import { router } from "expo-router";
import { Platform, Pressable, StyleSheet, Text, View } from "react-native";

import { fonts } from "@/constants/theme";
import { useAppTheme } from "@/contexts/ThemeContext";
import { formatElapsedHoursMinutes } from "@/lib/time-clock";
import { useRunningElapsed } from "@/lib/use-running-elapsed";
import { api } from "@/lib/trpc";

/** Green dot + elapsed time when a timer is running; tappable to open the clock. */
export function ClockedInIndicator() {
  const { colors } = useAppTheme();
  const runningQuery = api.timeEntries.getRunning.useQuery(undefined, {
    refetchInterval: 30_000,
  });
  const running = runningQuery.data;
  const elapsed = useRunningElapsed(running?.startedAt);

  if (!running) return null;

  const label = formatElapsedHoursMinutes(elapsed);

  return (
    <Pressable
      accessibilityRole="button"
      accessibilityLabel={`Clocked in, ${label}`}
      hitSlop={8}
      onPress={() => router.push("/(app)/timer")}
      style={styles.hit}
    >
      <View style={[styles.row, { backgroundColor: colors.successBg }]}>
        <View style={[styles.dot, { backgroundColor: colors.success }]} />
        <Text style={[styles.time, { color: colors.foreground }]}>{label}</Text>
      </View>
    </Pressable>
  );
}

const styles = StyleSheet.create({
  hit: {
    flexShrink: 0,
  },
  row: {
    flexDirection: "row",
    alignItems: "center",
    justifyContent: "center",
    gap: 6,
    paddingHorizontal: 10,
    minHeight: 28,
    borderRadius: 999,
  },
  dot: {
    width: 7,
    height: 7,
    borderRadius: 4,
  },
  time: {
    fontFamily: fonts.mono,
    fontSize: 14,
    lineHeight: 18,
    fontVariant: ["tabular-nums"],
    ...(Platform.OS === "android" ? { includeFontPadding: false } : null),
  },
});