/**
 * EnxAudioOnlyView.tsx — WhatsApp-style audio-only call screen for React Native
 *
 * Dependencies (install once per project):
 *   npm install react-native-linear-gradient
 *   # Expo:
 *   npx expo install expo-linear-gradient
 *
 * Usage:
 *   const ref = useRef<EnxAudioOnlyViewRef>(null);
 *
 *   <EnxAudioOnlyView
 *     ref={ref}
 *     onMuteToggle={isMuted => ...}
 *     onSpeakerToggle={isSpeaker => ...}
 *     onDisconnect={() => ...}
 *   />
 *
 *   ref.current?.configure('John', 'Doe', 'Calling…')
 *   ref.current?.setSpeaking(true)      // start / stop avatar pulse
 *   ref.current?.setUserVisible(false)  // switch to animated "Calling…" label
 *   ref.current?.setUserVisible(true)   // switch back to name + avatar
 */

import React, {
  forwardRef,
  useCallback,
  useEffect,
  useImperativeHandle,
  useRef,
  useState,
} from 'react';
import {
  Animated,
  Dimensions,
  Easing,
  Image,
  Platform,
  StatusBar,
  StyleSheet,
  Text,
  TouchableOpacity,
  View,
} from 'react-native';

// ─── If react-native-linear-gradient is unavailable, fall back to a plain View.
let LinearGradient;
try {
  LinearGradient = require('react-native-linear-gradient').default;
} catch (error) {
  LinearGradient = ({ children, style }) => <View style={style}>{children}</View>;
}

const AUDIO_ON_ICON = require('../image_asset/audio_on.png');
const AUDIO_OFF_ICON = require('../image_asset/audio_off.png');
const SPEAKER_ICON = require('../image_asset/speaker_off.png');
const EARPIECE_ICON = require('../image_asset/earpic.png');

// ─── Design constants ─────────────────────────────────────────────────────────

const BASE_AVATAR_SIZE = 120;
const BASE_BUTTON_SIZE = 64;
const ACTIVE_COLOR     = '#128C7E';
const RING_ALPHAS      = [0.35, 0.22, 0.12];
const RING_DELAYS      = [0, 220, 440];     // stagger in ms
const HEADER_HEIGHT    = Platform.OS === 'ios' ? 44 : 56;

const DEFAULT_AUDIO_VIEW_CONFIG = {
  gradientLayer1: '#0A3733',
  gradientLayer2: '#031412',
  nameTextColor: '#FFFFFF',
  sortNameTextColor: '#FFFFFF',
  sortNameBGColor: ACTIVE_COLOR,
  statusTextColor: '#D1D5DB',
  controlCardColor: 'rgba(0,0,0,0.8)',
  controlButtonColor: '#1F1F1F',
  activeControlButtonColor: '#063B34',
  ringBackgroundColor: 'rgba(255,255,255,0.08)',
  ringBorderColor: 'rgba(255,255,255,0.18)',
};

const clamp = (value, min, max) => Math.min(Math.max(value, min), max);

const normalizeColor = (value, fallback) => {
  if (typeof value === 'number') {
    const color = value >>> 0;
    const alpha = ((color >>> 24) & 255) / 255;
    const red = (color >>> 16) & 255;
    const green = (color >>> 8) & 255;
    const blue = color & 255;
    return `rgba(${red},${green},${blue},${Number(alpha.toFixed(3))})`;
  }

  if (typeof value === 'string' && value.trim()) {
    return value.trim();
  }

  return fallback;
};

const resolveAudioViewConfig = config => {
  const mergedConfig = { ...DEFAULT_AUDIO_VIEW_CONFIG, ...(config || {}) };

  return Object.keys(DEFAULT_AUDIO_VIEW_CONFIG).reduce((resolvedConfig, key) => {
    resolvedConfig[key] = normalizeColor(mergedConfig[key], DEFAULT_AUDIO_VIEW_CONFIG[key]);
    return resolvedConfig;
  }, {});
};

const getResponsiveLayout = (width, height) => {
  const shortSide = Math.min(width || 360, height || 640);
  const usableHeight = height || 640;
  const compact = usableHeight < 620 || shortSide < 360;
  const scale = clamp(Math.min(shortSide / 390, usableHeight / 760), 0.74, 1.22);
  const avatarSize = Math.round(BASE_AVATAR_SIZE * scale);
  const ringStep = Math.round((compact ? 18 : 24) * scale);
  const ringSizes = RING_ALPHAS.map((_, i) => avatarSize + (i + 1) * ringStep * 2);
  const containerSize = ringSizes[ringSizes.length - 1] + Math.round(16 * scale);
  const buttonSize = Math.round(BASE_BUTTON_SIZE * clamp(scale, 0.78, 1.05));

  return {
    avatarSize,
    buttonSize,
    ringSizes,
    containerSize,
    topPadding: compact ? 8 : Math.round(18 * scale),
    bottomPadding: compact ? 10 : Math.round(18 * scale),
    cardPaddingVertical: compact ? 10 : Math.round(12 * scale),
    cardPaddingHorizontal: compact ? 12 : Math.round(16 * scale),
    cardRadius: Math.round(22 * scale),
    cardWidth: width > 520 ? 420 : Math.max(300, Math.round((width || 360) * 0.92)),
    nameFontSize: Math.round(28 * clamp(scale, 0.82, 1.12)),
    statusFontSize: Math.round(15 * clamp(scale, 0.86, 1.08)),
    labelFontSize: Math.round(12 * clamp(scale, 0.9, 1.05)),
    iconFontSize: Math.round(20 * clamp(scale, 0.9, 1.08)),
    initialsFontSize: Math.round(42 * clamp(scale, 0.82, 1.12)),
    avatarMarginTop: compact ? 4 : Math.round(10 * scale),
  };
};

const getNameParts = user => {
  const displayName = String(
    user?.name ||
    user?.username ||
    user?.userName ||
    user?.clientName ||
    user?.user_ref ||
    ''
  ).trim();
  const [first = '', ...rest] = displayName.split(/\s+/);

  return {
    firstName: first,
    lastName: rest.join(' '),
  };
};

// ─── Icon components ───────────────────────────────────────────────────────

const MicIcon = ({
  color = 'white',
  muted = false,
  size = 20,
}) => (
  <View style={styles.iconContainer}>
    <Image
      source={muted ? AUDIO_OFF_ICON : AUDIO_ON_ICON}
      style={[styles.imageIcon, { width: size + 4, height: size + 4, tintColor: color }]}
      resizeMode="contain"
    />
  </View>
);

const SpeakerIcon = ({
  color = 'white',
  active = false,
  size = 20,
}) => (
  <View style={styles.iconContainer}>
    <Image
      source={active ? SPEAKER_ICON : EARPIECE_ICON}
      style={[styles.imageIcon, { width: size + 4, height: size + 4, tintColor: color }]}
      resizeMode="contain"
    />
  </View>
);

const PhoneDownIcon = ({ size = 20 }) => (
  <View style={styles.iconContainer}>
    <Text style={[styles.iconText, { color: 'white', fontSize: size, lineHeight: size + 4 }]}>📞</Text>
  </View>
);

// ─── Main component ────────────────────────────────────────────────────────────

const EnxAudioOnlyView = forwardRef(
  ({ onMuteToggle, onSpeakerToggle, onDisconnect, audioViewConfig }, ref) => {
    const { width, height } = Dimensions.get('window');
    const statusBarHeight = Platform.OS === 'android' ? StatusBar.currentHeight || 0 : 0;
    const usableHeight = Math.max(height - statusBarHeight - HEADER_HEIGHT, 0);
    const [layoutSize, setLayoutSize] = useState({ width, height: usableHeight });
    const responsiveLayout = getResponsiveLayout(layoutSize.width, layoutSize.height);
    const resolvedAudioConfig = resolveAudioViewConfig(audioViewConfig);

    // ── UI state ─────────────────────────────────────────────────────────────
    const [firstName,    setFirstName]    = useState('');
    const [lastName,     setLastName]     = useState('');
    const [callStatus,   setCallStatus]   = useState('Audio Call');
    const [isMuted,      setIsMuted]      = useState(false);
    const [isSpeaker,    setIsSpeaker]    = useState(false);
    const [userVisible,  setUserVisible]  = useState(true);
    const [callingText,  setCallingText]  = useState('Calling');

    // ── Animated values ───────────────────────────────────────────────────────
    // One { scale, opacity } pair per pulse ring
    const pulseAnims = useRef(
      RING_ALPHAS.map(alpha => ({
        scale:   new Animated.Value(1),
        opacity: new Animated.Value(alpha),
      }))
    ).current;

    const userContentOpacity  = useRef(new Animated.Value(1)).current;
    const callingLabelOpacity = useRef(new Animated.Value(0)).current;

    // ── Internal refs ─────────────────────────────────────────────────────────
    const pulseLoopsRef    = useRef([]);
    const pulseTimeoutsRef = useRef([]);
    const dotTimerRef      = useRef(null);
    const dotStepRef       = useRef(0);
    const selfUserRef      = useRef({ firstName: '', lastName: '', status: 'Audio Call' });

    // ── Pulse animation ───────────────────────────────────────────────────────
    const cancelPulse = () => {
      pulseLoopsRef.current.forEach(loop => loop.stop());
      pulseLoopsRef.current = [];
      pulseTimeoutsRef.current.forEach(t => clearTimeout(t));
      pulseTimeoutsRef.current = [];
      pulseAnims.forEach((anim, i) => {
        anim.scale.setValue(1);
        anim.opacity.setValue(RING_ALPHAS[i]);
      });
    };

    const startPulse = useCallback(() => {
      cancelPulse();
      pulseAnims.forEach((anim, i) => {
        const loop = Animated.loop(
          Animated.sequence([
            Animated.parallel([
              Animated.timing(anim.scale, {
                toValue:        1.18,
                duration:       1350,
                easing:         Easing.inOut(Easing.ease),
                useNativeDriver: true,
              }),
              Animated.timing(anim.opacity, {
                toValue:        0.04,
                duration:       1350,
                easing:         Easing.inOut(Easing.ease),
                useNativeDriver: true,
              }),
            ]),
            Animated.parallel([
              Animated.timing(anim.scale, {
                toValue:        1.0,
                duration:       1350,
                easing:         Easing.inOut(Easing.ease),
                useNativeDriver: true,
              }),
              Animated.timing(anim.opacity, {
                toValue:        RING_ALPHAS[i],
                duration:       1350,
                easing:         Easing.inOut(Easing.ease),
                useNativeDriver: true,
              }),
            ]),
          ])
        );
        // Stagger each ring's start so they ripple outward
        const t = setTimeout(() => loop.start(), RING_DELAYS[i]);
        pulseTimeoutsRef.current.push(t);
        pulseLoopsRef.current.push(loop);
      });
    }, []); // eslint-disable-line react-hooks/exhaustive-deps

    const stopPulse = useCallback(cancelPulse, []); // eslint-disable-line react-hooks/exhaustive-deps

    // ── Calling dots animation ────────────────────────────────────────────────
    const startCallingDots = () => {
      dotStepRef.current = 0;
      setCallingText('Calling');
      if (dotTimerRef.current) clearInterval(dotTimerRef.current);
      dotTimerRef.current = setInterval(() => {
        dotStepRef.current = (dotStepRef.current + 1) % 4;
        setCallingText('Calling' + '.'.repeat(dotStepRef.current));
      }, 500);
    };

    const stopCallingDots = () => {
      if (dotTimerRef.current) {
        clearInterval(dotTimerRef.current);
        dotTimerRef.current = null;
      }
      dotStepRef.current = 0;
    };

    // ── Cleanup on unmount ────────────────────────────────────────────────────
    useEffect(() => {
      return () => {
        cancelPulse();
        stopCallingDots();
      };
    }, []); // eslint-disable-line react-hooks/exhaustive-deps

    // ── Imperative API (matches iOS / Android method signatures) ─────────────
    useImperativeHandle(ref, () => ({
      configure(fn, ln, status = 'Audio Call') {
        selfUserRef.current = { firstName: fn || '', lastName: ln || '', status };
        setFirstName(fn);
        setLastName(ln);
        setCallStatus(status);
      },

      updateActiveTalker(activeTalker, fallbackUser) {
        const activeName = getNameParts(activeTalker);
        const fallbackName = getNameParts(fallbackUser);
        const hasActiveTalker = !!(activeName.firstName || activeName.lastName);

        if (hasActiveTalker) {
          setFirstName(activeName.firstName);
          setLastName(activeName.lastName);
          setCallStatus(activeTalker?.clientId === fallbackUser?.clientId ? 'Audio Call' : 'Speaking');
          startPulse();
          return;
        }

        setFirstName(fallbackName.firstName || selfUserRef.current.firstName);
        setLastName(fallbackName.lastName || selfUserRef.current.lastName);
        setCallStatus(selfUserRef.current.status || 'Audio Call');
        stopPulse();
      },

      setSpeaking(speaking) {
        speaking ? startPulse() : stopPulse();
      },

      setUserVisible(visible) {
        setUserVisible(visible);
        if (visible) {
          stopCallingDots();
          Animated.parallel([
            Animated.timing(userContentOpacity,  { toValue: 1, duration: 250, useNativeDriver: true }),
            Animated.timing(callingLabelOpacity, { toValue: 0, duration: 250, useNativeDriver: true }),
          ]).start();
        } else {
          startCallingDots();
          Animated.parallel([
            Animated.timing(userContentOpacity,  { toValue: 0, duration: 250, useNativeDriver: true }),
            Animated.timing(callingLabelOpacity, { toValue: 1, duration: 250, useNativeDriver: true }),
          ]).start();
        }
      },
    }), [startPulse, stopPulse, userContentOpacity, callingLabelOpacity]);

    // ── Button handlers ───────────────────────────────────────────────────────
    const handleMute = () =>
      setIsMuted(prev => { const next = !prev; onMuteToggle?.(next); return next; });

    const handleSpeaker = () =>
      setIsSpeaker(prev => { const next = !prev; onSpeakerToggle?.(next); return next; });

    const initials = `${firstName.charAt(0)}${lastName.charAt(0)}`.toUpperCase();
    const handleRootLayout = event => {
      const { width: nextWidth, height: nextHeight } = event.nativeEvent.layout;
      if (
        Math.abs(nextWidth - layoutSize.width) > 1 ||
        Math.abs(nextHeight - layoutSize.height) > 1
      ) {
        setLayoutSize({ width: nextWidth || width, height: nextHeight || usableHeight });
      }
    };

    // ── Render ────────────────────────────────────────────────────────────────
    return (
      <LinearGradient
        colors={[resolvedAudioConfig.gradientLayer1, resolvedAudioConfig.gradientLayer2]}
        onLayout={handleRootLayout}
        style={[
          styles.root,
          {
            minHeight: layoutSize.height || usableHeight,
            paddingTop: responsiveLayout.topPadding,
            paddingBottom: responsiveLayout.bottomPadding,
          },
        ]}
      >

        {/* ── Calling label — shown when setUserVisible(false) ── */}
        <Animated.View
          style={[styles.callingContainer, { opacity: callingLabelOpacity }]}
          pointerEvents="none"
        >
          <Text
            style={[
              styles.callingText,
              {
                color: resolvedAudioConfig.nameTextColor,
                fontSize: responsiveLayout.nameFontSize,
              },
            ]}
          >
            {callingText}
          </Text>
        </Animated.View>

        



        <View style={styles.topInfo}>
          {firstName ? (
            <Text
              style={[
                styles.nameText,
                {
                  color: resolvedAudioConfig.nameTextColor,
                  fontSize: responsiveLayout.nameFontSize,
                },
              ]}
              numberOfLines={1}
              adjustsFontSizeToFit
            >
              {firstName}
            </Text>
          ) : null}
          {callStatus ? (
            <Text
              style={[
                styles.statusText,
                {
                  color: resolvedAudioConfig.statusTextColor,
                  fontSize: responsiveLayout.statusFontSize,
                },
              ]}
              numberOfLines={1}
            >
              {callStatus}
            </Text>
          ) : null}
        </View>

        <Animated.View
          style={[styles.userContent, { opacity: userContentOpacity }]}
          pointerEvents={userVisible ? 'box-none' : 'none'}
        >
          <View
            style={[
              styles.avatarContainer,
              {
                width: responsiveLayout.containerSize,
                height: responsiveLayout.containerSize,
                marginTop: responsiveLayout.avatarMarginTop,
              },
            ]}
          >
            {[...responsiveLayout.ringSizes].reverse().map((ringSize, reverseIdx) => {
              const i      = responsiveLayout.ringSizes.length - 1 - reverseIdx;
              const offset = (responsiveLayout.containerSize - ringSize) / 2;
              return (
                <Animated.View
                  key={i}
                  style={[
                    styles.ring,
                    {
                      width:        ringSize,
                      height:       ringSize,
                      borderRadius: ringSize / 2,
                      top:          offset,
                      left:         offset,
                      backgroundColor: resolvedAudioConfig.ringBackgroundColor,
                      borderColor:     resolvedAudioConfig.ringBorderColor,
                      opacity:      pulseAnims[i].opacity,
                      transform:    [{ scale: pulseAnims[i].scale }],
                    },
                  ]}
                />
              );
            })}

            <View
              style={[
                styles.avatarCircle,
                {
                  width: responsiveLayout.avatarSize,
                  height: responsiveLayout.avatarSize,
                  borderRadius: responsiveLayout.avatarSize / 2,
                  backgroundColor: resolvedAudioConfig.sortNameBGColor,
                  top: (responsiveLayout.containerSize - responsiveLayout.avatarSize) / 2,
                  left: (responsiveLayout.containerSize - responsiveLayout.avatarSize) / 2,
                },
              ]}
            >
              <Text
                style={[
                  styles.initialsText,
                  {
                    color: resolvedAudioConfig.sortNameTextColor,
                    fontSize: responsiveLayout.initialsFontSize,
                  },
                ]}
              >
                {initials}
              </Text>
            </View>
          </View>
        </Animated.View>
        
        <View
          style={[
            styles.topControlCard,
            {
              width: responsiveLayout.cardWidth,
              maxWidth: '94%',
              paddingVertical: responsiveLayout.cardPaddingVertical,
              paddingHorizontal: responsiveLayout.cardPaddingHorizontal,
              borderRadius: responsiveLayout.cardRadius,
              backgroundColor: resolvedAudioConfig.controlCardColor,
            },
          ]}
        >
          <View style={styles.controlItem}>
            <TouchableOpacity
              style={[
                styles.circleBtn,
                {
                  width: responsiveLayout.buttonSize,
                  height: responsiveLayout.buttonSize,
                  borderRadius: responsiveLayout.buttonSize / 2,
                  backgroundColor: isMuted
                    ? resolvedAudioConfig.activeControlButtonColor
                    : resolvedAudioConfig.controlButtonColor,
                },
                isMuted && { borderWidth: 1, borderColor: ACTIVE_COLOR },
              ]}
              onPress={handleMute}
              activeOpacity={0.8}
            >
              <MicIcon color="#FFFFFF" muted={isMuted} size={responsiveLayout.iconFontSize} />
            </TouchableOpacity>
            <Text
              style={[
                styles.cardLabel,
                {
                  color: resolvedAudioConfig.nameTextColor,
                  fontSize: responsiveLayout.labelFontSize,
                },
              ]}
            >
              {isMuted ? 'Unmute' : 'Mute'}
            </Text>
          </View>

          <View style={styles.controlItem}>
            <TouchableOpacity
              style={[
                styles.circleBtn,
                styles.endCallBtn,
                {
                  width: responsiveLayout.buttonSize,
                  height: responsiveLayout.buttonSize,
                  borderRadius: responsiveLayout.buttonSize / 2,
                },
              ]}
              onPress={onDisconnect}
              activeOpacity={0.8}
            >
              <PhoneDownIcon size={responsiveLayout.iconFontSize} />
            </TouchableOpacity>
            <Text
              style={[
                styles.cardLabel,
                {
                  color: resolvedAudioConfig.nameTextColor,
                  fontSize: responsiveLayout.labelFontSize,
                },
              ]}
            >
              End Call
            </Text>
          </View>

          <View style={styles.controlItem}>
            <TouchableOpacity
              style={[
                styles.circleBtn,
                {
                  width: responsiveLayout.buttonSize,
                  height: responsiveLayout.buttonSize,
                  borderRadius: responsiveLayout.buttonSize / 2,
                  backgroundColor: isSpeaker
                    ? resolvedAudioConfig.activeControlButtonColor
                    : resolvedAudioConfig.controlButtonColor,
                },
                isSpeaker && { borderWidth: 1, borderColor: ACTIVE_COLOR },
              ]}
              onPress={handleSpeaker}
              activeOpacity={0.8}
            >
              <SpeakerIcon color="#FFFFFF" active={isSpeaker} size={responsiveLayout.iconFontSize} />
            </TouchableOpacity>
            <Text
              style={[
                styles.cardLabel,
                {
                  color: resolvedAudioConfig.nameTextColor,
                  fontSize: responsiveLayout.labelFontSize,
                },
              ]}
            >
              {isSpeaker ? 'Earpiece' : 'Speaker'}
            </Text>
          </View>
        </View>
      </LinearGradient>
    );
  }
);

EnxAudioOnlyView.displayName = 'EnxAudioOnlyView';
export default EnxAudioOnlyView;

// ─── Styles ───────────────────────────────────────────────────────────────────

const styles = StyleSheet.create({
  root: {
    flex:            1,
    flexGrow:        1,
    alignSelf:       'stretch',
    width:           '100%',
    height:          '100%',
    alignItems:      'center',
    justifyContent:  'space-between',
    paddingTop:      Platform.OS === 'ios' ? 24 : 12,
    paddingBottom:   Platform.OS === 'ios' ? 24 : 14,
    backgroundColor: '#121213',
  },

  // Calling label — absolute, centered in the space above content
  callingContainer: {
    ...StyleSheet.absoluteFillObject,
    justifyContent: 'center',
    alignItems:     'center',
  },
  callingText: {
    fontSize:   32,
    fontWeight: '600',
    color:      '#FFFFFF',
    textAlign:  'center',
  },

  // User content — centered avatar + labels
  userContent: {
    alignItems:     'center',
    justifyContent: 'center',
    flex:           1,
    width:          '100%',
  },

  topInfo: {
    alignItems:      'center',
    paddingHorizontal: 24,
    marginTop:       4,
    width:           '100%',
  },
  topControlCard: {
    width: '92%',
    marginBottom: 0,
    paddingVertical: 12,
    paddingHorizontal: 14,
    borderRadius: 24,
    backgroundColor: 'rgba(0,0,0,0.8)',
    flexDirection: 'row',
    justifyContent: 'space-between',
    alignItems: 'center',
    shadowColor: '#000',
    shadowOffset: { width: 0, height: 8 },
    shadowOpacity: 0.08,
    shadowRadius: 20,
    elevation: 6,
  },
  cardLabel: {
    marginTop: 8,
    color: '#FFFFFF',
    fontSize: 12,
    fontWeight: '600',
    textAlign: 'center',
  },
  nameText: {
    fontSize:   30,
    fontWeight: '600',
    color:      '#FFFFFF',
    textAlign:  'center',
  },
  statusText: {
    fontSize:   16,
    color:      '#D1D5DB',
    marginTop:  10,
    textAlign:  'center',
  },

  avatarContainer: {
    width:  BASE_AVATAR_SIZE + 160,
    height: BASE_AVATAR_SIZE + 160,
    marginTop: 10,
  },
  ring: {
    position:        'absolute',
    backgroundColor: 'rgba(255,255,255,0.08)',
    borderWidth:     1,
    borderColor:     'rgba(255,255,255,0.18)',
  },
  avatarCircle: {
    position:        'absolute',
    width:           BASE_AVATAR_SIZE,
    height:          BASE_AVATAR_SIZE,
    borderRadius:    BASE_AVATAR_SIZE / 2,
    backgroundColor: '#009688',
    top:             80,
    left:            80,
    alignItems:      'center',
    justifyContent:  'center',
    shadowColor:     '#000',
    shadowOffset:    { width: 0, height: 8 },
    shadowOpacity:   0.12,
    shadowRadius:    20,
    elevation:       4,
  },
  initialsText: {
    fontSize:   44,
    fontWeight: '500',
    color:      'white',
  },

  // Controls bar — bottom button row
  controlsBar: {
    position:       'absolute',
    bottom:         Platform.OS === 'ios' ? 40 : 28,
    left:           0,
    right:          0,
    flexDirection:  'row',
    justifyContent: 'space-evenly',
    alignItems:     'center',
    paddingHorizontal: 14,
    paddingVertical: 8,
  },
  iconContainer: {
    width: 24,
    height: 24,
    alignItems: 'center',
    justifyContent: 'center',
  },
  iconText: {
    fontSize: 20,
    lineHeight: 24,
  },
  imageIcon: {
    tintColor: '#FFFFFF',
  },
  controlItem: {
    alignItems: 'center',
  },
  circleBtn: {
    width:           BASE_BUTTON_SIZE,
    height:          BASE_BUTTON_SIZE,
    borderRadius:    BASE_BUTTON_SIZE / 2,
    backgroundColor: '#1F1F1F',
    alignItems:      'center',
    justifyContent:  'center',
  },
  circleBtnActive: {
    backgroundColor: '#063B34',
    borderWidth:     1,
    borderColor:     ACTIVE_COLOR,
  },
  endCallBtn: {
    backgroundColor: '#EE3A3A',
  },
  btnLabel: {
    color:      'rgba(238, 235, 235, 0.97)',
    fontSize:   12,
    marginTop:  8,
    textAlign:  'center',
  },
});