1 files changed, 197 insertions, 0 deletions
diff --git a/src/scripts/pages/sheet-map/index.ts b/src/scripts/pages/sheet-map/index.ts
new file mode 100644
index 0000000..c16a2ae
--- /dev/null
+++ b/src/scripts/pages/sheet-map/index.ts
@@ -0,0 +1,197 @@
+import getDownloadMapPDFPageContent from "@/scripts/pages/sheet-map/download-map-pdf-page-content.html";
+import getMapPlotNumberLabelTextElement from "@/scripts/pages/sheet-map/map-plot-number-label-text-element.html";
+import getMapPlotPolygonPathElement from "@/scripts/pages/sheet-map/map-plot-polygon-path-element.html";
+import getPlotInformationElement from "@/scripts/pages/sheet-map/plot-information-element.html";
+import { generateWebPage } from "@/shared/generate-web-page";
+
+type PlotPolygon = {
+	plotArea: number;
+	plotno: string;
+	polygon: string
+};
+
+type PlotNumberLabel = {
+	plotno: string;
+	point: string
+};
+
+const headerElement = document.querySelector<HTMLTableRowElement>("#headerTable > tbody > tr");
+const plotNumberInput = document.querySelector<HTMLInputElement>("#txtPlotNo");
+const plotInformation = document.createElement("div");
+let plotPolygonPathElements = "";
+let plotNumberLabelTextElements = "";
+
+document.body.appendChild(plotInformation);
+
+/**
+ * Creates a header toolbar button and appends it to the page header.
+ * The button starts hidden and is shown when data is ready.
+ *
+ * @param text - The button label text.
+ * @returns The created button element.
+ */
+function createHeaderButton(text: string): HTMLButtonElement {
+	const buttonContainer = document.createElement("td");
+	const button = document.createElement("button");
+	button.innerHTML = text;
+	button.style.display = "none";
+	buttonContainer.appendChild(button);
+	if (headerElement)
+		headerElement.appendChild(buttonContainer);
+	return button;
+};
+
+/**
+ * Displays the area and plot number for the given polygon in a floating
+ * info panel, or shows "0.000" / empty if no polygon is selected.
+ *
+ * @param plotPolygon - The selected plot's data, or `null`/`undefined` to clear.
+ */
+function setPlotInformation(plotPolygon: PlotPolygon | null | undefined = null): void {
+	plotInformation.innerHTML = plotPolygon
+		? getPlotInformationElement({
+			area: (plotPolygon.plotArea / 1000).toFixed(3),
+			plotNumber: plotPolygon.plotno
+		})
+		: getPlotInformationElement({
+			area: "0.000",
+			plotNumber: ""
+		});
+};
+
+/**
+ * Opens a new window with a printable PDF view of the map, optionally
+ * including plot-number labels.
+ *
+ * @param labelPoints - Whether to include plot number text labels.
+ */
+function downloadPDF(labelPoints = true): void {
+	/** Extracts a detail value (district/block/mouza) from the header table by column index. */
+	function _getMapDetail(i: number): string {
+		const detail = (document.querySelector<HTMLTableCellElement>(`#headerTable > tbody > tr > td:nth-child(${i.toString()})`)?.innerHTML ?? "")
+			.split("[")[1]
+			.trim();
+		return detail.substring(0, detail.length - 1);
+	};
+	generateWebPage(
+		getDownloadMapPDFPageContent({
+			district: _getMapDetail(1),
+			block: _getMapDetail(2),
+			mouza: _getMapDetail(3),
+			mapContent: plotPolygonPathElements + (labelPoints ? plotNumberLabelTextElements : "")
+		}),
+		"map"
+	);
+};
+
+const downloadPDFButton = createHeaderButton("SAVE PDF");
+const downloadPDFNoLabelButton = createHeaderButton("SAVE PDF (NO LABEL)");
+
+downloadPDFButton.addEventListener("click", (e) => {
+	e.preventDefault();
+	downloadPDF();
+});
+
+downloadPDFNoLabelButton.addEventListener("click", (e) => {
+	e.preventDefault();
+	downloadPDF(false);
+});
+
+setPlotInformation();
+
+void (async function(): Promise<void> {
+	const searchParams = new URLSearchParams(window.location.search);
+	const sheetMapLayerDataResponse = await fetch(
+		`/BanglarBhumi/sheetMap_populateLayerData?lstSheetNo=${searchParams.get("lstSheetNo")?.toString() ?? ""}`,
+		{
+			method: "POST"
+		});
+	type SheetMapLayerDataResponseType = {
+		features: PlotPolygon[]
+	};
+	const sheetMapLayerDataResponseJson
+		=	await sheetMapLayerDataResponse.json() as SheetMapLayerDataResponseType;
+	const plotPolygonList: PlotPolygon[] = sheetMapLayerDataResponseJson.features;
+	const sheetMapCentroidDataResponse = await fetch(
+		`/BanglarBhumi/sheetMap_populateCentroidData?lstSheetNo=${searchParams.get("lstSheetNo")?.toString() ?? ""}`,
+		{
+			method: "POST"
+		});
+	type SheetMapCentroidDataResponseType = {
+		features: PlotNumberLabel[]
+	};
+	const sheetMapCentroidDataResponseJson
+		= await sheetMapCentroidDataResponse.json() as SheetMapCentroidDataResponseType;
+	const plotNumberLabelList: PlotNumberLabel[] = sheetMapCentroidDataResponseJson.features;
+	const plotPolygons: Record<string, PlotPolygon> = {};
+
+	for (const plotPolygon of plotPolygonList) {
+		const plotPolygonPoints = plotPolygon.polygon.split("(((")[1].split(")))")[0];
+		plotPolygonPathElements += getMapPlotPolygonPathElement({
+			polygonVertices: plotPolygonPoints
+		});
+	}
+
+	for (const plotNumberLabel of plotNumberLabelList) {
+		const plotNumberLabelPoint = plotNumberLabel.point.split("(")[1].split(")")[0].split(" ");
+		plotNumberLabelTextElements += getMapPlotNumberLabelTextElement({
+			x: plotNumberLabelPoint[0],
+			y: plotNumberLabelPoint[1],
+			plotNumber: plotNumberLabel.plotno
+		});
+	}
+
+	downloadPDFButton.style.display = "inherit";
+	downloadPDFNoLabelButton.style.display = "inherit";
+
+	document.querySelector<HTMLButtonElement>("#btnSearch")?.addEventListener("click", () => {
+		let plotPolygon;
+		for (const p of plotPolygonList) {
+			if (p.plotno === plotNumberInput?.value) {
+				plotPolygon = p;
+				break;
+			}
+		}
+		setPlotInformation(plotPolygon);
+	});
+
+	await new Promise<void>((resolve, _reject) => {
+		const plotElementIdsControl = setInterval(() => {
+			const plotElements = document.querySelector("#OpenLayers_Layer_Vector_25_vroot")?.children ?? [];
+			if (plotElements.length) {
+				clearInterval(plotElementIdsControl);
+				for (let i = 0; i < plotElements.length; i++) {
+					plotPolygons[plotElements[i].id] = plotPolygonList[i];
+				}
+				resolve();
+			}
+		}, 50);
+	});
+
+	setInterval(() => {
+		for (const plotElementId in plotPolygons) {
+			const e = document.getElementById(plotElementId);
+			if (e) {
+				e.removeEventListener("click", handlePlotClick);
+				e.addEventListener("click", handlePlotClick);
+			}
+		}
+	}, 300);
+
+	/**
+	 * Highlights the clicked plot on the SVG map and shows its
+	 * information in the info panel.
+	 *
+	 * @param e - The mouse click event.
+	 */
+	function handlePlotClick(e: MouseEvent): void {
+		document.querySelectorAll("path").forEach((e) => {
+			e.setAttribute("fill", "#ffcc66");
+		});
+
+		const target = e.target as SVGPathElement;
+
+		target.setAttribute("fill", "#8aeeef");
+		setPlotInformation(plotPolygons[target.id]);
+	};
+})();