import { useRef } from 'react'
import { X, ImageIcon, ChevronDown, BarChart2 } from 'lucide-react'
import { TagInput } from './TagInput'

export function Sidebar({ meta, categories, onChange, onUploadCover, wordCount, charCount, fonts }) {
  const coverRef = useRef(null)

  return (
    <aside className="w-[280px] flex-shrink-0 bg-slate-900 border-l border-slate-800 flex flex-col overflow-y-auto">

      {/* Stats bar */}
      <div className="flex items-center gap-4 px-4 py-3 border-b border-slate-800">
        <BarChart2 size={14} className="text-slate-500 flex-shrink-0" />
        <div className="flex gap-4 text-xs">
          <span>
            <span className="font-semibold text-white">{wordCount}</span>
            <span className="text-slate-400 ml-1">слов</span>
          </span>
          <span>
            <span className="font-semibold text-white">{charCount}</span>
            <span className="text-slate-400 ml-1">симв.</span>
          </span>
        </div>
      </div>

      {/* Status */}
      <div className="px-4 pt-4 pb-1">
        <span className={`inline-flex items-center gap-1.5 px-2.5 py-1 rounded-full text-xs font-medium
          ${meta.status === 'published'
            ? 'bg-emerald-900/60 text-emerald-300 border border-emerald-800'
            : 'bg-amber-900/40 text-amber-300 border border-amber-800/60'}`}
        >
          <span className={`w-1.5 h-1.5 rounded-full ${meta.status === 'published' ? 'bg-emerald-400' : 'bg-amber-400'}`} />
          {meta.status === 'published' ? 'Опубликовано' : 'Черновик'}
        </span>
      </div>

      <div className="p-4 space-y-5">

        {/* Slug */}
        <div>
          <Label>URL (slug)</Label>
          <input
            className="input-dark font-mono text-xs"
            placeholder="url-stati"
            value={meta.slug}
            onChange={e => onChange({ slug: e.target.value })}
          />
        </div>

        {/* Excerpt */}
        <div>
          <Label>Анонс</Label>
          <textarea
            className="input-dark resize-none text-sm"
            placeholder="Краткое описание статьи…"
            rows={3}
            value={meta.excerpt}
            onChange={e => onChange({ excerpt: e.target.value })}
          />
        </div>

        {/* Category */}
        <div>
          <Label>Категория</Label>
          <div className="relative">
            <select
              className="input-dark appearance-none cursor-pointer pr-8 text-sm"
              value={meta.category_id || ''}
              onChange={e => onChange({ category_id: e.target.value || null })}
            >
              <option value="">Без категории</option>
              {categories.map(c => (
                <option key={c.id} value={c.id}>{c.name}</option>
              ))}
            </select>
            <ChevronDown size={13} className="absolute right-2.5 top-1/2 -translate-y-1/2 text-slate-400 pointer-events-none" />
          </div>
        </div>

        {/* Tags */}
        <div>
          <Label>Теги</Label>
          <TagInput tags={meta.tag_names} onChange={tags => onChange({ tag_names: tags })} />
          <p className="text-[11px] text-slate-500 mt-1.5">Enter или запятая для добавления</p>
        </div>

        {/* Font */}
        <div>
          <Label>Шрифт статьи</Label>
          <div className="relative">
            <select
              className="input-dark appearance-none cursor-pointer pr-8 text-sm"
              style={{ fontFamily: meta.font_family }}
              value={meta.font_family}
              onChange={e => onChange({ font_family: e.target.value })}
            >
              {fonts.map(f => (
                <option key={f} value={f} style={{ fontFamily: f }}>{f}</option>
              ))}
            </select>
            <ChevronDown size={13} className="absolute right-2.5 top-1/2 -translate-y-1/2 text-slate-400 pointer-events-none" />
          </div>
        </div>

        {/* Cover image */}
        <div>
          <Label>Обложка</Label>
          {meta.cover_url ? (
            <div className="relative rounded-xl overflow-hidden ring-1 ring-slate-700">
              <img
                src={meta.cover_url}
                alt="cover"
                className="w-full h-36 object-cover"
              />
              <button
                type="button"
                onClick={() => onChange({ cover_url: null })}
                className="absolute top-2 right-2 p-1.5 bg-slate-900/80 backdrop-blur-sm rounded-full hover:bg-red-600 transition-colors"
              >
                <X size={12} className="text-white" />
              </button>
            </div>
          ) : (
            <button
              type="button"
              onClick={() => coverRef.current?.click()}
              className="w-full h-28 border-2 border-dashed border-slate-700 rounded-xl flex flex-col items-center justify-center gap-2 hover:border-indigo-500 hover:bg-slate-800/50 transition-all group"
            >
              <ImageIcon size={20} className="text-slate-500 group-hover:text-indigo-400 transition-colors" />
              <span className="text-xs text-slate-500 group-hover:text-slate-300 transition-colors">
                Загрузить обложку
              </span>
            </button>
          )}
          <input
            ref={coverRef}
            type="file"
            accept="image/*"
            className="hidden"
            onChange={e => e.target.files[0] && onUploadCover(e.target.files[0])}
          />
        </div>

      </div>
    </aside>
  )
}

function Label({ children }) {
  return (
    <p className="text-[11px] font-semibold uppercase tracking-wider text-slate-400 mb-1.5">
      {children}
    </p>
  )
}