# encoding:utf-8

import json
import os
from bridge.context import ContextType
from bridge.reply import Reply, ReplyType
import plugins
from plugins import *
from common.log import logger
from .WordsSearch import WordsSearch


@plugins.register(name="Banwords", desire_priority=100, hidden=True, desc="判断消息中是否有敏感词、决定是否回复。", version="1.0", author="lanvent")
class Banwords(Plugin):
    def __init__(self):
        super().__init__()
        try:
            curdir=os.path.dirname(__file__)
            config_path=os.path.join(curdir,"config.json")
            conf=None
            if not os.path.exists(config_path):
                conf={"action":"ignore"}
                with open(config_path,"w") as f:
                    json.dump(conf,f,indent=4)
            else:
                with open(config_path,"r") as f:
                    conf=json.load(f)
            self.searchr = WordsSearch()
            self.action = conf["action"]
            banwords_path = os.path.join(curdir,"banwords.txt")
            with open(banwords_path, 'r', encoding='utf-8') as f:
                words=[]
                for line in f:
                    word = line.strip()
                    if word:
                        words.append(word)
            self.searchr.SetKeywords(words)
            self.handlers[Event.ON_HANDLE_CONTEXT] = self.on_handle_context
            if conf.get("reply_filter",True):
                self.handlers[Event.ON_DECORATE_REPLY] = self.on_decorate_reply
                self.reply_action = conf.get("reply_action","ignore")
            logger.info("[Banwords] inited")
        except Exception as e:
            logger.warn("[Banwords] init failed, ignore or see https://github.com/zhayujie/chatgpt-on-wechat/tree/master/plugins/banwords .")
            raise e
        


    def on_handle_context(self, e_context: EventContext):

        if e_context['context'].type not in [ContextType.TEXT,ContextType.IMAGE_CREATE]:
            return
        
        content = e_context['context'].content
        logger.debug("[Banwords] on_handle_context. content: %s" % content)
        if self.action == "ignore":
            f = self.searchr.FindFirst(content)
            if f:
                logger.info("[Banwords] %s in message" % f["Keyword"])
                e_context.action = EventAction.BREAK_PASS
                return
        elif self.action == "replace":
            if self.searchr.ContainsAny(content):
                reply = Reply(ReplyType.INFO, "发言中包含敏感词，请重试: \n"+self.searchr.Replace(content))
                e_context['reply'] = reply
                e_context.action = EventAction.BREAK_PASS
                return
            
    def on_decorate_reply(self, e_context: EventContext):

        if e_context['reply'].type not in [ReplyType.TEXT]:
            return
        
        reply = e_context['reply']
        content = reply.content
        if self.reply_action == "ignore":
            f = self.searchr.FindFirst(content)
            if f:
                logger.info("[Banwords] %s in reply" % f["Keyword"])
                e_context['reply'] = None
                e_context.action = EventAction.BREAK_PASS
                return
        elif self.reply_action == "replace":
            if self.searchr.ContainsAny(content):
                reply = Reply(ReplyType.INFO, "已替换回复中的敏感词: \n"+self.searchr.Replace(content))
                e_context['reply'] = reply
                e_context.action = EventAction.CONTINUE
                return
    
    def get_help_text(self, **kwargs):
        return Banwords.desc