import { Card } from '../../../components/ui/card';
import { Input } from '../../../components/ui/input';
import { Label } from '../../../components/ui/label';
import { Textarea } from '../../../components/ui/textarea';
import { HiOutlineDocumentText, HiOutlineHashtag, HiOutlineArrowPath } from 'react-icons/hi2';

function LessonMetadataForm({ metadata, onChange }) {
  const handleChange = (field, value) => {
    onChange({ ...metadata, [field]: value });
  };

  const generateSlug = () => {
    const slug = metadata.title
      .toLowerCase()
      .normalize('NFD')
      .replace(/[\u0300-\u036f]/g, '')
      .replace(/đ/g, 'd')
      .replace(/[^a-z0-9\s-]/g, '')
      .replace(/\s+/g, '-')
      .replace(/-+/g, '-')
      .trim();
    handleChange('slug', slug);
  };

  return (
    <Card className="rounded-xl border border-app-border bg-white overflow-hidden" style={{ boxShadow: 'rgba(0,0,0,0.03) 0px 4px 24px' }}>
      <div className="p-5">
        <div className="flex items-center justify-between pb-4 mb-4 border-b border-app-border">
          <div className="flex items-center gap-2">
            <HiOutlineDocumentText className="w-5 h-5 text-app-primary" />
            <h2 className="text-lg font-semibold text-app-text">Lesson Metadata</h2>
          </div>
          <span className="text-xs font-mono text-app-text-muted uppercase tracking-wider bg-app-surface-muted px-2 py-0.5 rounded">
            schema: lessons
          </span>
        </div>

        <div className="grid grid-cols-1 md:grid-cols-6 gap-4">
          <div className="md:col-span-4">
            <Label className="mb-1.5 block text-app-text text-xs font-semibold uppercase tracking-wider">
              Lesson Title <span className="text-red-500">*</span>
            </Label>
            <Input
              placeholder="VD: 1.1 Khái niệm cơ bản..."
              value={metadata.title}
              onChange={(e) => handleChange('title', e.target.value)}
              className="rounded-xl bg-app-surface-muted border-0 focus:bg-white focus:ring-2 focus:ring-app-primary"
            />
          </div>

          <div className="md:col-span-2">
            <Label className="mb-1.5 block text-app-text text-xs font-semibold uppercase tracking-wider">
              Position
            </Label>
            <div className="relative">
              <HiOutlineHashtag className="absolute left-3 top-2.5 w-4 h-4 text-app-text-muted" />
              <Input
                type="number"
                value={metadata.position}
                onChange={(e) => handleChange('position', e.target.value)}
                className="pl-9 rounded-xl bg-app-surface-muted border-0 focus:bg-white focus:ring-2 focus:ring-app-primary"
              />
            </div>
          </div>

          <div className="md:col-span-6">
            <div className="flex items-center justify-between mb-1.5">
              <Label className="block text-app-text text-xs font-semibold uppercase tracking-wider">
                Slug
              </Label>
              <button
                type="button"
                onClick={generateSlug}
                className="text-app-primary hover:underline text-xs font-medium flex items-center gap-1"
              >
                <HiOutlineArrowPath className="w-3.5 h-3.5" />
                Auto-generate from title
              </button>
            </div>
            <div className="flex rounded-xl overflow-hidden bg-app-surface-muted">
              <span className="px-4 py-2 text-app-text-muted font-mono text-sm bg-app-border/30 flex items-center select-none">
                /lessons/
              </span>
              <Input
                value={metadata.slug}
                onChange={(e) => handleChange('slug', e.target.value)}
                className="border-0 bg-transparent font-mono focus:ring-0 focus:bg-transparent"
              />
            </div>
          </div>

          <div className="md:col-span-6">
            <Label className="mb-1.5 block text-app-text text-xs font-semibold uppercase tracking-wider">
              Description & Learning Objectives
            </Label>
            <Textarea
              placeholder="Mô tả tóm tắt nội dung bài học, kết quả mong đợi của học viên..."
              rows={3}
              value={metadata.description}
              onChange={(e) => handleChange('description', e.target.value)}
              className="rounded-xl bg-app-surface-muted border-0 focus:bg-white focus:ring-2 focus:ring-app-primary resize-none"
            />
          </div>
        </div>
      </div>
    </Card>
  );
}

export default LessonMetadataForm;