using System.IO;
using System.Text.Json;
using OneClickRun.Models;
using OneClickRun.Services;
using Xunit;

namespace OneClickRun.Tests;

public class ConfigServiceTests
{
    private static string NewTempDir() =>
        Path.Combine(Path.GetTempPath(), "OneClickRunTests", Guid.NewGuid().ToString("N"));

    [Fact]
    public void SaveAndLoadRoundTrip()
    {
        var dir = NewTempDir();
        try
        {
            var service = new ConfigService(dir);
            service.Load(); // 首次运行生成默认配置
            Assert.True(service.WasFirstRun);
            Assert.Equal(4, service.Current.Items.Count);

            service.Current.General.Theme = ThemeMode.Dark;
            service.Current.General.TriggerMode = TriggerMode.Hold;
            service.Current.General.SelectionMode = SelectionMode.Swipe;
            service.Current.General.Hotkey = new HotkeyBinding { Modifiers = { "Ctrl", "Shift" }, Key = "F9" };
            service.Current.Items[0].Name = "改名后的指令";
            service.Save();

            var reloaded = new ConfigService(dir);
            reloaded.Load();
            Assert.False(reloaded.WasFirstRun);
            Assert.Equal(ThemeMode.Dark, reloaded.Current.General.Theme);
            Assert.Equal(TriggerMode.Hold, reloaded.Current.General.TriggerMode);
            Assert.Equal(SelectionMode.Swipe, reloaded.Current.General.SelectionMode);
            Assert.Equal("Ctrl+Shift+F9", reloaded.Current.General.HotkeyText);
            Assert.Equal("改名后的指令", reloaded.Current.Items[0].Name);
            Assert.Equal(service.Current.Items.Count, reloaded.Current.Items.Count);
        }
        finally
        {
            try { Directory.Delete(dir, recursive: true); } catch { }
        }
    }

    [Fact]
    public void CorruptConfigIsBackedUpAndRebuilt()
    {
        var dir = NewTempDir();
        try
        {
            Directory.CreateDirectory(dir);
            var path = Path.Combine(dir, "config.json");
            File.WriteAllText(path, "{ 这不是合法的 JSON");

            var service = new ConfigService(dir);
            service.Load();

            Assert.True(File.Exists(path));
            Assert.Contains("\"General\"", File.ReadAllText(path));
            Assert.Single(Directory.GetFiles(dir, "config.broken-*.json"));
            Assert.True(service.WasFirstRun);
            Assert.NotNull(service.Current.General);
            Assert.NotNull(service.Current.Items);
        }
        finally
        {
            try { Directory.Delete(dir, recursive: true); } catch { }
        }
    }

    [Fact]
    public void MissingFieldsAreRepaired()
    {
        var dir = NewTempDir();
        try
        {
            Directory.CreateDirectory(dir);
            // General 缺失、Items 缺失、item 内字段缺失
            var json = JsonSerializer.Serialize(new { version = 1 });
            File.WriteAllText(Path.Combine(dir, "config.json"), json);

            var service = new ConfigService(dir);
            service.Load();

            Assert.False(service.WasFirstRun);
            Assert.NotNull(service.Current.General);
            Assert.NotNull(service.Current.General.Hotkey);
            Assert.Empty(service.Current.Items);
        }
        finally
        {
            try { Directory.Delete(dir, recursive: true); } catch { }
        }
    }

    [Fact]
    public void EnumValuesAreSerializedAsStrings()
    {
        var service = new ConfigService(NewTempDir());
        service.Load();
        service.Current.General.Theme = ThemeMode.System;
        service.Current.Items.Add(new WheelItem { Type = WheelItemType.Script, Name = "测试", Path = "a.ps1" });
        service.Save();

        var json = File.ReadAllText(service.ConfigPath);
        Assert.Contains("\"System\"", json);
        Assert.Contains("\"Script\"", json);
        try { Directory.Delete(service.ConfigDirectory, recursive: true); } catch { }
    }
}