using System.Net.Http.Json;
using Microsoft.Extensions.Logging;

namespace Fengling.RiskControl.Application.Services;

public class MemberIntegrationService : IMemberIntegrationService
{
    private readonly HttpClient _httpClient;
    private readonly ILogger<MemberIntegrationService> _logger;

    public MemberIntegrationService(HttpClient httpClient, ILogger<MemberIntegrationService> logger)
    {
        _httpClient = httpClient;
        _logger = logger;
    }

    public async Task<int> GetMemberPointsBalanceAsync(long memberId)
    {
        try
        {
            var response = await _httpClient.GetAsync($"/api/v1/members/{memberId}/points/balance");
            if (!response.IsSuccessStatusCode)
            {
                _logger.LogWarning("Failed to get points balance for member {MemberId}: {StatusCode}",
                    memberId, response.StatusCode);
                return 0;
            }

            var result = await response.Content.ReadFromJsonAsync<PointsBalanceResponse>();
            return result?.AvailableBalance ?? 0;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Error getting points balance for member {MemberId}", memberId);
            return 0;
        }
    }

    public async Task<bool> DeductPointsAsync(long memberId, int points, string reason)
    {
        try
        {
            var response = await _httpClient.PostAsJsonAsync($"/api/v1/members/{memberId}/points/deduct", new
            {
                Points = points,
                Reason = reason
            });

            return response.IsSuccessStatusCode;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Error deducting points for member {MemberId}", memberId);
            return false;
        }
    }

    public async Task<bool> AddPointsAsync(long memberId, int points, string reason)
    {
        try
        {
            var response = await _httpClient.PostAsJsonAsync($"/api/v1/members/{memberId}/points/add", new
            {
                Points = points,
                Reason = reason
            });

            return response.IsSuccessStatusCode;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Error adding points for member {MemberId}", memberId);
            return false;
        }
    }

    public async Task<MemberInfo?> GetMemberInfoAsync(long memberId)
    {
        try
        {
            var response = await _httpClient.GetAsync($"/api/v1/members/{memberId}");
            if (!response.IsSuccessStatusCode)
                return null;

            return await response.Content.ReadFromJsonAsync<MemberInfo>();
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Error getting member info for {MemberId}", memberId);
            return null;
        }
    }
}