frontend/src/components/ai-elements/web-preview.tsx

'use client';

import type { ComponentProps, ReactNode } from 'react';
import { createContext, useContext, useEffect, useState } from 'react';
import { ChevronDownIcon } from 'lucide-react';
import { cn } from '@/lib/utils';
import { Button } from '@/components/ui/button';
import { Collapsible, CollapsibleContent, CollapsibleTrigger } from '@/components/ui/collapsible';
import { Input } from '@/components/ui/input';
import { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from '@/components/ui/tooltip';

export type WebPreviewContextValue = {
  url: string;
  setUrl: (url: string) => void;
  consoleOpen: boolean;
  setConsoleOpen: (open: boolean) => void;
};

const WebPreviewContext = createContext<WebPreviewContextValue | null>(null);

const useWebPreview = () => {
  const context = useContext(WebPreviewContext);
  if (!context) {
    throw new Error('WebPreview components must be used within a WebPreview');
  }
  return context;
};

export type WebPreviewProps = ComponentProps<'div'> & {
  defaultUrl?: string;
  onUrlChange?: (url: string) => void;
};

export const WebPreview = ({ className, children, defaultUrl = '', onUrlChange, ...props }: WebPreviewProps) => {
  const [url, setUrl] = useState(defaultUrl);
  const [consoleOpen, setConsoleOpen] = useState(false);

  const handleUrlChange = (newUrl: string) => {
    setUrl(newUrl);
    onUrlChange?.(newUrl);
  };

  const contextValue: WebPreviewContextValue = {
    url,
    setUrl: handleUrlChange,
    consoleOpen,
    setConsoleOpen,
  };

  return (
    <WebPreviewContext.Provider value={contextValue}>
      <div className={cn('bg-card flex size-full flex-col rounded-lg border', className)} {...props}>
        {children}
      </div>
    </WebPreviewContext.Provider>
  );
};

export type WebPreviewNavigationProps = ComponentProps<'div'>;

export const WebPreviewNavigation = ({ className, children, ...props }: WebPreviewNavigationProps) => (
  <div className={cn('flex items-center gap-1 border-b p-2', className)} {...props}>
    {children}
  </div>
);

export type WebPreviewNavigationButtonProps = ComponentProps<typeof Button> & {
  tooltip?: string;
};

export const WebPreviewNavigationButton = ({ onClick, disabled, tooltip, children, ...props }: WebPreviewNavigationButtonProps) => (
  <TooltipProvider>
    <Tooltip>
      <TooltipTrigger asChild>
        <Button className='hover:text-foreground h-8 w-8 p-0' disabled={disabled} onClick={onClick} size='sm' variant='ghost' {...props}>
          {children}
        </Button>
      </TooltipTrigger>
      <TooltipContent>
        <p>{tooltip}</p>
      </TooltipContent>
    </Tooltip>
  </TooltipProvider>
);

export type WebPreviewUrlProps = ComponentProps<typeof Input>;

export const WebPreviewUrl = ({ value, onChange, onKeyDown, ...props }: WebPreviewUrlProps) => {
  const { url, setUrl } = useWebPreview();
  const [inputValue, setInputValue] = useState(url);

  // Sync input value with context URL when it changes externally
  useEffect(() => {
    setInputValue(url);
  }, [url]);

  const handleChange = (event: React.ChangeEvent<HTMLInputElement>) => {
    setInputValue(event.target.value);
    onChange?.(event);
  };

  const handleKeyDown = (event: React.KeyboardEvent<HTMLInputElement>) => {
    if (event.key === 'Enter') {
      const target = event.target as HTMLInputElement;
      setUrl(target.value);
    }
    onKeyDown?.(event);
  };

  return (
    <Input
      className='h-8 flex-1 text-sm'
      onChange={onChange ?? handleChange}
      onKeyDown={handleKeyDown}
      placeholder='Enter URL...'
      value={value ?? inputValue}
      {...props}
    />
  );
};

export type WebPreviewBodyProps = ComponentProps<'iframe'> & {
  loading?: ReactNode;
};

export const WebPreviewBody = ({ className, loading, src, ...props }: WebPreviewBodyProps) => {
  const { url } = useWebPreview();

  return (
    <div className='flex-1'>
      <iframe
        className={cn('size-full', className)}
        sandbox='allow-scripts allow-same-origin allow-forms allow-popups allow-presentation'
        src={(src ?? url) || undefined}
        title='Preview'
        {...props}
      />
      {loading}
    </div>
  );
};

export type WebPreviewConsoleProps = ComponentProps<'div'> & {
  logs?: Array<{
    level: 'log' | 'warn' | 'error';
    message: string;
    timestamp: Date;
  }>;
};

export const WebPreviewConsole = ({ className, logs = [], children, ...props }: WebPreviewConsoleProps) => {
  const { consoleOpen, setConsoleOpen } = useWebPreview();

  return (
    <Collapsible
      className={cn('bg-muted/50 border-t font-mono text-sm', className)}
      onOpenChange={setConsoleOpen}
      open={consoleOpen}
      {...props}
    >
      <CollapsibleTrigger asChild>
        <Button className='hover:bg-muted/50 flex w-full items-center justify-between p-4 text-left font-medium' variant='ghost'>
          Console
          <ChevronDownIcon className={cn('h-4 w-4 transition-transform duration-200', consoleOpen && 'rotate-180')} />
        </Button>
      </CollapsibleTrigger>
      <CollapsibleContent
        className={cn(
          'px-4 pb-4',
          'data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 data-[state=closed]:animate-out data-[state=open]:animate-in outline-none'
        )}
      >
        <div className='max-h-48 space-y-1 overflow-y-auto'>
          {logs.length === 0 ? (
            <p className='text-muted-foreground'>No console output</p>
          ) : (
            logs.map((log, index) => (
              <div
                className={cn(
                  'text-xs',
                  log.level === 'error' && 'text-destructive',
                  log.level === 'warn' && 'text-yellow-600',
                  log.level === 'log' && 'text-foreground'
                )}
                key={`${log.timestamp.getTime()}-${index}`}
              >
                <span className='text-muted-foreground'>{log.timestamp.toLocaleTimeString()}</span> {log.message}
              </div>
            ))
          )}
          {children}
        </div>
      </CollapsibleContent>
    </Collapsible>
  );
};