// ── Notes: Note Timeline Component ──
// Displays a list of notes for a lead in a vertical timeline layout.
// Each entry shows author avatar, name, role, timestamp, note content, and edit/delete actions.

"use client"

import { motion } from "framer-motion"
import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
import { Avatar, AvatarFallback, AvatarImage } from "@/components/ui/avatar"
import { Badge } from "@/components/ui/badge"
import { Button } from "@/components/ui/button"
import { Note } from "@/types"
import { EmptyState } from "@/components/shared/empty-state"
import { MessageSquare, Edit2, Trash2 } from "lucide-react"

interface NoteTimelineProps {
  notes: Note[]
}

/**
 * NoteTimeline — renders notes in a time-ordered vertical timeline.
 * Shows an EmptyState when there are no notes. Each note has a connecting line
 * between entries and inline edit/delete buttons.
 */
export function NoteTimeline({ notes }: NoteTimelineProps) {
  if (notes.length === 0) {
    return (
      <Card>
        <CardHeader>
          <CardTitle>Notes</CardTitle>
        </CardHeader>
        <CardContent>
          <EmptyState
            icon={MessageSquare}
            title="No notes yet"
            description="Add the first note to this lead."
          />
        </CardContent>
      </Card>
    )
  }

  return (
    <Card>
      <CardHeader>
        <CardTitle>Notes ({notes.length})</CardTitle>
      </CardHeader>
      <CardContent>
        <div className="space-y-0">
          {notes.map((note, i) => (
            <motion.div
              key={note.id}
              initial={{ opacity: 0, x: -10 }}
              animate={{ opacity: 1, x: 0 }}
              transition={{ delay: i * 0.05 }}
              className="relative flex gap-4 pb-8 last:pb-0"
            >
              {/* Timeline line */}
              {i < notes.length - 1 && (
                <div className="absolute left-5 top-12 bottom-0 w-px bg-border" />
              )}

              {/* Avatar */}
              <div className="relative z-10 shrink-0">
                <Avatar className="h-10 w-10">
                  <AvatarImage src={note.authorAvatar} />
                  <AvatarFallback>{note.authorName[0]}</AvatarFallback>
                </Avatar>
              </div>

              {/* Content */}
              <div className="flex-1 space-y-1">
                <div className="flex items-center gap-2">
                  <span className="text-sm font-medium">{note.authorName}</span>
                  <Badge variant="secondary" className="text-[10px] px-1.5 py-0">
                    {note.authorRole}
                  </Badge>
                  <span className="text-xs text-muted-foreground">
                    {new Date(note.createdAt).toLocaleDateString(undefined, {
                      month: "short",
                      day: "numeric",
                      hour: "2-digit",
                      minute: "2-digit",
                    })}
                  </span>
                </div>
                <p className="text-sm leading-relaxed text-muted-foreground">{note.note}</p>
                <div className="flex items-center gap-2 pt-1">
                  <Button variant="ghost" size="icon" className="h-6 w-6 text-muted-foreground/50 hover:text-muted-foreground">
                    <Edit2 className="h-3 w-3" />
                  </Button>
                  <Button variant="ghost" size="icon" className="h-6 w-6 text-muted-foreground/50 hover:text-destructive">
                    <Trash2 className="h-3 w-3" />
                  </Button>
                </div>
              </div>
            </motion.div>
          ))}
        </div>
      </CardContent>
    </Card>
  )
}