using MyHomePage.Api.Common;
using MyHomePage.Api.Models.Dtos;
using MyHomePage.Api.Models.Entities;
using SqlSugar;

namespace MyHomePage.Api.Services;

/// <inheritdoc />
public class SettingService : ISettingService
{
    private const int DefaultId = 1;
    private static readonly HashSet<string> AllowedThemeModes = new(StringComparer.OrdinalIgnoreCase) { "dark", "light", "auto" };
    private static readonly HashSet<string> AllowedBackgroundTypes = new(StringComparer.OrdinalIgnoreCase) { "preset", "custom", "solid" };
    // ===== P34 360 壁纸切换间隔合法值（分钟）=====
    private static readonly HashSet<int> AllowedWallpaperIntervals = new() { 0, 1, 5, 15, 30, 60 };

    private readonly ISqlSugarClient _db;
    private readonly SyncLogHelper _sync;

    public SettingService(ISqlSugarClient db, SyncLogHelper sync)
    {
        _db = db;
        _sync = sync;
    }

    /// <inheritdoc />
    public async Task<SettingDto> GetAsync()
    {
        var entity = await _db.Queryable<Setting>().InSingleAsync(DefaultId);
        if (entity is null)
        {
            // 兜底：写入默认值
            entity = new Setting { Id = DefaultId };
            await _db.Insertable(entity).ExecuteCommandAsync();
        }
        return ToDto(entity);
    }

    /// <inheritdoc />
    public async Task<SettingDto> UpdateAsync(SettingUpdateRequest request)
    {
        var entity = await _db.Queryable<Setting>().InSingleAsync(DefaultId);
        if (entity is null)
        {
            entity = new Setting { Id = DefaultId };
            await _db.Insertable(entity).ExecuteCommandAsync();
        }

        if (!string.IsNullOrEmpty(request.ThemeMode))
        {
            if (!AllowedThemeModes.Contains(request.ThemeMode)) throw new BusinessException("不支持的主题模式", 400);
            entity.ThemeMode = request.ThemeMode;
        }
        if (!string.IsNullOrEmpty(request.AccentColor))
        {
            if (request.AccentColor.Length > 16) throw new BusinessException("主色调格式错误", 400);
            entity.AccentColor = request.AccentColor;
        }
        if (request.BackgroundImage is not null) entity.BackgroundImage = request.BackgroundImage;
        if (!string.IsNullOrEmpty(request.BackgroundType))
        {
            if (!AllowedBackgroundTypes.Contains(request.BackgroundType)) throw new BusinessException("不支持的背景类型", 400);
            entity.BackgroundType = request.BackgroundType;
        }
        if (request.OpenLinksInNewTab.HasValue) entity.OpenLinksInNewTab = request.OpenLinksInNewTab.Value ? 1 : 0;
        if (request.OpenSearchInNewTab.HasValue) entity.OpenSearchInNewTab = request.OpenSearchInNewTab.Value ? 1 : 0;

        // ===== P34 360 壁纸模式 =====
        if (request.WallpaperEnabled.HasValue) entity.WallpaperEnabled = request.WallpaperEnabled.Value ? 1 : 0;
        if (request.WallpaperCategoryId is not null) entity.WallpaperCategoryId = request.WallpaperCategoryId;
        if (request.WallpaperInterval.HasValue)
        {
            if (!AllowedWallpaperIntervals.Contains(request.WallpaperInterval.Value))
                throw new BusinessException("不支持的壁纸切换间隔（允许：0/1/5/15/30/60 分钟）", 400);
            entity.WallpaperInterval = request.WallpaperInterval.Value;
        }

        entity.UpdatedAt = DateTime.UtcNow;

        await _db.Updateable(entity).ExecuteCommandAsync();
        await _sync.WriteAsync("setting", entity.Id, "update");
        return ToDto(entity);
    }

  private static SettingDto ToDto(Setting s) => SettingDto.FromEntity(s);}