import { Ionicons } from '@expo/vector-icons';
import { LinearGradient } from 'expo-linear-gradient';
import { useRouter } from 'expo-router';
import {
  ActivityIndicator,
  Pressable,
  ScrollView,
  StyleSheet,
  Text,
  View,
} from 'react-native';
import { SafeAreaView } from 'react-native-safe-area-context';
import { useProfileData } from '../../src/hooks';
import { colors } from '../../src/theme';
import type { Badge, DimensionScore, JobPreference } from '../../src/types';

/* ===================== 展示层映射（全部使用主题令牌） ===================== */

/** 维度等级 → 展示配置（优秀=品牌蓝，良好=灰色） */
const DIMENSION_LEVEL: Record<
  DimensionScore['level'],
  { label: string; bar: string; bg: string; text: string }
> = {
  excellent: { label: '优秀', bar: colors.primary, bg: colors.primaryLight, text: colors.primaryDark },
  good: { label: '良好', bar: colors.textHint, bg: colors.pageBg, text: colors.textSecondary },
};

/** 求职偏好字段 → 展示标签 */
const PREF_ITEMS: { key: keyof JobPreference; label: string }[] = [
  { key: 'position', label: '期望职位' },
  { key: 'city', label: '期望城市' },
  { key: 'salary', label: '期望薪资' },
  { key: 'workType', label: '工作类型' },
  { key: 'status', label: '求职状态' },
];

/* ===================== 子组件 ===================== */

/** 单个维度评分行（横向评分条） */
function DimensionRow({ dimension }: { dimension: DimensionScore }) {
  const theme = DIMENSION_LEVEL[dimension.level];
  return (
    <View style={styles.dimRow}>
      <Text style={styles.dimName}>{dimension.name}</Text>
      <View style={styles.dimTrack}>
        <View style={[styles.dimFill, { width: `${dimension.score}%`, backgroundColor: theme.bar }]} />
      </View>
      <Text style={styles.dimScore}>{dimension.score}</Text>
      <View style={[styles.levelTag, { backgroundColor: theme.bg }]}>
        <Text style={[styles.levelTagText, { color: theme.text }]}>{theme.label}</Text>
      </View>
    </View>
  );
}

/** 单个勋章卡片（已获得=彩色，未获得=灰色+进度条） */
function BadgeCard({ badge }: { badge: Badge }) {
  return (
    <View style={styles.badgeCard}>
      <Text style={[styles.badgeIcon, !badge.obtained && styles.badgeIconLocked]}>
        {badge.icon}
      </Text>
      <Text style={[styles.badgeTitle, !badge.obtained && styles.badgeTitleLocked]}>
        {badge.title}
      </Text>
      <Text style={styles.badgeDesc}>{badge.description}</Text>
      {badge.obtained ? (
        <View style={styles.badgeObtainedTag}>
          <Text style={styles.badgeObtainedText}>已获得</Text>
        </View>
      ) : (
        <>
          <View style={styles.badgeProgressTrack}>
            <View
              style={[
                styles.badgeProgressFill,
                { width: `${((badge.progress ?? 0) / (badge.target ?? 1)) * 100}%` },
              ]}
            />
          </View>
          <Text style={styles.badgeProgressText}>
            {badge.progress}/{badge.target}
          </Text>
        </>
      )}
    </View>
  );
}

/**
 * 我的页
 */
export default function ProfileScreen() {
  const { profile, overallScore, dimensions, preference, badges, loading, error, refresh } =
    useProfileData();
  const router = useRouter();

  // 错误态
  if (error) {
    return (
      <SafeAreaView style={styles.safeArea} edges={['top']}>
        <View style={styles.stateWrap}>
          <Text style={styles.stateText}>加载失败，请重试</Text>
          <Pressable style={styles.retryBtn} onPress={refresh}>
            <Text style={styles.retryText}>重试</Text>
          </Pressable>
        </View>
      </SafeAreaView>
    );
  }

  // 加载态
  if (loading || !profile || !overallScore || !preference) {
    return (
      <SafeAreaView style={styles.safeArea} edges={['top']}>
        <View style={styles.stateWrap}>
          <ActivityIndicator size="large" color={colors.primary} />
        </View>
      </SafeAreaView>
    );
  }

  return (
    <SafeAreaView style={styles.safeArea} edges={['top']}>
      <ScrollView
        style={styles.scroll}
        contentContainerStyle={styles.scrollContent}
        showsVerticalScrollIndicator={false}
      >
        {/* 顶部渐变头部：标题 + 用户信息（随页面滚动） */}
        <LinearGradient
          colors={[colors.primary, colors.primaryBright]}
          start={{ x: 0, y: 0 }}
          end={{ x: 1, y: 1 }}
          style={styles.headerGradient}
        >
          <View style={styles.headerRow}>
            <Text style={styles.headerTitle}>我的</Text>
            <Pressable onPress={() => router.push('/settings')} hitSlop={8}>
              <Ionicons name="settings-outline" size={22} color={colors.white} />
            </Pressable>
          </View>
          <View style={styles.profileRow}>
            <View style={styles.avatar}>
              <Text style={styles.avatarText}>{profile.avatar}</Text>
            </View>
            <View style={styles.profileInfo}>
              <Text style={styles.userName}>{profile.name}</Text>
              <Text style={styles.bio}>{profile.bio}</Text>
            </View>
          </View>
        </LinearGradient>

        {/* 内容区 */}
        <View style={styles.content}>
          {/* 综合评分卡片 */}
        <View style={styles.scoreCard}>
          <Text style={styles.scoreValue}>
            {overallScore.score}
            <Text style={styles.scoreUnit}>分</Text>
          </Text>
          <View style={styles.scoreTag}>
            <Text style={styles.scoreTagText}>{overallScore.level}</Text>
          </View>
          <Text style={styles.scoreRank}>{overallScore.rank}</Text>
        </View>

        {/* 八大维度评分 */}
        <View style={styles.sectionHeader}>
          <View style={styles.sectionBar} />
          <Text style={[styles.sectionTitle, styles.sectionTitleGrow]}>八大维度评分</Text>
          <Pressable onPress={() => console.log('评分申诉')} hitSlop={6}>
            <Text style={styles.sectionLink}>评分申诉</Text>
          </Pressable>
        </View>
        <View style={styles.dimCard}>
          {dimensions.map((dimension) => (
            <DimensionRow key={dimension.id} dimension={dimension} />
          ))}
        </View>

        {/* 求职偏好 */}
        <View style={styles.sectionHeader}>
          <View style={styles.sectionBar} />
          <Text style={[styles.sectionTitle, styles.sectionTitleGrow]}>求职偏好</Text>
          <Pressable onPress={() => console.log('编辑求职偏好')} hitSlop={6}>
            <Text style={styles.sectionLink}>编辑</Text>
          </Pressable>
        </View>
        <View style={styles.prefCard}>
          {PREF_ITEMS.map(({ key, label }, index) => {
            const value = preference[key];
            const isLast = index === PREF_ITEMS.length - 1;
            const isStatus = key === 'status';
            return (
              <Pressable
                key={key}
                style={[styles.prefRow, isLast && styles.prefRowLast]}
                onPress={() => console.log(`编辑${label}`)}
              >
                <Text style={styles.prefLabel}>{label}</Text>
                {isStatus ? (
                  <View style={styles.prefStatus}>
                    <View style={styles.prefStatusDot} />
                    <Text style={styles.prefStatusText}>{value}</Text>
                  </View>
                ) : (
                  <Text style={styles.prefValue}>{value}</Text>
                )}
              </Pressable>
            );
          })}
        </View>

        {/* 全部勋章 */}
        <View style={styles.sectionHeader}>
          <View style={styles.sectionBar} />
          <Text style={[styles.sectionTitle, styles.sectionTitleGrow]}>全部勋章</Text>
        </View>
        <ScrollView
          horizontal
          showsHorizontalScrollIndicator={false}
          style={styles.hScroll}
          contentContainerStyle={styles.hScrollContent}
        >
          {badges.map((badge) => (
            <BadgeCard key={badge.id} badge={badge} />
          ))}
        </ScrollView>
        </View>
      </ScrollView>
    </SafeAreaView>
  );
}

// 跨平台阴影
const shadow = {
  shadowColor: colors.textPrimary,
  shadowOffset: { width: 0, height: 2 },
  shadowOpacity: 0.06,
  shadowRadius: 8,
  elevation: 3,
};

const styles = StyleSheet.create({
  safeArea: {
    flex: 1,
    backgroundColor: colors.pageBg,
  },
  stateWrap: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
  },
  stateText: {
    marginTop: 12,
    fontSize: 14,
    color: colors.textSecondary,
  },
  retryBtn: {
    marginTop: 16,
    paddingHorizontal: 24,
    paddingVertical: 8,
    borderRadius: 18,
    backgroundColor: colors.primaryBtn,
  },
  retryText: {
    fontSize: 13,
    fontWeight: '600',
    color: colors.white,
  },
  /* ---- 顶部渐变头部 ---- */
  headerGradient: {
    paddingHorizontal: 20,
    paddingTop: 8,
    paddingBottom: 24,
    borderBottomLeftRadius: 24,
    borderBottomRightRadius: 24,
  },
  headerRow: {
    height: 40,
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'space-between',
  },
  headerTitle: {
    fontSize: 17,
    fontWeight: '700',
    color: colors.white,
  },
  profileRow: {
    flexDirection: 'row',
    alignItems: 'center',
    marginTop: 8,
  },
  avatar: {
    width: 60,
    height: 60,
    borderRadius: 30,
    backgroundColor: colors.white,
    alignItems: 'center',
    justifyContent: 'center',
  },
  avatarText: {
    fontSize: 26,
    fontWeight: '700',
    color: colors.primary,
  },
  profileInfo: {
    marginLeft: 14,
  },
  userName: {
    fontSize: 20,
    fontWeight: '700',
    color: colors.white,
  },
  bio: {
    marginTop: 6,
    fontSize: 13,
    color: colors.white,
    opacity: 0.85,
  },
  /* ---- 内容区 ---- */
  scroll: {
    flex: 1,
  },
  scrollContent: {
    paddingBottom: 24,
  },
  content: {
    paddingHorizontal: 20,
    paddingTop: 16,
  },
  /* ---- 综合评分卡片 ---- */
  scoreCard: {
    flexDirection: 'row',
    alignItems: 'center',
    backgroundColor: colors.white,
    borderRadius: 16,
    paddingHorizontal: 20,
    paddingVertical: 20,
    ...shadow,
  },
  scoreValue: {
    fontSize: 40,
    fontWeight: '700',
    color: colors.primaryDark,
  },
  scoreUnit: {
    fontSize: 16,
    fontWeight: '600',
    color: colors.primaryDark,
  },
  scoreTag: {
    marginLeft: 12,
    backgroundColor: colors.primaryLight,
    paddingHorizontal: 10,
    paddingVertical: 4,
    borderRadius: 12,
  },
  scoreTagText: {
    fontSize: 13,
    fontWeight: '600',
    color: colors.primaryDark,
  },
  scoreRank: {
    flex: 1,
    textAlign: 'right',
    marginLeft: 12,
    fontSize: 13,
    color: colors.textSecondary,
  },
  /* ---- 分区标题 ---- */
  sectionHeader: {
    flexDirection: 'row',
    alignItems: 'center',
    marginTop: 24,
    marginBottom: 12,
  },
  sectionBar: {
    width: 4,
    height: 16,
    borderRadius: 2,
    backgroundColor: colors.primary,
    marginRight: 8,
  },
  sectionTitle: {
    fontSize: 18,
    fontWeight: '700',
    color: colors.textPrimary,
  },
  sectionTitleGrow: {
    flex: 1,
  },
  sectionLink: {
    fontSize: 13,
    color: colors.primary,
  },
  /* ---- 八大维度（横向评分条） ---- */
  dimCard: {
    backgroundColor: colors.white,
    borderRadius: 16,
    paddingHorizontal: 16,
    paddingVertical: 6,
    ...shadow,
  },
  dimRow: {
    flexDirection: 'row',
    alignItems: 'center',
    paddingVertical: 12,
  },
  dimName: {
    width: 78,
    fontSize: 13,
    color: colors.textSecondary,
  },
  dimTrack: {
    flex: 1,
    height: 6,
    borderRadius: 3,
    backgroundColor: colors.border,
    marginHorizontal: 12,
  },
  dimFill: {
    height: 6,
    borderRadius: 3,
  },
  dimScore: {
    width: 28,
    textAlign: 'right',
    fontSize: 14,
    fontWeight: '700',
    color: colors.textPrimary,
  },
  levelTag: {
    marginLeft: 10,
    paddingHorizontal: 8,
    paddingVertical: 2,
    borderRadius: 10,
  },
  levelTagText: {
    fontSize: 11,
    fontWeight: '600',
  },
  /* ---- 求职偏好 ---- */
  prefCard: {
    backgroundColor: colors.white,
    borderRadius: 16,
    paddingHorizontal: 16,
    paddingVertical: 6,
    ...shadow,
  },
  prefRow: {
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'space-between',
    paddingVertical: 12,
    borderBottomWidth: 1,
    borderBottomColor: colors.borderLight,
  },
  prefRowLast: {
    borderBottomWidth: 0,
  },
  prefLabel: {
    fontSize: 14,
    color: colors.textSecondary,
  },
  prefValue: {
    fontSize: 14,
    fontWeight: '600',
    color: colors.textPrimary,
  },
  prefStatus: {
    flexDirection: 'row',
    alignItems: 'center',
  },
  prefStatusDot: {
    width: 8,
    height: 8,
    borderRadius: 4,
    backgroundColor: colors.success,
    marginRight: 6,
  },
  prefStatusText: {
    fontSize: 14,
    fontWeight: '600',
    color: colors.successText,
  },
  /* ---- 全部勋章 ---- */
  hScroll: {
    flexGrow: 0,
    marginHorizontal: -20,
  },
  hScrollContent: {
    paddingHorizontal: 20,
    gap: 12,
  },
  badgeCard: {
    width: 140,
    backgroundColor: colors.white,
    borderRadius: 16,
    padding: 16,
    alignItems: 'center',
    ...shadow,
  },
  badgeIcon: {
    fontSize: 32,
  },
  badgeIconLocked: {
    opacity: 0.35,
  },
  badgeTitle: {
    marginTop: 10,
    fontSize: 14,
    fontWeight: '700',
    color: colors.textPrimary,
  },
  badgeTitleLocked: {
    color: colors.textHint,
  },
  badgeDesc: {
    marginTop: 4,
    fontSize: 12,
    color: colors.textSecondary,
    textAlign: 'center',
  },
  badgeObtainedTag: {
    marginTop: 10,
    backgroundColor: colors.successLight,
    paddingHorizontal: 10,
    paddingVertical: 3,
    borderRadius: 10,
  },
  badgeObtainedText: {
    fontSize: 11,
    fontWeight: '600',
    color: colors.successText,
  },
  badgeProgressTrack: {
    width: '100%',
    height: 4,
    borderRadius: 2,
    backgroundColor: colors.border,
    marginTop: 12,
  },
  badgeProgressFill: {
    height: 4,
    borderRadius: 2,
    backgroundColor: colors.primary,
  },
  badgeProgressText: {
    marginTop: 6,
    fontSize: 11,
    color: colors.textHint,
  },
});