"use client"

import { ArrowLeftIcon, ChevronLeft } from "lucide-react"
import Link from "next/link"
import { Drawer, DrawerContent, DrawerTrigger } from "@/components/ui/drawer"
import { Button } from "@/components/ui/button"
import Image from "next/image"
import { useEffect, useState } from "react"
import { socket } from "@/components/socket"
import { usePlateStore } from "@/components/zustand/plate-history"
import { Spinner } from "@/components/ui/spinner"

const stream_dummy = [
  { id: "asssd", url: "/app/static/uploads/ds1.mp4" },
  { id: "asaggssd", url: "/app/static/uploads/ds2.mp4" },
  { id: "asss112d", url: "/app/static/uploads/ds3.mp4" },
  { id: "asgsasssd", url: "/app/static/uploads/ds4.mp4" },
]

export default function Etle() {
  const [sessionId, setSessionId] = useState<string | null>(null)
  const [imageSrc, setImageSrc] = useState<string>("")
  const [plate, setPlate] = useState<string>("")
  const [confidence, setConfidence] = useState<number | null>(null)
  const activeStream = usePlateStore((s) => s.activeStreamId)
  const setActiveStream = usePlateStore((s) => s.setActiveStream)
  const history = usePlateStore((s) => s.history)
  const addPlate = usePlateStore((s) => s.addPlate)
  const [loading, setLoading] = useState(true)

  const currentStream = usePlateStore.getState().activeStreamId

  const startDetection = (index: number) => {
    setLoading(true)
    if (history[activeStream]) setPlate("")
    setConfidence(null)
    const stream = stream_dummy[index].url

    socket.emit("stop_detection")
    socket.emit("start_detection", {
      stream_url: stream,
    })
    setTimeout(() => {
      setLoading(false)
    }, 2000)
  }

  useEffect(() => {
    if (!socket.connected) {
      socket.connect()
    }

    socket.on("connected", (data) => {
      setSessionId(data.session_id)
      const stream = stream_dummy.find((a) => a.id == currentStream)
      setActiveStream(currentStream)
      socket.emit("start_detection", {
        stream_url: stream?.url ?? stream_dummy[0].url,
      })
      setTimeout(() => {
        setLoading(false)
      }, 2000)
    })

    socket.on("video_frame", (data) => {
      const thumb = `data:image/jpeg;base64,${data.frame}`
      setImageSrc(thumb)
    })

    socket.on("plate_detected", (data) => {
      setPlate(data.plate_text)
      setConfidence(data.confidence ?? null)

      const thumb = `data:image/jpeg;base64,${data.frame_thumb}`

      if (!currentStream) return

      addPlate(currentStream, {
        imgThumb: thumb,
        plate: data.plate_text,
        confidence: data.confidence,
      })
    })

    socket.on("error", (data) => {
      console.error(data.message)
    })

    socket.on("detection_stopped", (data) => {
      console.log("Selesai. Total:", data.total)
    })

    return () => {
      socket.emit("stop_detection")
      socket.removeAllListeners()
      socket.disconnect()
    }
  }, [])

  const [hasMounted, setHasMounted] = useState(false)

  useEffect(() => {
    setHasMounted(true)
  }, [])

  if (!hasMounted) {
    return null
  }

  return (
    <div className="flex flex-col">
      <div className="flex h-[8vh] flex-row items-center gap-10 bg-[#0057B3] px-8 py-5">
        <Link href="/dashboard">
          <ArrowLeftIcon />
        </Link>
        <p className="text-2xl font-semibold">ETLE Toll</p>
      </div>
      <div className="flex h-[92vh] flex-col items-start gap-5 bg-gray-200 p-8 text-black">
        <p className="text-2xl font-semibold">TRAFFIC VIOLATIONS</p>
        <div className="flex gap-2">
          <p>now {currentStream}</p>
          {stream_dummy.map((stream, index) => (
            <Button
              key={stream.id}
              onClick={() => {
                setActiveStream(stream.id)
                startDetection(index)
              }}
              className={`cursor-pointer ${currentStream == stream.id ? "border-2 bg-gray-50 p-2" : ""}`}
            >
              DS{index + 1}
            </Button>
          ))}
        </div>
        {loading ? (
          <div className="w-screen rounded-lg md:w-full xl:w-180">
            <Spinner className="h-50 w-50" />
          </div>
        ) : (
          imageSrc && (
            <img
              src={imageSrc}
              alt="Realtime"
              className="w-screen rounded-lg md:w-full xl:w-180"
            />
          )
        )}
        <Button
          variant="ghost"
          className="h-12 bg-white px-10 text-xl shadow-sm"
        >
          {plate || "Belum ada plat"}
        </Button>
        <p className="text-2xl font-semibold">VIOLATIONS</p>
        <p>
          {plate
            ? `Plat ${plate} terdeteksi dengan confidence ${confidence}`
            : "Menunggu deteksi..."}
        </p>
      </div>
      <Drawer direction="right">
        <DrawerTrigger asChild title="">
          <Button className="fixed top-1/2 right-0 h-20 w-6 -translate-y-1/2 cursor-pointer rounded-none rounded-l-md bg-white">
            <ChevronLeft />
          </Button>
        </DrawerTrigger>
        <DrawerContent>
          <div className="no-scrollbar space-y-3 overflow-y-auto bg-[#CBCBCBCC] px-4 py-4 text-black">
            <div className="rounded-lg bg-white p-3 text-lg">
              Total Image: {history[activeStream]?.length}
            </div>{" "}
            {history[currentStream]?.map((item, index) => (
              <div key={index} className="rounded-lg bg-white p-3 text-lg">
                <Image
                  src={item.imgThumb}
                  width={1280}
                  height={960}
                  alt={"image" + index}
                  className="rounded-lg"
                />
                <p>Plate : {item.plate}</p>
                <p>Confidence: {item.confidence}</p>
              </div>
            ))}
          </div>
        </DrawerContent>
      </Drawer>
    </div>
  )
}