using Fake.DependencyInjection;
using Oms.Domain.CustomersAggregate.Entities;
using Oms.Domain.CustomersAggregate.Repositories;
using Oms.SqlSugarCore.Repositories;

namespace Oms.SqlSugarCore.Customers;

public class CustomerRepository : OmsSqlSugarRepository<Customer>, ICustomerRepository, IScopedDependency
{
    public Task<Customer?> GetByCustomerCodeAsync(string customerCode, CancellationToken cancellationToken = default)
    {
        return FirstOrDefaultAsync(x => x.CustomerCode == customerCode, cancellationToken);
    }

    public async Task<Customer?> GetByCustomerCodeIncludingDeletedAsync(
        string customerCode,
        CancellationToken cancellationToken = default)
    {
        var db = await GetDbContextAsync(cancellationToken);
        return await SoftDeleteQuery.FirstIncludingDeletedAsync<Customer>(
            db,
            x => x.CustomerCode == customerCode,
            cancellationToken);
    }

    public Task<Customer?> GetByPhoneAsync(string phone, CancellationToken cancellationToken = default)
    {
        return FirstOrDefaultAsync(x => x.Phone == phone, cancellationToken);
    }

    public async Task<Customer?> GetByPhoneIncludingDeletedAsync(
        string phone,
        CancellationToken cancellationToken = default)
    {
        var db = await GetDbContextAsync(cancellationToken);
        return await SoftDeleteQuery.FirstIncludingDeletedAsync<Customer>(
            db,
            x => x.Phone == phone,
            cancellationToken);
    }

    public Task<Customer?> GetByEmailAsync(string email, CancellationToken cancellationToken = default)
    {
        return FirstOrDefaultAsync(x => x.Email == email, cancellationToken);
    }

    public async Task<Customer?> GetByEmailIncludingDeletedAsync(
        string email,
        CancellationToken cancellationToken = default)
    {
        var db = await GetDbContextAsync(cancellationToken);
        return await SoftDeleteQuery.FirstIncludingDeletedAsync<Customer>(
            db,
            x => x.Email == email,
            cancellationToken);
    }

    public Task<Customer?> GetByWechatOpenidAsync(string wechatOpenid, CancellationToken cancellationToken = default)
    {
        return FirstOrDefaultAsync(x => x.WechatOpenid == wechatOpenid, cancellationToken);
    }

    public Task<bool> ExistsPhoneAsync(string phone, CancellationToken cancellationToken = default)
    {
        return AnyAsync(x => x.Phone == phone, cancellationToken);
    }

    public async Task<bool> ExistsPhoneAnyAsync(string phone, CancellationToken cancellationToken = default)
    {
        var db = await GetDbContextAsync(cancellationToken);
        var hit = await db.Ado.SqlQuerySingleAsync<int?>(
            "SELECT 1 FROM t_customer WHERE Phone = @phone LIMIT 1",
            new { phone });
        return hit.HasValue;
    }

    public async Task<bool> ExistsEmailAnyAsync(string email, CancellationToken cancellationToken = default)
    {
        var db = await GetDbContextAsync(cancellationToken);
        var hit = await db.Ado.SqlQuerySingleAsync<int?>(
            "SELECT 1 FROM t_customer WHERE Email = @email LIMIT 1",
            new { email });
        return hit.HasValue;
    }

    public async Task<bool> ExistsWechatOpenidAnyAsync(string wechatOpenid, CancellationToken cancellationToken = default)
    {
        var db = await GetDbContextAsync(cancellationToken);
        var hit = await db.Ado.SqlQuerySingleAsync<int?>(
            "SELECT 1 FROM t_customer WHERE WechatOpenid = @wechatOpenid LIMIT 1",
            new { wechatOpenid });
        return hit.HasValue;
    }

    public async Task<IReadOnlyList<string>> ListCustomerCodesByPrefixAsync(
        string prefix,
        CancellationToken cancellationToken = default)
    {
        if (string.IsNullOrWhiteSpace(prefix))
        {
            return [];
        }

        var minLength = prefix.Length + 3;
        var maxLength = prefix.Length + 4;
        var db = await GetDbContextAsync(cancellationToken);
        return await db.Queryable<Customer>()
            .Where(x => x.CustomerCode.StartsWith(prefix)
                        && x.CustomerCode.Length >= minLength
                        && x.CustomerCode.Length <= maxLength)
            .Select(x => x.CustomerCode)
            .ToListAsync(cancellationToken);
    }

    public async Task<(IReadOnlyList<(int ReferrerId, int RefereeCount, DateTime? LatestBindTime)> Items, int Total)>
        GetReferrerSummariesPagedAsync(
            string? keyword,
            int pageIndex,
            int pageSize,
            CancellationToken cancellationToken = default)
    {
        var db = await GetDbContextAsync(cancellationToken);
        var kw = string.IsNullOrWhiteSpace(keyword) ? null : keyword.Trim();

        var query = db.Queryable<Customer>()
            .Where(x => x.ReferrerCustomerId != null && x.ParentCustomerId == null)
            .GroupBy(x => x.ReferrerCustomerId)
            .Select(x => new
            {
                ReferrerId = x.ReferrerCustomerId!.Value,
                RefereeCount = SqlSugar.SqlFunc.AggregateCount(x.Id),
                LatestBindTime = SqlSugar.SqlFunc.AggregateMax(x.ReferralBindTime)
            })
            .MergeTable()
            .InnerJoin<Customer>((g, c) => g.ReferrerId == c.Id)
            .Where((g, c) => c.ParentCustomerId == null);

        if (kw != null)
        {
            query = query.Where((g, c) =>
                c.CustomerCode.Contains(kw) ||
                c.CustomerName.Contains(kw) ||
                (c.Phone != null && c.Phone.Contains(kw)));
        }

        var total = await query.CountAsync(cancellationToken);
        var rows = await query
            .OrderByDescending((g, c) => g.LatestBindTime)
            .OrderByDescending((g, c) => g.RefereeCount)
            .Select((g, c) => new
            {
                g.ReferrerId,
                g.RefereeCount,
                g.LatestBindTime
            })
            .ToPageListAsync(pageIndex, pageSize, cancellationToken);

        return (rows.Select(x => (x.ReferrerId, x.RefereeCount, x.LatestBindTime)).ToList(), total);
    }
}