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import React, { useState } from 'react';
import { useForm } from 'react-hook-form';
import { zodResolver } from '@hookform/resolvers/zod';
import { z } from 'zod';
import { Button } from './ui/button';
import {
Form,
FormControl,
FormDescription,
FormField,
FormItem,
FormLabel,
FormMessage,
} from './ui/form';
import { Input } from './ui/input';
import { Slider } from './ui/slider';
import { Switch } from './ui/switch';
import { cn } from '@/lib/utils';
import { Card } from './ui/card';
import { Loader2 } from 'lucide-react';
// Define form schema
const formSchema = z.object({
prompt: z.string().min(1, {
message: 'Prompt is required',
}).max(1000, {
message: 'Prompt must be less than 1000 characters',
}),
width: z.number().min(256).max(1024).default(512),
height: z.number().min(256).max(1024).default(512),
seed: z.number().default(0),
randomize_seed: z.boolean().default(true),
guidance_scale: z.number().min(0).max(20).default(7.5),
num_inference_steps: z.number().min(1).max(50).default(20),
});
type FormValues = z.infer<typeof formSchema>;
export default function ImageGenerator() {
const [isLoading, setIsLoading] = useState(false);
const [error, setError] = useState<string | null>(null);
const [imageUrl, setImageUrl] = useState<string | null>(null);
// Default form values
const defaultValues: FormValues = {
prompt: '',
width: 512,
height: 512,
seed: 0,
randomize_seed: true,
guidance_scale: 7.5,
num_inference_steps: 20,
};
// Initialize form
const form = useForm<FormValues>({
resolver: zodResolver(formSchema),
defaultValues,
});
// Handle form submission
const onSubmit = async (data: FormValues) => {
setIsLoading(true);
setError(null);
try {
const response = await fetch('/api/generate-image', {
method: 'POST',
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify(data),
});
if (!response.ok) {
const errorData = await response.json();
throw new Error(errorData.message || 'Failed to generate image');
}
const result = await response.json();
setImageUrl(result.imageUrl);
} catch (err: any) {
setError(err.message || 'An error occurred while generating the image');
console.error('Error generating image:', err);
} finally {
setIsLoading(false);
}
};
return (
<div className="space-y-6">
<div className="flex justify-between items-center">
<h2 className="text-3xl font-bold">Image Generator</h2>
{isLoading && <div className="flex items-center"><Loader2 className="mr-2 h-4 w-4 animate-spin" /> Generating...</div>}
</div>
<div className="grid grid-cols-1 md:grid-cols-2 gap-6">
<div>
<Form {...form}>
<form onSubmit={form.handleSubmit(onSubmit)} className="space-y-6">
<FormField
control={form.control}
name="prompt"
render={({ field }) => (
<FormItem>
<FormLabel>Prompt</FormLabel>
<FormControl>
<Input placeholder="Enter your prompt..." {...field} />
</FormControl>
<FormDescription>
Describe the image you want to generate
</FormDescription>
<FormMessage />
</FormItem>
)}
/>
<div className="grid grid-cols-1 md:grid-cols-2 gap-4">
<FormField
control={form.control}
name="width"
render={({ field }) => (
<FormItem>
<FormLabel>Width: {field.value}px</FormLabel>
<FormControl>
<Slider
min={256}
max={1024}
step={64}
defaultValue={[field.value]}
onValueChange={(value) => field.onChange(value[0])}
/>
</FormControl>
<FormMessage />
</FormItem>
)}
/>
<FormField
control={form.control}
name="height"
render={({ field }) => (
<FormItem>
<FormLabel>Height: {field.value}px</FormLabel>
<FormControl>
<Slider
min={256}
max={1024}
step={64}
defaultValue={[field.value]}
onValueChange={(value) => field.onChange(value[0])}
/>
</FormControl>
<FormMessage />
</FormItem>
)}
/>
</div>
<FormField
control={form.control}
name="randomize_seed"
render={({ field }) => (
<FormItem className="flex flex-row items-center justify-between rounded-lg border p-4">
<div className="space-y-0.5">
<FormLabel className="text-base">Randomize Seed</FormLabel>
<FormDescription>
Use a random seed for each generation
</FormDescription>
</div>
<FormControl>
<Switch
checked={field.value}
onCheckedChange={field.onChange}
/>
</FormControl>
</FormItem>
)}
/>
{!form.watch("randomize_seed") && (
<FormField
control={form.control}
name="seed"
render={({ field }) => (
<FormItem>
<FormLabel>Seed: {field.value}</FormLabel>
<FormControl>
<Input
type="number"
{...field}
onChange={(e) => field.onChange(parseInt(e.target.value) || 0)}
/>
</FormControl>
<FormDescription>
Specific seed for reproducible results
</FormDescription>
<FormMessage />
</FormItem>
)}
/>
)}
<FormField
control={form.control}
name="guidance_scale"
render={({ field }) => (
<FormItem>
<FormLabel>Guidance Scale: {field.value}</FormLabel>
<FormControl>
<Slider
min={0}
max={20}
step={0.1}
defaultValue={[field.value]}
onValueChange={(value) => field.onChange(value[0])}
/>
</FormControl>
<FormDescription>
How closely to follow the prompt (higher = more faithful)
</FormDescription>
<FormMessage />
</FormItem>
)}
/>
<FormField
control={form.control}
name="num_inference_steps"
render={({ field }) => (
<FormItem>
<FormLabel>Inference Steps: {field.value}</FormLabel>
<FormControl>
<Slider
min={1}
max={50}
step={1}
defaultValue={[field.value]}
onValueChange={(value) => field.onChange(value[0])}
/>
</FormControl>
<FormDescription>
Number of denoising steps (higher = better quality but slower)
</FormDescription>
<FormMessage />
</FormItem>
)}
/>
{error && (
<div className="bg-red-50 text-red-500 p-3 rounded-md text-sm">
{error}
</div>
)}
<Button
type="submit"
className="w-full"
disabled={isLoading}
>
{isLoading ? (
<>
<Loader2 className="mr-2 h-4 w-4 animate-spin" />
Generating...
</>
) : (
'Generate Image'
)}
</Button>
</form>
</Form>
</div>
<div className={cn("flex flex-col items-center justify-center",
imageUrl ? "bg-gray-50 dark:bg-gray-900" : "bg-gray-100 dark:bg-gray-800")}>
{imageUrl ? (
<div className="relative w-full">
<img
src={imageUrl}
alt="Generated"
className="rounded-md object-contain max-h-[600px] mx-auto"
/>
<div className="mt-4 flex justify-center">
<Button
variant="outline"
onClick={() => window.open(imageUrl, '_blank')}
className="mr-2"
>
Open in New Tab
</Button>
<Button
variant="outline"
onClick={() => {
const a = document.createElement('a');
a.href = imageUrl;
a.download = 'generated-image.png';
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
}}
>
Download
</Button>
</div>
</div>
) : (
<Card className="w-full h-full flex items-center justify-center p-8 border-dashed">
<div className="text-center">
<p className="text-muted-foreground">
Your generated image will appear here
</p>
</div>
</Card>
)}
</div>
</div>
</div>
);
} |