import type { ReactNode } from 'react'
import type { DimensionValue, ViewStyle } from 'react-native'
import React, { useEffect, useMemo, useState } from 'react'
import { Dimensions, StyleSheet, Text, View } from 'react-native'
import { Gesture, GestureDetector } from 'react-native-gesture-handler'
import Animated, {
  interpolate,
  runOnJS,
  useAnimatedStyle,
  useSharedValue,
  withTiming,
} from 'react-native-reanimated'
import LucideIcon from './LucideIcon'

const SCREEN = Dimensions.get('screen')

interface DrawerMenuProps {
  visible: boolean
  duration?: number
  menuPosition?: 'left' | 'right' | 'top' | 'bottom'
  height?: DimensionValue
  hideModal: () => void
  children?: ReactNode
  header?: ReactNode
  isCircle?: boolean
  CircleNum?: number
  isShadowHideModal?: boolean
  title?: string
  showHeader?: boolean
}

export default function Drawer({
  visible,
  height = 300,
  hideModal,
  duration = 300,
  isCircle,
  menuPosition = 'bottom',
  children,
  CircleNum = 12,
  isShadowHideModal = true,
  header,
  title,
  showHeader = true,
}: DrawerMenuProps) {
  const progress = useSharedValue(0)
  const drag = useSharedValue(0)
  const [innerVisible, setInnerVisible] = useState(false)

  /* ================= 显隐 ================= */
  useEffect(() => {
    if (visible) {
      setInnerVisible(true)
      progress.value = withTiming(1, { duration })
    }
    else {
      progress.value = withTiming(0, { duration }, () => {
        runOnJS(setInnerVisible)(false)
      })
    }
  }, [visible])

  /* ================= Drawer 尺寸 ================= */
  const drawerBox = useMemo<ViewStyle>(() => {
    switch (menuPosition) {
      case 'left':
        return { width: height, left: 0, top: 0, bottom: 0 }
      case 'right':
        return { width: height, right: 0, top: 0, bottom: 0 }
      case 'top':
        return { height, left: 0, right: 0, top: 0 }
      case 'bottom':
      default:
        return { height, left: 0, right: 0, bottom: 0 }
    }
  }, [menuPosition, height])

  /* ================= 动画样式（关键） ================= */
  const drawerStyle = useAnimatedStyle(() => {
    switch (menuPosition) {
      case 'bottom': {
        const y = interpolate(progress.value, [0, 1], [SCREEN.height, 0], 'clamp')
        return { transform: [{ translateY: y + drag.value }] }
      }
      case 'top': {
        const y = interpolate(progress.value, [0, 1], [-SCREEN.height, 0], 'clamp')
        return { transform: [{ translateY: y }] }
      }
      case 'left': {
        const x = interpolate(progress.value, [0, 1], [-SCREEN.width, 0], 'clamp')
        return { transform: [{ translateX: x }] }
      }
      case 'right': {
        const x = interpolate(progress.value, [0, 1], [SCREEN.width, 0], 'clamp')
        return { transform: [{ translateX: x }] }
      }
      default:
        return {}
    }
  })

  const maskStyle = useAnimatedStyle(() => ({
    opacity: interpolate(progress.value, [0, 1], [0, 0.45], 'clamp'),
  }))

  /* ================= 手势（只给 bottom） ================= */
  const pan = Gesture.Pan()
    .onUpdate((e) => {
      if (menuPosition === 'bottom' && e.translationY > 0) {
        drag.value = e.translationY
      }
    })
    .onEnd(() => {
      if (menuPosition === 'bottom' && drag.value > 120) {
        progress.value = withTiming(0, { duration }, () => {
          drag.value = 0
          runOnJS(hideModal)()
        })
      }
      else {
        drag.value = withTiming(0)
      }
    })

  if (!innerVisible)
    return null

  return (
    <View style={StyleSheet.absoluteFill} pointerEvents="box-none" className="z-[99]">
      {/* 遮罩 */}
      <Animated.View
        style={[styles.mask, maskStyle]}
        onTouchEnd={() => isShadowHideModal && hideModal()}
      />

      {/* Drawer */}
      <View style={[styles.drawerBox, drawerBox]}>
        <GestureDetector gesture={pan}>
          <Animated.View
            style={[
              styles.drawer,
              drawerStyle,
              {
                borderTopLeftRadius: isCircle ? CircleNum : 0,
                borderTopRightRadius: isCircle ? CircleNum : 0,
              },
            ]}
          >
            {showHeader && (
              header ?? (
                <View style={styles.headTitle}>
                  <Text style={styles.title}>{title}</Text>
                  <LucideIcon
                    icon="X"
                    size={22}
                    style={styles.close}
                    onPress={hideModal}
                  />
                </View>
              )
            )}

            {children}
          </Animated.View>
        </GestureDetector>
      </View>
    </View>
  )
}

const styles = StyleSheet.create({
  mask: {
    ...StyleSheet.absoluteFillObject,
    backgroundColor: '#000',
  },
  drawerBox: {
    position: 'absolute',
  },
  drawer: {
    flex: 1,
    backgroundColor: '#fff',
  },
  headTitle: {
    padding: 12,
    alignItems: 'center',
    justifyContent: 'center',
  },
  title: {
    fontSize: 18,
    fontWeight: '600',
  },
  close: {
    position: 'absolute',
    right: 16,
    top: 12,
  },
})