'use client';

import { useState } from 'react';
import {
  Box,
  TextField,
  Button,
  Typography,
  Paper,
  Alert,
  CircularProgress,
  Link as MuiLink,
} from '@mui/material';
import { Email, ArrowBack } from '@mui/icons-material';
import { motion } from 'framer-motion';
import Link from 'next/link';
import apiClient from '@/lib/api/client';

export default function ForgotPasswordPage() {
  const [email, setEmail] = useState('');
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState('');
  const [success, setSuccess] = useState(false);

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();

    if (!email.trim()) {
      setError('Please enter your email address');
      return;
    }

    setLoading(true);
    setError('');

    try {
      await apiClient.post('/api/v1/auth/password/forgot', { email });
      setSuccess(true);
    } catch (err: any) {
      console.error('Forgot password error:', err);
      setError(err.response?.data?.message || 'Failed to send reset email. Please try again.');
    } finally {
      setLoading(false);
    }
  };

  return (
    <Box
      sx={{
        minHeight: '100vh',
        display: 'flex',
        alignItems: 'center',
        justifyContent: 'center',
        background: 'linear-gradient(135deg, #FFE4E1 0%, #FFDAB9 100%)',
        px: 2,
      }}
    >
      <motion.div
        initial={{ opacity: 0, y: 20 }}
        animate={{ opacity: 1, y: 0 }}
        transition={{ duration: 0.5 }}
      >
        <Paper
          elevation={0}
          sx={{
            maxWidth: 480,
            width: '100%',
            p: 4,
            borderRadius: 4,
            background: 'rgba(255, 255, 255, 0.95)',
            backdropFilter: 'blur(10px)',
          }}
        >
          {!success ? (
            <>
              <Box sx={{ textAlign: 'center', mb: 4 }}>
                <Box
                  sx={{
                    width: 64,
                    height: 64,
                    borderRadius: '50%',
                    bgcolor: 'primary.light',
                    display: 'flex',
                    alignItems: 'center',
                    justifyContent: 'center',
                    mx: 'auto',
                    mb: 2,
                  }}
                >
                  <Email sx={{ fontSize: 32, color: 'primary.main' }} />
                </Box>
                <Typography variant="h4" fontWeight="600" gutterBottom>
                  Forgot Password?
                </Typography>
                <Typography variant="body2" color="text.secondary">
                  No worries! Enter your email address and we'll send you a link to reset your password.
                </Typography>
              </Box>

              {error && (
                <Alert severity="error" sx={{ mb: 3, borderRadius: 2 }}>
                  {error}
                </Alert>
              )}

              <form onSubmit={handleSubmit}>
                <TextField
                  fullWidth
                  label="Email Address"
                  type="email"
                  value={email}
                  onChange={(e) => setEmail(e.target.value)}
                  disabled={loading}
                  required
                  autoFocus
                  sx={{
                    mb: 3,
                    '& .MuiOutlinedInput-root': {
                      borderRadius: 3,
                    },
                  }}
                />

                <Button
                  fullWidth
                  type="submit"
                  variant="contained"
                  size="large"
                  disabled={loading}
                  sx={{
                    borderRadius: 3,
                    py: 1.5,
                    textTransform: 'none',
                    fontSize: 16,
                    fontWeight: 600,
                  }}
                >
                  {loading ? <CircularProgress size={24} color="inherit" /> : 'Send Reset Link'}
                </Button>
              </form>

              <Box sx={{ mt: 3, textAlign: 'center' }}>
                <MuiLink
                  component={Link}
                  href="/login"
                  sx={{
                    display: 'inline-flex',
                    alignItems: 'center',
                    gap: 0.5,
                    color: 'primary.main',
                    textDecoration: 'none',
                    fontWeight: 500,
                    '&:hover': {
                      textDecoration: 'underline',
                    },
                  }}
                >
                  <ArrowBack sx={{ fontSize: 18 }} />
                  Back to Login
                </MuiLink>
              </Box>
            </>
          ) : (
            <Box sx={{ textAlign: 'center' }}>
              <Box
                sx={{
                  width: 64,
                  height: 64,
                  borderRadius: '50%',
                  bgcolor: 'success.light',
                  display: 'flex',
                  alignItems: 'center',
                  justifyContent: 'center',
                  mx: 'auto',
                  mb: 3,
                }}
              >
                <Email sx={{ fontSize: 32, color: 'success.main' }} />
              </Box>

              <Typography variant="h5" fontWeight="600" gutterBottom>
                Check Your Email 📧
              </Typography>

              <Typography variant="body1" color="text.secondary" sx={{ mb: 3 }}>
                If an account with that email exists, we've sent you a password reset link. Please check your inbox and follow the instructions.
              </Typography>

              <Alert severity="info" sx={{ mb: 3, borderRadius: 2, textAlign: 'left' }}>
                <Typography variant="body2" fontWeight="600" gutterBottom>
                  Didn't receive the email?
                </Typography>
                <Typography variant="body2">
                  • Check your spam or junk folder
                  <br />
                  • Make sure you entered the correct email
                  <br />
                  • The link expires in 1 hour
                </Typography>
              </Alert>

              <Button
                fullWidth
                variant="outlined"
                onClick={() => {
                  setSuccess(false);
                  setEmail('');
                }}
                sx={{
                  borderRadius: 3,
                  py: 1.5,
                  textTransform: 'none',
                  fontSize: 16,
                  fontWeight: 600,
                  mb: 2,
                }}
              >
                Try Another Email
              </Button>

              <MuiLink
                component={Link}
                href="/login"
                sx={{
                  display: 'inline-flex',
                  alignItems: 'center',
                  gap: 0.5,
                  color: 'primary.main',
                  textDecoration: 'none',
                  fontWeight: 500,
                  '&:hover': {
                    textDecoration: 'underline',
                  },
                }}
              >
                <ArrowBack sx={{ fontSize: 18 }} />
                Back to Login
              </MuiLink>
            </Box>
          )}
        </Paper>
      </motion.div>
    </Box>
  );
}
