using System;
using System.Collections.Generic;
using System.IO;
using CounterDrone.Core;
using CounterDrone.Core.Models;
using CounterDrone.Core.Repository;
using CounterDrone.Core.Services;
using SQLite;
using Xunit;
using TaskStatus = CounterDrone.Core.Models.TaskStatus;

namespace CounterDrone.Core.Tests
{
    public class ScenarioServiceTests : IDisposable
    {
        private readonly string _testDir;
        private readonly SQLiteConnection _db;
        private readonly IScenarioService _service;

        public ScenarioServiceTests()
        {
            _testDir = Path.Combine(Path.GetTempPath(), $"cd_test_{Guid.NewGuid():N}");
            var paths = new TestPathProvider(_testDir);
            var dbManager = new DatabaseManager(paths);
            _db = dbManager.OpenMainDb();
            _service = new ScenarioService(
                new SimTaskRepository(_db),
                new CombatSceneRepository(_db),
                new ControlZoneRepository(_db),
                new TargetConfigRepository(_db),
                new EquipmentDeploymentRepository(_db),
                new CloudDispersalRepository(_db),
                new RoutePlanRepository(_db),
                new WaypointRepository(_db));
        }

        public void Dispose()
        {
            _db?.Close();
            if (Directory.Exists(_testDir))
                Directory.Delete(_testDir, true);
        }

        // ========== Task CRUD ==========

        [Fact]
        public void CreateTask_Valid_ReturnsTask()
        {
            var task = _service.CreateTask("测试任务", "SIM-20260611-001");

            Assert.NotNull(task);
            Assert.Equal("测试任务", task.Name);
            Assert.Equal("SIM-20260611-001", task.TaskNumber);
            Assert.Equal((int)TaskStatus.Configuring, task.Status);
            Assert.Equal(1, task.CurrentStep);
            Assert.NotEmpty(task.Id);
        }

        [Fact]
        public void CreateTask_AutoGeneratesTaskNumber()
        {
            var task = _service.CreateTask("自动编号", "");
            Assert.StartsWith("SIM-", task.TaskNumber);
        }

        [Fact]
        public void CreateTask_EmptyName_Throws()
        {
            Assert.Throws<ArgumentException>(() =>
                _service.CreateTask("", "SIM-001"));
        }

        [Fact]
        public void CreateTask_DuplicateNumber_Throws()
        {
            _service.CreateTask("Task A", "SIM-001");
            Assert.Throws<ArgumentException>(() =>
                _service.CreateTask("Task B", "SIM-001"));
        }

        [Fact]
        public void DeleteTask_RemovesTask()
        {
            var task = _service.CreateTask("ToDelete", "");
            _service.DeleteTask(task.Id);

            var detail = _service.GetTaskDetail(task.Id);
            Assert.Null(detail);
        }

        [Fact]
        public void GetTaskDetail_ReturnsFullConfig()
        {
            var task = _service.CreateTask("Full Config", "");

            // 保存各步骤配置
            _service.SaveScene(task.Id, new CombatScene
            {
                SceneType = (int)SceneType.Mountain,
                WindSpeed = 10.0,
                Temperature = 25.0,
            });

            _service.SaveTarget(task.Id, new TargetConfig
            {
                GroupId = "default",
                TargetType = (int)TargetType.FixedWing,
                Quantity = 3,
            });

            _service.SaveCloudDispersal(task.Id, new CloudDispersal
            {
                AerosolType = (int)AerosolType.ActiveMaterial,
                Duration = 45.0,
            });

            _service.UpdateStep(task.Id, 4);

            // 读取完整配置
            var detail = _service.GetTaskDetail(task.Id);

            Assert.Equal("Full Config", detail.Task.Name);
            Assert.Equal(4, detail.Task.CurrentStep);
            Assert.Equal((int)SceneType.Mountain, detail.Scene.SceneType);
            Assert.Equal(10.0, detail.Scene.WindSpeed);
            Assert.Equal(3, detail.Targets[0].Quantity);
            Assert.Equal((int)AerosolType.ActiveMaterial, detail.Cloud.AerosolType);
        }

        // ========== Step Save ==========

        [Fact]
        public void SaveScene_FirstTime_Inserts()
        {
            var task = _service.CreateTask("Scene Test", "");
            _service.SaveScene(task.Id, new CombatScene
            {
                WeatherType = (int)WeatherType.Fog,
                Visibility = 2000.0,
                TimeOfDay = "03:00",
            });

            var detail = _service.GetTaskDetail(task.Id);
            Assert.Equal((int)WeatherType.Fog, detail.Scene.WeatherType);
            Assert.Equal(2000.0, detail.Scene.Visibility);
            Assert.Equal("03:00", detail.Scene.TimeOfDay);
        }

        [Fact]
        public void SaveScene_SecondTime_Updates()
        {
            var task = _service.CreateTask("Update Scene", "");
            _service.SaveScene(task.Id, new CombatScene { WindSpeed = 5.0 });
            _service.SaveScene(task.Id, new CombatScene { WindSpeed = 15.0 });

            var detail = _service.GetTaskDetail(task.Id);
            Assert.Equal(15.0, detail.Scene.WindSpeed);
        }

        [Fact]
        public void SaveControlZones_SavesAndRetrieves()
        {
            var task = _service.CreateTask("Zone Test", "");
            var zones = new List<ControlZone>
            {
                new ControlZone { Name = "禁区A", VerticesJson = "[{\"x\":0,\"y\":0,\"z\":0},{\"x\":100,\"y\":0,\"z\":0},{\"x\":100,\"y\":100,\"z\":0}]", MinAltitude = 0, MaxAltitude = 500 },
                new ControlZone { Name = "禁区B", VerticesJson = "[{\"x\":200,\"y\":200,\"z\":0}]", MinAltitude = 100, MaxAltitude = 300 },
            };

            _service.SaveControlZones(task.Id, zones);

            var detail = _service.GetTaskDetail(task.Id);
            Assert.Equal(2, detail.ControlZones.Count);
            Assert.Equal("禁区A", detail.ControlZones[0].Name);
            Assert.Equal(0, detail.ControlZones[0].OrderIndex);
            Assert.Equal("禁区B", detail.ControlZones[1].Name);
            Assert.Equal(1, detail.ControlZones[1].OrderIndex);
        }

        [Fact]
        public void SaveControlZones_ReplaceExisting()
        {
            var task = _service.CreateTask("Zone Replace", "");
            _service.SaveControlZones(task.Id, new List<ControlZone>
            {
                new ControlZone { Name = "Old" }
            });
            _service.SaveControlZones(task.Id, new List<ControlZone>
            {
                new ControlZone { Name = "New1" },
                new ControlZone { Name = "New2" },
            });

            var detail = _service.GetTaskDetail(task.Id);
            Assert.Equal(2, detail.ControlZones.Count);
        }

        [Fact]
        public void SaveTarget_SavesCorrectly()
        {
            var task = _service.CreateTask("Target Test", "");
            _service.SaveTarget(task.Id, new TargetConfig
            {
                GroupId = "default",
                TargetType = (int)TargetType.Piston,
                Quantity = 5,
                PowerType = (int)PowerType.Piston,
                Wingspan = 2.5,
                TypicalSpeed = 120.0,
                TypicalAltitude = 800.0,
            });

            var detail = _service.GetTaskDetail(task.Id);
            var target = detail.Targets[0];
            Assert.Equal((int)TargetType.Piston, target.TargetType);
            Assert.Equal(5, target.Quantity);
            Assert.Equal(120.0, target.TypicalSpeed);
        }

        [Fact]
        public void SaveDeployment_SavesMultiple()
        {
            var task = _service.CreateTask("Equip Test", "");
            var equips = new List<EquipmentDeployment>
            {
                new EquipmentDeployment
                {
                    EquipmentRole = (int)EquipmentRole.LaunchPlatform,
                    PlatformType = (int)PlatformType.GroundBased,
                    Quantity = 2,
                    PositionX = 1000, PositionY = 0, PositionZ = 50,
                    MuzzleVelocity = 800.0,
                    MunitionCount = 3,
                },
                new EquipmentDeployment
                {
                    EquipmentRole = (int)EquipmentRole.Detection,
                    Quantity = 1,
                    RadarRange = 5000.0,
                },
            };

            _service.SaveDeployment(task.Id, equips);

            var detail = _service.GetTaskDetail(task.Id);
            Assert.Equal(2, detail.Equipment.Count);

            var platform = detail.Equipment.Find(e => e.EquipmentRole == (int)EquipmentRole.LaunchPlatform);
            Assert.NotNull(platform);
            Assert.Equal(2, platform.Quantity);
            Assert.Equal(800.0, platform.MuzzleVelocity);
        }

        [Fact]
        public void SaveRoute_SavesWaypoints()
        {
            var task = _service.CreateTask("Route Test", "");
            var route = new RoutePlan
            {
                FormationMode = (int)FormationMode.Formation,
                LateralSpacing = 60.0,
            };
            var waypoints = new List<Waypoint>
            {
                new Waypoint { PosX = 0, PosY = 0, PosZ = 100, Altitude = 500, Speed = 100 },
                new Waypoint { PosX = 5000, PosY = 0, PosZ = 100, Altitude = 500, Speed = 100 },
                new Waypoint { PosX = 10000, PosY = 0, PosZ = 100, Altitude = 300, Speed = 80 },
            };

            _service.SaveRoute(task.Id, "default", route, waypoints);

            var detail = _service.GetTaskDetail(task.Id);
            Assert.Equal((int)FormationMode.Formation, detail.Routes[0].FormationMode);
            Assert.Equal(3, detail.WaypointGroups["default"].Count);
            Assert.Equal(0, detail.WaypointGroups["default"][0].OrderIndex);
            Assert.Equal(2, detail.WaypointGroups["default"][2].OrderIndex);
            Assert.Equal(5000.0, detail.WaypointGroups["default"][1].PosX);
        }

        // ========== Search & Pagination ==========

        [Fact]
        public void SearchTasks_KeywordFilter()
        {
            _service.CreateTask("城市防御演习", "");
            _service.CreateTask("平原拦截测试", "");
            _service.CreateTask("海岸边防演练", "");

            var result = _service.SearchTasks("城市", null, null, 1, 10);
            Assert.Equal(1, result.TotalCount);
            Assert.Equal("城市防御演习", result.Items[0].Name);
        }

        [Fact]
        public void SearchTasks_NoResults()
        {
            _service.CreateTask("Task A", "");
            var result = _service.SearchTasks("不存在的任务", null, null, 1, 10);
            Assert.Equal(0, result.TotalCount);
        }

        [Fact]
        public void SearchTasks_Pagination()
        {
            for (int i = 0; i < 15; i++)
                _service.CreateTask($"Task {i:D2}", "");

            var page1 = _service.SearchTasks(null, null, null, 1, 5);
            Assert.Equal(15, page1.TotalCount);
            Assert.Equal(5, page1.Items.Count);
            Assert.Equal(3, page1.TotalPages);

            var page3 = _service.SearchTasks(null, null, null, 3, 5);
            Assert.Equal(5, page3.Items.Count);
        }

        [Fact]
        public void SearchTasks_DateRangeFilter()
        {
            // All tasks created today, so date filter should include them
            _service.CreateTask("Recent Task", "");

            var yesterday = DateTime.UtcNow.AddDays(-1).ToString("yyyy-MM-dd");
            var tomorrow = DateTime.UtcNow.AddDays(1).ToString("yyyy-MM-dd");

            var result = _service.SearchTasks(null, yesterday, tomorrow, 1, 10);
            Assert.Equal(1, result.TotalCount);

            var oldResult = _service.SearchTasks(null, "2020-01-01", "2020-12-31", 1, 10);
            Assert.Equal(0, oldResult.TotalCount);
        }

        // ========== UpdateStep ==========

        [Fact]
        public void UpdateStep_ValidSteps()
        {
            var task = _service.CreateTask("Step Test", "");
            Assert.Equal(1, task.CurrentStep);

            _service.UpdateStep(task.Id, 3);
            var detail = _service.GetTaskDetail(task.Id);
            Assert.Equal(3, detail.Task.CurrentStep);

            _service.UpdateStep(task.Id, 5);
            detail = _service.GetTaskDetail(task.Id);
            Assert.Equal(5, detail.Task.CurrentStep);
        }

        [Fact]
        public void UpdateStep_ClampedToRange()
        {
            var task = _service.CreateTask("Clamp Test", "");

            _service.UpdateStep(task.Id, 0);
            Assert.Equal(1, _service.GetTaskDetail(task.Id).Task.CurrentStep);

            _service.UpdateStep(task.Id, 10);
            Assert.Equal(5, _service.GetTaskDetail(task.Id).Task.CurrentStep);
        }

        // ========== Full Workflow ==========

        [Fact]
        public void FullWorkflow_CreateConfigureSearch()
        {
            // 1. 创建任务
            var task = _service.CreateTask("完整流程测试", "");
            Assert.NotNull(task);

            // 2. 步骤1：作战场景
            _service.SaveScene(task.Id, new CombatScene
            {
                SceneType = (int)SceneType.Urban,
                WeatherType = (int)WeatherType.Rain,
                WindSpeed = 8.0,
                WindDirection = (int)WindDirection.SE,
                Temperature = 18.0,
                TimeOfDay = "14:00",
            });
            _service.UpdateStep(task.Id, 1);

            // 3. 步骤1扩展：管控区域
            _service.SaveControlZones(task.Id, new List<ControlZone>
            {
                new ControlZone
                {
                    Name = "核心区",
                    VerticesJson = "[{\"x\":0,\"y\":0,\"z\":0},{\"x\":500,\"y\":0,\"z\":0},{\"x\":500,\"y\":500,\"z\":0},{\"x\":0,\"y\":500,\"z\":0}]",
                    MinAltitude = 0, MaxAltitude = 1000,
                }
            });

            // 4. 步骤2：目标配置
            _service.SaveTarget(task.Id, new TargetConfig
            {
                GroupId = "default",
                TargetType = (int)TargetType.HighSpeed,
                Quantity = 2,
                PowerType = (int)PowerType.Jet,
                TypicalSpeed = 300.0,
            });
            _service.UpdateStep(task.Id, 2);

            // 5. 步骤3：装备部署
            _service.SaveDeployment(task.Id, new List<EquipmentDeployment>
            {
                new EquipmentDeployment
                {
                    EquipmentRole = (int)EquipmentRole.Detection,
                    Quantity = 1,
                    RadarRange = 6000.0,
                },
                new EquipmentDeployment
                {
                    EquipmentRole = (int)EquipmentRole.LaunchPlatform,
                    PlatformType = (int)PlatformType.GroundBased,
                    Quantity = 3,
                    PositionX = 800, PositionY = 0, PositionZ = 50,
                    MuzzleVelocity = 850.0,
                    MunitionCount = 2,
                },
            });
            _service.UpdateStep(task.Id, 3);

            // 6. 步骤4：云团抛撒
            _service.SaveCloudDispersal(task.Id, new CloudDispersal
            {
                AerosolType = (int)AerosolType.ActiveMaterial,
                TriggerMode = (int)TriggerMode.Area,
                Duration = 50.0,
                PositionX = 3000,
                PositionY = 0,
                PositionZ = 300,
            });
            _service.UpdateStep(task.Id, 4);

            // 7. 步骤5：航路规划
            _service.SaveRoute(task.Id, "default", new RoutePlan
            {
                FormationMode = (int)FormationMode.Swarm,
                LateralSpacing = 30.0,
            }, new List<Waypoint>
            {
                new Waypoint { PosX = 0, PosY = 100, PosZ = 200, Altitude = 600, Speed = 250 },
                new Waypoint { PosX = 10000, PosY = 100, PosZ = 200, Altitude = 600, Speed = 250 },
            });
            _service.UpdateStep(task.Id, 5);

            // 8. 验证完整配置
            var detail = _service.GetTaskDetail(task.Id);

            Assert.Equal("完整流程测试", detail.Task.Name);
            Assert.Equal(5, detail.Task.CurrentStep);
            Assert.Equal((int)TaskStatus.Configuring, detail.Task.Status);

            // 场景
            Assert.Equal((int)SceneType.Urban, detail.Scene.SceneType);
            Assert.Equal((int)WeatherType.Rain, detail.Scene.WeatherType);
            Assert.Equal("14:00", detail.Scene.TimeOfDay);

            // 管控区域
            Assert.Single(detail.ControlZones);
            Assert.Equal("核心区", detail.ControlZones[0].Name);

            // 目标
            Assert.Single(detail.Targets);
            Assert.Equal(2, detail.Targets[0].Quantity);
            Assert.Equal(300.0, detail.Targets[0].TypicalSpeed);

            // 装备
            Assert.Equal(2, detail.Equipment.Count);

            // 云团
            Assert.Equal((int)AerosolType.ActiveMaterial, detail.Cloud.AerosolType);
            Assert.Equal(50.0, detail.Cloud.Duration);

            // 航路
            Assert.Equal((int)FormationMode.Swarm, detail.Routes[0].FormationMode);
            Assert.Equal(2, detail.WaypointGroups["default"].Count);
            Assert.Equal(250.0, detail.WaypointGroups["default"][0].Speed);

            // 9. 搜索验证
            var searchResult = _service.SearchTasks("完整流程", null, null, 1, 10);
            Assert.Equal(1, searchResult.TotalCount);
        }
    }
}