// SPDX-License-Identifier: MIT OR Apache-2.0
// Copyright (c) 2025 Pierre Fitness Intelligence
import React, { useState, useEffect, useRef } from 'react';
import { useAuth } from '../hooks/useAuth';
import { signInWithGoogle, subscribeToAuthState, isFirebaseEnabled } from '../firebase/firebase';
import { Button, Input } from './ui';
// Pierre holistic node logo SVG inline for the login page
function PierreLogo() {
return (
<svg width="80" height="80" viewBox="0 0 120 120" xmlns="http://www.w3.org/2000/svg">
<defs>
<linearGradient id="pg" x1="0%" y1="0%" x2="100%" y2="100%">
<stop offset="0%" style={{ stopColor: '#7C3AED' }} />
<stop offset="100%" style={{ stopColor: '#06B6D4' }} />
</linearGradient>
<linearGradient id="ag" x1="0%" y1="0%" x2="100%" y2="100%">
<stop offset="0%" style={{ stopColor: '#10B981' }} />
<stop offset="100%" style={{ stopColor: '#059669' }} />
</linearGradient>
<linearGradient id="ng" x1="0%" y1="0%" x2="100%" y2="100%">
<stop offset="0%" style={{ stopColor: '#F59E0B' }} />
<stop offset="100%" style={{ stopColor: '#D97706' }} />
</linearGradient>
<linearGradient id="rg" x1="0%" y1="0%" x2="100%" y2="100%">
<stop offset="0%" style={{ stopColor: '#6366F1' }} />
<stop offset="100%" style={{ stopColor: '#4F46E5' }} />
</linearGradient>
</defs>
<g strokeWidth="2" opacity="0.5" strokeLinecap="round">
<line x1="40" y1="30" x2="52" y2="42" stroke="url(#ag)" />
<line x1="52" y1="42" x2="70" y2="35" stroke="url(#ag)" />
<line x1="52" y1="42" x2="48" y2="55" stroke="url(#pg)" />
<line x1="48" y1="55" x2="75" y2="52" stroke="url(#ng)" />
<line x1="48" y1="55" x2="55" y2="72" stroke="url(#pg)" />
<line x1="55" y1="72" x2="35" y2="85" stroke="url(#rg)" />
<line x1="55" y1="72" x2="72" y2="82" stroke="url(#rg)" />
</g>
<circle cx="40" cy="30" r="7" fill="url(#ag)" />
<circle cx="52" cy="42" r="5" fill="url(#ag)" />
<circle cx="70" cy="35" r="3.5" fill="url(#ag)" />
<circle cx="48" cy="55" r="6" fill="url(#pg)" />
<circle cx="48" cy="55" r="3" fill="#fff" opacity="0.9" />
<circle cx="75" cy="52" r="4.5" fill="url(#ng)" />
<circle cx="88" cy="60" r="3.5" fill="url(#ng)" />
<circle cx="55" cy="72" r="5" fill="url(#rg)" />
<circle cx="35" cy="85" r="4" fill="url(#rg)" />
<circle cx="72" cy="82" r="4" fill="url(#rg)" />
</svg>
);
}
interface LoginProps {
onNavigateToRegister?: () => void;
}
export default function Login({ onNavigateToRegister }: LoginProps) {
const [email, setEmail] = useState('');
const [password, setPassword] = useState('');
const [showPassword, setShowPassword] = useState(false);
const [isLoading, setIsLoading] = useState(false);
const [error, setError] = useState('');
const [isGoogleLoading, setIsGoogleLoading] = useState(false);
const { login, loginWithFirebase } = useAuth();
const processingAuthRef = useRef(false);
// Track if the user manually initiated sign-in (vs auto-login from cached Firebase state)
const userInitiatedSignInRef = useRef(false);
// Listen for Firebase auth state changes (handles redirect result)
useEffect(() => {
const unsubscribe = subscribeToAuthState(async (user) => {
if (user && !processingAuthRef.current) {
processingAuthRef.current = true;
setIsGoogleLoading(true);
// Only clear error if this is a user-initiated action
if (userInitiatedSignInRef.current) {
setError('');
}
try {
const idToken = await user.getIdToken();
await loginWithFirebase(idToken);
} catch (err: unknown) {
// Only show error if user manually initiated the sign-in
// Auto-login from cached Firebase state should fail silently
if (userInitiatedSignInRef.current) {
const apiError = err as { response?: { data?: { error?: string } } };
if (apiError.response?.data?.error) {
setError(apiError.response.data.error);
} else {
const firebaseError = err as { message?: string };
setError(firebaseError.message || 'Google sign-in failed');
}
}
processingAuthRef.current = false;
userInitiatedSignInRef.current = false;
} finally {
setIsGoogleLoading(false);
}
}
});
return () => unsubscribe();
}, [loginWithFirebase]);
const handleSubmit = async (e: React.FormEvent) => {
e.preventDefault();
setIsLoading(true);
setError('');
try {
await login(email, password);
} catch (err: unknown) {
const apiError = err as { response?: { data?: { error?: string } } };
const errorMsg = apiError.response?.data?.error || 'Login failed';
// Map technical errors to user-friendly messages
if (errorMsg === 'invalid_grant' || errorMsg.includes('Invalid') || errorMsg.includes('credentials')) {
setError('Invalid email or password');
} else {
setError(errorMsg);
}
} finally {
setIsLoading(false);
}
};
const handleGoogleSignIn = async () => {
setIsGoogleLoading(true);
setError('');
// Mark this as a user-initiated sign-in so errors will be displayed
userInitiatedSignInRef.current = true;
try {
// Initiate Google sign-in redirect (page will redirect to Google)
await signInWithGoogle();
// Note: signInWithRedirect will redirect the page, so code after this won't execute
} catch (err: unknown) {
const firebaseError = err as { code?: string; message?: string };
if (firebaseError.code === 'auth/network-request-failed') {
setError('Network error. Please check your connection.');
} else {
setError(firebaseError.message || 'Google sign-in failed');
}
setIsGoogleLoading(false);
userInitiatedSignInRef.current = false;
}
};
return (
<div className="min-h-screen flex items-center justify-center py-12 px-4 sm:px-6 lg:px-8 bg-pierre-gray-50">
<div className="max-w-md w-full">
{/* Card with gradient accent bar */}
<div className="bg-white rounded-xl shadow-lg overflow-hidden relative">
{/* Gradient accent bar at top */}
<div className="h-1 w-full bg-gradient-pierre-horizontal" />
<div className="px-8 py-10 space-y-6">
{/* Logo and brand */}
<div className="flex flex-col items-center">
<PierreLogo />
<h1 className="mt-4 text-xl font-bold text-pierre-gray-900 tracking-tight">
Pierre Fitness Platform
</h1>
<p className="mt-1 text-sm text-pierre-gray-500">
Sign in to your account
</p>
</div>
{/* Login form */}
<form className="space-y-5" onSubmit={handleSubmit}>
{error && (
<div className="bg-pierre-red-50 border border-pierre-red-200 text-pierre-red-600 px-4 py-3 rounded-lg text-sm">
{error}
</div>
)}
<div className="space-y-4">
<Input
id="email"
name="email"
type="email"
label="Email address"
autoComplete="email"
required
placeholder="Enter your email"
value={email}
onChange={(e) => setEmail(e.target.value)}
/>
<Input
id="password"
name="password"
type={showPassword ? 'text' : 'password'}
label="Password"
autoComplete="current-password"
required
placeholder="Enter your password"
value={password}
onChange={(e) => setPassword(e.target.value)}
rightIcon={
<button
type="button"
aria-label={showPassword ? 'Hide password' : 'Show password'}
className="hover:text-pierre-gray-600"
onClick={() => setShowPassword(!showPassword)}
>
{showPassword ? (
<svg className="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13.875 18.825A10.05 10.05 0 0112 19c-4.478 0-8.268-2.943-9.543-7a9.97 9.97 0 011.563-3.029m5.858.908a3 3 0 114.243 4.243M9.878 9.878l4.242 4.242M9.878 9.878L3 3m6.878 6.878L21 21" />
</svg>
) : (
<svg className="h-5 w-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M15 12a3 3 0 11-6 0 3 3 0 016 0z" />
<path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z" />
</svg>
)}
</button>
}
/>
</div>
<Button
type="submit"
variant="gradient"
loading={isLoading}
className="w-full"
>
{isLoading ? 'Signing in...' : 'Sign in'}
</Button>
{/* Google Sign-In - only show when Firebase is configured */}
{isFirebaseEnabled() && (
<>
{/* Divider */}
<div className="relative my-4">
<div className="absolute inset-0 flex items-center">
<div className="w-full border-t border-pierre-gray-200" />
</div>
<div className="relative flex justify-center text-sm">
<span className="px-2 bg-white text-pierre-gray-500">or continue with</span>
</div>
</div>
{/* Google Sign-In Button */}
<button
type="button"
onClick={handleGoogleSignIn}
disabled={isGoogleLoading}
className="w-full flex items-center justify-center gap-3 px-4 py-2.5 border border-pierre-gray-300 rounded-lg bg-white hover:bg-pierre-gray-50 transition-colors disabled:opacity-50 disabled:cursor-not-allowed"
>
{isGoogleLoading ? (
<svg className="animate-spin h-5 w-5 text-pierre-gray-500" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24">
<circle className="opacity-25" cx="12" cy="12" r="10" stroke="currentColor" strokeWidth="4"></circle>
<path className="opacity-75" fill="currentColor" d="M4 12a8 8 0 018-8V0C5.373 0 0 5.373 0 12h4zm2 5.291A7.962 7.962 0 014 12H0c0 3.042 1.135 5.824 3 7.938l3-2.647z"></path>
</svg>
) : (
<svg className="w-5 h-5" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z" fill="#4285F4"/>
<path d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z" fill="#34A853"/>
<path d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z" fill="#FBBC05"/>
<path d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z" fill="#EA4335"/>
</svg>
)}
<span className="text-pierre-gray-700 font-medium">
{isGoogleLoading ? 'Signing in...' : 'Continue with Google'}
</span>
</button>
</>
)}
{/* Link to register */}
{onNavigateToRegister && (
<div className="text-center pt-2">
<button
type="button"
onClick={onNavigateToRegister}
className="text-sm text-pierre-violet hover:text-pierre-violet/80 font-medium"
>
Don't have an account? Create one
</button>
</div>
)}
</form>
</div>
</div>
</div>
</div>
);
}
