using System.Linq.Expressions;
using SJZY.Track.Domain.Queries;
using SJZY.Track.Domain.SeedWork;

namespace SJZY.Track.Repository.Queries;

/// <summary>
/// basic queries
/// </summary>
/// <typeparam name="T"></typeparam>
public class BasicQuery<T> : SimpleClient<T>, IBasicQuery<T> where T : class, IEntity, new()
{
    /// <inheritdoc />
    public BasicQuery()
    {
        Context = SqlsugarScopeBasic.GetContextSafely("default");
    }

    /// <inheritdoc />
    public async Task<TResult?> GetFirstAsync<TResult>(Expression<Func<T, bool>> whereExpression,
        Expression<Func<T, TResult>> resultExpression)
    {
        return await Context.Queryable<T>().Where(whereExpression).Select(resultExpression).FirstAsync();
    }

    /// <inheritdoc />
    public async Task<List<TResult>> GetListAsync<TResult>(Expression<Func<T, bool>> whereExpression,
        Expression<Func<T, TResult>> resultExpression)
    {
        return await Context.Queryable<T>().Where(whereExpression).Select(resultExpression).ToListAsync();
    }

    /// <inheritdoc />
    public async Task<TResult[]> GetArrayAsync<TResult>(Expression<Func<T, bool>> whereExpression,
        Expression<Func<T, TResult>> resultExpression)
    {
        return await Context.Queryable<T>().Where(whereExpression).Select(resultExpression).ToArrayAsync();
    }
}