import React, { useEffect, useMemo } from "react";
import { View, Text, StyleSheet, Platform } from "react-native";
import { Ionicons } from "@expo/vector-icons";
import { useI18n } from "@/hooks/use-i18n";
import { useThemeContext } from "@/hooks/use-theme-context";
import { useShip } from "@/state/use-ship";
import { usePort } from "@/state/use-ports";
import { useGroup } from "@/state/use-group";
import { filterPortsByProvinceCode } from "@/utils/tripDataConverters";

interface BasicInfoSectionProps {
  trip: Model.Trip;
}

/**
 * Displays basic trip information like ship, dates, ports
 */
export default function BasicInfoSection({ trip }: BasicInfoSectionProps) {
  const { t } = useI18n();
  const { colors } = useThemeContext();

  // Get data from zustand stores
  const { ships, getShip } = useShip();
  const { ports, getPorts } = usePort();
  const { groups, getUserGroups } = useGroup();

  // Fetch data if not available
  useEffect(() => {
    if (!ships) {
      getShip();
    }
  }, [ships, getShip]);

  useEffect(() => {
    if (!ports) {
      getPorts();
    }
  }, [ports, getPorts]);

  useEffect(() => {
    if (!groups) {
      getUserGroups();
    }
  }, [groups, getUserGroups]);

  // Filter ports by province codes from groups
  const filteredPorts = useMemo(() => {
    return filterPortsByProvinceCode(ports, groups);
  }, [ports, groups]);

  // Get ship name by ship_id
  const shipName = useMemo(() => {
    if (!trip?.ship_id || !ships) return "--";
    const ship = ships.find((s) => s.id === trip.ship_id);
    return ship?.name || "--";
  }, [trip?.ship_id, ships]);

  // Get ship code (reg_number) by ship_id
  const shipCode = useMemo(() => {
    if (!trip?.ship_id || !ships) return "--";
    const ship = ships.find((s) => s.id === trip.ship_id);
    return ship?.reg_number || "--";
  }, [trip?.ship_id, ships]);

  // Get port name by ID
  const getPortName = (portId: number): string => {
    const port = filteredPorts.find((p) => p.id === portId);
    return port?.name || "--";
  };

  const formatDateTime = (dateStr?: string) => {
    if (!dateStr) return "--";
    const date = new Date(dateStr);
    return date.toLocaleString("vi-VN", {
      day: "2-digit",
      month: "2-digit",
      year: "numeric",
      hour: "2-digit",
      minute: "2-digit",
    });
  };

  const infoItems = [
    {
      icon: "boat" as const,
      label: t("diary.tripDetail.shipName"),
      value: shipName,
    },
    {
      icon: "barcode" as const,
      label: t("diary.tripDetail.shipCode"),
      value: shipCode,
    },
    {
      icon: "play-circle" as const,
      label: t("diary.tripDetail.departureTime"),
      value: formatDateTime(trip.departure_time),
    },
    {
      icon: "stop-circle" as const,
      label: t("diary.tripDetail.arrivalTime"),
      value: formatDateTime(trip.arrival_time),
    },
    {
      icon: "location" as const,
      label: t("diary.tripDetail.departurePort"),
      value: getPortName(trip.departure_port_id),
    },
    {
      icon: "flag" as const,
      label: t("diary.tripDetail.arrivalPort"),
      value: getPortName(trip.arrival_port_id),
    },
    {
      icon: "map" as const,
      label: t("diary.tripDetail.fishingGrounds"),
      value:
        trip.fishing_ground_codes?.length > 0
          ? trip.fishing_ground_codes.join(", ")
          : "--",
    },
  ];

  return (
    <View
      style={[
        styles.container,
        { backgroundColor: colors.card, borderColor: colors.separator },
      ]}
    >
      <View style={styles.header}>
        <Ionicons
          name="information-circle-outline"
          size={20}
          color={colors.primary}
        />
        <Text style={[styles.title, { color: colors.text }]}>
          {t("diary.tripDetail.basicInfo")}
        </Text>
      </View>
      <View style={styles.content}>
        {infoItems.map((item, index) => (
          <View key={index} style={styles.infoItem}>
            <View style={styles.infoLabel}>
              <Ionicons
                name={item.icon}
                size={16}
                color={colors.textSecondary}
              />
              <Text
                style={[styles.infoLabelText, { color: colors.textSecondary }]}
              >
                {item.label}
              </Text>
            </View>
            <Text style={[styles.infoValue, { color: colors.text }]}>
              {item.value}
            </Text>
          </View>
        ))}
      </View>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    borderRadius: 12,
    borderWidth: 1,
    marginBottom: 16,
    overflow: "hidden",
  },
  header: {
    flexDirection: "row",
    alignItems: "center",
    gap: 10,
    paddingHorizontal: 16,
    paddingVertical: 14,
  },
  title: {
    fontSize: 16,
    fontWeight: "600",
    fontFamily: Platform.select({
      ios: "System",
      android: "Roboto",
      default: "System",
    }),
  },
  content: {
    paddingHorizontal: 16,
    paddingBottom: 16,
    gap: 12,
  },
  infoItem: {
    flexDirection: "row",
    justifyContent: "space-between",
    alignItems: "center",
  },
  infoLabel: {
    flexDirection: "row",
    alignItems: "center",
    gap: 8,
  },
  infoLabelText: {
    fontSize: 13,
    fontFamily: Platform.select({
      ios: "System",
      android: "Roboto",
      default: "System",
    }),
  },
  infoValue: {
    fontSize: 13,
    fontWeight: "500",
    fontFamily: Platform.select({
      ios: "System",
      android: "Roboto",
      default: "System",
    }),
  },
});