import os
import json
import base64
import requests
from typing import Dict, List, Any, Optional
from datetime import datetime
import re
from html import unescape

try:
    from bs4 import BeautifulSoup
except ImportError:
    BeautifulSoup = None

class TicketManager:
    def __init__(self, url: str, db: str, username: str, api_key: str):
        self.url = url
        self.db = db
        self.username = username
        self.api_key = api_key
        self.uid = None
        self.session_id = None
        self.model_name = "project.task"
        
    def login(self) -> bool:
        login_url = f"{self.url}/web/session/authenticate"
        login_data = {
            "jsonrpc": "2.0",
            "params": {
                "db": self.db,
                "login": self.username,
                "password": self.api_key
            }
        }
        response = requests.post(login_url, json=login_data)
        result = response.json()
        
        if result.get("error"):
            print(f"Erreur de connexion: {result['error']['message']}")
            return False
        
        self.uid = result.get("result", {}).get("uid")
        self.session_id = response.cookies.get("session_id")
        return True if self.uid else False

    def _rpc_call(self, endpoint: str, params: Dict[str, Any]) -> Dict[str, Any]:
        full_url = f"{self.url}{endpoint}"
        headers = {"Content-Type": "application/json"}
        data = {"jsonrpc": "2.0", "method": "call", "params": params}
        
        response = requests.post(full_url, json=data, headers=headers, cookies={"session_id": self.session_id})
        return response.json().get("result", {})
    
    def get_ticket(self, ticket_id: int) -> Dict[str, Any]:
        params = {
            "model": self.model_name,
            "method": "read",
            "args": [[ticket_id]],
            "kwargs": {"fields": ["id", "name", "description", "stage_id", "user_id", "create_date"]}
        }
        result = self._rpc_call("/web/dataset/call_kw", params)
        
        if isinstance(result, list) and len(result) > 0:
            return result[0]
        else:
            print(f"Aucun ticket trouvé avec l'ID {ticket_id} ou une erreur est survenue.")
            return {}
           
    def get_ticket_by_code(self, ticket_code: str) -> Dict[str, Any]:
        params = {
            "model": self.model_name,
            "method": "search_read",
            "args": [[["code", "=", ticket_code]], ["id", "name", "description", "stage_id", "user_id", "create_date"]],
            "kwargs": {"limit": 1}
        }
        result = self._rpc_call("/web/dataset/call_kw", params)
        
        if isinstance(result, list) and len(result) > 0:
            return result[0]
        else:
            print(f"Aucun ticket trouvé avec le code {ticket_code} ou une erreur est survenue.")
            return {}

    def get_ticket_attachments(self, ticket_id: int) -> List[Dict[str, Any]]:
        attachments = self._rpc_call("/web/dataset/call_kw", {
            "model": "ir.attachment",
            "method": "search_read",
            "args": [[["res_id", "=", ticket_id], ["res_model", "=", self.model_name]]],
            "kwargs": {"fields": ["id", "name", "datas", "mimetype"]}
        })
        return attachments if isinstance(attachments, list) else []
    
    def clean_html(self, html_content: str) -> str:
        if BeautifulSoup:
            soup = BeautifulSoup(html_content, "html.parser")
            for element in soup(['style', 'script', 'footer', 'header']):
                element.extract()
            text = soup.get_text(separator=' ', strip=True)
        else:
            text = re.sub(r'<.*?>', '', html_content)
        
        text = unescape(text)
        text = re.sub(r'\s+', ' ', text).strip()
        
        return text

    def save_json(self, data: Any, path: str):
        with open(path, "w", encoding="utf-8") as f:
            json.dump(data, f, indent=2, ensure_ascii=False)
    
    def extract_ticket_data(self, ticket_id: int, output_dir: str):
        os.makedirs(output_dir, exist_ok=True)
        
        ticket_data = self.get_ticket(ticket_id)
        if not ticket_data:
            print("Erreur: Ticket non trouvé.")
            return None

        ticket_info_path = os.path.join(output_dir, "ticket_info.json")
        self.save_json(ticket_data, ticket_info_path)
        
        attachments = self.get_ticket_attachments(ticket_id)
        attachment_list = []
        attachments_dir = os.path.join(output_dir, "attachments")
        os.makedirs(attachments_dir, exist_ok=True)
        
        for attachment in attachments:
            if "datas" in attachment and attachment["datas"]:
                file_name = f"{attachment['id']}_{attachment['name']}"
                file_path = os.path.join(attachments_dir, file_name)
                
                with open(file_path, "wb") as f:
                    f.write(base64.b64decode(attachment["datas"]))
                
                attachment_list.append({
                    "id": attachment["id"],
                    "name": attachment["name"],
                    "file_path": file_path,
                    "mimetype": attachment.get("mimetype")
                })
        
        attachments_info_path = os.path.join(output_dir, "attachments_info.json")
        self.save_json(attachment_list, attachments_info_path)
        
        structure = {
            "date_extraction": datetime.now().isoformat(),
            "ticket_dir": output_dir,
            "fichiers_json": [
                "ticket_info.json",
                "attachments_info.json"
            ]
        }
        structure_path = os.path.join(output_dir, "structure.json")
        self.save_json(structure, structure_path)

        return {
            "ticket_info": ticket_info_path,
            "attachments_info": attachments_info_path,
            "ticket_data_file": structure_path,
        }