using System.Text.Json;
using SteamTimeQuery;

string configFile = "config.json";
AppConfig config;

if (!File.Exists(configFile))
{
    Console.WriteLine("初次运行，请输入运行端口 (默认 5000):");
    string? portInput = Console.ReadLine();
    int port = 5000;
    if (!string.IsNullOrWhiteSpace(portInput) && int.TryParse(portInput, out int p))
    {
        port = p;
    }
    
    config = new AppConfig
    {
        Port = port,
        ApiKey = "" // 请在 config.json 中配置 Steam Web API Key
    };

    var options = new JsonSerializerOptions { WriteIndented = true };
    File.WriteAllText(configFile, JsonSerializer.Serialize(config, options));
    Console.WriteLine($"配置已保存到 {configFile}");
}
else
{
    string json = File.ReadAllText(configFile);
    config = JsonSerializer.Deserialize<AppConfig>(json) ?? new AppConfig();
}

var builder = WebApplication.CreateBuilder(args);
builder.WebHost.UseUrls($"http://*:{config.Port}");
builder.Services.AddHttpClient();

var app = builder.Build();

app.MapGet("/api/playtime", async (string steamid, IHttpClientFactory clientFactory) =>
{
    if (string.IsNullOrEmpty(steamid)) return Results.BadRequest("steamid is required");

    string apiKey = config.ApiKey; 
    string appId = "393380"; // Squad

    var client = clientFactory.CreateClient();
    client.Timeout = TimeSpan.FromSeconds(10);

    // 1. Get Nickname (GetPlayerSummaries)
    string summaryUrl = $"http://api.steampowered.com/ISteamUser/GetPlayerSummaries/v0002/?key={apiKey}&steamids={steamid}";
    string nickname = "Unknown";
    string avatar = "";

    try 
    {
        var summaryResp = await client.GetAsync(summaryUrl);
        if (summaryResp.IsSuccessStatusCode)
        {
            var json = await summaryResp.Content.ReadAsStringAsync();
            using var doc = JsonDocument.Parse(json);
            if (doc.RootElement.TryGetProperty("response", out var resp) && 
                resp.TryGetProperty("players", out var players) && 
                players.GetArrayLength() > 0)
            {
                var player = players[0];
                if (player.TryGetProperty("personaname", out var nameProp)) nickname = nameProp.GetString() ?? "Unknown";
                if (player.TryGetProperty("avatarfull", out var avatarProp)) avatar = avatarProp.GetString() ?? "";
            }
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine($"Error fetching summary: {ex.Message}");
    }

    // 2. Get Playtime (GetOwnedGames)
    string gamesUrl = $"http://api.steampowered.com/IPlayerService/GetOwnedGames/v1/?key={apiKey}&steamid={steamid}&format=json&appids_filter[0]={appId}";
    int minutes = 0;

    try
    {
        var gamesResp = await client.GetAsync(gamesUrl);
        if (gamesResp.IsSuccessStatusCode)
        {
            var json = await gamesResp.Content.ReadAsStringAsync();
            using var doc = JsonDocument.Parse(json);
            if (doc.RootElement.TryGetProperty("response", out var resp) && 
                resp.TryGetProperty("games", out var games) && 
                games.GetArrayLength() > 0)
            {
                minutes = games[0].GetProperty("playtime_forever").GetInt32();
            }
        }
    }
    catch (Exception ex)
    {
        Console.WriteLine($"Error fetching games: {ex.Message}");
    }

    return Results.Json(new { 
        steamId = steamid,
        nickname = nickname,
        total_minutes = minutes,
        minutes = minutes,
        playtime = minutes,
        hours = minutes / 60,
        avatar = avatar
    });
});

app.Run();