import { HeaderBar } from '@/components/ui/HeaderBar';
import { Colors } from '@/constants/Colors';
import { useAppDispatch } from '@/hooks/redux';
import { useColorScheme } from '@/hooks/useColorScheme';
import { analyzeFoodFromText } from '@/services/foodRecognition';
import { saveRecognitionResult, setError, setLoading } from '@/store/foodRecognitionSlice';
import { triggerHapticFeedback } from '@/utils/haptics';
import { Ionicons } from '@expo/vector-icons';
import Voice from '@react-native-voice/voice';
import { BlurView } from 'expo-blur';
import { router, useLocalSearchParams } from 'expo-router';
import React, { useCallback, useEffect, useRef, useState } from 'react';
import {
  Alert,
  Animated,
  StyleSheet,
  Text,
  TouchableOpacity,
  View
} from 'react-native';

type VoiceRecordState = 'idle' | 'listening' | 'processing' | 'result' | 'analyzing';

export default function VoiceRecordScreen() {
  const theme = useColorScheme() ?? 'light';
  const colorTokens = Colors[theme];
  const { mealType = 'dinner' } = useLocalSearchParams<{ mealType?: string }>();
  const dispatch = useAppDispatch();

  // 状态管理
  const [recordState, setRecordState] = useState<VoiceRecordState>('idle');
  const [recognizedText, setRecognizedText] = useState('');
  const [isListening, setIsListening] = useState(false);
  const [analysisProgress, setAnalysisProgress] = useState(0);

  // 用于跟踪组件是否已卸载，防止在组件卸载后设置状态
  const isMountedRef = useRef(true);
  const progressIntervalRef = useRef<ReturnType<typeof setInterval> | null>(null);

  // 动画相关
  const scaleAnimation = useRef(new Animated.Value(1)).current;
  const pulseAnimation = useRef(new Animated.Value(1)).current;
  const waveAnimation = useRef(new Animated.Value(0)).current;
  const glowAnimation = useRef(new Animated.Value(0)).current;
  const progressAnimation = useRef(new Animated.Value(0)).current;

  // 启动脉动动画
  const startPulseAnimation = () => {
    Animated.loop(
      Animated.sequence([
        Animated.timing(pulseAnimation, {
          toValue: 1.2,
          duration: 800,
          useNativeDriver: true,
        }),
        Animated.timing(pulseAnimation, {
          toValue: 1,
          duration: 800,
          useNativeDriver: true,
        }),
      ])
    ).start();
  };

  // 启动波浪动画
  const startWaveAnimation = () => {
    Animated.loop(
      Animated.timing(waveAnimation, {
        toValue: 1,
        duration: 1500,
        useNativeDriver: false,
      })
    ).start();
  };

  // 启动科幻分析动画
  const startAnalysisAnimation = () => {
    // 光环动画
    Animated.loop(
      Animated.sequence([
        Animated.timing(glowAnimation, {
          toValue: 1,
          duration: 2000,
          useNativeDriver: false,
        }),
        Animated.timing(glowAnimation, {
          toValue: 0,
          duration: 2000,
          useNativeDriver: false,
        }),
      ])
    ).start();

    // 进度条动画
    Animated.timing(progressAnimation, {
      toValue: 1,
      duration: 8000, // 8秒完成
      useNativeDriver: false,
    }).start();
  };

  // 停止所有动画
  const stopAnimations = () => {
    pulseAnimation.stopAnimation();
    waveAnimation.stopAnimation();
    glowAnimation.stopAnimation();
    progressAnimation.stopAnimation();
    scaleAnimation.setValue(1);
    pulseAnimation.setValue(1);
    waveAnimation.setValue(0);
    glowAnimation.setValue(0);
    progressAnimation.setValue(0);
  };

  // 语音识别回调 - 使用 useCallback 避免每次渲染重新创建
  const onSpeechStart = useCallback(() => {
    console.log('语音开始');
    if (!isMountedRef.current) return;

    setIsListening(true);
    setRecordState('listening');
    startPulseAnimation();
    startWaveAnimation();
  }, []);

  const onSpeechRecognized = useCallback(() => {
    console.log('语音识别中...');
  }, []);

  const onSpeechEnd = useCallback(() => {
    console.log('语音结束');
    if (!isMountedRef.current) return;

    setIsListening(false);
    setRecordState('processing');
    stopAnimations();
  }, []);

  const onSpeechError = useCallback((error: any) => {
    console.log('语音识别错误:', error);
    if (!isMountedRef.current) return;

    setIsListening(false);
    setRecordState('idle');
    stopAnimations();

    // 显示更友好的错误信息
    if (error.error?.code === '7') {
      Alert.alert('提示', '没有检测到语音输入，请重试');
    } else if (error.error?.code === '2') {
      Alert.alert('提示', '网络连接异常，请检查网络后重试');
    } else {
      Alert.alert('提示', '语音识别出现问题，请重试');
    }
  }, []);

  const onSpeechResults = useCallback((event: any) => {
    console.log('语音识别结果:', event);
    if (!isMountedRef.current) return;

    const text = event.value?.[0] || '';
    if (text.trim()) {
      setRecognizedText(text);
      setRecordState('result');
    } else {
      setRecordState('idle');
      Alert.alert('提示', '未识别到有效内容，请重新录音');
    }
    stopAnimations();
  }, []);

  const onSpeechPartialResults = useCallback((event: any) => {
    if (!isMountedRef.current) return;

    const text = event.value?.[0] || '';
    setRecognizedText(text);
  }, []);

  const onSpeechVolumeChanged = useCallback((event: any) => {
    if (!isMountedRef.current) return;

    // 根据音量调整动画
    const volume = event.value || 0;
    const scale = 1 + (volume * 0.1);
    scaleAnimation.setValue(Math.min(scale, 1.5));
  }, []);

  useEffect(() => {
    // 初始化语音识别
    Voice.onSpeechStart = onSpeechStart;
    Voice.onSpeechRecognized = onSpeechRecognized;
    Voice.onSpeechEnd = onSpeechEnd;
    Voice.onSpeechError = onSpeechError;
    Voice.onSpeechResults = onSpeechResults;
    Voice.onSpeechPartialResults = onSpeechPartialResults;
    Voice.onSpeechVolumeChanged = onSpeechVolumeChanged;

    return () => {
      // 标记组件已卸载
      isMountedRef.current = false;

      // 清理进度定时器
      if (progressIntervalRef.current) {
        clearInterval(progressIntervalRef.current);
      }

      // 清理语音识别资源
      const cleanup = async () => {
        try {
          await Voice.stop();
          await Voice.destroy();
          Voice.removeAllListeners();
        } catch (error) {
          console.log('清理语音识别资源失败:', error);
        }
      };
      cleanup();
    };
  }, [onSpeechStart, onSpeechRecognized, onSpeechEnd, onSpeechError, onSpeechResults, onSpeechPartialResults, onSpeechVolumeChanged]);

  // 开始录音
  const startRecording = async () => {
    try {
      // 重置状态
      setRecognizedText('');
      setRecordState('idle');
      triggerHapticFeedback('impactMedium');

      // 确保之前的识别已停止
      await Voice.stop();

      // 添加短暂延迟确保资源清理完成
      await new Promise(resolve => setTimeout(resolve, 100));

      // 启动新的语音识别
      await Voice.start('zh-CN');

    } catch (error) {
      console.log('启动语音识别失败:', error);
      setRecordState('idle');
      setIsListening(false);
      Alert.alert('录音失败', '无法启动语音识别，请检查麦克风权限设置');
    }
  };

  // 停止录音
  const stopRecording = async () => {
    try {
      console.log('停止录音');
      setIsListening(false);
      await Voice.stop();
      triggerHapticFeedback('impactLight');
    } catch (error) {
      console.log('停止语音识别失败:', error);
      setIsListening(false);
      setRecordState('idle');
    }
  };

  // 重新录音
  const retryRecording = async () => {
    try {
      // 停止所有动画
      stopAnimations();

      // 重置所有状态
      setRecognizedText('');
      setAnalysisProgress(0);
      setIsListening(false);
      setRecordState('idle');

      // 确保语音识别已停止
      await Voice.stop();

      // 延迟一点再开始新的录音，确保状态完全重置
      setTimeout(() => {
        startRecording();
      }, 200);
    } catch (error) {
      console.log('重新录音失败:', error);
      setRecordState('idle');
      setIsListening(false);
    }
  };

  // 确认并分析食物文本
  const confirmResult = async () => {
    if (!recognizedText.trim()) {
      Alert.alert('提示', '请先进行语音识别');
      return;
    }

    try {
      triggerHapticFeedback('impactMedium');
      setRecordState('analyzing');
      setAnalysisProgress(0);

      // 启动科幻分析动画
      startAnalysisAnimation();

      // 模拟进度更新
      progressIntervalRef.current = setInterval(() => {
        if (!isMountedRef.current) {
          if (progressIntervalRef.current) {
            clearInterval(progressIntervalRef.current);
          }
          return;
        }

        setAnalysisProgress(prev => {
          if (prev >= 90) {
            if (progressIntervalRef.current) {
              clearInterval(progressIntervalRef.current);
            }
            return prev;
          }
          return prev + Math.random() * 15;
        });
      }, 500);

      // 调用文本分析API
      dispatch(setLoading(true));
      const result = await analyzeFoodFromText({ text: recognizedText });

      // 清理进度定时器
      if (progressIntervalRef.current) {
        clearInterval(progressIntervalRef.current);
      }

      if (!isMountedRef.current) return;

      setAnalysisProgress(100);

      // 生成识别结果ID并保存到Redux
      const recognitionId = `text_${Date.now()}`;
      dispatch(saveRecognitionResult({ id: recognitionId, result }));

      // 停止动画并导航到结果页面
      stopAnimations();

      // 延迟一点让用户看到100%完成
      setTimeout(() => {
        router.replace({
          pathname: '/food/analysis-result',
          params: {
            recognitionId,
            mealType: mealType,
            hideRecordBar: 'false'
          }
        });
      }, 800);

    } catch (error) {
      console.error('食物分析失败:', error);

      // 清理进度定时器
      if (progressIntervalRef.current) {
        clearInterval(progressIntervalRef.current);
      }

      if (!isMountedRef.current) return;

      stopAnimations();
      setRecordState('result');
      dispatch(setLoading(false));

      const errorMessage = error instanceof Error ? error.message : '分析失败，请重试';
      dispatch(setError(errorMessage));
      Alert.alert('分析失败', errorMessage);
    }
  };

  const handleBack = async () => {
    try {
      // 如果正在录音，先停止
      if (isListening) {
        await stopRecording();
      }

      // 停止所有动画
      stopAnimations();

      // 确保语音识别完全停止
      await Voice.stop();

      router.back();
    } catch (error) {
      console.log('返回时清理资源失败:', error);
      router.back();
    }
  };

  // 获取状态对应的UI文本
  const getStatusText = () => {
    switch (recordState) {
      case 'idle':
        return '轻触麦克风开始录音';
      case 'listening':
        return '正在聆听中，请开始说话...';
      case 'processing':
        return 'AI正在处理语音内容...';
      case 'analyzing':
        return 'AI大模型深度分析营养成分中...';
      case 'result':
        return '语音识别完成，请确认结果';
      default:
        return '';
    }
  };

  // 获取主按钮配置
  const getMainButtonConfig = () => {
    switch (recordState) {
      case 'idle':
        return {
          onPress: startRecording,
          color: '#7B68EE',
          icon: 'mic',
          size: 80,
        };
      case 'listening':
        return {
          onPress: stopRecording,
          color: '#FF6B6B',
          icon: 'stop',
          size: 80,
        };
      case 'processing':
        return {
          onPress: () => { },
          color: '#FFA07A',
          icon: 'hourglass',
          size: 80,
        };
      case 'analyzing':
        return {
          onPress: () => { },
          color: '#00D4AA',
          icon: 'analytics',
          size: 80,
        };
      case 'result':
        return {
          onPress: confirmResult,
          color: '#4ECDC4',
          icon: 'checkmark',
          size: 80,
        };
    }
  };

  const buttonConfig = getMainButtonConfig();

  return (
    <View style={[styles.container, { backgroundColor: colorTokens.background }]}>
      <HeaderBar
        title="一句话记录"
        onBack={handleBack}
        tone={theme}
        variant="elevated"
      />

      <View style={styles.content}>
        {/* 上半部分：介绍 */}
        <View style={styles.topSection}>
          <View style={styles.introContainer}>
            <Text style={[styles.introDescription, { color: colorTokens.textSecondary }]}>
              通过语音描述您的饮食内容，AI将智能分析营养成分和卡路里
            </Text>
          </View>
        </View>

        {/* 中间部分：录音动画区域 */}
        <View style={styles.middleSection}>
          <View style={styles.animationContainer}>
            {/* 背景波浪效果 */}
            {recordState === 'listening' && (
              <>
                {[1, 2, 3].map((index) => (
                  <Animated.View
                    key={index}
                    style={[
                      styles.waveRing,
                      {
                        transform: [
                          {
                            scale: waveAnimation.interpolate({
                              inputRange: [0, 1],
                              outputRange: [0.8, 2 + index * 0.3],
                            }),
                          },
                        ],
                        opacity: waveAnimation.interpolate({
                          inputRange: [0, 0.5, 1],
                          outputRange: [0.6, 0.3, 0],
                        }),
                      },
                    ]}
                  />
                ))}
              </>
            )}

            {/* 科幻分析特效 */}
            {recordState === 'analyzing' && (
              <>
                {/* 外光环 */}
                <Animated.View
                  style={[
                    styles.glowRing,
                    {
                      opacity: glowAnimation.interpolate({
                        inputRange: [0, 1],
                        outputRange: [0.3, 0.8],
                      }),
                      transform: [
                        {
                          scale: glowAnimation.interpolate({
                            inputRange: [0, 1],
                            outputRange: [1.2, 1.6],
                          }),
                        },
                      ],
                    },
                  ]}
                />
                {/* 内光环 */}
                <Animated.View
                  style={[
                    styles.innerGlowRing,
                    {
                      opacity: glowAnimation.interpolate({
                        inputRange: [0, 1],
                        outputRange: [0.5, 1],
                      }),
                      transform: [
                        {
                          scale: glowAnimation.interpolate({
                            inputRange: [0, 1],
                            outputRange: [0.9, 1.1],
                          }),
                        },
                      ],
                    },
                  ]}
                />
              </>
            )}

            {/* 主录音按钮 */}
            <Animated.View
              style={[
                styles.recordButton,
                {
                  backgroundColor: buttonConfig.color,
                  transform: [
                    { scale: scaleAnimation },
                    { scale: pulseAnimation },
                  ],
                },
              ]}
            >
              <TouchableOpacity
                style={styles.recordButtonInner}
                onPress={buttonConfig.onPress}
                activeOpacity={0.8}
                disabled={recordState === 'processing' || recordState === 'analyzing'}
              >
                <Ionicons
                  name={buttonConfig.icon as any}
                  size={buttonConfig.size}
                  color="white"
                />
              </TouchableOpacity>
            </Animated.View>
          </View>
        </View>

        {/* 下半部分：状态文本和示例 */}
        <View style={styles.bottomSection}>
          <View style={styles.statusContainer}>
            <Text style={[styles.statusText, { color: colorTokens.text }]}>
              {getStatusText()}
            </Text>

            {recordState === 'listening' && (
              <Text style={[styles.hintText, { color: colorTokens.textSecondary }]}>
                说出您想记录的食物内容
              </Text>
            )}

            {/* 食物记录示例 */}
            {recordState === 'idle' && (
              <BlurView intensity={20} tint={theme} style={styles.examplesContainer}>
                <View style={styles.examplesContent}>
                  <Text style={[styles.examplesTitle, { color: colorTokens.text }]}>
                    记录示例：
                  </Text>
                  <View style={styles.examplesList}>
                    <Text style={[styles.exampleText, { color: colorTokens.textSecondary }]}>
                      &ldquo;今早吃了两个煎蛋、一片全麦面包和一杯牛奶&rdquo;
                    </Text>
                    <Text style={[styles.exampleText, { color: colorTokens.textSecondary }]}>
                      &ldquo;午饭吃了红烧肉约150克、米饭一小碗、青菜一份&rdquo;
                    </Text>
                    <Text style={[styles.exampleText, { color: colorTokens.textSecondary }]}>
                      &ldquo;晚饭吃了蒸蛋羹、紫菜蛋花汤、小米粥一碗&rdquo;
                    </Text>
                  </View>
                </View>
              </BlurView>
            )}

            {recordState === 'analyzing' && (
              <View style={styles.analysisProgressContainer}>
                <Text style={[styles.progressText, { color: colorTokens.text }]}>
                  分析进度: {Math.round(analysisProgress)}%
                </Text>
                <View style={styles.progressBarContainer}>
                  <Animated.View
                    style={[
                      styles.progressBar,
                      {
                        width: progressAnimation.interpolate({
                          inputRange: [0, 1],
                          outputRange: ['0%', '100%'],
                        }),
                      },
                    ]}
                  />
                </View>
                <Text style={[styles.analysisHint, { color: colorTokens.textSecondary }]}>
                  AI正在深度分析您的食物描述...
                </Text>
              </View>
            )}
          </View>
        </View>

        {/* 识别结果 */}
        {recognizedText && (
          <BlurView intensity={20} tint={theme} style={styles.resultContainer}>
            <View style={styles.resultContent}>
              <Text style={[styles.resultLabel, { color: colorTokens.textSecondary }]}>
                识别结果:
              </Text>
              <Text style={[styles.resultText, { color: colorTokens.text }]}>
                {recognizedText}
              </Text>

              {recordState === 'result' && (
                <View style={styles.resultActions}>
                  <TouchableOpacity
                    style={[styles.actionButton, styles.retryButton]}
                    onPress={retryRecording}
                  >
                    <Ionicons name="refresh" size={16} color="#7B68EE" />
                    <Text style={styles.retryButtonText}>重新录音</Text>
                  </TouchableOpacity>

                  <TouchableOpacity
                    style={[styles.actionButton, styles.confirmButton]}
                    onPress={confirmResult}
                  >
                    <Ionicons name="checkmark" size={16} color="white" />
                    <Text style={styles.confirmButtonText}>确认使用</Text>
                  </TouchableOpacity>
                </View>
              )}
            </View>
          </BlurView>
        )}
      </View>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
  },
  content: {
    flex: 1,
    paddingHorizontal: 20,
    paddingTop: 20,
    paddingBottom: 40,
  },
  topSection: {
    alignItems: 'center',
    paddingBottom: 20,
  },
  middleSection: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
    minHeight: 200,
  },
  bottomSection: {
    alignItems: 'center',
  },
  introContainer: {
    alignItems: 'center',
    paddingHorizontal: 20,
  },
  introTitle: {
    fontSize: 24,
    fontWeight: 'bold',
    marginBottom: 8,
    textAlign: 'center',
  },
  introDescription: {
    fontSize: 16,
    lineHeight: 24,
    textAlign: 'center',
    paddingHorizontal: 10,
  },
  animationContainer: {
    alignItems: 'center',
    justifyContent: 'center',
    height: 200,
    width: 200,
    flex: 1,
  },
  waveRing: {
    position: 'absolute',
    width: 160,
    height: 160,
    borderRadius: 80,
    backgroundColor: 'rgba(123, 104, 238, 0.1)',
    borderWidth: 1,
    borderColor: 'rgba(123, 104, 238, 0.2)',
  },
  recordButton: {
    width: 160,
    height: 160,
    borderRadius: 80,
    alignItems: 'center',
    justifyContent: 'center',
    shadowColor: '#000',
    shadowOffset: {
      width: 0,
      height: 8,
    },
    shadowOpacity: 0.3,
    shadowRadius: 12,
    elevation: 12,
  },
  recordButtonInner: {
    width: '100%',
    height: '100%',
    alignItems: 'center',
    justifyContent: 'center',
    borderRadius: 80,
  },
  statusContainer: {
    alignItems: 'center',
    paddingHorizontal: 20,
  },
  statusText: {
    fontSize: 18,
    fontWeight: '600',
    marginBottom: 8,
  },
  hintText: {
    fontSize: 14,
    textAlign: 'center',
    lineHeight: 20,
  },
  examplesContainer: {
    marginTop: 24,
    marginHorizontal: 20,
    borderRadius: 16,
    overflow: 'hidden',
  },
  examplesContent: {
    padding: 20,
    backgroundColor: 'rgba(255, 255, 255, 0.9)',
    borderRadius: 16,
    alignItems: 'center',
  },
  examplesTitle: {
    fontSize: 16,
    fontWeight: '600',
    marginBottom: 16,
  },
  examplesList: {
    paddingHorizontal: 10,
    gap: 8,
  },
  exampleText: {
    fontSize: 14,
    lineHeight: 22,
    textAlign: 'center',
    paddingHorizontal: 12,
    paddingVertical: 8,
    marginVertical: 4,
  },
  resultContainer: {
    position: 'absolute',
    bottom: 100,
    left: 20,
    right: 20,
    borderRadius: 16,
    overflow: 'hidden',
  },
  resultContent: {
    padding: 20,
    backgroundColor: 'rgba(255, 255, 255, 0.9)',
    borderRadius: 16,
  },
  resultLabel: {
    fontSize: 12,
    fontWeight: '500',
    marginBottom: 8,
  },
  resultText: {
    fontSize: 16,
    fontWeight: '600',
    lineHeight: 24,
    marginBottom: 16,
  },
  resultActions: {
    flexDirection: 'row',
    gap: 12,
  },
  actionButton: {
    flex: 1,
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'center',
    paddingVertical: 12,
    paddingHorizontal: 16,
    borderRadius: 12,
    gap: 6,
  },
  retryButton: {
    backgroundColor: 'rgba(123, 104, 238, 0.1)',
    borderWidth: 1,
    borderColor: '#7B68EE',
  },
  confirmButton: {
    backgroundColor: '#7B68EE',
  },
  retryButtonText: {
    fontSize: 14,
    fontWeight: '500',
    color: '#7B68EE',
  },
  confirmButtonText: {
    fontSize: 14,
    fontWeight: '500',
    color: 'white',
  },
  // 科幻分析特效样式
  glowRing: {
    position: 'absolute',
    width: 200,
    height: 200,
    borderRadius: 100,
    backgroundColor: 'rgba(0, 212, 170, 0.1)',
    borderWidth: 2,
    borderColor: '#00D4AA',
    shadowColor: '#00D4AA',
    shadowOffset: { width: 0, height: 0 },
    shadowOpacity: 0.8,
    shadowRadius: 20,
  },
  innerGlowRing: {
    position: 'absolute',
    width: 180,
    height: 180,
    borderRadius: 90,
    backgroundColor: 'rgba(0, 212, 170, 0.05)',
    borderWidth: 1,
    borderColor: 'rgba(0, 212, 170, 0.3)',
  },
  analysisProgressContainer: {
    alignItems: 'center',
    marginTop: 20,
    paddingHorizontal: 20,
  },
  progressText: {
    fontSize: 16,
    fontWeight: '600',
    marginBottom: 12,
  },
  progressBarContainer: {
    width: '100%',
    height: 6,
    backgroundColor: 'rgba(0, 212, 170, 0.2)',
    borderRadius: 3,
    overflow: 'hidden',
    marginBottom: 8,
  },
  progressBar: {
    height: '100%',
    backgroundColor: '#00D4AA',
    borderRadius: 3,
    shadowColor: '#00D4AA',
    shadowOffset: { width: 0, height: 0 },
    shadowOpacity: 0.8,
    shadowRadius: 4,
  },
  analysisHint: {
    fontSize: 14,
    textAlign: 'center',
    lineHeight: 20,
    fontStyle: 'italic',
  },
});