using Mapster;
using Microsoft.EntityFrameworkCore;
using Persistence.Database.Model;
using Persistence.Models;
using Persistence.Repositories;

namespace Persistence.Repository.Repositories;
public class TimeSeriesDataRepository<TEntity, TDto> : ITimeSeriesDataRepository<TDto>
    where TEntity : class, ITimestampedData, new()
    where TDto : class, ITimeSeriesAbstractDto, new()
{
    private DbContext db;

    public TimeSeriesDataRepository(DbContext db)
    {
        this.db = db;
    }

    protected virtual IQueryable<TEntity> GetQueryReadOnly() => this.db.Set<TEntity>();

    public async Task<IEnumerable<TDto>> GetAsync(DateTimeOffset dateBegin, DateTimeOffset dateEnd, CancellationToken token)
    {
        var query = GetQueryReadOnly();
        var entities = await query.ToArrayAsync(token);
        var dtos = entities.Select(e => e.Adapt<TDto>());

        return dtos;
    }

    public async Task<DatesRangeDto> GetDatesRangeAsync(CancellationToken token)
    {
        var query = GetQueryReadOnly();
        var minDate = await query.MinAsync(o => o.Date, token);
        var maxDate = await query.MaxAsync(o => o.Date, token);

        return new DatesRangeDto
        {
            From = minDate,
            To = maxDate
        };
    }

    public async Task<IEnumerable<TDto>> GetGtDate(DateTimeOffset date, CancellationToken token)
    {
        var query = this.db.Set<TEntity>().Where(e => e.Date > date);
        var entities = await query.ToArrayAsync(token);

        var dtos = entities.Select(e => e.Adapt<TDto>());

        return dtos;
    }

    public async Task<int> InsertRange(IEnumerable<TDto> dtos, CancellationToken token)
    {
        var entities = dtos.Select(d => d.Adapt<TEntity>());

        await db.Set<TEntity>().AddRangeAsync(entities, token);
        var result = await db.SaveChangesAsync(token);

        return result;
    }
}