"use client"

import { useState, useEffect } from "react"
import { useHistory, useParams } from "react-router-dom"

import BottomNavigation from "../components/BottomNavigation"
import { getRouteCourseComplete } from "../shared/consts/router"
import HeaderNav from "../components/HeaderNav"
import video from "../assets/img/video.mov"
import { connect } from "../confconnect"

export interface Exercise {
  id: number
  title: string
  desc: string
  url_file: string
  url_file_img: string
  time: string
  repeats: number
  count: number
  position: number
  day: number
  sessionname: string
}

interface RouteParams {
  courseId: string
  exerciseId: string
}

export const Exercise = () => {
  const history = useHistory()
  const { courseId, exerciseId } = useParams<RouteParams>()
  const [exercise, setExercise] = useState<Exercise | null>(null)
  const [loading, setLoading] = useState(true)
  const [error, setError] = useState<string>("")
  const [isPlaying, setIsPlaying] = useState(false)
  const [currentTime, setCurrentTime] = useState(0)
  const [totalTime, setTotalTime] = useState(900) // Default 15 minutes
  const [currentSet, setCurrentSet] = useState(1)
  const [totalSets, setTotalSets] = useState(3)

  useEffect(() => {
    console.log("Course ID:", courseId)
    console.log("Exercise ID:", exerciseId)

    if (!courseId || !exerciseId) {
      setError("ID курса или упражнения не найден")
      setLoading(false)
      return
    }

    // Получаем данные упражнения через API: GET /pacient/:course_id/:exercise_id
    connect
      .get(`pacient/${courseId}/${exerciseId}`)
      .then((response) => {
        console.log("Response status:", response.status)
        console.log("Response data:", response.data)

        const exerciseData = response.data

        setExercise({
          id: exerciseData.id,
          title: exerciseData.title,
          desc: exerciseData.desc,
          url_file: exerciseData.url_file,
          url_file_img: exerciseData.url_file_img,
          time: exerciseData.time,
          repeats: exerciseData.repeats,
          count: exerciseData.count,
          position: exerciseData.position,
          day: exerciseData.day,
          sessionname: exerciseData.sessionname,
        })

        // Устанавливаем время и подходы из данных упражнения
        if (exerciseData.time) {
          setTotalTime(Number.parseInt(exerciseData.time) * 60) // Конвертируем минуты в секунды
        }
        if (exerciseData.count) {
          setTotalSets(exerciseData.count)
        }

        setLoading(false)
      })
      .catch((error) => {
        console.error("Ошибка при получении упражнения:", error)

        if (error.response) {
          console.error("Ошибка ответа сервера:", error.response.status, error.response.data)
          setError(`Ошибка сервера: ${error.response.status}`)
        } else if (error.request) {
          console.error("Нет ответа от сервера:", error.request)
          setError("Нет ответа от сервера")
        } else {
          console.error("Ошибка при настройке запроса:", error.message)
          setError(`Ошибка: ${error.message}`)
        }

        setLoading(false)
      })
  }, [courseId, exerciseId])

  useEffect(() => {
    let interval: NodeJS.Timeout | undefined
    if (isPlaying) {
      interval = setInterval(() => {
        setCurrentTime((prev) => {
          if (prev >= totalTime) {
            setIsPlaying(false)
            // Отправляем результат на сервер при завершении
            submitProgress()
            // Show completion animation
            history.push(getRouteCourseComplete())
            return totalTime
          }
          return prev + 1
        })
      }, 1000)
    }
    return () => {
      if (interval) clearInterval(interval)
    }
  }, [isPlaying, totalTime, history])

  // Функция для отправки прогресса на сервер
  const submitProgress = async () => {
    if (!courseId || !exerciseId) return

    try {
      const timeUsers = formatTime(currentTime) // Отправляем время в формате MM:SS

      await connect.post(`pacient/${courseId}/${exerciseId}`, {
        time_users: timeUsers,
      })

      console.log("Прогресс отправлен на сервер:", timeUsers)
    } catch (error) {
      console.error("Ошибка при отправке прогресса:", error)
    }
  }

  const formatTime = (seconds: number) => {
    const mins = Math.floor(seconds / 60)
    const secs = seconds % 60
    return `${mins.toString().padStart(2, "0")}:${secs.toString().padStart(2, "0")}`
  }

  const progress = (currentTime / totalTime) * 100

  const PlayIcon = () => (
    <svg className="w-10 h-10 text-white" fill="currentColor" viewBox="0 0 24 24">
      <path d="M8 5v14l11-7z" />
    </svg>
  )

  const PauseIcon = () => (
    <svg className="w-10 h-10 text-white" fill="currentColor" viewBox="0 0 24 24">
      <path d="M6 19h4V5H6v14zm8-14v14h4V5h-4z" />
    </svg>
  )

  const RefreshIcon = () => (
    <svg
      xmlns="http://www.w3.org/2000/svg"
      width="20"
      height="20"
      viewBox="0 0 24 24"
      fill="none"
      stroke="#6F6F6F"
      strokeWidth="3"
      strokeLinecap="round"
      strokeLinejoin="round"
    >
      <path d="M2.5 2v6h6M21.5 22v-6h-6" />
      <path d="M22 11.5A10 10 0 0 0 3.2 7.2M2 12.5a10 10 0 0 0 18.8 4.2" />
    </svg>
  )

  const CheckIcon = () => (
    <svg className="w-6 h-6 text-cyan-500" fill="none" stroke="currentColor" viewBox="0 0 24 24">
      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={3} d="M5 13l4 4L19 7" />
    </svg>
  )

  // Генерируем инструкции на основе реальных данных упражнения
  const exerciseSteps = [
    {
      title: "Описание упражнения",
      description: exercise?.desc || "Выполните упражнение согласно инструкции.",
    },
    {
      title: "Продолжительность",
      description: `Время выполнения: ${exercise?.time || 15} минут`,
    },
    {
      title: "Подходы и повторения",
      description: `Выполните ${exercise?.count || 1} подход по ${exercise?.repeats || 12} повторений с отдыхом 60 секунд между подходами.`,
    },
    {
      title: "Позиция в программе",
      description: `Это упражнение №${exercise?.position || 1} в программе дня ${exercise?.day || 1}.`,
    },
    {
      title: "Техника безопасности",
      description: "Следите за правильной техникой выполнения. При появлении боли немедленно прекратите упражнение.",
    },
  ]

  if (loading) {
    return (
      <div className="bg-gray-50 w-full h-full overflow-auto">
        <div className="mt-36 min-h-screen max-w-4xl mx-auto flex items-center justify-center">
          <div className="text-center">
            <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-[#2BACBE] mx-auto mb-4"></div>
            <p className="text-gray-600">Загрузка упражнения...</p>
          </div>
        </div>
      </div>
    )
  }

  if (error) {
    return (
      <div className="bg-gray-50 w-full h-full overflow-auto">
        <div className="mt-36 min-h-screen max-w-4xl mx-auto">
          <HeaderNav item="Ошибка" text="Не удалось загрузить" />
          <div className="px-6 mt-8">
            <div className="bg-red-50 border border-red-200 rounded-lg p-6 text-center">
              <p className="text-red-600 font-medium mb-4">{error}</p>
              <button
                onClick={() => history.goBack()}
                className="bg-[#2BACBE] text-white px-4 py-2 rounded-lg hover:bg-[#2A9FB8] transition-colors"
              >
                Вернуться назад
              </button>
            </div>
          </div>
        </div>
      </div>
    )
  }

  if (!exercise) {
    return (
      <div className="bg-gray-50 w-full h-full overflow-auto">
        <div className="mt-36 min-h-screen max-w-4xl mx-auto">
          <HeaderNav item="Упражнение" text="Не найдено" />
          <div className="px-6 mt-8">
            <div className="bg-gray-50 border border-gray-200 rounded-lg p-8 text-center">
              <p className="text-gray-600 mb-4">Упражнение не найдено</p>
              <button
                onClick={() => history.goBack()}
                className="bg-[#2BACBE] text-white px-4 py-2 rounded-lg hover:bg-[#2A9FB8] transition-colors"
              >
                Вернуться назад
              </button>
            </div>
          </div>
        </div>
      </div>
    )
  }

  return (
    <div className="bg-gray-50 w-full h-full overflow-auto">
      <div className="mt-36 mb-90 min-h-screen max-w-4xl mx-auto">
        <HeaderNav item={exercise.title} text={`День ${exercise.day}, позиция ${exercise.position}`} />

        <div className="px-4 sm:px-6 mt-10 mb-6">
          <div className="glass-morphism rounded-3xl overflow-hidden shadow-2xl border border-white/20 backdrop-blur-2xl">
            <div className="relative">
              <img src={exercise.url_file_img || video} alt={exercise.title} className="w-full h-120 object-cover" />
              <div className="absolute inset-0 bg-gradient-to-t from-black/30 via-transparent to-black/10"></div>
              <div className="absolute inset-0 flex items-center justify-center">
                <button
                  onClick={() => setIsPlaying(!isPlaying)}
                  className={
                    isPlaying
                      ? "w-20 h-20 bg-transparent backdrop-blur-xl rounded-full flex items-center justify-center shadow-2xl transition-all duration-300 transform hover:scale-110 border border-cyan-50 opacity-40"
                      : "rounded-full w-20 h-20 flex items-center justify-center backdrop-blur-xl opacity-70"
                  }
                >
                  {isPlaying ? <PauseIcon /> : <PlayIcon />}
                </button>
              </div>

              {isPlaying && (
                <div className="absolute top-4 left-4 flex items-center space-x-2">
                  <div className="w-3 h-3 bg-orange-500 rounded-full animate-pulse"></div>
                  <span className="text-white text-sm font-bold bg-black/30 px-3 py-1 rounded-full backdrop-blur-sm">
                    Выполнение
                  </span>
                </div>
              )}

              <div className="absolute top-4 right-4 bg-cyan-50 backdrop-blur-sm px-3 py-1 rounded-xl">
                <span className="text-gray-800 text-sm font-bold">{formatTime(currentTime)}</span>
              </div>
            </div>
          </div>
        </div>

        <div className="px-4 sm:px-6 space-y-4 mb-6">
          {exerciseSteps.map((step, index) => (
            <div
              key={index}
              className="bg-white rounded-2xl p-5 border border-gray-200 shadow-lg hover:shadow-xl transition-all duration-300"
            >
              <div className="flex items-start space-x-4">
                <div>
                  <h3 className="text-lg font-black text-gray-800 mb-2">{step.title}</h3>
                  <p className="text-gray-600 leading-relaxed text-sm sm:text-base">{step.description}</p>
                </div>
              </div>
            </div>
          ))}
        </div>

        {/* Fixed Timer at Bottom */}
        <div className="fixed bottom-36 left-0 right-0 bg-white opacity-95 border-t border-white/20 px-4 sm:px-6 py-4 shadow-2xl z-30">
          <div className="max-w-md mx-auto">
            <div className="flex items-center justify-between mb-3">
              <div className="flex items-center space-x-2">
                <div className="w-2 h-2 bg-green-400 rounded-full animate-pulse"></div>
                <span className="text-sm font-bold text-gray-700">
                  Подход {currentSet} из {totalSets}
                </span>
              </div>
              <span className="text-sm font-black text-gray-700">
                {formatTime(currentTime)} / {formatTime(totalTime)}
              </span>
            </div>
            <div className="bg-white/30 rounded-full h-3 mb-4 overflow-hidden">
              <div
                className="bg-gradient-to-r from-[#2BACBE] via-cyan-500 to-cyan-700 h-3 rounded-full transition-all duration-1000 shadow-sm"
                style={{ width: `${progress}%` }}
              ></div>
            </div>
            <div className="flex space-x-3">
              <button
                onClick={() => setIsPlaying(!isPlaying)}
                className={`flex-1 font-bold py-3 px-4 rounded-xl transition-all duration-300 transform hover:scale-105 flex items-center justify-center space-x-2 ${
                  isPlaying
                    ? "bg-gray-400 text-white shadow-lg"
                    : "bg-[#2BACBE] hover:bg-[#2099A8] text-white shadow-lg"
                }`}
              >
                {isPlaying ? (
                  <>
                    <PauseIcon /> <span>Пауза</span>
                  </>
                ) : (
                  <>
                    <PlayIcon /> <span className="backdrop-blur-xl">Начать</span>
                  </>
                )}
              </button>
              <button
                onClick={() => {
                  setCurrentTime(0)
                  setIsPlaying(false)
                }}
                className="px-6 py-3 bg-white text-gray-800 font-bold rounded-xl transition-all duration-300 hover:shadow-lg border border-gray-200 flex items-center justify-center"
              >
                <RefreshIcon />
              </button>
              <button
                onClick={() => {
                  setCurrentSet((prev) => Math.min(prev + 1, totalSets))
                  submitProgress()
                }}
                className="px-6 py-3 bg-white text-gray-800 font-bold rounded-xl transition-all duration-300 hover:shadow-lg border border-gray-200 flex items-center justify-center"
              >
                <CheckIcon />
              </button>
            </div>
          </div>
        </div>
        <BottomNavigation />
      </div>
    </div>
  )
}