namespace TaxBaik.Web.Services.AdminClients;

using System.Text.Json;
using TaxBaik.Domain.Entities;

public interface IRevenueTrackingBrowserClient
{
    Task<List<RevenueTracking>> GetAllAsync(CancellationToken ct = default);
    Task<List<RevenueTracking>> GetByClientIdAsync(int clientId, CancellationToken ct = default);
    Task<List<RevenueTracking>> GetPendingPaymentsAsync(CancellationToken ct = default);
    Task<List<RevenueTracking>> GetMonthlyRevenueAsync(int year, int month, CancellationToken ct = default);
    Task<decimal> GetTotalRevenueAsync(DateTime startDate, DateTime endDate, CancellationToken ct = default);
    Task<int> CreateAsync(int clientId, string invoiceNumber, DateTime invoiceDate, decimal amount,
        string? serviceType = null, DateTime? dueDate = null, CancellationToken ct = default);
    Task MarkPaidAsync(int id, DateTime paymentDate, CancellationToken ct = default);
    Task DeleteAsync(int id, CancellationToken ct = default);
}

public class RevenueTrackingBrowserClient(HttpClient httpClient, ITokenStore tokenStore, ILogger<RevenueTrackingBrowserClient> logger)
    : IRevenueTrackingBrowserClient
{
    private const string BaseUrl = "/api/revenuetracking";

    private void EnsureAuthHeader()
    {
        if (!string.IsNullOrEmpty(tokenStore.AccessToken))
            httpClient.DefaultRequestHeaders.Authorization = new("Bearer", tokenStore.AccessToken);
        else
            httpClient.DefaultRequestHeaders.Authorization = null;
    }

    public async Task<List<RevenueTracking>> GetAllAsync(CancellationToken ct = default)
    {
        try
        {
            EnsureAuthHeader();
            return await httpClient.GetFromJsonAsync<List<RevenueTracking>>($"{BaseUrl}", ct) ?? [];
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "Failed to get revenue tracking");
            return [];
        }
    }

    public async Task<List<RevenueTracking>> GetByClientIdAsync(int clientId, CancellationToken ct = default)
    {
        try
        {
            EnsureAuthHeader();
            return await httpClient.GetFromJsonAsync<List<RevenueTracking>>($"{BaseUrl}/client/{clientId}", ct) ?? [];
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "Failed to get revenue for client {ClientId}", clientId);
            return [];
        }
    }

    public async Task<List<RevenueTracking>> GetPendingPaymentsAsync(CancellationToken ct = default)
    {
        try
        {
            EnsureAuthHeader();
            var response = await httpClient.GetFromJsonAsync<JsonElement>($"{BaseUrl}/pending", ct);
            if (response.TryGetProperty("data", out var data))
                return System.Text.Json.JsonSerializer.Deserialize<List<RevenueTracking>>(data.GetRawText()) ?? [];
            return [];
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "Failed to get pending payments");
            return [];
        }
    }

    public async Task<List<RevenueTracking>> GetMonthlyRevenueAsync(int year, int month, CancellationToken ct = default)
    {
        try
        {
            EnsureAuthHeader();
            var response = await httpClient.GetFromJsonAsync<JsonElement>($"{BaseUrl}/monthly?year={year}&month={month}", ct);
            if (response.TryGetProperty("data", out var data))
                return System.Text.Json.JsonSerializer.Deserialize<List<RevenueTracking>>(data.GetRawText()) ?? [];
            return [];
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "Failed to get monthly revenue {Year}-{Month}", year, month);
            return [];
        }
    }

    public async Task<decimal> GetTotalRevenueAsync(DateTime startDate, DateTime endDate, CancellationToken ct = default)
    {
        try
        {
            EnsureAuthHeader();
            var response = await httpClient.GetFromJsonAsync<JsonElement>(
                $"{BaseUrl}/total?startDate={startDate:yyyy-MM-dd}&endDate={endDate:yyyy-MM-dd}", ct);
            if (response.TryGetProperty("total", out var totalValue))
                return System.Text.Json.JsonSerializer.Deserialize<decimal>(totalValue.GetRawText());
            return 0;
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "Failed to get total revenue");
            return 0;
        }
    }

    public async Task<int> CreateAsync(int clientId, string invoiceNumber, DateTime invoiceDate, decimal amount,
        string? serviceType = null, DateTime? dueDate = null, CancellationToken ct = default)
    {
        try
        {
            EnsureAuthHeader();
            var request = new { clientId, invoiceNumber, invoiceDate, amount, serviceType, dueDate };
            var response = await httpClient.PostAsJsonAsync(BaseUrl, request, ct);
            response.EnsureSuccessStatusCode();
            var result = await response.Content.ReadFromJsonAsync<JsonElement>(cancellationToken: ct);
            return result.TryGetProperty("id", out var idProp) ? idProp.GetInt32() : 0;
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "Failed to create revenue tracking");
            return 0;
        }
    }

    public async Task MarkPaidAsync(int id, DateTime paymentDate, CancellationToken ct = default)
    {
        try
        {
            EnsureAuthHeader();
            var request = new { paymentDate };
            var response = await httpClient.PutAsJsonAsync($"{BaseUrl}/{id}/paid", request, ct);
            response.EnsureSuccessStatusCode();
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "Failed to mark payment {Id}", id);
        }
    }

    public async Task DeleteAsync(int id, CancellationToken ct = default)
    {
        try
        {
            EnsureAuthHeader();
            var response = await httpClient.DeleteAsync($"{BaseUrl}/{id}", ct);
            response.EnsureSuccessStatusCode();
        }
        catch (Exception ex)
        {
            logger.LogError(ex, "Failed to delete revenue tracking {Id}", id);
        }
    }
}
