'use client'

import { Note } from '@/lib/types'
import { Clock, FileText, Tag } from 'lucide-react'
import { cn } from '@/lib/utils'
import { useLanguage } from '@/lib/i18n'

interface RecentNotesSectionProps {
  recentNotes: Note[]
  onEdit?: (note: Note, readOnly?: boolean) => void
}

export function RecentNotesSection({ recentNotes, onEdit }: RecentNotesSectionProps) {
  const { language } = useLanguage()

  // Show only the 3 most recent notes
  const topThree = recentNotes.slice(0, 3)

  if (topThree.length === 0) return null

  return (
    <section data-testid="recent-notes-section" className="mb-6">
      {/* Minimalist header - matching your app style */}
      <div className="flex items-center gap-2 mb-3 px-1">
        <Clock className="w-3.5 h-3.5 text-muted-foreground" />
        <span className="text-xs font-medium text-muted-foreground uppercase tracking-wide">
          {language === 'fr' ? 'Récent' : 'Recent'}
        </span>
        <span className="text-xs text-muted-foreground">
          · {topThree.length}
        </span>
      </div>

      {/* Compact 3-card row */}
      <div className="grid grid-cols-1 md:grid-cols-3 gap-3">
        {topThree.map((note, index) => (
          <CompactCard
            key={note.id}
            note={note}
            index={index}
            onEdit={onEdit}
          />
        ))}
      </div>
    </section>
  )
}

// Compact card - matching your app's clean design
function CompactCard({ 
  note, 
  index,
  onEdit 
}: { 
  note: Note
  index: number
  onEdit?: (note: Note, readOnly?: boolean) => void 
}) {
  const { language } = useLanguage()
  // NOTE: Using updatedAt here, but note-card.tsx uses createdAt
  // If times are incorrect, consider using createdAt instead or ensure dates are properly parsed
  const timeAgo = getCompactTime(note.updatedAt, language)
  const isFirstNote = index === 0

  return (
    <button
      onClick={() => onEdit?.(note)}
      className={cn(
        "group relative text-left p-4 bg-card border rounded-xl shadow-sm hover:shadow-md transition-all duration-200 min-h-[44px]",
        isFirstNote && "ring-2 ring-primary/20"
      )}
    >
      {/* Subtle left accent - colored based on recency */}
      <div className={cn(
        "absolute left-0 top-0 bottom-0 w-1 rounded-l-xl",
        isFirstNote 
          ? "bg-gradient-to-b from-blue-500 to-indigo-500" 
          : index === 1
          ? "bg-blue-400 dark:bg-blue-500"
          : "bg-gray-300 dark:bg-gray-600"
      )} />

      {/* Content with left padding for accent line */}
      <div className="pl-2">
        {/* Title */}
        <h3 className="text-sm font-semibold text-foreground line-clamp-1 mb-2">
          {note.title || (language === 'fr' ? 'Sans titre' : 'Untitled')}
        </h3>

        {/* Preview - 2 lines max */}
        <p className="text-xs text-muted-foreground line-clamp-2 mb-3 min-h-[2.5rem]">
          {note.content?.substring(0, 80) || ''}
          {note.content && note.content.length > 80 && '...'}
        </p>

        {/* Footer with time and indicators */}
        <div className="flex items-center justify-between pt-2 border-t border-border">
          {/* Time - left */}
          <span className="text-xs text-muted-foreground flex items-center gap-1">
            <Clock className="w-3 h-3" />
            <span className="font-medium">{timeAgo}</span>
          </span>

          {/* Indicators - right */}
          <div className="flex items-center gap-1.5">
            {/* Notebook indicator */}
            {note.notebookId && (
              <div className="w-1.5 h-1.5 rounded-full bg-blue-500 dark:bg-blue-400" title="In notebook" />
            )}
            {/* Labels indicator */}
            {note.labels && note.labels.length > 0 && (
              <div className="w-1.5 h-1.5 rounded-full bg-emerald-500 dark:bg-emerald-400" title={`${note.labels.length} ${language === 'fr' ? 'étiquettes' : 'labels'}`} />
            )}
          </div>
        </div>
      </div>

      {/* Hover indicator - top right */}
      <div className="absolute top-3 right-3 w-2 h-2 rounded-full bg-primary opacity-0 group-hover:opacity-100 transition-opacity duration-200" />
    </button>
  )
}

// Compact time display - matching your app's style
// NOTE: Ensure dates are properly parsed from database (may come as strings)
function getCompactTime(date: Date | string, language: string): string {
  const now = new Date()
  const then = date instanceof Date ? date : new Date(date)
  
  // Validate date
  if (isNaN(then.getTime())) {
    console.warn('Invalid date provided to getCompactTime:', date)
    return language === 'fr' ? 'date invalide' : 'invalid date'
  }
  
  const seconds = Math.floor((now.getTime() - then.getTime()) / 1000)
  const minutes = Math.floor(seconds / 60)
  const hours = Math.floor(minutes / 60)

  if (language === 'fr') {
    if (seconds < 60) return 'à l\'instant'
    if (minutes < 60) return `il y a ${minutes}m`
    if (hours < 24) return `il y a ${hours}h`
    const days = Math.floor(hours / 24)
    return `il y a ${days}j`
  } else {
    if (seconds < 60) return 'just now'
    if (minutes < 60) return `${minutes}m ago`
    if (hours < 24) return `${hours}h ago`
    const days = Math.floor(hours / 24)
    return `${days}d ago`
  }
}