using System;
using System.Globalization;
using System.Net.Http;
using System.Threading.Tasks;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Newtonsoft.Json.Linq;

namespace NavisworksTransport.UnitTests.Integration
{
    internal sealed class NavisworksTestAutomationClient : IDisposable
    {
        private readonly HttpClient _httpClient;

        public NavisworksTestAutomationClient()
        {
            _httpClient = new HttpClient
            {
                BaseAddress = new Uri("http://127.0.0.1:18777"),
                Timeout = TimeSpan.FromSeconds(20)
            };
        }

        public async Task EnsureServiceReadyAsync(TimeSpan timeout)
        {
            DateTime deadlineUtc = DateTime.UtcNow.Add(timeout);
            Exception lastError = null;

            while (DateTime.UtcNow < deadlineUtc)
            {
                try
                {
                    JObject pingResponse = await GetJsonAsync("/api/test/ping").ConfigureAwait(false);
                    if (pingResponse.Value<bool?>("ok") == true)
                    {
                        return;
                    }
                }
                catch (Exception ex)
                {
                    lastError = ex;
                }

                await Task.Delay(TimeSpan.FromSeconds(1)).ConfigureAwait(false);
            }

            Assert.Fail(
                "Navisworks 测试服务未就绪。请先用 start-navisworks.bat 启动 Navisworks，并确保插件面板已加载。最后错误: {0}",
                lastError?.Message ?? "unknown");
        }

        public async Task<JObject> RunVirtualCollisionTestAsync(string pathType, int timeoutSeconds)
        {
            string requestUri = string.Format(
                "/api/test/run-virtual-collision-test?pathType={0}&timeoutSeconds={1}",
                Uri.EscapeDataString(pathType),
                timeoutSeconds);

            return await PostJsonAsync(requestUri).ConfigureAwait(false);
        }

        public async Task<JObject> AnalyzeAutoPathGridAsync(string pathType)
        {
            string requestUri = string.Format(
                "/api/test/analyze-auto-path-grid?pathType={0}",
                Uri.EscapeDataString(pathType));

            return await PostJsonAsync(requestUri).ConfigureAwait(false);
        }

        public async Task<JObject> RunAutoPathAsync(
            string pathType,
            string routeName,
            double objectLengthInMeters,
            double objectWidthInMeters,
            double safetyMarginInMeters,
            double gridSizeInMeters)
        {
            string requestUri = string.Format(
                CultureInfo.InvariantCulture,
                "/api/test/run-auto-path?pathType={0}&routeName={1}&objectLengthInMeters={2}&objectWidthInMeters={3}&safetyMarginInMeters={4}&gridSizeInMeters={5}",
                Uri.EscapeDataString(pathType),
                Uri.EscapeDataString(routeName),
                objectLengthInMeters,
                objectWidthInMeters,
                safetyMarginInMeters,
                gridSizeInMeters);

            return await PostJsonAsync(requestUri).ConfigureAwait(false);
        }

        private async Task<JObject> GetJsonAsync(string requestUri)
        {
            using (HttpResponseMessage response = await _httpClient.GetAsync(requestUri).ConfigureAwait(false))
            {
                string content = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
                response.EnsureSuccessStatusCode();
                return JObject.Parse(content);
            }
        }

        private async Task<JObject> PostJsonAsync(string requestUri)
        {
            using (HttpResponseMessage response = await _httpClient.PostAsync(requestUri, new StringContent(string.Empty)).ConfigureAwait(false))
            {
                string content = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
                response.EnsureSuccessStatusCode();
                return JObject.Parse(content);
            }
        }

        public void Dispose()
        {
            _httpClient.Dispose();
        }
    }
}