import time
import json
import random
import re
import os
import uuid
import shutil
import base64
import socket
import easyocr
from datetime import datetime
from typing import List, Dict, Optional, Any, Callable
from urllib.parse import urljoin, urlparse, urlencode

# DrissionPage 核心
from DrissionPage import ChromiumPage, ChromiumOptions


from vs_plg import IVSPlg
from vs_types import VSPlgConfig, AppointmentType, VSQueryResult, VSBookResult, AvailabilityStatus, TimeSlot, DateAvailability, NotFoundError, PermissionDeniedError, RateLimiteddError, SessionExpiredOrInvalidError, BizLogicError 
from toolkit.vs_cloud_api import VSCloudApi
from toolkit.proxy_tunnel import ProxyTunnel
from utils.fingerprint_utils import FingerprintGenerator

class BrowserResponse:
    def __init__(self, result_dict):
        result_dict = result_dict or {}
        self.status_code = result_dict.get('status', 0)
        self.text = result_dict.get('body', '')
        self.headers = result_dict.get('headers', {})
        self.url = result_dict.get('url', '')
        self._json = None
    def json(self):
        if self._json is None:
            if not self.text: return {}
            try: self._json = json.loads(self.text)
            except: self._json = {}
        return self._json

def to_yyyymmdd(data_str: str, date_str_format: str, target_format: str="%Y-%m-%d"):
    dt = datetime.strptime(data_str, date_str_format)
    return dt.strftime("%Y-%m-%d")

def get_alias_email(email: str, new_domain: str = "gmail-app.com") -> str:
    if "@" not in email: raise ValueError(f"Invalid email: {email}")
    local_part, _ = email.rsplit("@", 1)
    return f"{local_part}@{new_domain}"

class PolPlugin(IVSPlg):
    """
    Poland (e-konsulat) 签证预约插件 (Browser + Tunnel Mode)
    """

    def __init__(self, group_id: str):
        self.group_id = group_id
        self.config: Optional[VSPlgConfig] = None
        self.free_config: Dict[str, Any] = {}
        self.logger = None
        
        # 浏览器实例
        self.page: Optional[ChromiumPage] = None
        
        # 资源隔离
        self.instance_id = uuid.uuid4().hex[:8]
        self.root_workspace = os.path.abspath(os.path.join("data/temp_browser_data", f"{self.group_id}.{self.instance_id}"))
        self.user_data_path = os.path.join(self.root_workspace, "user_data")
        
        if not os.path.exists(self.root_workspace):
            os.makedirs(self.root_workspace)
            
        self.reader = easyocr.Reader(['en'], gpu=False)
        
        self.tunnel = None # 代理隧道
        self.is_healthy = True
        self.session_create_time: float = 0

    def get_group_id(self) -> str:
        return self.group_id
    
    def set_log(self, logger: Callable[[str], None]) -> None:
        self.logger = logger
        
    def _log(self, message): 
        if self.logger:
            self.logger(f'[PolPlugin] [{self.group_id}] {message}')
        else:
            print(f'[PolPlugin] [{self.group_id}] {message}')
        
    def set_config(self, config: VSPlgConfig):
        self.config = config
        self.free_config = config.free_config or {}
            
    def keep_alive(self):
        pass

    def health_check(self) -> bool:
        if not self.is_healthy:
            return False
        if not self.page:
            return False
        try:
            if not self.page.run_js("return 1;"):
                return False
        except:
            return False
        if self.config.session_max_life > 0:
            if time.time() - self.session_create_time > self.config.session_max_life:
                self._log("Session expired.")
                return False
        return True

    def create_session(self):
        """
        创建会话：启动浏览器 -> 代理隧道 -> 提取 Captcha -> 本地识别 -> 提交 -> 获取 Context
        """
        self._log(f"Initializing Session (ID: {self.instance_id})...")
        co = ChromiumOptions()
        def get_free_port():
            with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
                s.bind(('', 0)); return s.getsockname()[1]
        co.set_local_port(get_free_port())
        
        co.set_user_data_path(self.user_data_path)
        chrome_path = os.getenv("CHROME_BIN")
        if chrome_path and os.path.exists(chrome_path):
            co.set_paths(browser_path=chrome_path)
            
        if self.config.proxy and self.config.proxy.ip:
            p = self.config.proxy
            if p.username and p.password:
                self._log(f"Starting Tunnel for {p.ip}...")
                self.tunnel = ProxyTunnel(p.ip, p.port, p.username, p.password)
                local_proxy = self.tunnel.start()
                self._log(f"Tunnel started at {local_proxy}")
                co.set_argument(f'--proxy-server={local_proxy}')
            else:
                proxy_str = f"{p.scheme}://{p.ip}:{p.port}"
                co.set_argument(f'--proxy-server={proxy_str}')
        else:
            self._log("[WARN] No proxy configured!")

        fingerprint_gen = FingerprintGenerator()
        specific_fp = fingerprint_gen.generate(self.config.account.username)
        self._log(f'browser fingerprint={specific_fp}')
        
        co.headless(False)
        co.set_argument('--no-sandbox')
        # co.set_argument('--disable-gpu')
        co.set_argument('--disable-dev-shm-usage') 
        co.set_argument('--window-size=1920,1080')
        co.set_argument('--disable-blink-features=AutomationControlled')
        co.set_argument('--ignore-certificate-errors')
        co.set_argument('--ignore-gpu-blocklist') # 忽略无显卡黑名单
        co.set_argument('--enable-webgl')         # 强制开启 WebGL
        co.set_argument('--use-gl=angle')         # 使用 ANGLE 渲染后端
        co.set_argument('--use-angle=swiftshader')# 强制使用 CPU 进行 3D 渲染 (这步最关键！)
        co.set_argument(f"--fingerprint={specific_fp.get('seed')}")
        co.set_argument(f"--fingerprint-platform={specific_fp.get('platform')}")
        co.set_argument(f"--fingerprint-brand={specific_fp.get('brand')}")
        try:
            self.page = ChromiumPage(co)
            url_home = "https://secure.e-konsulat.gov.pl"
            self._log(f"Navigating to {url_home}")
            self.page.get(url_home)
            self.page.wait.doc_loaded()
            self.session_create_time = time.time()
            self._log("Session created successfully.")
        except Exception as e:
            self._log(f"Session Create Failed: {e}")
            self.cleanup()
            raise e

    def query(self, apt_type: AppointmentType) -> VSQueryResult:
        res = VSQueryResult()
        res.success = False
        query_url = self.free_config.get('query_url')
        service_type = self.free_config.get('service_type')
        location = self.free_config.get('location')
        self._log(f"Navigating to {query_url}")
        self.page.get(query_url)
        captcha_image_selector = 't:img@alt=Weryfikacja obrazkowa'
        if not self.page.wait.ele_displayed(captcha_image_selector, timeout=30):
            raise BizLogicError(message=f"Wait for selector={captcha_image_selector} timeout")
        time.sleep(3)
        img_ele = self.page.ele(captcha_image_selector)
        img_src = img_ele.attr('src')
        base64_data = img_src.split(',')[1]            
        image_bytes = base64.b64decode(base64_data)

        result = self.reader.readtext(image_bytes)
        captcha_code = result[0][-2] if result else ""
        self._log(f"Captcha code={captcha_code}")

        if not captcha_code:
            BizLogicError(message="Solve captcha failed")
        input_ele = self.page.ele('t:input@aria-label=Znaki z obrazka')
        input_ele.clear()
        input_ele.input(captcha_code)

        btn_selector = 'Dalej'
        self.page.ele(btn_selector).click(by_js=True)
   
        toast_ele = self.page.ele('tag:app-toast', timeout=2)
        if toast_ele:
            error_msg = toast_ele.text.replace('\n', ' ').strip()
            raise BizLogicError(message=f"Captcha verify error={error_msg}")

        if not self._select_mat_option('Rodzaj usługi', service_type):
            raise BizLogicError(message=f'Process select box failed')
        if not self._select_mat_option('Lokalizacja', location):
            raise BizLogicError(message=f'Process select box failed')
        if not self._select_mat_option('Chcę zarezerwować termin dla', '1 osob'):
            raise BizLogicError(message=f'Process select box failed')
        
        available_dates = []
        self._log("Wait Query Slot...")
        for _ in range(20):
            try:
                no_slot_alert = self.page.ele('text:Chwilowo wszystkie udostępnione terminy', timeout=0.1)
                if no_slot_alert:
                    self._log("No slots available")
                    break                    
                listbox = self.page.ele('@role=listbox', timeout=0.1)                
                if not listbox:
                    termin_label = self.page.ele('tag:mat-label@@text():Termin', timeout=0.5)
                    if termin_label:
                        termin_select = termin_label.parent('tag:app-select-control').ele('tag:mat-select')                        
                        if termin_select and 'mat-select-disabled' not in str(termin_select.attr('class')):
                            try:
                                termin_select.click()
                            except:
                                termin_select.click(by_js=True)
                            
                            time.sleep(0.5)
                            listbox = self.page.ele('@role=listbox', timeout=1)
                if listbox:
                    option_elements = listbox.eles('.mat-option-text')
                    for ele in option_elements:
                        date_str = ele.text.strip()
                        if date_str:
                            available_dates.append(date_str)                           
                if available_dates:
                    self._log(f"✅ Success extracted dates: {available_dates}")
                    break                    
            except Exception as e:
                self._log(f"Query loop exception: {e}")                
            time.sleep(0.5)
        if available_dates:
            selected_date = random.choice(available_dates)
            self._log(f"🎲 Random select date: {selected_date}...")
            locked = self._lock_slot(selected_date)
            if locked:
                session_id = self._save_browser_session()
                wechat_message = f"🎉 [Poland] Slot locked\n📍 location: {location}\n📅 date: {selected_date}\n🔑 SessionId: {session_id}"
                VSCloudApi.Instance().push_weixin_text(wechat_message)
            res.success = True
            res.availability_status = AvailabilityStatus.Available
            earliest_date = available_dates[0]
            earliest_dt = datetime.strptime(earliest_date, "%Y-%m-%d")
            res.earliest_date = earliest_dt

            res.availability = [
                DateAvailability(
                    date=datetime.strptime(d, "%Y-%m-%d"),
                    times=[],
                )
                for d in available_dates
            ]
        else:
            res.success = False
            res.availability_status = AvailabilityStatus.NoneAvailable
            res.availability = []
        return res
    
    def _lock_slot(self, lock_date):
        slot_selector = f'xpath://span[contains(@class, "mat-option-text") and contains(text(), "{lock_date}")]'
        slot_ele = self.page.ele(slot_selector, timeout=1)
        if not slot_ele:
            termin_label = self.page.ele('tag:mat-label@@text():Termin', timeout=1)
            if termin_label:
                termin_select = termin_label.parent('tag:app-select-control').ele('tag:mat-select')
                if termin_select and 'mat-select-disabled' not in str(termin_select.attr('class')):
                    try:
                        termin_select.click()
                    except:
                        termin_select.click(by_js=True)
                    time.sleep(0.5)
        slot_ele = self.page.ele(slot_selector, timeout=3)
        if not slot_ele:
            self._log(f"❌ Can't find date {lock_date} to click.")
            return False
        try:
            slot_ele.click() 
        except:
            slot_ele.click(by_js=True)
        self._log(f"✅ Clicked date: {lock_date}")
        time.sleep(1)
        btn_selector = 'xpath://button[.//span[contains(text(), "Dalej")]]'
        next_btn = self.page.ele(btn_selector, timeout=3)
        if not next_btn:
            self._log("❌ Can't find 'Dalej' button")
            return False
        try:
            next_btn.click()
        except:
            next_btn.click(by_js=True)
        self._log("✅ Clicked Dalej, locking slot...")
        return self.page.wait.url_change('weryfikacja-obrazkowa', exclude=True, timeout=15)
    
    def _select_mat_option(self, label_text, option_text):
        self._log(f"choose: {label_text} -> {option_text}")
        label = self.page.ele(f'tag:mat-label@@text():{label_text}', timeout=5)
        if not label:
            self._log(f"Can't find label: {label_text}")
            return False
            
        container = label.parent('tag:app-select-control')
        select_box = container.ele('tag:mat-select')
        
        if not select_box:
            self._log("Can't find select box")
            return False

        select_box.click(by_js=True)
        time.sleep(0.5)
        
        option = self.page.ele(f'tag:mat-option@@text():{option_text}', timeout=3)
        if option:
            option.click(by_js=True)
            time.sleep(0.5)
            return True
        else:
            self._log(f"Can't find option: {option_text}")
            return False

    def book(self, slot_info: VSQueryResult, user_inputs: Dict) -> VSBookResult:
        res = VSBookResult()
        return res
    
    def _save_browser_session(self):
        self._log("Abstract browser session env...")
        cookies_dict = self.page.cookies(all_domains=True, all_info=True)
        cookies_str = cookies_dict.as_json()
        local_storage_str = self.page.run_js('return JSON.stringify(window.localStorage) || "{}"')
        session_storage_str = self.page.run_js('return JSON.stringify(window.sessionStorage) || "{}"')
        proxy_str = ""
        if hasattr(self, 'config') and hasattr(self.config, 'proxy') and self.config.proxy.ip:
            p = self.config.proxy
            if p.username and p.password:
                proxy_str = f"{p.scheme}://{p.username}:{p.password}@{p.ip}:{p.port}"
            else:
                proxy_str = f"{p.scheme}://{p.ip}:{p.port}"
        session_data = VSCloudApi.Instance().create_http_session(
            session_id=str(uuid.uuid4().hex),
            cookies=cookies_str,
            local_storage=local_storage_str,
            session_storage=session_storage_str,
            user_agent=self.page.user_agent,
            page=self.page.url,
            proxy=proxy_str
        )
        return session_data.get('session_id')
    
    def _perform_request(self, method, url, headers=None, data=None, json_data=None, params=None, retry_count=0):
        if not self.page:
            raise BizLogicError("Browser not init")
        
        req_url = url
        if params:
            sep = '&' if '?' in req_url else '?'
            req_url += sep + urlencode(params)
            
        fetch_opts = { "method": method.upper(), "headers": headers or {}, "credentials": "include" }
        
        if json_data:
            fetch_opts['body'] = json.dumps(json_data)
            fetch_opts['headers']['Content-Type'] = 'application/json'
        elif data:
            if isinstance(data, dict):
                fetch_opts['body'] = urlencode(data)
                fetch_opts['headers']['Content-Type'] = 'application/x-www-form-urlencoded; charset=UTF-8'
            else:
                fetch_opts['body'] = data

        js = f"""
        return fetch("{req_url}", {json.dumps(fetch_opts)})
        .then(async r => {{
            const h = {{}}; r.headers.forEach((v, k) => h[k] = v);
            return {{ status: r.status, body: await r.text(), headers: h, url: r.url }};
        }}).catch(e => {{ return {{ status: 0, body: e.toString() }}; }});
        """
        
        resp = BrowserResponse(self.page.run_js(js, timeout=60))
        
        if resp.status_code == 200:
            return resp
        elif resp.status_code == 403:
            if "Just a moment" in resp.text and retry_count < 2:
                self._log("Cloudflare 403. Refreshing...")
                if self._refresh_firewall_session():
                    return self._perform_request(method, url, headers, data, json_data, params, retry_count+1)
            raise PermissionDeniedError(f"HTTP 403: {resp.text[:100]}")
        elif resp.status_code == 429:
            self.is_healthy = False
            raise RateLimiteddError()
        elif resp.status_code in [401, 419]:
            self.is_healthy = False
            raise SessionExpiredOrInvalidError()
        else:
            raise BizLogicError(f"HTTP {resp.status_code}: {resp.text[:100]}")

    def _filter_dates(self, dates, start, end):
        if not start or not end: return dates
        valid = []
        s = datetime.strptime(start[:10], "%Y-%m-%d")
        e = datetime.strptime(end[:10], "%Y-%m-%d")
        for d in dates:
            c = datetime.strptime(d, "%Y-%m-%d")
            if s <= c <= e: valid.append(d)
        random.shuffle(valid)
        return valid

    def cleanup(self):
        if self.page:
            try: self.page.quit()
            except: pass
            self.page = None
        if os.path.exists(self.root_workspace):
            for _ in range(3):
                try: time.sleep(0.2); shutil.rmtree(self.root_workspace, ignore_errors=True); break
                except: time.sleep(0.5)
        if self.tunnel:
            try: self.tunnel.stop()
            except: pass
            self.tunnel = None
        
    def __del__(self):
        self.cleanup()