import { Link } from 'react-router-dom'
import { Pencil, Globe, Lock, Trash2, GitBranch, FileText, Wrench, Star } from 'lucide-react'
import type { TreeListItem } from '@/types'
import { TagBadges } from '@/components/common/TagBadges'
import { cn } from '@/lib/utils'
import { usePermissions } from '@/hooks/usePermissions'
import { getTreeEditorPath } from '@/lib/routing'

interface TreeGridViewProps {
  trees: TreeListItem[]
  onStartSession: (treeId: string, treeType?: string) => void
  onTagClick: (tag: string) => void
  onFolderCreated: (parentId?: string | null) => void
  onDeleteTree: (tree: TreeListItem) => void
  onForkTree?: (treeId: string) => void
  pinnedTreeIds?: Set<string>
  onTogglePin?: (treeId: string) => void
  pinLoadingTreeIds?: Set<string>
}

export function TreeGridView({
  trees,
  onStartSession,
  onTagClick,
  onDeleteTree,
  onForkTree,
  pinnedTreeIds,
  onTogglePin,
  pinLoadingTreeIds,
}: TreeGridViewProps) {
  const { canEditTree, canDeleteTree } = usePermissions()

  return (
    <div className="grid gap-4 sm:grid-cols-2 lg:grid-cols-3">
      {trees.map((tree) => (
        <div
          key={tree.id}
          className="relative bg-card border border-border rounded-2xl p-4 transition-all hover:-translate-y-0.5 hover:border-primary/30 hover:shadow-md sm:p-6"
        >
          <div className="mb-2 flex items-start justify-between gap-2">
            <div className="flex items-center gap-2">
              <h3 className="font-semibold text-foreground">{tree.name}</h3>
              {tree.status === 'draft' && (
                <span className="inline-flex items-center gap-1 rounded-full bg-yellow-400/10 px-2 py-0.5 text-xs font-medium text-yellow-400">
                  <FileText className="h-3 w-3" />
                  Draft
                </span>
              )}
              {tree.tree_type === 'maintenance' && (
                <span className="inline-flex items-center gap-1 rounded-full border border-amber-500/30 bg-amber-500/10 px-2 py-0.5 font-label text-[0.625rem] uppercase tracking-wide text-amber-400">
                  <Wrench className="h-3 w-3" />
                  Maintenance
                </span>
              )}
              {'fork_info' in tree && Boolean((tree as Record<string, unknown>).fork_info) && (
                <span className="shrink-0 rounded-full bg-violet-400/15 px-1.5 py-0.5 text-[9px] font-semibold uppercase tracking-wide text-violet-400">
                  Fork
                </span>
              )}
            </div>
            <div className="flex items-center gap-2">
              {onTogglePin && (
                <button
                  onClick={(e) => {
                    e.stopPropagation()
                    e.preventDefault()
                    onTogglePin(tree.id)
                  }}
                  disabled={pinLoadingTreeIds?.has(tree.id)}
                  aria-label={pinnedTreeIds?.has(tree.id) ? 'Remove from favorites' : 'Add to favorites'}
                  className={cn(
                    'rounded-md p-1 transition-colors',
                    pinnedTreeIds?.has(tree.id)
                      ? 'text-amber-400 hover:text-amber-300'
                      : 'text-muted-foreground/40 hover:text-amber-400',
                    pinLoadingTreeIds?.has(tree.id) && 'opacity-50 pointer-events-none'
                  )}
                >
                  <Star size={14} fill={pinnedTreeIds?.has(tree.id) ? 'currentColor' : 'none'} />
                </button>
              )}
              {tree.is_public ? (
                <span title="Public tree">
                  <Globe className="h-4 w-4 text-muted-foreground" />
                </span>
              ) : (
                <span title="Private tree">
                  <Lock className="h-4 w-4 text-muted-foreground" />
                </span>
              )}
              {tree.category_info && (
                <span className="rounded-full bg-accent px-2 py-0.5 text-xs text-muted-foreground">
                  {tree.category_info.name}
                </span>
              )}
            </div>
          </div>
          <p className="mb-3 text-sm text-muted-foreground line-clamp-2">
            {tree.description || 'No description available'}
          </p>

          {/* Tags */}
          {tree.tags && tree.tags.length > 0 && (
            <div className="mb-3">
              <TagBadges tags={tree.tags} maxVisible={3} onTagClick={onTagClick} />
            </div>
          )}

          <div className="flex items-center justify-between">
            <span className="text-xs text-muted-foreground">
              v{tree.version} · {tree.usage_count} uses
            </span>
            <div className="flex items-center gap-2">
              {onForkTree && (
                <button
                  type="button"
                  onClick={() => onForkTree(tree.id)}
                  className={cn(
                    'rounded-md border border-border p-2 text-muted-foreground',
                    'hover:bg-accent hover:text-foreground'
                  )}
                  title="Fork tree"
                  aria-label="Fork tree"
                >
                  <GitBranch className="h-4 w-4" />
                </button>
              )}
              {canEditTree({ author_id: tree.author_id, account_id: tree.account_id }) && (
                <Link
                  to={getTreeEditorPath(tree.id, tree.tree_type)}
                  className={cn(
                    'rounded-md border border-border p-2 text-muted-foreground',
                    'hover:bg-accent hover:text-foreground'
                  )}
                  title="Edit tree"
                  aria-label="Edit tree"
                >
                  <Pencil className="h-4 w-4" />
                </Link>
              )}
              {canDeleteTree() && (
                <button
                  type="button"
                  onClick={() => onDeleteTree(tree)}
                  className={cn(
                    'rounded-md border border-border p-1.5 text-muted-foreground',
                    'hover:bg-red-400/10 hover:text-red-400'
                  )}
                  title="Delete tree"
                  aria-label="Delete tree"
                >
                  <Trash2 className="h-4 w-4" />
                </button>
              )}
              <button
                type="button"
                onClick={() => onStartSession(tree.id, tree.tree_type)}
                className={cn(
                  'rounded-md bg-gradient-brand px-3 py-2 text-sm font-medium text-white shadow-lg shadow-primary/20',
                  'hover:opacity-90'
                )}
              >
                Start Session
              </button>
            </div>
          </div>
        </div>
      ))}
    </div>
  )
}