<template>
	<div class="map-container">
		<div ref="mapElement" class="map" :style="{ height: mapHeight }"></div>
		<div v-if="!latitude || !longitude" class="map-overlay">
			<div class="no-coordinates">
				<i
					class="pi pi-map-marker"
					style="font-size: 2rem; color: #64748b; margin-bottom: 0.5rem"
				></i>
				<p>No coordinates available</p>
			</div>
		</div>
	</div>
</template>

<script setup>
import { ref, onMounted, onUnmounted, watch, nextTick } from "vue";
import L from "leaflet";
import "leaflet/dist/leaflet.css";

// Fix Leaflet default marker icons
delete L.Icon.Default.prototype._getIconUrl;
L.Icon.Default.mergeOptions({
	iconRetinaUrl:
		"https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.7.1/images/marker-icon-2x.png",
	iconUrl: "https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.7.1/images/marker-icon.png",
	shadowUrl: "https://cdnjs.cloudflare.com/ajax/libs/leaflet/1.7.1/images/marker-shadow.png",
});

const props = defineProps({
	latitude: {
		type: [Number, String],
		required: false,
		default: null,
	},
	longitude: {
		type: [Number, String],
		required: false,
		default: null,
	},
	addressTitle: {
		type: String,
		default: "Location",
	},
	mapHeight: {
		type: String,
		default: "400px",
	},
	zoomLevel: {
		type: Number,
		default: 15,
	},
	interactive: {
		type: Boolean,
		default: true,
	},
});

const mapElement = ref(null);
let map = null;
let marker = null;
let resizeObserver = null;

const initializeMap = async () => {
	if (!mapElement.value) return;

	// Clean up existing map
	if (map) {
		map.remove();
		map = null;
		marker = null;
	}

	const lat = parseFloat(props.latitude);
	const lng = parseFloat(props.longitude);

	// Only create map if we have valid coordinates
	if (!isNaN(lat) && !isNaN(lng)) {
		// Wait for next tick to ensure DOM is updated
		await nextTick();

		// Additional delay to ensure container has proper dimensions
		await new Promise(resolve => setTimeout(resolve, 50));

		// Initialize map
		map = L.map(mapElement.value, {
			zoomControl: props.interactive,
			dragging: props.interactive,
			touchZoom: props.interactive,
			scrollWheelZoom: props.interactive,
			doubleClickZoom: props.interactive,
			boxZoom: props.interactive,
			keyboard: props.interactive,
		}).setView([lat, lng], props.zoomLevel);

		// Add tile layer
		L.tileLayer("https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", {
			maxZoom: 19,
			attribution: "© OpenStreetMap contributors",
		}).addTo(map);

		// Add marker
		marker = L.marker([lat, lng])
			.addTo(map)
			.bindPopup(
				`
				<div style="text-align: center;">
					<strong>${props.addressTitle}</strong><br>
					<small>Lat: ${lat.toFixed(6)}, Lng: ${lng.toFixed(6)}</small>
				</div>
			`,
			)
			.openPopup();

		// Ensure map renders correctly - call invalidateSize multiple times
		const invalidateMap = () => {
			if (map) {
				map.invalidateSize();
			}
		};

		setTimeout(invalidateMap, 100);
		setTimeout(invalidateMap, 300);
		setTimeout(invalidateMap, 500);

		// Set up resize observer to handle container size changes
		if (resizeObserver) {
			resizeObserver.disconnect();
		}
		resizeObserver = new ResizeObserver(() => {
			if (map) {
				map.invalidateSize();
			}
		});
		resizeObserver.observe(mapElement.value);
	}
};

const updateMap = () => {
	const lat = parseFloat(props.latitude);
	const lng = parseFloat(props.longitude);

	if (map && !isNaN(lat) && !isNaN(lng)) {
		// Update map view
		map.setView([lat, lng], props.zoomLevel);

		// Ensure map renders correctly after view change
		const invalidateMap = () => {
			if (map) {
				map.invalidateSize();
			}
		};

		setTimeout(invalidateMap, 100);
		setTimeout(invalidateMap, 300);

		// Update marker
		if (marker) {
			marker.setLatLng([lat, lng]);
			marker.setPopupContent(`
				<div style="text-align: center;">
					<strong>${props.addressTitle}</strong><br>
					<small>Lat: ${lat.toFixed(6)}, Lng: ${lng.toFixed(6)}</small>
				</div>
			`);
		} else {
			marker = L.marker([lat, lng])
				.addTo(map)
				.bindPopup(
					`
					<div style="text-align: center;">
						<strong>${props.addressTitle}</strong><br>
						<small>Lat: ${lat.toFixed(6)}, Lng: ${lng.toFixed(6)}</small>
					</div>
				`,
				)
				.openPopup();
		}
	} else if (!isNaN(lat) && !isNaN(lng)) {
		// Coordinates available but no map yet - initialize
		initializeMap();
	}
};

// Watch for coordinate changes
watch(
	() => [props.latitude, props.longitude, props.addressTitle],
	() => {
		updateMap();
	},
	{ immediate: false },
);

onMounted(() => {
	initializeMap();
});

onUnmounted(() => {
	if (map) {
		map.remove();
		map = null;
		marker = null;
	}
	if (resizeObserver) {
		resizeObserver.disconnect();
		resizeObserver = null;
	}
});
</script>

<style scoped>
.map-container {
	position: relative;
	border-radius: 8px;
	overflow: hidden;
	border: 1px solid var(--surface-border);
	box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.map {
	width: 100%;
	position: relative;
	z-index: 1;
}

.map-overlay {
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: var(--surface-ground);
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 2;
}

.no-coordinates {
	text-align: center;
	color: var(--text-color-secondary);
	padding: 2rem;
}

.no-coordinates p {
	margin: 0;
	font-size: 0.9rem;
}

/* Leaflet popup customization */
:deep(.leaflet-popup-content-wrapper) {
	border-radius: 6px;
	box-shadow: 0 3px 14px rgba(0, 0, 0, 0.4);
}

:deep(.leaflet-popup-tip) {
	background: white;
	border: none;
	box-shadow: 0 3px 14px rgba(0, 0, 0, 0.4);
}
</style>
