using IntegrationGateway.Core.Abstractions;
using IntegrationGateway.Core.Infrastructure;
using IntegrationGateway.Core.Models;

var builder = WebApplication.CreateBuilder(args);

// 注册 IHttpClientFactory
builder.Services.AddHttpClient("VolPro", c =>
{
    c.Timeout = TimeSpan.FromSeconds(30);
    c.DefaultRequestHeaders.Add("Accept", "application/json");
}).ConfigurePrimaryHttpMessageHandler(() => new SocketsHttpHandler
{
    PooledConnectionLifetime = TimeSpan.FromMinutes(5),
    MaxConnectionsPerServer = 10
});

var app = builder.Build();

// 读取配置
var gwCfg = app.Configuration.GetSection("Gateway");
var owlCfg = app.Configuration.GetSection("Owl");
var mc4Cfg = app.Configuration.GetSection("MC4");

// 创建适配器注册中心
var registry = new AdapterRegistry();

// 创建 VolPro 客户端工厂
var volProUrl = gwCfg["VolProBaseUrl"] ?? "http://localhost:9100";
var httpFactory = app.Services.GetRequiredService<IHttpClientFactory>();
var clientFactory = new GatewayClientFactory(httpFactory, volProUrl);

// 注册 OwlAdapter
var owlHttp = app.Services.GetRequiredService<IHttpClientFactory>().CreateClient("VolPro");
var owlAdapter = new IntegrationGateway.Adapters.Owl.OwlAdapter(
    "Owl:main", owlHttp,
    owlCfg["BaseUrl"] ?? "http://localhost:15123",
    owlCfg["Username"] ?? "admin",
    owlCfg["Password"] ?? "admin"
);
registry.Register(owlAdapter);

// 注册 MC4Adapter
var mc4Http = app.Services.GetRequiredService<IHttpClientFactory>().CreateClient("VolPro");
var mc4Adapter = new IntegrationGateway.Adapters.MC4.Mc4Adapter(
    "MC4:31ku", mc4Http,
    mc4Cfg["BaseUrl"] ?? "http://localhost:3000"
);
registry.Register(mc4Adapter);

// 并行初始化适配器
await registry.InitializeAllAsync();
Console.WriteLine($"[Gateway] {registry.All.Count} adapter(s) registered");

// ═══ B 组路由 ═══

// B1: 健康检查
app.MapGet("/api/gateway/health", async () =>
{
    var results = new List<object>();
    foreach (var a in registry.All)
    {
        bool healthy = false;
        try { healthy = await a.HealthCheckAsync(); } catch { }
        results.Add(new { a.AdapterCode, a.DisplayName, Healthy = healthy, a.Capabilities });
    }
    return Results.Ok(results);
});

// B2: 设备列表
app.MapGet("/api/gateway/devices", async (string adapter, int page, int size, string? keyword) =>
{
    var a = registry.FindByCode<IHasFlatDevices>(adapter);
    if (a == null) return Results.NotFound(new { error = "ADAPTER_NOT_FOUND", message = $"Adapter '{adapter}' not found or does not support flat devices" });
    return Results.Ok(await a.GetDevicesAsync(page, size, keyword));
});

// B3: 对象树
app.MapGet("/api/gateway/tree", async (string adapter) =>
{
    var a = registry.FindByCode<IHasOwnDeviceTree>(adapter);
    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED", message = $"Tree not supported by '{adapter}'" });
    return Results.Ok(await a.GetObjectTreeAsync());
});

// B6a: 实时流
app.MapGet("/api/gateway/streams/{adapter}/{deviceId}/live", async (string adapter, string deviceId) =>
{
    var a = registry.FindByCode<IHasStreams>(adapter);
    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED", message = $"Streams not supported by '{adapter}'" });
    var result = await a.GetLiveUrlAsync(deviceId);
    return result.WsFlv == null && result.Hls == null
        ? Results.Problem("No stream URL returned", statusCode: 502)
        : Results.Ok(result);
});

// B6b: 回放
app.MapGet("/api/gateway/streams/{adapter}/{deviceId}/playback", async (string adapter, string deviceId, DateTime start, DateTime end) =>
{
    var a = registry.FindByCode<IHasStreams>(adapter);
    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
    return Results.Ok(await a.GetPlaybackUrlAsync(deviceId, start, end));
});

// 截图
app.MapPost("/api/gateway/streams/{adapter}/{deviceId}/snapshot", async (string adapter, string deviceId) =>
{
    var a = registry.FindByCode<IHasStreams>(adapter);
    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
    return Results.Ok(await a.GetSnapshotAsync(deviceId));
});

// B7: PTZ
app.MapPost("/api/gateway/streams/{adapter}/{deviceId}/ptz", async (string adapter, string deviceId, PtzRequest req) =>
{
    var a = registry.FindByCode<IHasStreams>(adapter);
    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
    if (req.Action == "stop") await a.PtzStopAsync(deviceId);
    else await a.PtzControlAsync(deviceId, req.Direction ?? "stop", req.Speed);
    return Results.Ok();
});

// B4: 实时点值
app.MapGet("/api/gateway/realtime/{adapter}/{deviceId}", async (string adapter, string deviceId) =>
{
    var a = registry.FindByCode<IHasPoints>(adapter);
    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
    return Results.Ok(await a.GetRealtimeValuesAsync(deviceId));
});

// B5: 控制
app.MapPost("/api/gateway/realtime/{adapter}/control", async (string adapter, ControlRequest req) =>
{
    var a = registry.FindByCode<IHasPoints>(adapter);
    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
    await a.SetPointValueAsync(req.DeviceId ?? "", req.PointIndex, req.Value);
    return Results.Ok();
});

// B8: 告警查询
app.MapGet("/api/gateway/alarms/{adapter}", async (string adapter, int page, int size, DateTime from, DateTime to, string? level, string? state) =>
{
    var a = registry.FindByCode<IHasAlarms>(adapter);
    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
    return Results.Ok(await a.GetAlarmsAsync(page, size, from, to, level, state));
});

// B9: 告警确认
app.MapPost("/api/gateway/alarms/{adapter}/{alarmId}/confirm", async (string adapter, string alarmId) =>
{
    var a = registry.FindByCode<IHasAlarms>(adapter);
    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
    await a.ConfirmAlarmAsync(alarmId);
    return Results.Ok();
});

// 告警结束
app.MapPost("/api/gateway/alarms/{adapter}/{alarmId}/end", async (string adapter, string alarmId) =>
{
    var a = registry.FindByCode<IHasAlarms>(adapter);
    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
    await a.EndAlarmAsync(alarmId);
    return Results.Ok();
});

// 录像
app.MapGet("/api/gateway/recordings/{adapter}/{deviceId}", async (string adapter, string deviceId, DateTime start, DateTime end, int page, int size) =>
{
    var a = registry.FindByCode<IHasRecordings>(adapter);
    if (a == null) return Results.NotFound(new { error = "CAPABILITY_NOT_SUPPORTED" });
    return Results.Ok(await a.GetRecordingsAsync(deviceId, start, end, page, size));
});

// B3: 手动同步
app.MapPost("/api/gateway/devices/sync", async (string adapter) =>
{
    var a = registry.FindByCode<IGatewayAdapter>(adapter);
    if (a == null) return Results.NotFound(new { error = "ADAPTER_NOT_FOUND" });
    // 根据适配器能力触发对应同步
    if (a is IHasOwnDeviceTree tree)
    {
        var obj = await tree.GetObjectTreeAsync();
        return Results.Ok(new { nodeCount = obj.Count, message = "tree synced" });
    }
    if (a is IHasFlatDevices flat)
    {
        var dev = await flat.GetDevicesAsync(1, 1000);
        return Results.Ok(new { deviceCount = dev.Total, message = "devices synced" });
    }
    return Results.Ok(new { message = "no sync needed" });
});

app.Run();

// 请求 DTO
record PtzRequest(string? Direction, string Action, float Speed);
record ControlRequest(string? DeviceId, int PointIndex, double Value);