//
//  BTCMenuBarApp.swift
//  test1
//
//  Created by zl_vm on 2025/10/28.
//

import SwiftUI
import AppKit
import Combine

// macOS菜单栏应用主类
@MainActor
class BTCMenuBarApp: NSObject, ObservableObject {
    private var statusItem: NSStatusItem?
    private var popover: NSPopover?
    private var priceManager = PriceManager()
    private var cancellables = Set<AnyCancellable>()

    override init() {
        super.init()
        setupMenuBar()
    }

    // 设置菜单栏
    private func setupMenuBar() {
        // 创建状态栏项目
        statusItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength)

        guard let statusItem = statusItem else {
            print("❌ 无法创建状态栏项目")
            return
        }

        guard let button = statusItem.button else {
            print("❌ 无法获取状态栏按钮")
            return
        }

        // 设置BTC图标和标题
        updateMenuBarTitle(price: 0.0)
        button.action = #selector(menuBarClicked)
        button.target = self

        // 监听价格变化
        priceManager.$currentPrice
            .receive(on: DispatchQueue.main)
            .sink { [weak self] price in
                self?.updateMenuBarTitle(price: price)
            }
            .store(in: &cancellables)
    }

    // 更新菜单栏标题
    private func updateMenuBarTitle(price: Double) {
        DispatchQueue.main.async {
            guard let button = self.statusItem?.button else { return }

            // 创建BTC图标
            let btcImage = NSImage(systemSymbolName: "bitcoinsign.circle.fill", accessibilityDescription: "BTC")
            btcImage?.size = NSSize(width: 16, height: 16)

            // 设置图标
            button.image = btcImage

            // 根据状态设置标题
            if price == 0.0 {
                if self.priceManager.isFetching {
                    button.title = " 更新中..."
                } else if self.priceManager.lastError != nil {
                    button.title = " 错误"
                } else {
                    button.title = " 加载中..."
                }
            } else {
                button.title = String(format: " $%.2f", price)
            }
        }
    }

    // 菜单栏点击事件
    @objc private func menuBarClicked() {
        guard let button = statusItem?.button else {
            print("❌ 无法获取状态栏按钮")
            return
        }
        showMenu(from: button)
    }

    // 显示菜单
    private func showMenu(from view: NSView) {
        let menu = NSMenu()

        // 添加价格信息项（带BTC图标）
        let priceItem = NSMenuItem(title: priceManager.formattedPrice, action: nil, keyEquivalent: "")
        if let btcImage = NSImage(systemSymbolName: "bitcoinsign.circle.fill", accessibilityDescription: "BTC") {
            btcImage.size = NSSize(width: 16, height: 16)
            priceItem.image = btcImage
        }
        priceItem.isEnabled = false
        menu.addItem(priceItem)

        // 如果有错误，显示错误信息（带错误图标）
        if let errorMessage = priceManager.errorMessage {
            let errorItem = NSMenuItem(title: "错误: \(errorMessage)", action: nil, keyEquivalent: "")
            if let errorImage = NSImage(systemSymbolName: "exclamationmark.triangle.fill", accessibilityDescription: "错误") {
                errorImage.size = NSSize(width: 16, height: 16)
                errorItem.image = errorImage
            }
            errorItem.isEnabled = false
            menu.addItem(errorItem)
            menu.addItem(NSMenuItem.separator())
        }

        // 添加最后更新时间（带时钟图标）
        let timeItem = NSMenuItem(title: "上次更新: \(getCurrentTime())", action: nil, keyEquivalent: "")
        if let clockImage = NSImage(systemSymbolName: "clock", accessibilityDescription: "时间") {
            clockImage.size = NSSize(width: 16, height: 16)
            timeItem.image = clockImage
        }
        timeItem.isEnabled = false
        menu.addItem(timeItem)

        menu.addItem(NSMenuItem.separator())

        // 添加刷新按钮（带刷新图标）
        let refreshTitle = priceManager.isFetching ? "刷新中..." : "刷新价格"
        let refreshItem = NSMenuItem(title: refreshTitle, action: #selector(refreshPrice), keyEquivalent: "r")
        if let refreshImage = NSImage(systemSymbolName: priceManager.isFetching ? "hourglass" : "arrow.clockwise", accessibilityDescription: "刷新") {
            refreshImage.size = NSSize(width: 16, height: 16)
            refreshItem.image = refreshImage
        }
        refreshItem.target = self
        refreshItem.isEnabled = !priceManager.isFetching
        menu.addItem(refreshItem)

        menu.addItem(NSMenuItem.separator())

        // 添加关于按钮（带信息图标）
        let aboutItem = NSMenuItem(title: "关于", action: #selector(showAbout), keyEquivalent: "")
        if let infoImage = NSImage(systemSymbolName: "info.circle", accessibilityDescription: "关于") {
            infoImage.size = NSSize(width: 16, height: 16)
            aboutItem.image = infoImage
        }
        aboutItem.target = self
        menu.addItem(aboutItem)

        // 添加退出按钮（带退出图标）
        let quitItem = NSMenuItem(title: "退出", action: #selector(quitApp), keyEquivalent: "q")
        if let quitImage = NSImage(systemSymbolName: "power", accessibilityDescription: "退出") {
            quitImage.size = NSSize(width: 16, height: 16)
            quitItem.image = quitImage
        }
        quitItem.target = self
        menu.addItem(quitItem)

        // 安全显示菜单
        guard let statusItem = statusItem,
              let button = statusItem.button else {
            print("❌ 无法显示菜单 - 状态栏项目不可用")
            return
        }

        statusItem.menu = menu
        button.performClick(nil)
        statusItem.menu = nil
    }

    // 获取当前时间字符串
    private func getCurrentTime() -> String {
        let formatter = DateFormatter()
        formatter.timeStyle = .medium
        return formatter.string(from: Date())
    }

    // 刷新价格
    @objc private func refreshPrice() {
        Task {
            await priceManager.refreshPrice()
        }
    }

    // 显示关于对话框
    @objc private func showAbout() {
        let alert = NSAlert()
        alert.messageText = "BTC价格监控器"
        alert.informativeText = """
        🚀 一个专业的macOS菜单栏应用，用于实时显示BTC价格

        ✨ 功能特性：
        • 实时显示BTC/USDT价格
        • 每30秒自动刷新
        • 支持手动刷新 (Cmd+R)
        • 智能错误重试机制
        • 优雅的SF Symbols图标

        📊 技术信息：
        数据来源：币安官方API
        作者：张雷
        版本：1.0.0
        架构：SwiftUI + AppKit
        """
        alert.alertStyle = .informational
        alert.addButton(withTitle: "确定")
        alert.runModal()
    }

    // 退出应用
    @objc private func quitApp() {
        NSApplication.shared.terminate(nil)
    }
}