using CommunityToolkit.Mvvm.ComponentModel;

namespace YZWater.Core.Services;

/// <summary>
/// 语言切换服务
/// </summary>
public partial class LanguageService : ObservableObject
{
    private static LanguageService? _instance;
    public static LanguageService Instance => _instance ??= new LanguageService();

    [ObservableProperty]
    private bool _isChinese = true;

    /// <summary>
    /// 语言变更事件
    /// </summary>
    public event Action? LanguageChanged;

    private LanguageService() { }

    /// <summary>
    /// 从配置加载语言偏好
    /// </summary>
    public void LoadFromConfig()
    {
        var config = ConfigService.GetConfig();
        if (config != null)
        {
            IsChinese = config.IsChinese;
        }
    }

    /// <summary>
    /// 切换语言并保存
    /// </summary>
    public void ToggleLanguage()
    {
        IsChinese = !IsChinese;
        SaveToConfig();
        LanguageChanged?.Invoke();
    }

    private void SaveToConfig()
    {
        var config = ConfigService.GetConfig();
        if (config != null)
        {
            config.IsChinese = IsChinese;
            ConfigService.SaveConfig();
        }
    }

    /// <summary>
    /// 获取翻译
    /// </summary>
    public string Get(string key)
    {
        return IsChinese ? _zh.GetValueOrDefault(key, key) : _en.GetValueOrDefault(key, key);
    }

    // ─── 翻译字典 ───

    private static readonly Dictionary<string, string> _zh = new()
    {
        // 通用
        ["AppName"] = "污水处理监控系统",
        ["Version"] = "版本",
        // 导航
        ["NavProcess"] = "工艺流程",
        ["NavParams"] = "参数设置",
        ["NavFlow"] = "流量记录",
        ["NavAlarm"] = "报警记录",
        ["NavAbout"] = "关于",
        // ViewA 标题栏
        ["ProcessFlow"] = "工艺流程",
        ["PlcConnected"] = "PLC 已连接",
        ["PlcDisconnected"] = "PLC 未连接",
        ["Connect"] = "连接",
        ["Disconnect"] = "断开",
        ["Refresh"] = "刷新",
        // ViewA 水箱
        ["TankInlet"] = "入口池",
        ["TankBio"] = "生化池",
        ["TankSediment"] = "沉淀池",
        ["TankOutlet"] = "出口池",
        ["Level"] = "液位",
        // ViewA 泵/风机
        ["Pump1"] = "进水泵1",
        ["Pump2"] = "进水泵2",
        ["Pump3"] = "回流泵",
        ["Pump4"] = "排泥泵",
        ["Pump5"] = "加药泵",
        ["Fan1"] = "风机1",
        ["Fan2"] = "风机2",
        // ViewA 阀门
        ["ValveInlet"] = "进水",
        ["ValveAeration"] = "曝气",
        ["ValveReflux"] = "回流",
        ["ValveOutlet"] = "出水",
        // ViewA 数据面板
        ["Mode"] = "运行模式",
        ["Realtime"] = "实时数据",
        ["Inflow"] = "进水流量",
        ["Outflow"] = "出水流量",
        ["Delta"] = "差值",
        ["Statistics"] = "运行统计",
        ["Runtime"] = "运行时间",
        ["Devices"] = "设备",
        ["Alarm"] = "报警",
        ["Efficiency"] = "效率",
        ["Active"] = "运行中",
        ["Stopped"] = "已停止",
        // ViewA 快捷操作
        ["QuickOps"] = "快捷操作",
        ["StartAll"] = "全部启动",
        ["StopAll"] = "全部停止",
        ["AckAlarm"] = "报警确认",
        ["Export"] = "导出",
        // ViewA 底部状态栏
        ["FlowMeters"] = "流量监测",
        ["DeviceStatus"] = "设备状态",
        // ViewB
        ["Parameters"] = "参数设置",
        ["SysConfig"] = "系统参数配置",
        ["PlcConnection"] = "PLC 连接设置",
        ["IpAddress"] = "IP 地址",
        ["Port"] = "端口",
        ["AutoConnect"] = "自动连接",
        ["Status"] = "状态",
        ["Test"] = "测试",
        ["AlarmThresholds"] = "报警阈值设置",
        ["LevelHigh"] = "液位高限",
        ["LevelLow"] = "液位低限",
        ["FlowHigh"] = "流量高限",
        ["PumpSettings"] = "泵设置",
        ["Frequency"] = "频率",
        ["SaveConfig"] = "保存配置",
        ["ResetDefault"] = "恢复默认",
        ["Connected"] = "已连接",
        ["Disconnected"] = "未连接",
        ["Connecting"] = "连接中...",
        // ViewC
        ["FlowRecords"] = "流量记录",
        ["FlowHistory"] = "流量历史数据",
        ["From"] = "从",
        ["To"] = "到",
        ["Query"] = "查询",
        ["ExportCsv"] = "导出CSV",
        ["PurgeOld"] = "清除旧数据",
        ["InflowTrend"] = "进水流量趋势",
        ["OutflowTrend"] = "出水流量趋势",
        // ViewD
        ["AlarmLog"] = "报警记录",
        ["AlarmHistory"] = "报警历史记录",
        ["Unconfirmed"] = "未确认",
        ["AckAll"] = "全部确认",
        ["Purge"] = "清除",
        ["Time"] = "时间",
        ["Type"] = "类型",
        ["Message"] = "消息",
        ["Value"] = "数值",
        ["Level2"] = "级别",
        ["AckTime"] = "确认时间",
        ["AckBy"] = "确认人",
        ["AlarmDetail"] = "报警详情",
        // ViewE
        ["About"] = "关于",
        ["SystemInfo"] = "系统信息",
        ["Description"] = "基于 Avalonia UI 的跨平台污水处理厂监控系统",
        ["TechStack"] = "技术栈",
        ["Company"] = "公司信息",
        ["CompanyName"] = "公司名称",
        ["Contact"] = "联系人",
        ["Phone"] = "联系电话",
        ["VisitWebsite"] = "访问官网",
        ["CheckUpdate"] = "检查更新",
        ["Copyright"] = "© 扬州旭轩科技有限公司",
        // 控件默认值
        ["DefaultTank"] = "水箱",
        ["DefaultPump"] = "泵",
        ["DefaultFan"] = "风扇",
        ["DefaultValve"] = "阀门",
        ["DefaultGauge"] = "仪表",
        ["DefaultDevice"] = "设备",
    };

    private static readonly Dictionary<string, string> _en = new()
    {
        ["AppName"] = "Wastewater Treatment System",
        ["Version"] = "Version",
        ["NavProcess"] = "Process",
        ["NavParams"] = "Params",
        ["NavFlow"] = "Flow",
        ["NavAlarm"] = "Alarm",
        ["NavAbout"] = "About",
        ["ProcessFlow"] = "PROCESS FLOW",
        ["PlcConnected"] = "PLC CONNECTED",
        ["PlcDisconnected"] = "PLC DISCONNECTED",
        ["Connect"] = "CONNECT",
        ["Disconnect"] = "DISCONNECT",
        ["Refresh"] = "REFRESH",
        ["TankInlet"] = "Inlet",
        ["TankBio"] = "Bio Tank",
        ["TankSediment"] = "Sediment",
        ["TankOutlet"] = "Outlet",
        ["Level"] = "Level",
        ["Pump1"] = "Inlet Pump 1",
        ["Pump2"] = "Inlet Pump 2",
        ["Pump3"] = "Reflux Pump",
        ["Pump4"] = "Sludge Pump",
        ["Pump5"] = "Dosing Pump",
        ["Fan1"] = "Fan 1",
        ["Fan2"] = "Fan 2",
        ["ValveInlet"] = "Inlet",
        ["ValveAeration"] = "Aeration",
        ["ValveReflux"] = "Reflux",
        ["ValveOutlet"] = "Outlet",
        ["Mode"] = "MODE",
        ["Realtime"] = "REALTIME",
        ["Inflow"] = "INFLOW",
        ["Outflow"] = "OUTFLOW",
        ["Delta"] = "DELTA",
        ["Statistics"] = "STATISTICS",
        ["Runtime"] = "RUNTIME",
        ["Devices"] = "DEVICES",
        ["Alarm"] = "ALARM",
        ["Efficiency"] = "EFFICIENCY",
        ["Active"] = "ACTIVE",
        ["Stopped"] = "STOPPED",
        ["QuickOps"] = "QUICK OPS",
        ["StartAll"] = "START ALL",
        ["StopAll"] = "STOP ALL",
        ["AckAlarm"] = "ACK ALARM",
        ["Export"] = "EXPORT",
        ["FlowMeters"] = "FLOW METERS",
        ["DeviceStatus"] = "DEVICE STATUS",
        ["Parameters"] = "PARAMETERS",
        ["SysConfig"] = "System Configuration",
        ["PlcConnection"] = "PLC CONNECTION",
        ["IpAddress"] = "IP ADDRESS",
        ["Port"] = "PORT",
        ["AutoConnect"] = "AUTO CONNECT",
        ["Status"] = "STATUS",
        ["Test"] = "TEST",
        ["AlarmThresholds"] = "ALARM THRESHOLDS",
        ["LevelHigh"] = "LEVEL HIGH",
        ["LevelLow"] = "LEVEL LOW",
        ["FlowHigh"] = "FLOW HIGH",
        ["PumpSettings"] = "PUMP SETTINGS",
        ["Frequency"] = "FREQUENCY",
        ["SaveConfig"] = "SAVE CONFIG",
        ["ResetDefault"] = "RESET DEFAULT",
        ["Connected"] = "Connected",
        ["Disconnected"] = "Disconnected",
        ["Connecting"] = "Connecting...",
        ["FlowRecords"] = "FLOW RECORDS",
        ["FlowHistory"] = "Flow History Data",
        ["From"] = "FROM",
        ["To"] = "TO",
        ["Query"] = "QUERY",
        ["ExportCsv"] = "EXPORT CSV",
        ["PurgeOld"] = "PURGE OLD",
        ["InflowTrend"] = "INFLOW TREND",
        ["OutflowTrend"] = "OUTFLOW TREND",
        ["AlarmLog"] = "ALARM LOG",
        ["AlarmHistory"] = "Alarm History",
        ["Unconfirmed"] = "Unconfirmed",
        ["AckAll"] = "ACK ALL",
        ["Purge"] = "PURGE",
        ["Time"] = "TIME",
        ["Type"] = "TYPE",
        ["Message"] = "MESSAGE",
        ["Value"] = "VALUE",
        ["Level2"] = "LEVEL",
        ["AckTime"] = "ACK TIME",
        ["AckBy"] = "ACK BY",
        ["AlarmDetail"] = "ALARM DETAIL",
        ["About"] = "ABOUT",
        ["SystemInfo"] = "SYSTEM INFO",
        ["Description"] = "Cross-platform wastewater treatment plant monitoring system based on Avalonia UI",
        ["TechStack"] = "TECH STACK",
        ["Company"] = "COMPANY",
        ["CompanyName"] = "COMPANY NAME",
        ["Contact"] = "CONTACT",
        ["Phone"] = "PHONE",
        ["VisitWebsite"] = "VISIT WEBSITE",
        ["CheckUpdate"] = "CHECK UPDATE",
        ["Copyright"] = "© Yangzhou Xuxuan Technology Co., Ltd.",
        ["DefaultTank"] = "Tank",
        ["DefaultPump"] = "Pump",
        ["DefaultFan"] = "Fan",
        ["DefaultValve"] = "Valve",
        ["DefaultGauge"] = "Gauge",
        ["DefaultDevice"] = "Device",
    };
}