using Castle.Core.Logging;

namespace Pilz.Net.Api;

public class ApiClient(string apiUrl) : IApiClient
{
    protected readonly HttpClient httpClient = new();

    public virtual string ApiUrl { get; } = apiUrl;

    public string? AuthKey { get; set; }

    public virtual IMessageSerializer Serializer { get; set; } = new DefaultMessageSerializer();

    public ILogger Log { get; set; } = NullLogger.Instance;

    public virtual async Task<ApiResponse> SendMessage<TResponse>(string route, ApiMessage message, IMessageSerializer? serializer = null)
    {
        serializer ??= Serializer;

        Log.InfoFormat("Send message to {0}", route);

        var res = await Send(route, message, serializer);

        return new(res.StatusCode);
    }

    public virtual async Task<ApiResponse<TResponse>> SendRequest<TResponse>(string route, ApiMessage message, IMessageSerializer? serializer = null) where TResponse : ApiMessage
    {
        serializer ??= Serializer;

        Log.InfoFormat("Send request to {0}", route);
        
        var res = await Send(route, message, serializer);
        TResponse? result = null;

        if (res.IsSuccessStatusCode)
            result = serializer.Deserialize(await res.Content.ReadAsStringAsync(), typeof(TResponse)) as TResponse;

        return new(res.StatusCode, result);
    }

    protected virtual async Task<HttpResponseMessage> Send(string route, ApiMessage message, IMessageSerializer serializer)
    {
        var url = ApiUrl + route;
        var content = new StringContent(serializer.Serialize(message)!, null, "application/json");
        content.Headers.Add("API-AUTH-KEY", EncodeAuthKey());
        return await httpClient.PostAsync(url, content);
    }

    protected virtual string? EncodeAuthKey()
    {
        return AuthKey;
    }
}