import React, { useState } from 'react';
import {
  Text,
  View,
  TouchableOpacity,
  ScrollView,
  Switch,
  Image,
} from 'react-native';
import { useNavigation } from '@react-navigation/native';
import Icon from 'react-native-vector-icons/Ionicons';
import { getStyles } from './profile.styles';
import { useTheme } from '../../theme';
import { ProfileInfoRow } from '@components';
import { useAppDispatch, useAppSelector, logout, RootState } from '@store';

export const ProfileScreen = () => {
  const navigation = useNavigation<any>();
  const { theme: colors, isDark, toggleTheme } = useTheme();
  const styles = getStyles(colors);
  const dispatch = useAppDispatch();
  const [pushEnabled, setPushEnabled] = useState(true);

  const userData = useAppSelector((state: RootState) => state.auth.user_data);

  const handleLogout = async () => {
    try {
      dispatch(logout());
    } catch (e) {
      console.error(e);
    }
    navigation.reset({
      index: 0,
      routes: [{ name: 'AuthStack' }],
    });
  };

  // Derive user info
  const fullName =
    userData?.full_name ||
    `${userData?.firstname || ''} ${userData?.lastname || ''}`.trim() ||
    'User Profile';

  const email = userData?.email || 'N/A';
  const phone = userData?.phonenumber || 'N/A';
  const staffId = userData?.staffid ? `#${userData.staffid}` : 'N/A';
  const isAdmin = userData?.admin === '1';
  const roleText = isAdmin ? 'Administrator' : 'Staff Member';
  const isActive = userData?.active === '1';
  const hasProfileImage =
    userData?.profile_image && userData.profile_image.startsWith('http');

  // Derive initials
  const initials = fullName
    .split(' ')
    .filter(Boolean)
    .map(n => n[0])
    .join('')
    .substring(0, 2)
    .toUpperCase() || 'U';

  const hasSocials =
    Boolean(userData?.linkedin) ||
    Boolean(userData?.facebook) ||
    Boolean(userData?.skype);

  return (
    <ScrollView style={styles.container} contentContainerStyle={styles.content}>
      {/* ── Header Card ── */}
      <View style={styles.headerCard}>
        <View style={styles.avatarWrapper}>
          {hasProfileImage ? (
            <Image
              source={{ uri: userData!.profile_image }}
              style={styles.avatarImage}
            />
          ) : (
            <View style={styles.avatarCircle}>
              <Text style={styles.avatarInitial}>{initials}</Text>
            </View>
          )}
          {isActive && <View style={styles.onlineDot} />}
        </View>

        <Text style={styles.profileName}>{fullName}</Text>
        <Text style={styles.profileEmail}>{email}</Text>

        <View style={styles.roleBadge}>
          <Text style={styles.roleBadgeText}>{roleText}</Text>
        </View>
      </View>

      {/* ── Stats Summary Row ── */}
      <View style={styles.statsRow}>
        <View style={styles.statBox}>
          <Text style={styles.statValue}>{userData?.staffid || '—'}</Text>
          <Text style={styles.statLabel}>Staff ID</Text>
        </View>
        <View style={styles.statBox}>
          <Text style={styles.statValue}>
            {userData?.total_unfinished_todos ?? '0'}
          </Text>
          <Text style={styles.statLabel}>Pending Todos</Text>
        </View>
        <View style={styles.statBox}>
          <Text style={styles.statValue}>
            {userData?.total_unread_notifications ?? '0'}
          </Text>
          <Text style={styles.statLabel}>Unread Alerts</Text>
        </View>
      </View>

      {/* ── Personal Details ── */}
      <View style={styles.sectionCard}>
        <Text style={styles.sectionHeader}>Personal Details</Text>
        <ProfileInfoRow
          icon="person-outline"
          label="Name"
          value={fullName}
        />
        <ProfileInfoRow
          icon="card-outline"
          label="Staff ID"
          value={staffId}
        />
        <ProfileInfoRow
          icon="mail-outline"
          label="Email"
          value={email}
        />
        <ProfileInfoRow
          icon="call-outline"
          label="Phone"
          value={phone}
        />
        <ProfileInfoRow
          icon="shield-checkmark-outline"
          label="Role"
          value={roleText}
          isLast
        />
      </View>

      {/* ── System & Account ── */}
      <View style={styles.sectionCard}>
        <Text style={styles.sectionHeader}>System &amp; Account</Text>
        <ProfileInfoRow
          icon="checkmark-circle-outline"
          label="Account Status"
          value={isActive ? 'Active' : 'Inactive'}
          valueColor={isActive ? '#10B981' : '#EF4444'}
          isBadge
          badgeBgColor={isActive ? '#10B98120' : '#EF444420'}
        />
        <ProfileInfoRow
          icon="key-outline"
          label="Two-Factor Auth"
          value={
            userData?.two_factor_auth_enabled === '1'
              ? 'Enabled'
              : 'Disabled'
          }
        />
        {userData?.default_language ? (
          <ProfileInfoRow
            icon="language-outline"
            label="Default Language"
            value={userData.default_language.toUpperCase()}
          />
        ) : null}
        <ProfileInfoRow
          icon="time-outline"
          label="Last Login"
          value={userData?.last_login || 'N/A'}
          isLast
        />
      </View>

      {/* ── Social Profiles ── */}
      {hasSocials && (
        <View style={styles.sectionCard}>
          <Text style={styles.sectionHeader}>Social Profiles</Text>
          {userData?.linkedin ? (
            <ProfileInfoRow
              icon="logo-linkedin"
              label="LinkedIn"
              value={userData.linkedin}
            />
          ) : null}
          {userData?.facebook ? (
            <ProfileInfoRow
              icon="logo-facebook"
              label="Facebook"
              value={userData.facebook}
            />
          ) : null}
          {userData?.skype ? (
            <ProfileInfoRow
              icon="logo-skype"
              label="Skype"
              value={userData.skype}
              isLast
            />
          ) : null}
        </View>
      )}

      {/* ── Preferences ── */}
      <View style={styles.sectionCard}>
        <Text style={styles.sectionHeader}>Preferences</Text>

        <View style={styles.preferenceRow}>
          <View style={styles.preferenceLabelGroup}>
            <View style={styles.iconWrapper}>
              <Icon
                name={isDark ? 'moon' : 'moon-outline'}
                size={18}
                color={colors.icon}
              />
            </View>
            <Text style={styles.preferenceText}>Dark Mode</Text>
          </View>
          <Switch
            value={isDark}
            onValueChange={toggleTheme}
            trackColor={{ false: '#767577', true: colors.icon }}
            thumbColor={isDark ? '#ffffff' : '#f4f3f4'}
          />
        </View>

        {/* <TouchableOpacity style={styles.preferenceRow} activeOpacity={0.7}>
          <View style={styles.preferenceLabelGroup}>
            <View style={styles.iconWrapper}>
              <Icon
                name="notifications-outline"
                size={18}
                color={colors.icon}
              />
            </View>
            <Text style={styles.preferenceText}>Push Notifications</Text>
          </View>
          <Icon name="chevron-forward" size={18} color={colors.textMuted} />
        </TouchableOpacity> */}

        <View style={[styles.preferenceRow, styles.noBorder]}>
          <View style={styles.preferenceLabelGroup}>
            <View style={styles.iconWrapper}>
              <Icon name="notifications-outline" size={18} color={colors.icon} />
            </View>
            <Text style={styles.preferenceText}>Push Notifications</Text>
          </View>
          <Switch
            value={pushEnabled}
            onValueChange={setPushEnabled}
            trackColor={{ false: '#767577', true: colors.icon }}
            thumbColor={pushEnabled ? '#ffffff' : '#f4f3f4'}
          />
        </View>
      </View>

      {/* ── Sign Out ── */}
      <TouchableOpacity
        style={styles.signOutButton}
        activeOpacity={0.8}
        onPress={handleLogout}>
        <Icon
          name="log-out-outline"
          size={20}
          color="#FFFFFF"
          style={styles.buttonIcon}
        />
        <Text style={styles.signOutButtonText}>Sign Out</Text>
      </TouchableOpacity>
    </ScrollView>
  );
};