'use client';

import { Button } from '@/components/ui/button';
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from '@/components/ui/select';
import { useState } from 'react';
import { Download, Copy, Check } from 'lucide-react';
import { toast } from 'sonner';
import {
  exportAsCSS,
  exportAsSCSS,
  exportAsTailwind,
  exportAsJSON,
  exportAsJavaScript,
  downloadAsFile,
  type ExportColor,
} from '@/lib/pastel/utils/export';

interface ExportMenuProps {
  colors: string[];
  className?: string;
}

type ExportFormat = 'css' | 'scss' | 'tailwind' | 'json' | 'javascript';

export function ExportMenu({ colors, className }: ExportMenuProps) {
  const [format, setFormat] = useState<ExportFormat>('css');
  const [copied, setCopied] = useState(false);

  const exportColors: ExportColor[] = colors.map((hex) => ({ hex }));

  const getExportContent = (): string => {
    switch (format) {
      case 'css':
        return exportAsCSS(exportColors);
      case 'scss':
        return exportAsSCSS(exportColors);
      case 'tailwind':
        return exportAsTailwind(exportColors);
      case 'json':
        return exportAsJSON(exportColors);
      case 'javascript':
        return exportAsJavaScript(exportColors);
    }
  };

  const getFileExtension = (): string => {
    switch (format) {
      case 'css':
        return 'css';
      case 'scss':
        return 'scss';
      case 'tailwind':
        return 'js';
      case 'json':
        return 'json';
      case 'javascript':
        return 'js';
    }
  };

  const handleCopy = () => {
    const content = getExportContent();
    navigator.clipboard.writeText(content);
    setCopied(true);
    toast.success('Copied to clipboard!');
    setTimeout(() => setCopied(false), 2000);
  };

  const handleDownload = () => {
    const content = getExportContent();
    const extension = getFileExtension();
    downloadAsFile(content, `palette.${extension}`, 'text/plain');
    toast.success('Downloaded!');
  };

  if (colors.length === 0) {
    return null;
  }

  return (
    <div className={className}>
      <div className="space-y-4">
        <div>
          <h3 className="text-sm font-medium mb-2">Export Palette</h3>
          <Select
            value={format}
            onValueChange={(value) => setFormat(value as ExportFormat)}
          >
            <SelectTrigger>
              <SelectValue placeholder="Select format" />
            </SelectTrigger>
            <SelectContent>
              <SelectItem value="css">CSS Variables</SelectItem>
              <SelectItem value="scss">SCSS Variables</SelectItem>
              <SelectItem value="tailwind">Tailwind Config</SelectItem>
              <SelectItem value="json">JSON</SelectItem>
              <SelectItem value="javascript">JavaScript Array</SelectItem>
            </SelectContent>
          </Select>
        </div>

        <div className="p-4 bg-muted rounded-lg">
          <pre className="text-xs overflow-x-auto">
            <code>{getExportContent()}</code>
          </pre>
        </div>

        <div className="flex gap-2">
          <Button onClick={handleCopy} variant="outline" className="flex-1">
            {copied ? (
              <>
                <Check className="h-4 w-4 mr-2" />
                Copied!
              </>
            ) : (
              <>
                <Copy className="h-4 w-4 mr-2" />
                Copy
              </>
            )}
          </Button>
          <Button onClick={handleDownload} variant="default" className="flex-1">
            <Download className="h-4 w-4 mr-2" />
            Download
          </Button>
        </div>
      </div>
    </div>
  );
}
