using System.Net.WebSockets;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using YD_YiLu.Api.WebSockets;
using YD_YiLu.Commons.Dto.Running;

namespace YD_YiLu.Api.Controllers
{
    /// <summary>
    /// 阳光跑接口。
    /// </summary>
    [AllowAnonymous]
    public class RunningController : ControllerBase
    {
        private readonly ICameraDeviceSocketRegistry _registry;
        private readonly ILogger<RunningController> _logger;

        public RunningController(ICameraDeviceSocketRegistry registry, ILogger<RunningController> logger)
        {
            _registry = registry;
            _logger = logger;
        }

        /// <summary>
        /// 跑道人员变更状态。
        /// </summary>
        [HttpPost]
        [Route("/running/result/stage")]
        public object ResultStage([FromBody] RunningStageRequestDto dto)
        {
            _logger.LogInformation(
                "Running stage changed. DeviceSerial: {DeviceSerial}, UserCount: {UserCount}",
                dto?.DeviceSerial,
                dto?.RunUserList?.Count ?? 0);

            return new { };
        }

        /// <summary>
        /// 平台指定用户下发人脸通知(旧)。
        /// </summary>
        [HttpPost]
        [Route("/station:user:push")]
        public async Task<object> StationUserPush([FromBody] JObject body, [FromQuery] string deviceSerial = "")
        {
            return await SendSocketMessageAsync("station:user:push", body, deviceSerial);
        }

        /// <summary>
        /// 平台下发人脸通知。
        /// </summary>
        [HttpPost]
        [Route("/station:remind")]
        public async Task<object> StationRemind([FromBody] JObject body, [FromQuery] string deviceSerial = "")
        {
            return await SendSocketMessageAsync("station:remind", body, deviceSerial);
        }

        /// <summary>
        /// 跑步小组重启。
        /// </summary>
        [HttpPost]
        [Route("/running:group:restart")]
        public async Task<object> RunningGroupRestart([FromBody] JObject body, [FromQuery] string deviceSerial = "")
        {
            return await SendSocketMessageAsync("running:group:restart", body, deviceSerial);
        }

        /// <summary>
        /// 跑步小组推送。
        /// </summary>
        [HttpPost]
        [Route("/running:group:push")]
        public async Task<object> RunningGroupPush([FromBody] JObject body, [FromQuery] string deviceSerial = "")
        {
            return await SendSocketMessageAsync("running:group:push", body, deviceSerial);
        }

        /// <summary>
        /// 跑步小组自动分组。
        /// </summary>
        [HttpPost]
        [Route("/running:group:auto")]
        public async Task<object> RunningGroupAuto([FromBody] JObject body, [FromQuery] string deviceSerial = "")
        {
            return await SendSocketMessageAsync("running:group:auto", body, deviceSerial);
        }

        /// <summary>
        /// 设备指令。
        /// </summary>
        [HttpPost]
        [Route("/device:instruct")]
        public async Task<object> DeviceInstruct([FromBody] JObject body, [FromQuery] string deviceSerial = "")
        {
            return await SendSocketMessageAsync("device:instruct", body, deviceSerial);
        }

        private async Task<object> SendSocketMessageAsync(string request, JObject body, string deviceSerial)
        {
            body ??= new JObject();

            var serial = FirstNotEmpty(deviceSerial, FindString(body, "serialNumber"), FindString(body, "deviceSerial"));
            if (string.IsNullOrWhiteSpace(serial))
            {
                return new
                {
                    success = false,
                    message = "deviceSerial不能为空"
                };
            }

            if (!_registry.TryGet(serial, out var socket) || socket.State != WebSocketState.Open)
            {
                return new
                {
                    success = false,
                    serialNumber = serial,
                    message = "设备不在线"
                };
            }

            var message = NormalizeSocketMessage(request, body);
            await CameraDeviceWebSocketHandler.SendAsync(
                socket,
                message.ToString(Formatting.None),
                HttpContext.RequestAborted);

            _logger.LogInformation("Running socket message sent. Request: {Request}, SerialNumber: {SerialNumber}", request, serial);

            return new
            {
                success = true,
                serialNumber = serial
            };
        }

        private static JObject NormalizeSocketMessage(string request, JObject body)
        {
            var message = (JObject)body.DeepClone();

            if (string.IsNullOrWhiteSpace(message["msgId"]?.ToString()))
                message["msgId"] = Guid.NewGuid().ToString("N");

            message["request"] = request;
            message["code"] ??= 0;
            message["msg"] ??= "";
            message["data"] ??= new JObject();

            return message;
        }

        private static string FirstNotEmpty(params string[] values)
        {
            return values.FirstOrDefault(x => !string.IsNullOrWhiteSpace(x)) ?? "";
        }

        private static string FindString(JToken token, string name)
        {
            if (token == null)
                return "";

            if (token.Type == JTokenType.Object)
            {
                var obj = (JObject)token;
                foreach (var property in obj.Properties())
                {
                    if (string.Equals(property.Name, name, StringComparison.OrdinalIgnoreCase))
                    {
                        var value = property.Value?.ToString();
                        if (!string.IsNullOrWhiteSpace(value))
                            return value;
                    }
                }
            }

            foreach (var child in token.Children())
            {
                var value = FindString(child, name);
                if (!string.IsNullOrWhiteSpace(value))
                    return value;
            }

            return "";
        }
    }
}