using System.Text.Json;
using System.Text.Json.Nodes;
using FsTool;
using FsTool.Helpers;

namespace FsTool.Tasks
{
    public partial class RegionTasks
    {
        /// <summary>
        ///     Retrieves all stores within the specified region, ensuring the request is authenticated.
        /// </summary>
        /// <param name="httpClient">The HTTP client used to perform the request.</param>
        /// <param name="regionId">The region identifier to query.</param>
        /// <returns>A list of stores, or an empty list when the call fails or returns no data.</returns>
        public static async Task<List<Store>> GetStoresInRegionAsync(HttpClient httpClient, int regionId)
        {
            await AuthHelper.EnsureAuthenticationAsync(httpClient);

            var uri = string.Format(Endpoints.RegionStores, regionId);
            var response = await httpClient.GetAsync(uri);
            var responseBody = await response.Content.ReadAsStringAsync();

            // handle unsuccessful response
            if (!response.IsSuccessStatusCode)
            {
                await Console.Error.WriteLineAsync($"Region stores retrieval failed ({(int)response.StatusCode} {response.ReasonPhrase}): {responseBody}");
                return [];
            }

            Console.WriteLine($"Stores in region {regionId}:");
            Console.WriteLine(responseBody);

            var root = JsonNode.Parse(responseBody);
            if (root == null) return [];

            // Deserialize JsonNode to List<Pickup>
            var opts = new JsonSerializerOptions
            {
                PropertyNameCaseInsensitive = true,
                PropertyNamingPolicy = null     // <── WICHTIG
            };

            return root["stores"].Deserialize<List<Store>>(opts) ?? [];
        }
    }
}