using System.Net.Http;
using System.Threading.Tasks;
using Microsoft.Extensions.Options;
using Novaloop.PaymoApi.Extensions;

namespace Novaloop.PaymoApi.Shared
{
    public class BaseApi<TReturnType, TCreatType> : IBaseApi<TReturnType, TCreatType>
    {
        public string ResourceUri { get; set; }
        private readonly ApiOptions _options;
        private readonly HttpClient _client;

        public BaseApi(ApiClient apiClient, IOptions<ApiOptions> options)
        {
            _options = options.Value;
            _client = apiClient.Client;
        }

        /// <summary>
        /// Receive all entities
        /// </summary>
        public async Task<TReturnType> GetAll()
        {
            _client.SetApiKeyHeader(_options.ApiToken);
            var response = await _client.GetAsync($"api/{ResourceUri}");
            await response.ThrowExceptionWithDetailsIfUnsuccessful();
            return await response.Content.ReadAsAsync<TReturnType>();
        }

        /// <summary>
        /// Retrieve an existing entity
        /// </summary>
        /// <param name="entityId">id of the entity</param>
        /// <returns></returns>
        public async Task<TReturnType> Get(int entityId)
        {
            _client.SetApiKeyHeader(_options.ApiToken);
            var response = await _client.GetAsync($"api/{ResourceUri}/{entityId}");
            await response.ThrowExceptionWithDetailsIfUnsuccessful();
            return await response.Content.ReadAsAsync<TReturnType>();
        }

        /// <summary>
        /// Create a new entity
        /// </summary>
        public async Task<TReturnType> Create(TCreatType entity)
        {
            _client.SetApiKeyHeader(_options.ApiToken);
            var response = await _client.PostAsJsonAsync($"api/{ResourceUri}", entity);
            await response.ThrowExceptionWithDetailsIfUnsuccessful();
            return await response.Content.ReadAsAsync<TReturnType>();
        }

        /// <summary>
        /// Delete an entity
        /// </summary>
        /// <param name="entityId">id of the entity</param>
        /// <returns></returns>
        public async Task Delete(int entityId)
        {
            _client.SetApiKeyHeader(_options.ApiToken);
            var response = await _client.DeleteAsync($"api/{ResourceUri}/{entityId}");
            await response.ThrowExceptionWithDetailsIfUnsuccessful();
        }

        /// <summary>
        /// Update an entity
        /// </summary>
        /// <param name="entity">entity information to update the entity with</param>
        /// <param name="id">id of the entity to update</param>
        /// <returns></returns>
        public async Task Update(TCreatType entity, int id)
        {
            _client.SetApiKeyHeader(_options.ApiToken);
            var response = await _client.PutAsJsonAsync($"api/{ResourceUri}/{id}", entity);
            await response.ThrowExceptionWithDetailsIfUnsuccessful();
        }
    }
}