using HelpDesk.Models.Entities;
using HelpDesk.Models.Enums;
using Microsoft.EntityFrameworkCore;

namespace HelpDesk.Data.Repositories;

public class UserRepository : IUserRepository
{
    private readonly HelpDeskDbContext _context;

    public UserRepository(HelpDeskDbContext context)
    {
        _context = context;
    }

    public async Task<User?> GetByIdAsync(Guid id)
        => await _context.Users.FirstOrDefaultAsync(u => u.Id == id);

    public async Task<User?> GetByEmailAsync(string email)
        => await _context.Users.FirstOrDefaultAsync(u => u.Email == email);

    public async Task<IEnumerable<User>> GetAllAsync()
        => await _context.Users.OrderBy(u => u.LastName).ToListAsync();

    public async Task<IEnumerable<User>> GetByRoleAsync(UserRole role)
        => await _context.Users.Where(u => u.Role == role && u.IsActive).OrderBy(u => u.LastName).ToListAsync();

    public async Task<User> CreateAsync(User user)
    {
        _context.Users.Add(user);
        await _context.SaveChangesAsync();
        return user;
    }

    public async Task<User?> UpdateAsync(User user)
    {
        var existing = await _context.Users.FindAsync(user.Id);
        if (existing == null) return null;

        existing.FirstName = user.FirstName;
        existing.LastName = user.LastName;
        existing.Email = user.Email;
        existing.PhoneNumber = user.PhoneNumber;
        existing.AvatarUrl = user.AvatarUrl;
        existing.Role = user.Role;
        existing.IsActive = user.IsActive;
        existing.UpdatedAt = DateTime.UtcNow;

        await _context.SaveChangesAsync();
        return existing;
    }

    public async Task<bool> ExistsAsync(string email)
        => await _context.Users.AnyAsync(u => u.Email == email);
}