using System.Linq;
using Microsoft.EntityFrameworkCore;
using TakeoutSaaS.Domain.Deliveries.Entities;
using TakeoutSaaS.Domain.Deliveries.Repositories;
using TakeoutSaaS.Infrastructure.App.Persistence;

namespace TakeoutSaaS.Infrastructure.App.Repositories;

/// <summary>
/// 配送聚合的 EF Core 仓储实现。
/// </summary>
public sealed class EfDeliveryRepository : IDeliveryRepository
{
    private readonly TakeoutAppDbContext _context;

    /// <summary>
    /// 初始化仓储。
    /// </summary>
    public EfDeliveryRepository(TakeoutAppDbContext context)
    {
        _context = context;
    }

    /// <inheritdoc />
    public Task<DeliveryOrder?> FindByIdAsync(long deliveryOrderId, long tenantId, CancellationToken cancellationToken = default)
    {
        return _context.DeliveryOrders
            .AsNoTracking()
            .Where(x => x.TenantId == tenantId && x.Id == deliveryOrderId)
            .FirstOrDefaultAsync(cancellationToken);
    }

    /// <inheritdoc />
    public Task<DeliveryOrder?> FindByOrderIdAsync(long orderId, long tenantId, CancellationToken cancellationToken = default)
    {
        return _context.DeliveryOrders
            .AsNoTracking()
            .Where(x => x.TenantId == tenantId && x.OrderId == orderId)
            .FirstOrDefaultAsync(cancellationToken);
    }

    /// <inheritdoc />
    public async Task<IReadOnlyList<DeliveryEvent>> GetEventsAsync(long deliveryOrderId, long tenantId, CancellationToken cancellationToken = default)
    {
        var events = await _context.DeliveryEvents
            .AsNoTracking()
            .Where(x => x.TenantId == tenantId && x.DeliveryOrderId == deliveryOrderId)
            .OrderBy(x => x.CreatedAt)
            .ToListAsync(cancellationToken);

        return events;
    }

    /// <inheritdoc />
    public Task AddDeliveryOrderAsync(DeliveryOrder deliveryOrder, CancellationToken cancellationToken = default)
    {
        return _context.DeliveryOrders.AddAsync(deliveryOrder, cancellationToken).AsTask();
    }

    /// <inheritdoc />
    public Task AddEventAsync(DeliveryEvent deliveryEvent, CancellationToken cancellationToken = default)
    {
        return _context.DeliveryEvents.AddAsync(deliveryEvent, cancellationToken).AsTask();
    }

    /// <inheritdoc />
    public Task SaveChangesAsync(CancellationToken cancellationToken = default)
    {
        return _context.SaveChangesAsync(cancellationToken);
    }
}