Ichitux
443 lines
14 KiB
TypeScript
443 lines
14 KiB
TypeScript
import React, { useEffect, useState, useMemo } from 'react';
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import { View, Text, ScrollView, StyleSheet, TouchableOpacity, Linking } from 'react-native';
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import { useLocalSearchParams, useRouter } from 'expo-router';
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import { Ionicons } from '@expo/vector-icons';
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import * as Location from 'expo-location';
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import { getMedicine, getMedicinePharmacies } from '../../services/medicines';
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import { StockBadge } from '../../components/StockBadge';
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import { LoadingSpinner } from '../../components/LoadingSpinner';
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import { useThemeContext } from '../../components/ThemeProvider';
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import { spacing, borderRadius } from '../../constants/theme';
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import { Medicine, PharmacyMedicine } from '../../types';
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function haversineKm(lat1: number, lon1: number, lat2: number, lon2: number): number {
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const R = 6371;
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const dLat = ((lat2 - lat1) * Math.PI) / 180;
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const dLon = ((lon2 - lon1) * Math.PI) / 180;
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const a =
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Math.sin(dLat / 2) ** 2 +
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Math.cos((lat1 * Math.PI) / 180) *
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Math.cos((lat2 * Math.PI) / 180) *
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Math.sin(dLon / 2) ** 2;
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return R * 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
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}
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function formatDistance(km: number): string {
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if (km < 1) return `${Math.round(km * 1000)} m`;
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if (km < 10) return `${km.toFixed(1)} km`;
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return `${Math.round(km)} km`;
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}
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function getPharmacyLat(p: PharmacyMedicine): number | null {
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return p.latitude ?? p.pharmacy?.latitude ?? null;
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}
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function getPharmacyLon(p: PharmacyMedicine): number | null {
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return p.longitude ?? p.pharmacy?.longitude ?? null;
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}
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export default function MedicineDetailScreen() {
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const { id } = useLocalSearchParams<{ id: string }>();
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const router = useRouter();
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const { colors } = useThemeContext();
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const [medicine, setMedicine] = useState<Medicine | null>(null);
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const [pharmacies, setPharmacies] = useState<PharmacyMedicine[]>([]);
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const [isLoading, setIsLoading] = useState(true);
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const [sortByDistance, setSortByDistance] = useState(false);
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const [userPosition, setUserPosition] = useState<{ lat: number; lon: number } | null>(null);
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const [locating, setLocating] = useState(false);
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const [locationError, setLocationError] = useState<string | null>(null);
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useEffect(() => {
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if (!id) return;
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const fetchMedicine = async () => {
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try {
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const [medData, pharmData] = await Promise.all([
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getMedicine(id),
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getMedicinePharmacies(id),
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]);
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setMedicine(medData);
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setPharmacies(pharmData);
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} catch (error) {
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console.error('Error fetching medicine:', error);
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} finally {
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setIsLoading(false);
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}
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};
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fetchMedicine();
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}, [id]);
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const handleSortByDistance = async () => {
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if (sortByDistance) {
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setSortByDistance(false);
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return;
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}
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setLocating(true);
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setLocationError(null);
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try {
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const { status } = await Location.requestForegroundPermissionsAsync();
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if (status !== 'granted') {
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setLocationError('Permiso de ubicación denegado');
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setLocating(false);
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return;
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}
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const pos = await Location.getCurrentPositionAsync({ accuracy: Location.Accuracy.Balanced });
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setUserPosition({ lat: pos.coords.latitude, lon: pos.coords.longitude });
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setSortByDistance(true);
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} catch {
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setLocationError('No se pudo obtener tu ubicación');
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} finally {
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setLocating(false);
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}
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};
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const sortedPharmacies = useMemo(() => {
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if (!sortByDistance || !userPosition) return pharmacies;
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return [...pharmacies]
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.map((p) => {
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const lat = getPharmacyLat(p);
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const lon = getPharmacyLon(p);
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const distance =
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lat != null && lon != null
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? haversineKm(userPosition.lat, userPosition.lon, lat, lon)
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: Infinity;
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return { ...p, _distance: distance };
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})
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.sort((a, b) => a._distance - b._distance);
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}, [pharmacies, sortByDistance, userPosition]);
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const locatedPharmacies = useMemo(
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() =>
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sortedPharmacies.filter(
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(p) => getPharmacyLat(p) != null && getPharmacyLon(p) != null
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),
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[sortedPharmacies]
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);
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const mapCenter = useMemo(() => {
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if (locatedPharmacies.length === 0) return { latitude: 40.4168, longitude: -3.7038 };
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const lat = locatedPharmacies.reduce((s, p) => s + (getPharmacyLat(p) || 0), 0) / locatedPharmacies.length;
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const lon = locatedPharmacies.reduce((s, p) => s + (getPharmacyLon(p) || 0), 0) / locatedPharmacies.length;
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return { latitude: lat, longitude: lon };
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}, [locatedPharmacies]);
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const handleDirections = (latitude: number, longitude: number) => {
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const url = `https://www.google.com/maps/dir/?api=1&destination=${latitude},${longitude}`;
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Linking.openURL(url);
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};
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if (isLoading) {
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return <LoadingSpinner message="Cargando medicamento..." />;
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}
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if (!medicine) {
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return (
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<View style={[styles.errorContainer, { backgroundColor: colors.background }]}>
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<Text style={[styles.errorText, { color: colors.textSecondary }]}>Medicamento no encontrado</Text>
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</View>
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);
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}
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return (
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<ScrollView style={[styles.container, { backgroundColor: colors.background }]}>
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<View style={[styles.header, { backgroundColor: colors.card }]}>
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<Text style={[styles.name, { color: colors.text }]}>{medicine.name}</Text>
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{medicine.stock != null && <StockBadge stock={medicine.stock} />}
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</View>
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<View style={[styles.infoSection, { backgroundColor: colors.card }]}>
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<InfoRow label="Principio activo" value={medicine.active_ingredient} colors={colors} />
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<InfoRow label="Laboratorio" value={medicine.laboratory} colors={colors} />
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<InfoRow label="Forma farmacéutica" value={medicine.form} colors={colors} />
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<InfoRow label="Dosificación" value={medicine.dosage} colors={colors} />
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<InfoRow
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label="Precio"
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value={medicine.precio != null ? `${medicine.precio.toFixed(2)} €` : 'No disponible'}
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colors={colors}
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/>
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<InfoRow label="Registro" value={medicine.nregistro} colors={colors} />
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</View>
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{locatedPharmacies.length > 0 && (
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<View style={[styles.mapContainer, { backgroundColor: colors.surfaceVariant }]}>
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<Ionicons name="map-outline" size={48} color={colors.textSecondary} />
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<Text style={[styles.mapPlaceholder, { color: colors.textSecondary }]}>
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Mapa próximamente…
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</Text>
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</View>
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)}
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<View style={styles.pharmaciesSection}>
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<View style={styles.pharmaciesHeader}>
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<Text style={[styles.sectionTitle, { color: colors.text }]}>
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Farmacias ({sortedPharmacies.length})
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</Text>
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<TouchableOpacity
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style={[styles.sortButton, sortByDistance && styles.sortButtonActive, { backgroundColor: sortByDistance ? colors.primary : colors.primaryContainer, borderColor: colors.primary }]}
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onPress={handleSortByDistance}
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disabled={locating}
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>
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<Ionicons name="location" size={16} color={sortByDistance ? '#fff' : colors.primary} />
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<Text style={[styles.sortButtonText, sortByDistance && styles.sortButtonTextActive, { color: sortByDistance ? '#fff' : colors.primary }]}>
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{locating
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? 'Localizando…'
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: sortByDistance
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? 'Distancia · Reset'
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: 'Ordenar por distancia'}
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</Text>
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</TouchableOpacity>
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</View>
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{locationError && (
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<View style={[styles.locationErrorContainer, { backgroundColor: colors.dangerContainer }]}>
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<Text style={[styles.locationErrorText, { color: colors.danger }]}>{locationError}</Text>
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<TouchableOpacity onPress={handleSortByDistance}>
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<Text style={[styles.retryText, { color: colors.primary }]}>Reintentar</Text>
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</TouchableOpacity>
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</View>
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)}
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{sortedPharmacies.length === 0 ? (
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<Text style={[styles.noPharmacies, { color: colors.textSecondary }]}>No hay farmacias disponibles</Text>
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) : (
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sortedPharmacies.map((pharm) => {
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const lat = getPharmacyLat(pharm);
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const lon = getPharmacyLon(pharm);
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const distanceKm =
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sortByDistance && userPosition && lat != null && lon != null
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? haversineKm(userPosition.lat, userPosition.lon, lat, lon)
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: null;
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return (
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<View key={pharm.id} style={[styles.pharmacyCard, { backgroundColor: colors.card }]}>
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<TouchableOpacity
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style={styles.pharmacyCardContent}
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onPress={() => router.push(`/pharmacy/${pharm.pharmacy_id || pharm.id}`)}
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>
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<View style={styles.pharmacyInfo}>
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<View style={styles.pharmacyNameRow}>
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<Text style={[styles.pharmacyName, { color: colors.text }]}>{pharm.pharmacy?.name || pharm.name}</Text>
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{distanceKm != null && (
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<Text style={[styles.pharmacyDistance, { color: colors.primary, backgroundColor: colors.primaryContainer }]}>{formatDistance(distanceKm)}</Text>
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)}
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</View>
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<Text style={[styles.pharmacyAddress, { color: colors.textSecondary }]}>{pharm.pharmacy?.address || pharm.address}</Text>
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</View>
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<View style={styles.pharmacyStock}>
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{pharm.price != null ? (
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<Text style={[styles.price, { color: colors.primary }]}>{pharm.price.toFixed(2)} €</Text>
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) : (
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<Text style={[styles.price, { color: colors.primary }]}>Consultar precio</Text>
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)}
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{pharm.stock > 0 && (
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<Text style={[styles.stock, { color: colors.textSecondary }]}>Stock: {pharm.stock}</Text>
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)}
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</View>
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</TouchableOpacity>
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{lat != null && lon != null && (
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<TouchableOpacity
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style={[styles.directionsButton, { borderTopColor: colors.border }]}
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onPress={() => handleDirections(lat, lon)}
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>
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<Ionicons name="navigate" size={16} color={colors.primary} />
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<Text style={[styles.directionsText, { color: colors.primary }]}>Cómo llegar</Text>
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</TouchableOpacity>
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)}
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</View>
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);
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})
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)}
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</View>
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</ScrollView>
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);
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}
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function InfoRow({ label, value, colors }: { label: string; value: string; colors: any }) {
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return (
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<View style={[styles.infoRow, { borderBottomColor: colors.border }]}>
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<Text style={[styles.infoLabel, { color: colors.textSecondary }]}>{label}</Text>
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<Text style={[styles.infoValue, { color: colors.text }]}>{value}</Text>
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</View>
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);
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}
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const styles = StyleSheet.create({
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container: {
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flex: 1,
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},
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header: {
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flexDirection: 'row',
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justifyContent: 'space-between',
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alignItems: 'flex-start',
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padding: spacing.lg,
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},
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name: {
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flex: 1,
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fontSize: 22,
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fontWeight: 'bold',
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marginRight: spacing.sm,
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},
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infoSection: {
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marginTop: spacing.sm,
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padding: spacing.lg,
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},
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infoRow: {
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flexDirection: 'row',
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justifyContent: 'space-between',
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paddingVertical: spacing.sm,
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borderBottomWidth: 1,
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},
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infoLabel: {
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fontSize: 13,
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flexShrink: 0,
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marginRight: spacing.sm,
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},
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infoValue: {
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fontSize: 13,
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fontWeight: '500',
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flex: 1,
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textAlign: 'right',
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},
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mapContainer: {
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marginTop: spacing.sm,
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marginHorizontal: spacing.lg,
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height: 200,
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borderRadius: borderRadius.lg,
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overflow: 'hidden',
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alignItems: 'center',
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justifyContent: 'center',
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gap: spacing.sm,
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},
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mapPlaceholder: {
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fontSize: 14,
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fontWeight: '500',
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},
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pharmaciesSection: {
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marginTop: spacing.sm,
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padding: spacing.lg,
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},
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pharmaciesHeader: {
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flexDirection: 'row',
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justifyContent: 'space-between',
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alignItems: 'center',
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marginBottom: spacing.md,
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},
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sectionTitle: {
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fontSize: 18,
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fontWeight: '600',
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},
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sortButton: {
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flexDirection: 'row',
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alignItems: 'center',
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gap: spacing.xs,
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paddingHorizontal: spacing.sm + 4,
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paddingVertical: spacing.xs + 2,
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borderRadius: borderRadius.full,
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borderWidth: 1,
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},
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sortButtonActive: {},
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sortButtonText: {
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fontSize: 13,
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fontWeight: '600',
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},
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sortButtonTextActive: {},
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locationErrorContainer: {
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flexDirection: 'row',
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alignItems: 'center',
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gap: spacing.sm,
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padding: spacing.sm,
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marginBottom: spacing.sm,
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borderRadius: borderRadius.md,
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},
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locationErrorText: {
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flex: 1,
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fontSize: 13,
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},
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retryText: {
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fontSize: 13,
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fontWeight: '600',
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},
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noPharmacies: {
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textAlign: 'center',
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padding: spacing.xl,
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},
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pharmacyCard: {
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borderRadius: borderRadius.lg,
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marginBottom: spacing.sm,
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overflow: 'hidden',
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shadowColor: '#000',
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shadowOffset: { width: 0, height: 2 },
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shadowOpacity: 0.06,
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shadowRadius: 8,
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elevation: 2,
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},
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pharmacyCardContent: {
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flexDirection: 'row',
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justifyContent: 'space-between',
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padding: spacing.md,
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},
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pharmacyInfo: {
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flex: 1,
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},
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pharmacyNameRow: {
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flexDirection: 'row',
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justifyContent: 'space-between',
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alignItems: 'center',
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},
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pharmacyName: {
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flex: 1,
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fontSize: 16,
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fontWeight: '600',
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marginRight: spacing.sm,
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},
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pharmacyDistance: {
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fontSize: 12,
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fontWeight: '600',
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paddingHorizontal: spacing.sm,
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paddingVertical: 2,
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borderRadius: borderRadius.full,
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overflow: 'hidden',
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},
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pharmacyAddress: {
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fontSize: 14,
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marginTop: spacing.xs,
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},
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pharmacyStock: {
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alignItems: 'flex-end',
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},
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price: {
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fontSize: 16,
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fontWeight: '600',
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},
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stock: {
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fontSize: 12,
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marginTop: spacing.xs,
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},
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directionsButton: {
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flexDirection: 'row',
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alignItems: 'center',
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justifyContent: 'center',
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gap: spacing.xs,
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paddingVertical: spacing.sm,
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borderTopWidth: 1,
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},
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directionsText: {
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fontSize: 14,
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fontWeight: '600',
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},
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errorContainer: {
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flex: 1,
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justifyContent: 'center',
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alignItems: 'center',
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},
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errorText: {
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fontSize: 16,
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},
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});
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