# coding=utf-8
import hashlib
import logging
import os
import sys
import uuid
from datetime import datetime

# Ensure sys path includes root for imports if not already
project_root = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
if project_root not in sys.path:
    sys.path.append(project_root)

from Apps.AiTeJiYiChong.ReadImageKit import ReadImageKit
from DbKit.Db import Db
from Config.Config import DB_URL
from Model.StationProfile import StationProfile
from Model.StationStatus import StationStatus
from Model.StationPriceSchedule import StationPriceSchedule

# 配置日志
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)

class AiTeJiYiChongService:
    def __init__(self):
        self.db = Db(db_url=DB_URL)
        self.station_profile_model = StationProfile()
        self.station_status_model = StationStatus()
        self.station_price_schedule_model = StationPriceSchedule()
        self.operator = "艾特吉易充"

    def generate_id(self):
        return str(uuid.uuid4())

    def get_hash(self, s: str) -> str:
        return hashlib.md5(s.encode('utf-8')).hexdigest()

    def _to_float(self, value) -> float:
        """
        从字符串中提取浮点数，过滤掉非数字字符
        """
        if value is None:
            return 0.0
        if isinstance(value, (int, float)):
            return float(value)
        
        import re
        try:
            # 提取第一个匹配的数字部分（包含小数点）
            match = re.search(r"[-+]?\d*\.?\d+", str(value))
            if match:
                return float(match.group())
            return 0.0
        except:
            return 0.0

    async def init_db(self):
        await self.db.init_db()

    async def close_db(self):
        await self.db.close()

    async def process_price_detail_data(self, station_name, hourly_schedule) -> bool:
        """
        直接保存已处理好的小时段价格数据
        """
        if not station_name or not hourly_schedule:
            return False

        station_hash = self.get_hash(station_name)
        now = datetime.now()

        async with await self.db.get_session() as session:
            schedule_id = self.generate_id()
            await self.station_price_schedule_model.save(
                session=session,
                id=schedule_id,
                station_hash=station_hash,
                schedule_json=hourly_schedule,
                valid_start_time=now
            )
            await session.commit()
        return True

    async def process_price_detail(self, image_path, station_name) -> list:
        """
        处理三级价格详情页截图
        """
        prices = await ReadImageKit.get_price_detail_from_image(image_path)
        if not prices:
            return None

        station_hash = self.get_hash(station_name)
        now = datetime.now()

        # 将识别到的原始分时价格扩展为 24 小时整点数据
        hourly_schedule = ReadImageKit.expand_schedule_to_24h(prices)

        async with await self.db.get_session() as session:
            schedule_id = self.generate_id()
            await self.station_price_schedule_model.save(
                session=session,
                id=schedule_id,
                station_hash=station_hash,
                schedule_json=hourly_schedule,
                valid_start_time=now
            )
            await session.commit()
        
        logger.info(f"三级页面价格详情处理完成: {station_name}, 共 {len(hourly_schedule)} 个小时段")
        return hourly_schedule

    async def process_station_detail(self, image_path, station_name=None) -> dict:
        """
        处理场站详情页截图
        """
        detail = await ReadImageKit.get_station_detail_from_image(image_path)
        if not detail:
            return None

        name = station_name or detail.get("station_name")
        if not name:
            return None

        station_hash = self.get_hash(name)
        now = datetime.now()

        async with await self.db.get_session() as session:
            # 1. 更新 Profile 中的地址信息
            profile_id = self.generate_id()
            await self.station_profile_model.save(
                session=session,
                id=profile_id,
                station_hash=station_hash,
                operator=self.operator,
                station_name=name,
                address=detail.get("address"),
                valid_start_time=now
            )

            await session.commit()
        
        logger.info(f"场站详情处理完成: {name}")
        return detail

    async def process_station_list_vl(self, image_path, json_metadata, device_info=None, max_count=None) -> list:
        """
        基于 VL 模式处理场站列表 (整页识别)
        """
        # 优先使用带绿框的 _vl.jpg 图片进行识别
        vl_img_path = image_path.replace(".jpg", "_vl.jpg")
        img_to_process = vl_img_path if os.path.exists(vl_img_path) else image_path

        station_list = await ReadImageKit.parse_vl_image(img_to_process, json_metadata, device_info=device_info)
        if not station_list:
            return []

        processed_stations = []
        async with await self.db.get_session() as session:
            for station in station_list:
                # 如果指定了最大数量且已达到，则停止保存
                if max_count is not None and len(processed_stations) >= max_count:
                    # 填充空位以保持索引对齐，但不保存到数据库
                    processed_stations.append(None)
                    continue

                name = station.get("station_name")
                if not name:
                    continue

                station_hash = self.get_hash(name)
                now = datetime.now()
                station["station_hash"] = station_hash
                
                # 1. 保存 Profile (使用 db_retry 装饰器的方法，如果 Db 类已更新)
                profile_id = self.generate_id()
                await self.station_profile_model.save(
                    session=session,
                    id=profile_id,
                    station_hash=station_hash,
                    operator=self.operator,
                    station_name=name,
                    valid_start_time=now
                )
                station["profile_id"] = profile_id
                station["valid_start_time"] = now.isoformat()

                # 2. 保存 Status (解析价格和电桩)
                status_id = self.generate_id()
                
                # 处理 piles 字段
                piles_data = station.get("piles")
                total, free = 0, 0
                standardized_piles = []
                if isinstance(piles_data, list):
                    for idx, p in enumerate(piles_data):
                        try:
                            t = int(p.get("total", 0))
                            f = int(p.get("free", 0))
                            total += t
                            free += f
                            standardized_piles.append({
                                "pile_no": f"G{idx+1}",
                                "type": p.get("type", "未知"),
                                "power": "",
                                "status_text": f"空闲{f}/总{t}",
                                "remark": "列表页VL"
                            })
                        except:
                            continue
                
                await self.station_status_model.save(
                    session=session,
                    id=status_id,
                    station_hash=station_hash,
                    total_piles=total,
                    free_piles=free,
                    piles_detail_json=standardized_piles if standardized_piles else None,
                    current_price=self._to_float(station.get("price")),
                    parking_info=station.get("parking", ""),
                    distance=station.get("distance", ""),
                    valid_start_time=now
                )
                station["status_id"] = status_id
                
                processed_stations.append(station)

            await session.commit()
            
        return processed_stations