using GroupService.Domain.Entities;
using GroupService.Domain.IReposities;
using Microsoft.EntityFrameworkCore;

namespace GroupService.Infrastructure.Reposities
{
    public class GroupJoinRequestReposity : IGroupRequestReposity
    {
        private readonly GroupDbContext db;

        public GroupJoinRequestReposity(GroupDbContext db)
        {
            this.db = db;
        }

        public void Create(GroupJoinRequest request)
        {
            db.GroupJoinRequests.Add(request);
        }

        public async Task<IEnumerable<GroupJoinRequest>> FindByGroupIdAsync(Guid groupId)
        {
            return await db.GroupJoinRequests.Where(x => x.GroupId == groupId)
                .OrderByDescending(o => o.CreationTime)
                .ToListAsync();
        }

        public async Task<GroupJoinRequest?> FindByIdAsync(Guid id)
        {
            return await db.GroupJoinRequests.FirstOrDefaultAsync(x => x.Id == id);
        }

        public async Task<IEnumerable<GroupJoinRequest>> FindByUserIdAsync(Guid userId)
        {
            return await db.GroupJoinRequests.Where(x =>
                x.UserId == userId || x.OperatorId == userId
            ).ToListAsync();
        }

        public async Task<IEnumerable<GroupJoinRequest>> FindVisibleToUserAsync(Guid userId)
        {
            var managedGroupIds = db.GroupMembers
                .Where(member => member.UserId == userId &&
                    (member.Role == Domain.Enums.GroupMemberRole.Administrator ||
                     member.Role == Domain.Enums.GroupMemberRole.Master))
                .Select(member => member.GroupId);

            return await db.GroupJoinRequests
                .Where(request => request.UserId == userId || managedGroupIds.Contains(request.GroupId))
                .OrderByDescending(request => request.CreationTime)
                .ToListAsync();
        }
    }
}