using System.Data;
using Dapper;
using SIGCM.Application.DTOs;
using SIGCM.Domain.Entities;
using SIGCM.Domain.Interfaces;
using SIGCM.Infrastructure.Data;

namespace SIGCM.Infrastructure.Repositories;

public class ListingRepository : IListingRepository
{
    private readonly IDbConnectionFactory _connectionFactory;

    public ListingRepository(IDbConnectionFactory connectionFactory)
    {
        _connectionFactory = connectionFactory;
    }

    public async Task<int> CreateAsync(Listing listing, Dictionary<int, string> attributes)
    {
        using var conn = _connectionFactory.CreateConnection();
        conn.Open();
        using var transaction = conn.BeginTransaction();

        try
        {
            var sqlListing = @"
                INSERT INTO Listings (
                    CategoryId, OperationId, Title, Description, Price, Currency, 
                    CreatedAt, Status, UserId, PrintText, PrintStartDate, PrintDaysCount,
                    IsBold, IsFrame, PrintFontSize, PrintAlignment
                )
                VALUES (
                    @CategoryId, @OperationId, @Title, @Description, @Price, @Currency, 
                    @CreatedAt, @Status, @UserId, @PrintText, @PrintStartDate, @PrintDaysCount,
                    @IsBold, @IsFrame, @PrintFontSize, @PrintAlignment
                );
                SELECT CAST(SCOPE_IDENTITY() as int);";

            var listingId = await conn.QuerySingleAsync<int>(sqlListing, listing, transaction);

            if (attributes != null && attributes.Any())
            {
                var sqlAttr = @"
                    INSERT INTO ListingAttributeValues (ListingId, AttributeDefinitionId, Value)
                    VALUES (@ListingId, @AttributeDefinitionId, @Value)";

                foreach (var attr in attributes)
                {
                    await conn.ExecuteAsync(sqlAttr, new { ListingId = listingId, AttributeDefinitionId = attr.Key, Value = attr.Value }, transaction);
                }
            }

            transaction.Commit();
            return listingId;
        }
        catch
        {
            transaction.Rollback();
            throw;
        }
    }

    public async Task<Listing?> GetByIdAsync(int id)
    {
        using var conn = _connectionFactory.CreateConnection();
        return await conn.QuerySingleOrDefaultAsync<Listing>("SELECT * FROM Listings WHERE Id = @Id", new { Id = id });
    }

    public async Task<SIGCM.Domain.Models.ListingDetail?> GetDetailByIdAsync(int id)
    {
        using var conn = _connectionFactory.CreateConnection();
        var sql = @"
            SELECT * FROM Listings WHERE Id = @Id;
            
            SELECT lav.*, ad.Name as AttributeName 
            FROM ListingAttributeValues lav
            JOIN AttributeDefinitions ad ON lav.AttributeDefinitionId = ad.Id
            WHERE lav.ListingId = @Id;

            SELECT * FROM ListingImages WHERE ListingId = @Id ORDER BY DisplayOrder;
        ";

        using var multi = await conn.QueryMultipleAsync(sql, new { Id = id });
        var listing = await multi.ReadSingleOrDefaultAsync<Listing>();
        if (listing == null) return null;

        var attributes = await multi.ReadAsync<SIGCM.Domain.Models.ListingAttributeValueWithName>();
        var images = await multi.ReadAsync<ListingImage>();

        return new SIGCM.Domain.Models.ListingDetail
        {
            Listing = listing,
            Attributes = attributes,
            Images = images
        };
    }

    public async Task<IEnumerable<Listing>> GetAllAsync()
    {
        using var conn = _connectionFactory.CreateConnection();
        // Subquery para obtener la imagen principal
        var sql = @"
            SELECT TOP 20 l.*,
                   (SELECT TOP 1 Url FROM ListingImages li WHERE li.ListingId = l.Id ORDER BY IsMainInfo DESC, DisplayOrder ASC) as MainImageUrl
            FROM Listings l
            ORDER BY l.CreatedAt DESC";

        return await conn.QueryAsync<Listing>(sql);
    }

    public async Task<IEnumerable<Listing>> SearchAsync(string? query, int? categoryId)
    {
        using var conn = _connectionFactory.CreateConnection();
        var sql = @"
            SELECT l.*,
                   (SELECT TOP 1 Url FROM ListingImages li WHERE li.ListingId = l.Id ORDER BY IsMainInfo DESC, DisplayOrder ASC) as MainImageUrl
            FROM Listings l
            WHERE 1=1";

        var parameters = new DynamicParameters();

        if (!string.IsNullOrEmpty(query))
        {
            sql += " AND (l.Title LIKE @Query OR l.Description LIKE @Query)";
            parameters.Add("Query", $"%{query}%");
        }

        if (categoryId.HasValue)
        {
            sql += " AND l.CategoryId = @CategoryId";
            parameters.Add("CategoryId", categoryId);
        }

        sql += " ORDER BY l.CreatedAt DESC";

        return await conn.QueryAsync<Listing>(sql, parameters);
    }

    public async Task<IEnumerable<Listing>> GetListingsForPrintAsync(DateTime targetDate)
    {
        using var conn = _connectionFactory.CreateConnection();
        // La lógica: El aviso debe haber empezado antes o en la fecha target
        // Y la fecha target debe ser menor a la fecha de inicio + duración
        var sql = @"
            SELECT l.*, c.Name as CategoryName 
            FROM Listings l
            JOIN Categories c ON l.CategoryId = c.Id
            WHERE l.PrintStartDate IS NOT NULL 
              AND @TargetDate >= CAST(l.PrintStartDate AS DATE)
              AND @TargetDate < DATEADD(day, l.PrintDaysCount, CAST(l.PrintStartDate AS DATE))
            ORDER BY c.Name, l.Title"; // Ordenado por Rubro y luego alfabético

        return await conn.QueryAsync<Listing>(sql, new { TargetDate = targetDate.Date });
    }
}