"""
Python软件授权验证器 - 现代化GUI版本
集成了CustomTkinter实现的Material Design风格界面
"""

import os
import json
import time
import hashlib
import requests
from datetime import datetime, timedelta
from typing import Optional, Tuple, Dict, Any
import threading

# 尝试导入CustomTkinter，如果失败则使用标准tkinter
try:
    import customtkinter as ctk
    CTK_AVAILABLE = True
    ctk.set_appearance_mode("dark")
    ctk.set_default_color_theme("blue")
    # 设置主题和颜色
    # ctk.set_appearance_mode("dark")  # 可选: "light", "dark", "system"
    # ctk.set_default_color_theme("blue")  # 可选: "blue", "green", "dark-blue"
except ImportError:
    CTK_AVAILABLE = False
    import tkinter as tk
    from tkinter import simpledialog, messagebox

# ===== 原有的类保持不变 =====

class MachineCodeGenerator:
    """独立版本的机器码生成器"""

    @staticmethod
    def generate() -> str:
        """生成32位机器码"""
        import platform
        import uuid

        hw_info = []

        try:
            system = platform.system().lower()

            try:
                system_uuid = str(uuid.getnode())
                if system_uuid and system_uuid != '0':
                    hw_info.append(system_uuid)
            except:
                pass

            try:
                hostname = platform.node()
                if hostname:
                    hw_info.append(hostname)
            except:
                pass

            try:
                system_info = f"{system}_{platform.release()}_{platform.machine()}"
                hw_info.append(system_info)
            except:
                pass

            try:
                python_version = platform.python_version()
                hw_info.append(python_version)
            except:
                pass

        except Exception as e:
            print(f"获取硬件信息时出错: {e}")

        if not hw_info:
            hw_info = [str(uuid.uuid4()), str(uuid.uuid4())]

        combined_info = '|'.join(hw_info)
        hash_obj = hashlib.sha256(combined_info.encode('utf-8'))
        machine_code = hash_obj.hexdigest()[:32].upper()

        return machine_code


class SimpleCrypto:
    """简单的加密解密工具"""

    @staticmethod
    def generate_hash(data: str, salt: str = "") -> str:
        """生成哈希值"""
        combined = f"{data}{salt}".encode('utf-8')
        return hashlib.sha256(combined).hexdigest()

    @staticmethod
    def generate_signature(data: str, secret_key: str) -> str:
        """生成签名"""
        combined = f"{data}{secret_key}".encode('utf-8')
        return hashlib.sha256(combined).hexdigest()


class AuthCache:
    """授权信息缓存管理"""

    def __init__(self, cache_file: str = ".auth_cache"):
        self.cache_file = cache_file
        self.cache_data = self._load_cache()

    def _load_cache(self) -> Dict[str, Any]:
        """加载缓存"""
        try:
            if os.path.exists(self.cache_file):
                with open(self.cache_file, 'r', encoding='utf-8') as f:
                    return json.load(f)
        except Exception:
            pass
        return {}

    def _save_cache(self):
        """保存缓存"""
        try:
            with open(self.cache_file, 'w', encoding='utf-8') as f:
                json.dump(self.cache_data, f, ensure_ascii=False, indent=2)
        except Exception:
            pass

    def get_auth_info(self, software_id: str) -> Optional[Dict[str, Any]]:
        """获取授权信息"""
        key = f"auth_{software_id}"
        return self.cache_data.get(key)

    def set_auth_info(self, software_id: str, auth_info: Dict[str, Any]):
        """设置授权信息"""
        key = f"auth_{software_id}"
        self.cache_data[key] = auth_info
        self._save_cache()

    def clear_cache(self, software_id = None):
        """清除缓存"""
        if software_id:
            key = f"auth_{software_id}"
            self.cache_data.pop(key, None)
        else:
            self.cache_data.clear()
        self._save_cache()


# ===== 现代化GUI组件 =====

class ModernAuthDialog:
    """现代化授权验证对话框"""

    def __init__(self,
                 software_id: str,
                 machine_code: str,
                 on_verify_callback,
                 parent=None):
        """初始化对话框"""
        self.software_id = software_id
        self.machine_code = machine_code
        self.on_verify_callback = on_verify_callback
        self.result = None
        self.license_key = None

        if CTK_AVAILABLE:
            self.window = ctk.CTk()
        else:
            self.window = tk.Tk()

        self._setup_window()
        self._create_widgets()

    def _setup_window(self):
        """设置窗口属性"""
        self.window.title("软件授权验证")

        if CTK_AVAILABLE:
            self.window.geometry("400x400")
        else:
            self.window.geometry("350x400")

        self.window.resizable(False, False)

        # 窗口居中
        self.window.update_idletasks()
        width = self.window.winfo_width()
        height = self.window.winfo_height()
        x = (self.window.winfo_screenwidth() // 2) - (width // 2)
        y = (self.window.winfo_screenheight() // 2) - (height // 2)
        self.window.geometry(f'{width}x{height}+{x}+{y}')

    def _create_widgets(self):
        """创建界面组件"""
        if CTK_AVAILABLE:
            self._create_modern_widgets()
        else:
            self._create_classic_widgets()

    def _create_modern_widgets(self):
        """创建现代化界面（CustomTkinter）"""
        main_frame = ctk.CTkFrame(self.window, fg_color="transparent")
        main_frame.pack(fill="both", expand=True, padx=30, pady=30)

        # Logo区域
        logo_frame = ctk.CTkFrame(main_frame, fg_color="transparent")
        logo_frame.pack(fill="x", pady=(0, 20))

        ctk.CTkLabel(
            logo_frame,
            text="🔐",
            font=ctk.CTkFont(size=60)
        ).pack(pady=(0, 10))

        ctk.CTkLabel(
            logo_frame,
            text="软件授权验证",
            font=ctk.CTkFont(size=28, weight="bold")
        ).pack()

        ctk.CTkLabel(
            logo_frame,
            text="请输入您的授权卡密以继续使用",
            font=ctk.CTkFont(size=13),
            text_color="gray60"
        ).pack(pady=(5, 0))

        # 信息卡片
        info_frame = ctk.CTkFrame(main_frame)
        info_frame.pack(fill="x", pady=20)

        # 软件ID
        software_id_frame = ctk.CTkFrame(info_frame, fg_color="transparent")
        software_id_frame.pack(fill="x", padx=20, pady=(15, 8))

        ctk.CTkLabel(
            software_id_frame,
            text="软件ID",
            font=ctk.CTkFont(size=12, weight="bold"),
            text_color="gray70"
        ).pack(anchor="w")

        ctk.CTkLabel(
            software_id_frame,
            text=self.software_id,
            font=ctk.CTkFont(size=14),
            text_color="white"
        ).pack(anchor="w", pady=(5, 0))

        ctk.CTkFrame(info_frame, height=1, fg_color="gray30").pack(fill="x", padx=20, pady=8)

        # 机器码
        machine_code_frame = ctk.CTkFrame(info_frame, fg_color="transparent")
        machine_code_frame.pack(fill="x", padx=20, pady=(8, 15))

        ctk.CTkLabel(
            machine_code_frame,
            text="机器码",
            font=ctk.CTkFont(size=12, weight="bold"),
            text_color="gray70"
        ).pack(anchor="w")

        machine_code_display = f"{self.machine_code[:8]}...{self.machine_code[-8:]}"
        ctk.CTkLabel(
            machine_code_frame,
            text=machine_code_display,
            font=ctk.CTkFont(size=14, family="Courier"),
            text_color="white"
        ).pack(anchor="w", pady=(5, 0))

        # 输入区域
        input_frame = ctk.CTkFrame(main_frame, fg_color="transparent")
        input_frame.pack(fill="x", pady=20)

        ctk.CTkLabel(
            input_frame,
            text="授权卡密",
            font=ctk.CTkFont(size=14, weight="bold"),
            anchor="w"
        ).pack(fill="x", pady=(0, 10))

        self.license_entry = ctk.CTkEntry(
            input_frame,
            height=45,
            font=ctk.CTkFont(size=14),
            placeholder_text="请输入您的授权卡密",
            border_width=2
        )
        self.license_entry.pack(fill="x")
        self.license_entry.bind("<Return>", lambda e: self._verify_license())

        ctk.CTkLabel(
            input_frame,
            text="💡 试用卡密以 'TRIAL_' 开头",
            font=ctk.CTkFont(size=11),
            text_color="gray60"
        ).pack(anchor="w", pady=(8, 0))

        # 状态区域
        self.status_frame = ctk.CTkFrame(main_frame, fg_color="transparent")
        self.status_frame.pack(fill="x", pady=(10, 20))

        self.status_label = ctk.CTkLabel(
            self.status_frame,
            text="",
            font=ctk.CTkFont(size=12),
            text_color="gray60",
            wraplength=400
        )
        self.status_label.pack()

        # 按钮区域
        button_frame = ctk.CTkFrame(main_frame, fg_color="transparent")
        button_frame.pack(fill="x", pady=(10, 0))

        self.verify_button = ctk.CTkButton(
            button_frame,
            text="验证授权",
            height=45,
            font=ctk.CTkFont(size=15, weight="bold"),
            command=self._verify_license,
            corner_radius=10
        )
        self.verify_button.pack(fill="x", pady=(0, 10))

        self.cancel_button = ctk.CTkButton(
            button_frame,
            text="取消",
            height=40,
            font=ctk.CTkFont(size=14),
            command=self._cancel,
            fg_color="gray30",
            hover_color="gray40",
            corner_radius=10
        )
        self.cancel_button.pack(fill="x")

        self.license_entry.focus()

    def _create_classic_widgets(self):
        """创建经典界面（标准Tkinter）"""
        main_frame = tk.Frame(self.window, bg="white")
        main_frame.pack(fill="both", expand=True, padx=20, pady=20)

        # 标题
        tk.Label(
            main_frame,
            text="🔐 软件授权验证",
            font=("Arial", 20, "bold"),
            bg="white"
        ).pack(pady=(10, 20))

        # 信息框
        info_frame = tk.LabelFrame(main_frame, text="授权信息", font=("Arial", 10), bg="white")
        info_frame.pack(fill="x", pady=10)

        tk.Label(info_frame, text=f"软件ID: {self.software_id}", bg="white").pack(anchor="w", padx=10, pady=5)
        tk.Label(info_frame, text=f"机器码: {self.machine_code[:16]}...", bg="white").pack(anchor="w", padx=10, pady=5)

        # 输入框
        input_frame = tk.Frame(main_frame, bg="white")
        input_frame.pack(fill="x", pady=20)

        tk.Label(input_frame, text="请输入授权卡密:", font=("Arial", 11), bg="white").pack(anchor="w")

        self.license_entry = tk.Entry(input_frame, font=("Arial", 12), width=40)
        self.license_entry.pack(fill="x", pady=10)
        self.license_entry.bind("<Return>", lambda e: self._verify_license())

        # 状态标签
        self.status_label = tk.Label(main_frame, text="", font=("Arial", 10), bg="white", fg="red")
        self.status_label.pack(pady=10)

        # 按钮
        button_frame = tk.Frame(main_frame, bg="white")
        button_frame.pack(fill="x", pady=10)

        self.verify_button = tk.Button(
            button_frame,
            text="验证授权",
            font=("Arial", 11, "bold"),
            bg="#4CAF50",
            fg="white",
            command=self._verify_license,
            width=15,
            height=2
        )
        self.verify_button.pack(side="left", padx=5)

        self.cancel_button = tk.Button(
            button_frame,
            text="取消",
            font=("Arial", 11),
            command=self._cancel,
            width=15,
            height=2
        )
        self.cancel_button.pack(side="left", padx=5)

        self.license_entry.focus()

    def _show_status(self, message: str, is_error: bool = False):
        """显示状态消息"""
        if CTK_AVAILABLE:
            color = "#ff5555" if is_error else "#50fa7b"
            icon = "❌" if is_error else "✓"
            self.status_label.configure(text=f"{icon} {message}", text_color=color)
        else:
            color = "red" if is_error else "green"
            self.status_label.configure(text=message, fg=color)

    def _verify_license(self):
        """验证卡密"""
        license_key = self.license_entry.get().strip()

        if not license_key:
            self._show_status("请输入授权卡密", is_error=True)
            return

        self.license_key = license_key

        # 禁用控件
        if CTK_AVAILABLE:
            self.verify_button.configure(state="disabled", text="验证中...")
            self.cancel_button.configure(state="disabled")
            self.license_entry.configure(state="disabled")
        else:
            self.verify_button.configure(state="disabled", text="验证中...")
            self.cancel_button.configure(state="disabled")
            self.license_entry.configure(state="disabled")

        # 在后台线程执行验证
        def verify_thread():
            success, message, auth_info = self.on_verify_callback(license_key)
            self.window.after(0, lambda: self._on_verify_complete(success, message, auth_info))

        thread = threading.Thread(target=verify_thread, daemon=True)
        thread.start()

    def _on_verify_complete(self, success: bool, message: str, auth_info: Any):
        """验证完成"""
        # 恢复控件
        if CTK_AVAILABLE:
            self.verify_button.configure(state="normal", text="验证授权")
            self.cancel_button.configure(state="normal")
            self.license_entry.configure(state="normal")
        else:
            self.verify_button.configure(state="normal", text="验证授权")
            self.cancel_button.configure(state="normal")
            self.license_entry.configure(state="normal")

        if success:
            self._show_status("验证成功！", is_error=False)
            self.result = (True, message, auth_info)
            self.window.after(1000, self.window.destroy)
        else:
            self._show_status(message, is_error=True)
            self.license_entry.delete(0, "end" if not CTK_AVAILABLE else "end")
            self.license_entry.focus()

    def _cancel(self):
        """取消"""
        self.result = (False, "用户取消", None)
        self.window.destroy()

    def show(self):
        """显示对话框"""
        self.window.mainloop()
        return self.result if self.result else (False, "用户取消", None)


class ModernMessageBox:
    """现代化消息框"""

    @staticmethod
    def show_info(title: str, message: str):
        """显示信息"""
        if CTK_AVAILABLE:
            ModernMessageBox._show_ctk_message(title, message, is_error=False)
        else:
            messagebox.showinfo(title, message)

    @staticmethod
    def show_error(title: str, message: str):
        """显示错误"""
        if CTK_AVAILABLE:
            ModernMessageBox._show_ctk_message(title, message, is_error=True)
        else:
            messagebox.showerror(title, message)

    @staticmethod
    def _show_ctk_message(title: str, message: str, is_error: bool):
        """显示CTK消息框"""
        dialog = ctk.CTk()
        dialog.title(title)
        dialog.geometry("400x250")
        dialog.resizable(False, False)

        # 居中
        dialog.update_idletasks()
        x = (dialog.winfo_screenwidth() // 2) - 200
        y = (dialog.winfo_screenheight() // 2) - 125
        dialog.geometry(f'400x250+{x}+{y}')

        main_frame = ctk.CTkFrame(dialog, fg_color="transparent")
        main_frame.pack(fill="both", expand=True, padx=30, pady=30)

        # 图标
        icon = "❌" if is_error else "✓"
        color = "#ff5555" if is_error else "#50fa7b"

        ctk.CTkLabel(
            main_frame,
            text=icon,
            font=ctk.CTkFont(size=50),
            text_color=color
        ).pack(pady=(0, 15))

        ctk.CTkLabel(
            main_frame,
            text=title,
            font=ctk.CTkFont(size=20, weight="bold")
        ).pack(pady=(0, 10))

        ctk.CTkLabel(
            main_frame,
            text=message,
            font=ctk.CTkFont(size=13),
            text_color="gray70",
            wraplength=340
        ).pack(pady=(0, 20))

        ctk.CTkButton(
            main_frame,
            text="确定",
            height=40,
            font=ctk.CTkFont(size=14),
            command=dialog.destroy,
            corner_radius=10,
            fg_color="gray30" if is_error else None,
            hover_color="gray40" if is_error else None
        ).pack(fill="x")

        dialog.mainloop()


# ===== AuthValidator类（集成GUI）=====

class AuthValidator:
    """授权验证器主类"""

    def __init__(self,
                 software_id: str,
                 api_url: str = "http://localhost:5000/api/v1",
                 secret_key: str = "taiyi1224",
                 cache_days: int = 7,
                 timeout: int = 3,
                 gui_mode: bool = True):  # 默认启用GUI
        """初始化验证器"""
        self.software_id = software_id
        self.api_url = api_url.rstrip('/')
        self.secret_key = secret_key
        self.cache_days = cache_days
        self.timeout = timeout
        self.gui_mode = gui_mode

        self.machine_generator = MachineCodeGenerator()
        self.cache = AuthCache()
        self.machine_code = self._get_or_generate_machine_code()

        self.failed_attempts = 0
        self.last_attempt_time = None
        self.locked_until = None

    def _get_or_generate_machine_code(self) -> str:
        """获取或生成机器码"""
        cache_file = ".machine_code"

        try:
            if os.path.exists(cache_file):
                with open(cache_file, 'r') as f:
                    cached_code = f.read().strip()
                    if len(cached_code) == 32:
                        return cached_code
        except Exception:
            pass

        machine_code = self.machine_generator.generate()

        try:
            with open(cache_file, 'w') as f:
                f.write(machine_code)
        except Exception:
            pass

        return machine_code

    def _validate_license_format(self, license_key: str) -> bool:
        """验证卡密格式"""
        if not license_key:
            return False

        license_key = license_key.strip().replace(' ', '').replace('\t', '').upper()

        if len(license_key) < 16 or len(license_key) > 32:
            return False

        import re
        pattern = r'^[A-Z0-9_]+$'
        return bool(re.match(pattern, license_key))

    def _online_verify(self, license_key: str) -> Tuple[bool, str, Optional[Dict[str, Any]]]:
        """在线验证"""
        try:
            url = f"{self.api_url}/auth/verify"

            timestamp = int(datetime.utcnow().timestamp())
            data = {
                "software_id": self.software_id,
                "license_key": license_key,
                "machine_code": self.machine_code,
                "timestamp": timestamp
            }

            signature_data = f"{data['software_id']}{data['license_key']}{data['machine_code']}{data['timestamp']}"
            signature = SimpleCrypto.generate_signature(signature_data, self.secret_key)
            data["signature"] = signature

            response = requests.post(
                url,
                json=data,
                timeout=self.timeout,
                headers={'Content-Type': 'application/json'}
            )

            if response.status_code == 200:
                result = response.json()
                if result.get('success'):
                    auth_info = result.get('data', {})
                    return True, "验证成功", auth_info
                else:
                    return False, result.get('message', '验证失败'), None
            else:
                return False, f"网络请求失败: {response.status_code}", None

        except requests.exceptions.Timeout:
            return False, "网络超时，请检查网络连接", None
        except requests.exceptions.ConnectionError:
            return False, "无法连接到服务器", None
        except Exception as e:
            return False, f"验证过程出错: {str(e)}", None

    def _offline_verify(self) -> Tuple[bool, str]:
        """离线验证"""
        auth_info = self.cache.get_auth_info(self.software_id)
        if not auth_info:
            return False, "未找到有效的离线授权信息，请联网验证"

        cache_time = datetime.fromisoformat(auth_info.get('cache_time', ''))
        if datetime.utcnow() - cache_time > timedelta(days=self.cache_days):
            return False, f"离线授权已过期（超过{self.cache_days}天），请联网验证"

        if auth_info.get('machine_code') != self.machine_code:
            return False, "设备信息不匹配，请重新验证"

        expire_time = auth_info.get('expire_time')
        if expire_time:
            expire_datetime = datetime.fromisoformat(expire_time)
            if datetime.utcnow() > expire_datetime:
                return False, "授权已过期，请重新验证"

        return True, "离线验证成功"

    def _cache_auth_info(self, auth_info: Dict[str, Any]):
        """缓存授权信息"""
        auth_info['cache_time'] = datetime.utcnow().isoformat()
        self.cache.set_auth_info(self.software_id, auth_info)

    def validate(self) -> bool:
        """执行验证流程"""
        # 首先尝试离线验证
        offline_success, offline_message = self._offline_verify()
        if offline_success:
            return True

        # 离线验证失败，显示GUI输入卡密
        if self.gui_mode:
            dialog = ModernAuthDialog(
                software_id=self.software_id,
                machine_code=self.machine_code,
                on_verify_callback=self._online_verify
            )

            success, message, auth_info = dialog.show()

            if success and auth_info:
                self._cache_auth_info(auth_info)

                force_update = auth_info.get('force_update', False)
                download_url = auth_info.get('download_url')
                new_version = auth_info.get('new_version')

                if force_update and download_url:
                    ModernMessageBox.show_error(
                        "需要更新",
                        f"发现新版本 {new_version}\n请下载更新后重新启动程序"
                    )
                    try:
                        import webbrowser
                        webbrowser.open(download_url)
                    except:
                        pass
                    return False

                expire_time = auth_info.get('expire_time', '永久')
                ModernMessageBox.show_info(
                    "验证成功",
                    f"授权验证成功！\n\n有效期至: {expire_time}"
                )
                return True
            else:
                return False
        else:
            # 命令行模式（保留原有逻辑）
            print("命令行模式暂未实现，请使用gui_mode=True")
            return False

    def clear_cache(self):
        """清除本地缓存"""
        self.cache.clear_cache(self.software_id)
        try:
            if os.path.exists(".machine_code"):
                os.remove(".machine_code")
        except Exception:
            pass


# ===== 便捷函数 =====

def validate_license(software_id: str, **kwargs) -> bool:
    """便捷的验证函数"""
    validator = AuthValidator(software_id, **kwargs)
    return validator.validate()


def get_machine_code() -> str:
    """获取当前机器码"""
    return MachineCodeGenerator.generate()


# ===== 测试代码 =====

if __name__ == "__main__":
    # 测试验证器
    validator = AuthValidator(
        software_id="TEST_SOFTWARE_001",
        api_url="http://localhost:5000/api/v1",
        gui_mode=True
    )

    if validator.validate():
        print("✓ 授权验证成功！")
    else:
        print("✗ 授权验证失败！")