import { Ionicons } from "@expo/vector-icons";
import { router } from "expo-router";
import { Pressable, View } from "react-native";
import { useSafeAreaInsets } from "react-native-safe-area-context";
import { Avatar } from "@/components/ui/Avatar";
import { Text } from "@/components/ui/Text";
import { routes } from "@/lib/routes";
import { useAuthStore } from "@/lib/stores/authStore";
import { useNotificationStore } from "@/lib/stores/notificationStore";
import { colors, gutter } from "@/lib/theme";

function greetingForNow() {
  const hour = new Date().getHours();
  if (hour < 12) return "Good morning";
  if (hour < 17) return "Good afternoon";
  return "Good evening";
}

/** Shared top bar for all bottom-tab screens (avatar → profile, bell → notifications). */
export function TabTopBar({
  subtitle,
}: {
  /** Optional line under the user name, e.g. the current tab context */
  subtitle?: string;
}) {
  const insets = useSafeAreaInsets();
  const user = useAuthStore((s) => s.user);
  const unread = useNotificationStore((s) => s.unreadCount());

  return (
    <View
      style={{
        paddingTop: insets.top + 10,
        paddingHorizontal: gutter,
        paddingBottom: 10,
        backgroundColor: colors.page,
      }}
    >
      <View
        style={{
          flexDirection: "row",
          justifyContent: "space-between",
          alignItems: "center",
        }}
      >
        <Pressable
          onPress={() => router.push(routes.profile)}
          style={{ flexDirection: "row", alignItems: "center", gap: 12, flex: 1 }}
          accessibilityRole="button"
          accessibilityLabel="Open profile"
        >
          <Avatar name={user?.name} uri={user?.avatarUri} size={46} />
          <View style={{ flex: 1 }}>
            <Text variant="caption" color={colors.subtle}>
              {subtitle || greetingForNow()}
            </Text>
            <Text variant="h3" numberOfLines={1}>
              {user?.name?.split(" ")[0] || "Guest"}
            </Text>
          </View>
        </Pressable>

        <Pressable
          onPress={() => router.push(routes.notifications)}
          accessibilityRole="button"
          accessibilityLabel="Notifications"
          style={{
            width: 44,
            height: 44,
            borderRadius: 22,
            backgroundColor: colors.surface,
            borderWidth: 1,
            borderColor: colors.line,
            alignItems: "center",
            justifyContent: "center",
          }}
        >
          <Ionicons name="notifications-outline" size={20} color={colors.ink} />
          {unread > 0 ? (
            <View
              style={{
                position: "absolute",
                top: 8,
                right: 9,
                minWidth: 16,
                height: 16,
                borderRadius: 8,
                backgroundColor: colors.danger,
                alignItems: "center",
                justifyContent: "center",
                paddingHorizontal: 3,
              }}
            >
              <Text variant="micro" color={colors.surface}>
                {unread > 9 ? "9+" : unread}
              </Text>
            </View>
          ) : null}
        </Pressable>
      </View>
    </View>
  );
}