using Microsoft.Extensions.Options;
using MyHomePage.Api.Common;
using MyHomePage.Api.Infrastructure.Configuration;
using MyHomePage.Api.Infrastructure.Database;
using MyHomePage.Api.Services;
using SqlSugar;

var builder = WebApplication.CreateBuilder(args);

// ===== 配置节点绑定 =====
builder.Services.Configure<DatabaseOptions>(builder.Configuration.GetSection(DatabaseOptions.SectionName));
builder.Services.Configure<UploadOptions>(builder.Configuration.GetSection(UploadOptions.SectionName));
builder.Services.Configure<CorsOptions>(builder.Configuration.GetSection(CorsOptions.SectionName));

// ===== 控制器 =====
builder.Services.AddControllers()
    .AddJsonOptions(o =>
    {
        // 前端约定使用 camelCase
        o.JsonSerializerOptions.PropertyNamingPolicy = System.Text.Json.JsonNamingPolicy.CamelCase;
        o.JsonSerializerOptions.DictionaryKeyPolicy = System.Text.Json.JsonNamingPolicy.CamelCase;
    });

// ===== Swagger / OpenAPI =====
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new() { Title = "MyHomePage API", Version = "v1" });
    // 注意：API 全部返回 ApiResponse<T>，类型签名会进 swagger
    c.CustomOperationIds(apiDesc =>
    {
        // Controller Action 有 action 键，minimal API（MapGet / MapPost 等）没有
        // 用 TryGetValue 防御，避免 KeyNotFoundException 启动崩
        var routeValues = apiDesc.ActionDescriptor.RouteValues;
        if (routeValues.TryGetValue("action", out var action)
            && !string.IsNullOrEmpty(action)
            && routeValues.TryGetValue("controller", out var controller)
            && !string.IsNullOrEmpty(controller))
        {
            return $"{controller}_{action}";
        }
        // minimal API 兜底：用路由模板做 operationId（去掉 / 和特殊字符）
        // 例：/health → health；/api/wallpaper/random → api_wallpaper_random
        return apiDesc.RelativePath?
            .Replace("/", "_", StringComparison.Ordinal)
            .Trim('_')
            ?? "UnknownEndpoint";
    });
});

// ===== CORS =====
var corsOrigins = builder.Configuration.GetSection("Cors:Origins").Get<string[]>() ?? Array.Empty<string>();
builder.Services.AddCors(o => o.AddDefaultPolicy(p =>
{
    if (corsOrigins.Length > 0)
        p.WithOrigins(corsOrigins).AllowAnyHeader().AllowAnyMethod().AllowCredentials();
    else
        p.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod();
}));

// ===== SqlSugar 单例 =====
builder.Services.AddSingleton<SqlSugarContext>();

// ===== 服务依赖注入 =====
builder.Services.AddScoped<SyncLogHelper>();
builder.Services.AddScoped<ISqlSugarClient>(sp => sp.GetRequiredService<SqlSugarContext>().Db);
builder.Services.AddScoped<ICategoryService, CategoryService>();
builder.Services.AddScoped<IBookmarkService, BookmarkService>();
builder.Services.AddScoped<ISearchEngineService, SearchEngineService>();
builder.Services.AddScoped<ISettingService, SettingService>();
builder.Services.AddScoped<IUploadService, UploadService>();
builder.Services.AddScoped<ISyncService, SyncService>();
builder.Services.AddScoped<DatabaseInitializer>();

// ===== P31：favicon 自动抓取 =====
builder.Services.AddMemoryCache();                                              // IMemoryCache（24h 缓存已抓 favicon，Singleton）
builder.Services.AddHttpClient(nameof(FaviconService), c =>                     // 命名 HttpClient（IHttpClientFactory 管理生命周期）
{
    c.Timeout = TimeSpan.FromSeconds(5);                                         // 全局 5s 超时（个别 GET 还会二次限制）
    c.DefaultRequestHeaders.Add("User-Agent",
        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36");
});
builder.Services.AddScoped<FaviconService>();                                    // 注入 IHttpClientFactory + IMemoryCache

// ===== P34：360 在线壁纸代理 =====
builder.Services.AddHttpClient(nameof(WallpaperService), c =>
{
    c.Timeout = TimeSpan.FromSeconds(10);                                        // 拉分类 / 200 张池子给 10s 充裕
    c.DefaultRequestHeaders.Add("User-Agent",
        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36");
});
builder.Services.AddScoped<WallpaperService>();

// ===== 上传文件大小限制 =====
var maxUpload = builder.Configuration.GetValue<long?>("Upload:MaxSizeBytes") ?? 10L * 1024 * 1024;
builder.Services.Configure<Microsoft.AspNetCore.Http.Features.FormOptions>(o =>
{
    o.MultipartBodyLengthLimit = maxUpload;
});
builder.WebHost.ConfigureKestrel(o => o.Limits.MaxRequestBodySize = maxUpload);

var app = builder.Build();

// ===== 启动时初始化数据库（CodeFirst + 种子） =====
using (var scope = app.Services.CreateScope())
{
    var initializer = scope.ServiceProvider.GetRequiredService<DatabaseInitializer>();
    await initializer.InitializeAsync();
}

// ===== HTTP Pipeline =====
app.UseMiddleware<ExceptionHandlingMiddleware>();

// 静态文件：暴露 Upload 目录
var uploadPath = Path.IsPathRooted(app.Configuration["Upload:Path"] ?? "Uploads")
    ? app.Configuration["Upload:Path"]!
    : Path.Combine(app.Environment.ContentRootPath, app.Configuration["Upload:Path"] ?? "Uploads");
Directory.CreateDirectory(uploadPath);
app.UseStaticFiles(new Microsoft.AspNetCore.Builder.StaticFileOptions
{
    FileProvider = new Microsoft.Extensions.FileProviders.PhysicalFileProvider(uploadPath),
    RequestPath = app.Configuration["Upload:BaseUrl"] ?? "/uploads",
    ServeUnknownFileTypes = true
});

if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseCors();
app.UseAuthorization();
app.MapControllers();

// 根路径健康检查
app.MapGet("/", () => Results.Ok(new { name = "MyHomePage API", version = "1.0.0", status = "ok" }));
app.MapGet("/health", () => Results.Ok(new { status = "ok", time = DateTimeOffset.UtcNow }));

app.Run();