"use client"

import type { MouseEvent, ReactNode } from "react"
import { useCallback, useEffect, useMemo, useRef, useState } from "react"
import {
  HoverCard,
  HoverCardContent,
  HoverCardTrigger,
} from "@/components/ui/hover-card"
import { Button } from "@/components/ui/button"
import { cn } from "@/lib/utils"
import {
  avatarColor,
  cleanSenderName,
  resolveSenderEmail,
  senderInitial,
} from "@/lib/sender-display"
import {
  Calendar,
  ExternalLink,
  Mail,
  MessageSquare,
  UserPlus,
  Video,
} from "lucide-react"
import { useComposeActions } from "@/lib/compose-context"
import { useContactsStore } from "@/lib/contacts/contacts-store"
import {
  findContactByEmail,
  parseDisplayNameToNameParts,
} from "@/lib/contacts/find-contact"
import { useLongPress } from "@/hooks/use-long-press"
import { useCoarsePointer } from "@/hooks/use-touch-nav"

const HOVER_OPEN_DELAY_MS = 1000

export interface ContactHoverCardProps {
  /** Champ expéditeur brut (liste, conversation, etc.) */
  displayName: string
  email?: string
  children: ReactNode
  className?: string
  onTriggerClick?: (e: MouseEvent<HTMLSpanElement>) => void
  align?: "start" | "center" | "end"
  side?: "top" | "right" | "bottom" | "left"
}

export function ContactHoverCard({
  displayName,
  email: emailOverride,
  children,
  className,
  onTriggerClick,
  align = "start",
  side = "bottom",
}: ContactHoverCardProps) {
  const { openComposeWithInitial } = useComposeActions()
  const contacts = useContactsStore((s) => s.contacts)
  const openContactDetail = useContactsStore((s) => s.openContactDetail)
  const openCreateContact = useContactsStore((s) => s.openCreateContact)
  const [open, setOpen] = useState(false)
  const coarsePointer = useCoarsePointer()
  const triggerRef = useRef<HTMLSpanElement>(null)
  const contentRef = useRef<HTMLDivElement>(null)
  const allowHoverOpenRef = useRef(false)

  const name = cleanSenderName(displayName)
  const email = resolveSenderEmail(displayName, emailOverride)
  const color = avatarColor(name)

  const matchedContact = useMemo(
    () => findContactByEmail(contacts, email),
    [contacts, email],
  )

  const openContactsPanel = useCallback(() => {
    setOpen(false)
    if (matchedContact) {
      openContactDetail(matchedContact.id)
      return
    }
    const { firstName, lastName } = parseDisplayNameToNameParts(name)
    openCreateContact({
      firstName,
      lastName,
      emails: email ? [{ value: email, label: "Domicile" }] : undefined,
    })
  }, [matchedContact, name, email, openContactDetail, openCreateContact])

  const openFromLongPress = useCallback(() => {
    allowHoverOpenRef.current = true
    setOpen(true)
    queueMicrotask(() => {
      allowHoverOpenRef.current = false
    })
  }, [])

  const longPress = useLongPress(openFromLongPress, {
    disabled: !coarsePointer,
    delay: HOVER_OPEN_DELAY_MS,
  })

  const handleOpenChange = useCallback(
    (next: boolean) => {
      if (coarsePointer && next && !allowHoverOpenRef.current) return
      setOpen(next)
    },
    [coarsePointer]
  )

  useEffect(() => {
    if (!open) return
    const close = () => setOpen(false)
    const opts: AddEventListenerOptions = { capture: true, passive: true }
    window.addEventListener("scroll", close, opts)
    window.addEventListener("wheel", close, opts)
    window.addEventListener("touchmove", close, opts)
    return () => {
      window.removeEventListener("scroll", close, opts)
      window.removeEventListener("wheel", close, opts)
      window.removeEventListener("touchmove", close, opts)
    }
  }, [open])

  useEffect(() => {
    if (!open || !coarsePointer) return
    const onPointerDown = (e: PointerEvent) => {
      const target = e.target as Node
      if (triggerRef.current?.contains(target)) return
      if (contentRef.current?.contains(target)) return
      setOpen(false)
    }
    document.addEventListener("pointerdown", onPointerDown, { capture: true })
    return () =>
      document.removeEventListener("pointerdown", onPointerDown, { capture: true })
  }, [open, coarsePointer])

  return (
    <HoverCard
      open={open}
      onOpenChange={handleOpenChange}
      openDelay={coarsePointer ? 1_000_000 : HOVER_OPEN_DELAY_MS}
      closeDelay={150}
    >
      <HoverCardTrigger asChild>
        <span
          ref={triggerRef}
          role="presentation"
          tabIndex={0}
          className={cn(
            "inline min-w-0 max-w-full cursor-default text-inherit outline-none focus-visible:ring-2 focus-visible:ring-[#1a73e8]/30 focus-visible:ring-offset-1 rounded-sm",
            longPress.ackClassName,
            className
          )}
          onClick={(e) => {
            onTriggerClick?.(e)
          }}
          onPointerDown={coarsePointer ? longPress.onPointerDown : undefined}
          onPointerUp={coarsePointer ? longPress.onPointerUp : undefined}
          onPointerLeave={coarsePointer ? longPress.onPointerLeave : undefined}
          onPointerCancel={coarsePointer ? longPress.onPointerCancel : undefined}
          onClickCapture={coarsePointer ? longPress.onClickCapture : undefined}
        >
          {children}
        </span>
      </HoverCardTrigger>
      <HoverCardContent
        ref={contentRef}
        side={side}
        align={align}
        sideOffset={8}
        className={cn(
          "min-w-[380px] w-max max-w-[min(440px,calc(100vw-24px))] rounded-2xl border border-border bg-popover p-0 text-popover-foreground shadow-lg",
          "data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 z-50 outline-hidden"
        )}
      >
        <div className="p-4 pb-3">
          <div className="relative flex items-start gap-3">
            <div
              className="flex h-14 w-14 shrink-0 items-center justify-center rounded-full text-lg font-bold text-white"
              style={{ backgroundColor: color }}
            >
              {senderInitial(name)}
            </div>
            <div className="min-w-0 flex-1 pr-8">
              <p className="truncate text-base font-semibold leading-tight text-[#202124]">{name}</p>
              <p className="truncate text-sm leading-tight text-[#5f6368]">{email}</p>
            </div>
            <Button
              type="button"
              variant="ghost"
              size="icon"
              className="absolute right-0 top-0 h-8 w-8 shrink-0 text-[#5f6368] hover:bg-[#f1f3f4]"
              aria-label={
                matchedContact ? "Voir le contact" : "Ajouter aux contacts"
              }
              onClick={(e) => {
                e.stopPropagation()
                openContactsPanel()
              }}
            >
              <UserPlus className="h-[18px] w-[18px]" strokeWidth={1.5} />
            </Button>
          </div>
        </div>

        <div className="flex flex-nowrap items-center gap-2 px-4 pb-4">
          <button
            type="button"
            className="inline-flex h-9 shrink-0 items-center justify-center gap-2 whitespace-nowrap rounded-full bg-[#d3e3fd] px-5 text-sm font-medium text-[#001d35] transition-colors hover:bg-[#c4d9fc]"
            onClick={(e) => {
              e.stopPropagation()
              openComposeWithInitial({
                to: [{ name, email }],
              })
            }}
          >
            <Mail className="h-[18px] w-[18px] shrink-0" strokeWidth={1.5} />
            Envoyer un e-mail
          </button>
          <button
            type="button"
            className="flex h-9 w-9 shrink-0 items-center justify-center rounded-full border border-border bg-mail-surface text-muted-foreground transition-colors hover:bg-accent"
            aria-label="Message"
          >
            <MessageSquare className="h-[18px] w-[18px]" strokeWidth={1.5} />
          </button>
          <button
            type="button"
            className="flex h-9 w-9 shrink-0 items-center justify-center rounded-full border border-border bg-mail-surface text-muted-foreground transition-colors hover:bg-accent"
            aria-label="Visioconférence"
          >
            <Video className="h-[18px] w-[18px]" strokeWidth={1.5} />
          </button>
          <button
            type="button"
            className="relative flex h-9 w-9 shrink-0 items-center justify-center rounded-full border border-border bg-mail-surface text-muted-foreground transition-colors hover:bg-accent"
            aria-label="Planifier"
          >
            <Calendar className="h-[18px] w-[18px]" strokeWidth={1.5} />
            <span className="absolute right-1 top-1 size-1.5 rounded-full bg-[#1a73e8]" aria-hidden />
          </button>
        </div>

        <div className="border-t border-[#eceff1] px-3 pb-3 pt-2">
          <button
            type="button"
            className="flex w-full items-center justify-center gap-2 rounded-lg bg-[#f1f3f4] px-3 py-2.5 text-sm font-medium text-[#1a73e8] transition-colors hover:bg-[#e8eaed]"
            onClick={(e) => {
              e.stopPropagation()
              openContactsPanel()
            }}
          >
            {matchedContact ? (
              <>
                Ouvrir la vue détaillée
                <ExternalLink className="h-4 w-4 shrink-0" strokeWidth={1.5} />
              </>
            ) : (
              <>
                Ajouter aux contacts
                <UserPlus className="h-4 w-4 shrink-0" strokeWidth={1.5} />
              </>
            )}
          </button>
        </div>
      </HoverCardContent>
    </HoverCard>
  )
}