125;',
        '#': '&#35;',
        '+': '&#43;',
        '-': '&#45;',
        '.': '&#46;',
        '!': '&#33;',
        '`': '&#96;',
        '>': '&#62;',
        '<': '&#60;',
        '|': '&#124;',
        '$': '&#36;',
        ':': '&#58;',
    }
    return ''.join(escape_chars.get(c, c) for c in text)


def convert_asis(userinput): # deprecated
    return (
        f'<p style="white-space:pre-wrap;">{html.escape(userinput)}</p>'
        + ALREADY_CONVERTED_MARK
    )


def detect_converted_mark(userinput): # deprecated
    try:
        if userinput.endswith(ALREADY_CONVERTED_MARK):
            return True
        else:
            return False
    except:
        return True


def detect_language(code): # deprecated
    if code.startswith("\n"):
        first_line = ""
    else:
        first_line = code.strip().split("\n", 1)[0]
    language = first_line.lower() if first_line else ""
    code_without_language = code[len(first_line) :].lstrip() if first_line else code
    return language, code_without_language


def construct_text(role, text):
    return {"role": role, "content": text}


def construct_user(text):
    return construct_text("user", text)


def construct_system(text):
    return construct_text("system", text)


def construct_assistant(text):
    return construct_text("assistant", text)

def save_file(filename, system, history, chatbot, user_name):
    logging.debug(f"{user_name} Сохранение истории диалога...")
    os.makedirs(os.path.join(HISTORY_DIR, user_name), exist_ok=True)
    if filename.endswith(".json"):
        json_s = {"system": system, "history": history, "chatbot": chatbot}
        if "/" in filename or "\\" in filename:
            history_file_path = filename
        else:
            history_file_path = os.path.join(HISTORY_DIR, user_name, filename)
        with open(history_file_path, "w", encoding='utf-8') as f:
            json.dump(json_s, f, ensure_ascii=False)
    elif filename.endswith(".md"):
        md_s = f"system: \n- {system} \n"
        for data in history:
            md_s += f"\n{data['role']}: \n- {data['content']} \n"
        with open(os.path.join(HISTORY_DIR, user_name, filename), "w", encoding="utf8") as f:
            f.write(md_s)
    logging.debug(f"{user_name} История диалога сохранена")
    return os.path.join(HISTORY_DIR, user_name, filename)


def sorted_by_pinyin(list):
    return sorted(list, key=lambda char: lazy_pinyin(char)[0][0])


def get_file_names(dir, plain=False, filetypes=[".json"]):
    logging.debug(f"Получение списка имен файлов, директория: {dir}, типы файлов: {filetypes}, простой список: {plain}")
    files = []
    try:
        for type in filetypes:
            files += [f for f in os.listdir(dir) if f.endswith(type)]
    except FileNotFoundError:
        files = []
    files = sorted_by_pinyin(files)
    if files == []:
        files = [""]
    logging.debug(f"Файлы: {files}")
    if plain:
        return files
    else:
        return gr.Dropdown.update(choices=files)


def get_history_names(plain=False, user_name=""):
    logging.debug(f"Получение списка имен файлов истории из пользователя {user_name}")
    if user_name == "" and hide_history_when_not_logged_in:
        return ""
    else:
        return get_file_names(os.path.join(HISTORY_DIR, user_name), plain)


def load_template(filename, mode=0):
    logging.debug(f"Загрузка шаблонного файла {filename}, режим: {mode} (0 - возвращение словаря и выпадающего списка, 1 - возвращение выпадающего списка, 2 - возвращение словаря)")
    lines = []
    if filename.endswith(".json"):
        with open(os.path.join(TEMPLATES_DIR, filename), "r", encoding="utf8") as f:
            lines = json.load(f)
        lines = [[i["act"], i["prompt"]] for i in lines]
    else:
        with open(
            os.path.join(TEMPLATES_DIR, filename), "r", encoding="utf8"
        ) as csvfile:
            reader = csv.reader(csvfile)
            lines = list(reader)
        lines = lines[1:]
    if mode == 1:
        return sorted_by_pinyin([row[0] for row in lines])
    elif mode == 2:
        return {row[0]: row[1] for row in lines}
    else:
        choices = sorted_by_pinyin([row[0] for row in lines])
        return {row[0]: row[1] for row in lines}, gr.Dropdown.update(
            choices=choices
        )


def get_template_names(plain=False):
    logging.debug("Получение списка имен файлов шаблонов")
    return get_file_names(TEMPLATES_DIR, plain, filetypes=[".csv", "json"])


def get_template_content(templates, selection, original_system_prompt):
    logging.debug(f"Применение шаблона, выбор: {selection}, оригинальный системный запрос: {original_system_prompt}")
    try:
        return templates[selection]
    except:
        return original_system_prompt


def reset_textbox():
    logging.debug("Сброс текстового поля")
    return gr.update(value="")


def reset_default():
    default_host = shared.state.reset_api_host()
    retrieve_proxy("")
    return gr.update(value=default_host), gr.update(value=""), "API-Host и прокси сброшены"


def change_api_host(host):
    shared.state.set_api_host(host)
    msg = f"API-Host изменен на {host}"
    logging.info(msg)
    return msg


def change_proxy(proxy):
    retrieve_proxy(proxy)
    os.environ["HTTPS_PROXY"] = proxy
    msg = f"Прокси изменен на {proxy}"
    logging.info(msg)
    return msg


def hide_middle_chars(s):
    if s is None:
        return ""
    if len(s) <= 8:
        return s
    else:
        head = s[:4]
        tail = s[-4:]
        hidden = "*" * (len(s) - 8)
        return head + hidden + tail


def submit_key(key):
    key = key.strip()
    msg = f"API-ключ изменен на {hide_middle_chars(key)}"
    logging.info(msg)
    return key, msg


def replace_today(prompt):
    today = datetime.datetime.today().strftime("%Y-%m-%d")
    return prompt.replace("{current_date}", today)


def get_geoip():
    try:
        with retrieve_proxy():
            response = requests.get("https://ipapi.co/json/", timeout=5)
        data = response.json()
    except:
        data = {"error": True, "reason": "Не удалось подключиться к ipapi"}
    if "error" in data.keys():
        logging.warning(f"Не удалось получить информацию об IP-адресе.\n{data}")
        if data["reason"] == "RateLimited":
            return (
                "Ваша IP-зона: неизвестна."
            )
        else:
            return "Не удалось получить географическое положение IP-адреса. Причина: " + f"{data['reason']}" + ". Вы все равно можете использовать функцию чата."
    else:
        country = data["country_name"]
        if country == "China":
            text = "**Ваша IP-зона: Китай. Пожалуйста, проверьте настройки прокси, использование API в неподдерживаемых регионах может привести к блокировке учетной записи.**"
        else:
            text = "Ваша IP-зона: " + f"{country}."
        logging.info(text)
        return text


def find_n(lst, max_num):
    n = len(lst)
    total = sum(lst)

    if total < max_num:
        return n

    for i in range(len(lst)):
        if total - lst[i] < max_num:
            return n - i - 1
        total = total - lst[i]
    return 1


def start_outputing():
    logging.debug("Показать кнопку отмены, скрыть кнопку отправки")
    return gr.Button.update(visible=False), gr.Button.update(visible=True)


def end_outputing():
    return (
        gr.Button.update(visible=True),
        gr.Button.update(visible=False),
    )


def cancel_outputing():
    logging.info("Прерывание вывода...")
    shared.state.interrupt()


def transfer_input(inputs):
    # Возвращаем все сразу, чтобы снизить задержку
    textbox = reset_textbox()
    outputing = start_outputing()
    return (
        inputs,
        gr.update(value=""),
        gr.Button.update(visible=False),
        gr.Button.update(visible=True),
    )


def run(command, desc=None, errdesc=None, custom_env=None, live=False):
    if desc is not None:
        print(desc)
    if live:
        result = subprocess.run(command, shell=True, env=os.environ if custom_env is None else custom_env)
        if result.returncode != 0:
            raise RuntimeError(f"""{errdesc or 'Ошибка при выполнении команды'}.
                Команда: {command}
                Код ошибки: {result.returncode}""")

        return ""
    result = subprocess.run(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True, env=os.environ if custom_env is None else custom_env)
    if result.returncode != 0:
        message = f"""{errdesc or 'Ошибка при выполнении команды'}.
            Команда: {command}
            Код ошибки: {result.returncode}
            stdout: {result.stdout.decode(encoding="utf8", errors="ignore") if len(result.stdout)>0 else '<пусто>'}
            stderr: {result.stderr.decode(encoding="utf8", errors="ignore") if len(result.stderr)>0 else '<пусто>'}
            """
        raise RuntimeError(message)
    return result.stdout.decode(encoding="utf8", errors="ignore")


def commit_html():
    git = os.environ.get('GIT', "git")
    try:
        commit_hash = run(f"{git} rev-parse HEAD").strip()
    except Exception:
        commit_hash = "<неизвестно>"
    if commit_hash != "<неизвестно>":
        short_commit = commit_hash[0:7]
        commit_info = f'<a style="text-decoration:none;color:inherit" href="https://github.com/GaiZhenbiao/ChuanhuChatGPT/commit/{short_commit}">{short_commit}</a>'
    else:
        commit_info = "неизвестно \U0001F615"
    return commit_info

def tag_html():
    git = os.environ.get('GIT', "git")
    try:
        tag = run(f"{git} describe --tags --exact-match").strip()
    except Exception:
        tag = "<none>"
    if tag != "<none>":
        tag_info = f'<a style="text-decoration:none;color:inherit" href="https://github.com/GaiZhenbiao/ChuanhuChatGPT/releases/tag/{tag}">{tag}</a>'
    else:
        tag_info = "unknown \U0001F615"
    return tag_info

def repo_html():
    commit_version = commit_html()
    tag_version = tag_html()
    return tag_version if tag_version != "unknown \U0001F615" else commit_version

def versions_html():
    python_version = ".".join([str(x) for x in sys.version_info[0:3]])
    repo_version = repo_html()
    return f"""
        Python: <span title="{sys.version}">{python_version}</span>
         • 
        Gradio: {gr.__version__}
         • 
        <a style="text-decoration:none;color:inherit" href="https://github.com/GaiZhenbiao/ChuanhuChatGPT">ChuanhuChat</a>: {repo_version}
        """

def version_time():
    git = os.environ.get('GIT', "git")
    try:
        commit_time = run(f"TZ=UTC {git} log -1 --format=%cd --date='format-local:%Y-%m-%dT%H:%M:%SZ'").strip()
    except Exception:
        commit_time = "unknown"
    return commit_time

def get_html(filename):
    path = os.path.join(shared.chuanhu_path, "assets", "html", filename)
    if os.path.exists(path):
        with open(path, encoding="utf8") as file:
            return file.read()
    return ""

def add_source_numbers(lst, source_name = "Source", use_source = True):
    if use_source:
        return [f'[{idx+1}]\t "{item[0]}"\n{source_name}: {item[1]}' for idx, item in enumerate(lst)]
    else:
        return [f'[{idx+1}]\t "{item}"' for idx, item in enumerate(lst)]

def add_details(lst):
    nodes = []
    for index, txt in enumerate(lst):
        brief = txt[:25].replace("\n", "")
        nodes.append(
            f"<details><summary>{brief}...</summary><p>{txt}</p></details>"
        )
    return nodes


def sheet_to_string(sheet, sheet_name = None):
    result = []
    for index, row in sheet.iterrows():
        row_string = ""
        for column in sheet.columns:
            row_string += f"{column}: {row[column]}, "
        row_string = row_string.rstrip(", ")
        row_string += "."
        result.append(row_string)
    return result

def excel_to_string(file_path):
    # 读取Excel文件中的所有工作表
    excel_file = pd.read_excel(file_path, engine='openpyxl', sheet_name=None)

    # 初始化结果字符串
    result = []

    # 遍历每一个工作表
    for sheet_name, sheet_data in excel_file.items():

        # 处理当前工作表并添加到结果字符串
        result += sheet_to_string(sheet_data, sheet_name=sheet_name)


    return result

def get_last_day_of_month(any_day):
    # The day 28 exists in every month. 4 days later, it's always next month
    next_month = any_day.replace(day=28) + datetime.timedelta(days=4)
    # subtracting the number of the current day brings us back one month
    return next_month - datetime.timedelta(days=next_month.day)

def get_model_source(model_name, alternative_source):
    if model_name == "gpt2-medium":
        return "https://huggingface.co/gpt2-medium"

def refresh_ui_elements_on_load(current_model, selected_model_name, user_name):
    current_model.set_user_identifier(user_name)
    return toggle_like_btn_visibility(selected_model_name), *current_model.auto_load()

def toggle_like_btn_visibility(selected_model_name):
    if selected_model_name == "xmchat":
        return gr.update(visible=True)
    else:
        return gr.update(visible=False)

def new_auto_history_filename(dirname):
    latest_file = get_latest_filepath(dirname)
    if latest_file:
        with open(os.path.join(dirname, latest_file), 'r', encoding="utf-8") as f:
            if len(f.read()) == 0:
                return latest_file
    now = datetime.datetime.now().strftime('%Y-%m-%d_%H-%M-%S')
    return f'{now}.json'

def get_latest_filepath(dirname):
    pattern = re.compile(r'\d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2}')
    latest_time = None
    latest_file = None
    for filename in os.listdir(dirname):
        if os.path.isfile(os.path.join(dirname, filename)):
            match = pattern.search(filename)
            if match and match.group(0) == filename[:19]:
                time_str = filename[:19]
                filetime = datetime.datetime.strptime(time_str, '%Y-%m-%d_%H-%M-%S')
                if not latest_time or filetime > latest_time:
                    latest_time = filetime
                    latest_file = filename
    return latest_file

def get_history_filepath(username):
    dirname = os.path.join(HISTORY_DIR, username)
    os.makedirs(dirname, exist_ok=True)
    latest_file = get_latest_filepath(dirname)
    if not latest_file:
        latest_file = new_auto_history_filename(dirname)

    latest_file = os.path.join(dirname, latest_file)
    return latest_file