/**
 * This file is part of Sharenet.
 * 
 * Sharenet is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
 * 
 * You may obtain a copy of the license at:
 * https://creativecommons.org/licenses/by-nc-sa/4.0/
 * 
 * Copyright (c) 2024 Continuist <continuist02@gmail.com>
 */

'use client';

import { useState, useEffect } from 'react';
import { userApi, User } from '@/lib/api';
import { Button } from '@/components/ui/button';
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from '@/components/ui/table';
import {
  Dialog,
  DialogContent,
  DialogHeader,
  DialogTitle,
  DialogTrigger,
} from '@/components/ui/dialog';
import { Input } from '@/components/ui/input';
import { Label } from '@/components/ui/label';

export default function UsersPage() {
  const [users, setUsers] = useState<User[]>([]);
  const [isDialogOpen, setIsDialogOpen] = useState(false);
  const [editingUser, setEditingUser] = useState<User | null>(null);
  const [formData, setFormData] = useState({
    username: '',
    email: '',
  });

  useEffect(() => {
    loadUsers();
  }, []);

  const loadUsers = async () => {
    try {
      const response = await userApi.getAll();
      setUsers(response.data);
    } catch (error) {
      console.error('Error loading users:', error);
    }
  };

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    try {
      if (editingUser) {
        await userApi.update(editingUser.id, formData);
      } else {
        await userApi.create(formData);
      }
      setIsDialogOpen(false);
      setEditingUser(null);
      setFormData({ username: '', email: '' });
      loadUsers();
    } catch (error) {
      console.error('Error saving user:', error);
    }
  };

  const handleEdit = (user: User) => {
    setEditingUser(user);
    setFormData({ username: user.username, email: user.email });
    setIsDialogOpen(true);
  };

  const handleDelete = async (id: string) => {
    if (confirm('Are you sure you want to delete this user?')) {
      try {
        await userApi.delete(id);
        loadUsers();
      } catch (error) {
        console.error('Error deleting user:', error);
      }
    }
  };

  return (
    <div className="space-y-4">
      <div className="flex justify-between items-center">
        <h1 className="text-2xl font-bold">Users</h1>
        <Dialog open={isDialogOpen} onOpenChange={setIsDialogOpen}>
          <DialogTrigger asChild>
            <Button onClick={() => {
              setEditingUser(null);
              setFormData({ username: '', email: '' });
            }}>
              Add User
            </Button>
          </DialogTrigger>
          <DialogContent>
            <DialogHeader>
              <DialogTitle>{editingUser ? 'Edit User' : 'Add User'}</DialogTitle>
            </DialogHeader>
            <form onSubmit={handleSubmit} className="space-y-4">
              <div className="space-y-2">
                <Label htmlFor="username">Username</Label>
                <Input
                  id="username"
                  value={formData.username}
                  onChange={(e) => setFormData({ ...formData, username: e.target.value })}
                  required
                />
              </div>
              <div className="space-y-2">
                <Label htmlFor="email">Email</Label>
                <Input
                  id="email"
                  type="email"
                  value={formData.email}
                  onChange={(e) => setFormData({ ...formData, email: e.target.value })}
                  required
                />
              </div>
              <Button type="submit">{editingUser ? 'Update' : 'Create'}</Button>
            </form>
          </DialogContent>
        </Dialog>
      </div>

      <Table>
        <TableHeader>
          <TableRow>
            <TableHead>ID</TableHead>
            <TableHead>Username</TableHead>
            <TableHead>Email</TableHead>
            <TableHead>Created At</TableHead>
            <TableHead>Updated At</TableHead>
            <TableHead>Actions</TableHead>
          </TableRow>
        </TableHeader>
        <TableBody>
          {users.map((user) => (
            <TableRow key={user.id}>
              <TableCell>{user.id}</TableCell>
              <TableCell>{user.username}</TableCell>
              <TableCell>{user.email}</TableCell>
              <TableCell>{new Date(user.created_at).toLocaleString()}</TableCell>
              <TableCell>{new Date(user.updated_at).toLocaleString()}</TableCell>
              <TableCell>
                <div className="space-x-2">
                  <Button variant="outline" size="sm" onClick={() => handleEdit(user)}>
                    Edit
                  </Button>
                  <Button variant="destructive" size="sm" onClick={() => handleDelete(user.id)}>
                    Delete
                  </Button>
                </div>
              </TableCell>
            </TableRow>
          ))}
        </TableBody>
      </Table>
    </div>
  );
}