refactor: organised the scripts into a more well defined structure

now all scripts that are common to all pages lie in src/scripts/common
each page gets its own folder in src/pages and different parts of the
page's configuration are separated in separated folders which are all
finally imported in src/pages/*/index.ts

2 files changed, 336 insertions, 0 deletions

diff --git a/src/scripts/pages/view-khatian/download-information-pdf-page-content.html b/src/scripts/pages/view-khatian/download-information-pdf-page-content.html
new file mode 100644
index 0000000..129608e
--- /dev/null
+++ b/src/scripts/pages/view-khatian/download-information-pdf-page-content.html
@@ -0,0 +1,241 @@
+<div id="content">
+	<style type="text/css" media="print">
+		@page {
+			size: A4;
+			margin: 0;
+		}
+	</style>
+	<style>
+		* {
+			box-sizing: border-box !important;
+			text-decoration: none;
+			margin: 0;
+			padding: 0;
+			font-size: 16px !important;
+		}
+
+		#content {
+			width: 100%;
+			margin: 0;
+			padding: 0;
+		}
+
+		.banner {
+			width: 100%;
+		}
+
+		.details {
+			padding: 1rem;
+		}
+
+		#locater-information {
+			width: 100%;
+			margin-bottom: 1rem;
+		}
+
+		#locater-information,
+		.details#plot-information > div:nth-child(1) > div:nth-child(5) > table {
+			border-collapse: collapse;
+		}
+
+		.details#khatian-information > table,
+		.details#plot-information > div:nth-child(1) {
+			width: 100% !important;
+			border-spacing: 0;
+		}
+
+		.details#plot-information > div:nth-child(1) > div:nth-child(1) {
+			text-align: center !important;
+		}
+
+		.details#plot-information > div:nth-child(1) > div:nth-child(1) {
+			margin: 0 !important;
+		}
+
+		.details#plot-information > div > div > table tr,
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div > table > tbody > tr,
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(5) > table > tbody > tr:last-child,
+		#locater-information > tbody > tr {
+			border-bottom: 1px solid black;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div > table > tbody > tr > th:nth-child(1),
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div > table > tbody > tr > td:nth-child(1),
+		.details#khatian-information #headertitle > tr > th:nth-child(1),
+		#locater-information > tbody > tr > td:nth-child(1),
+		.details#plot-information > div:nth-child(1) > div:nth-child(3) > table > tbody > tr > td:nth-child(1),
+		#headertitle > tr > th:nth-child(1),
+		#plot-information > div:nth-child(1) > div:nth-child(5) > table > tbody > tr > td:nth-child(1) {
+			border-left: 1px solid black !important;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(2) > table > tbody > tr:nth-child(1),
+		#headertitle > tr,
+		.details#plot-information > div:nth-child(1) > div:nth-child(3) > table > tbody > tr.table-text.knwurprpty_tbl_head_txt.ng-scope,
+		#headertitle,
+		#locater-information tr:nth-child(1) {
+			border-top: 1px solid black !important;
+			border-color: black !important;
+		}
+
+		.details td {
+			white-space: normal;
+		}
+
+		.details#plot-information #headertitle > tr > th,
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div > table > tbody > tr > th,
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div > table > tbody > tr > td,
+		.details#khatian-information #headertitle > tr > th,
+		#locater-information > tbody > tr > td,
+		.details#plot-information > div:nth-child(1) > div:nth-child(3) > table > tbody > tr > td,
+		.details#plot-information > div:nth-child(1) > div:nth-child(5) > table > tbody > tr > td,
+		.details#plot-information > div:nth-child(1) > div:nth-child(5) > table > tbody {
+			border-right: 1px solid black !important;
+		}
+
+		.details#plot-information > div:nth-child(1) > div:nth-child(3) > table {
+			border: none !important;
+		}
+
+		.details#plot-information > div:nth-child(1) > div {
+			position: initial !important;
+			left: 0 !important;
+			width: 100% !important;
+			border-left: none !important;
+			border-right: none !important;
+		}
+
+		.details#plot-information > div:nth-child(2),
+		.details#plot-information > div:nth-child(1) > div:nth-child(3) > table > tbody > tr > td:nth-child(4),
+		.details#plot-information > div:nth-child(1) > div:nth-child(3) > table > tbody > tr > th:nth-child(4),
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > p:nth-child(3),
+		.details#khatian-information > table > tbody > tr > td:nth-child(2) {
+			display: none !important;
+		}
+
+		.details#plot-information > div:nth-child(1) > div:nth-child(5) > table > tbody > tr {
+			background-color: transparent !important;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1),
+		.details#plot-information > div:nth-child(1) > div:nth-child(3) > table {
+			width: 100% !important;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(1),
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > p:nth-child(4) {
+			text-align: center;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(2) {
+			width: 100% !important;
+			position: initial !important;
+			left: 0 !important;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(2) > table,
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(5) > table {
+			width: 100% !important;
+			border: none !important;
+		}
+
+		.details table tbody tr tr,
+		.details table tbody tr th,
+		.details table tbody tr td {
+			background-color: transparent;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(2) td,
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(2) th {
+			text-align: left;
+		}
+
+		.details#khatian-information > table > tbody > tr > td > div > table > tbody > tr > th,
+		.details#khatian-information > table > tbody > tr > td > div > table > tbody > tr > td,
+		.details#plot-information td {
+			padding: 0 0.2rem 0 0.2rem;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(2) > table > tbody > tr:nth-child(1) > th {
+			font-weight: 500;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(2) > table > tbody > tr > th:nth-child(1),
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(2) > table > tbody > tr > td:nth-child(1),
+		#locater-information > tbody > tr > td:nth-child(1) {
+			font-weight: bold;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > p:nth-child(4) {
+			margin-top: 1rem !important;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(5),
+		.details#plot-information > div:nth-child(1) > div:nth-child(5) {
+			position: initial !important;
+			left: 0 !important;
+			top: 0 !important;
+			margin: 0 !important;
+			width: 100% !important;
+		}
+
+		.details#plot-information > div:nth-child(1),
+		.details#khatian-information > table,
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) {
+			border: none !important;
+		}
+
+		.details#khatian-information > table > tbody > tr > td:nth-child(1) > div:nth-child(2) > table > tbody > tr:nth-child(1) > th,
+		#locater-information > tbody > tr > td {
+			width: 50%;
+		}
+
+		body {
+			width: 210mm !important;
+			height: 297mm !important;
+			margin: 0 !important;
+			padding: 0 !important;
+		}
+	</style>
+	<img class="banner" src="https://banglarbhumi.gov.in/BanglarBhumi/images/bl.png">
+	<div class="details">$details$</div>
+	<script>
+		let tableBodyElement;
+		const createTableEntry = (label, value) => {
+			const tableRowElement = document.createElement("tr");
+			const tableLabelColumnElement = document.createElement("td");
+			tableLabelColumnElement.innerHTML = label;
+			const tableValueColumnElement = document.createElement("td");
+			tableValueColumnElement.innerHTML = value;
+			tableRowElement.appendChild(tableLabelColumnElement);
+			tableRowElement.appendChild(tableValueColumnElement);
+			tableBodyElement.appendChild(tableRowElement);
+		};
+
+		if ($isPlotInformation$) {
+			document.querySelector(".details").setAttribute("id", "plot-information");
+			const tableElement = document.createElement("table");
+			tableElement.setAttribute("id", "locater-information");
+			tableBodyElement = document.createElement("tbody");
+			tableElement.appendChild(tableBodyElement);
+			const detailsElement = document.querySelector(".details > div:nth-child(1)");
+			detailsElement.insertBefore(tableElement, detailsElement.querySelector("div:nth-child(2)"));
+		} else {
+			document.querySelector(".details").setAttribute("id", "khatian-information");
+			tableBodyElement = document.querySelector(".details > table > tbody > tr > td:nth-child(1) > div:nth-child(2) > table > tbody");
+		}
+
+		createTableEntry("\u{99C}\u{9C7}\u{9B2}\u{9BE} (District):", "$district$");
+		createTableEntry("\u{9AC}\u{9CD}\u{9B2}\u{995} (Block):", "$block$");
+		createTableEntry("\u{9AE}\u{9CC}\u{99C}\u{9BE} (Mouza):", "$mouza$");
+		Promise.all(
+			Array.from(document.images)
+				.filter(img => !img.complete).map(img => new Promise(resolve => {
+					img.onload = img.onerror = resolve;
+				}))
+			).then(() => {
+				window.addEventListener("afterprint", window.close);
+				window.print();
+			});
+	</script>
+</div>
diff --git a/src/scripts/pages/view-khatian/index.ts b/src/scripts/pages/view-khatian/index.ts
new file mode 100644
index 0000000..0be0c52
--- /dev/null
+++ b/src/scripts/pages/view-khatian/index.ts
@@ -0,0 +1,95 @@
+import { generateWebPage } from "@/shared/generate-web-page";
+import { interceptPost } from "@/shared/intercept-jquery-ajax";
+import getDownloadInformationPDFPageContent from "@/scripts/pages/view-khatian/download-information-pdf-page-content.html";
+
+const submitButtonElement = $("#khbutton");
+const separatorElement = $("#bodycover > div > form > hr:nth-child(2)");
+const formElement = $("#bodycover > div > form");
+let downloadPDFButton: JQuery<HTMLButtonElement> | null = null;
+
+const submitButtonElementComputedStyles = window.getComputedStyle(submitButtonElement[0]);
+const styles = Array.from(submitButtonElementComputedStyles)
+	.reduce(
+		(str, property) => `${str}${property}:${submitButtonElementComputedStyles.getPropertyValue(property)};`,
+		""
+	);
+
+/**
+ * Reads the currently selected text from a `<select>` element.
+ *
+ * @param selector - CSS selector for the select element.
+ * @returns The text of the selected option.
+ */
+const getValueOfSelectElement = (selector: string) => {
+	const element = document.querySelector<HTMLSelectElement>(selector)!;
+	return element.options[element.selectedIndex].text;
+};
+
+let isPlotInformation: boolean | null = null;
+
+/**
+ * Opens a new window with a printable PDF view of the current khatian
+ * or plot details, including district/block/mouza info.
+ */
+const downloadInformationPDF = () => {
+	generateWebPage(
+		getDownloadInformationPDFPageContent({
+			isPlotInformation: !!isPlotInformation,
+			details: $(isPlotInformation ? "#plotdetails" : "#khdetails").html(),
+			district: getValueOfSelectElement("#lstDistrictCode1"),
+			block: getValueOfSelectElement("#lstBlockCode1"),
+			mouza: getValueOfSelectElement("#lstMouzaList")
+		}),
+		isPlotInformation
+			? "Plot Details"
+			: "Khatian Details"
+	);
+};
+
+/**
+ * Intercepts the success callback of a jQuery AJAX call.  When a valid
+ * details table is returned, it inserts a "Download PDF" button;
+ * otherwise it removes an existing button.
+ *
+ * @param args - The `arguments` object from the intercepted `$.post` call.
+ */
+const showDownloadButton = (args: any) => {
+	if (isPlotInformation !== null) {
+		const callback = args[2];
+		args[2] = (data: any) => {
+			callback(data);
+			const tableElement = $(isPlotInformation
+				? "#plotdetails > div:nth-child(1) > div:nth-child(4) > table > tbody"
+				: "#khdetails > table > tbody > tr > td:nth-child(1) > div:nth-child(5) > table > tbody"
+			);
+
+			if (tableElement.length) {
+				tableElement.css("height", "auto");
+				tableElement.css("width", "100%");
+
+				if (!downloadPDFButton) {
+					downloadPDFButton = $(document.createElement("button"));
+					downloadPDFButton.html("Download PDF");
+					downloadPDFButton[0].style.cssText = styles;
+					downloadPDFButton.css("width", "auto");
+					downloadPDFButton.css("margin-bottom", "1rem");
+					downloadPDFButton.on("click", downloadInformationPDF);
+					formElement[0].insertBefore(downloadPDFButton[0], separatorElement[0]);
+				}
+			} else if (downloadPDFButton) {
+				($(downloadPDFButton as any) as any).remove();
+				isPlotInformation = null;
+				downloadPDFButton = null;
+			}
+		}
+	}
+};
+
+interceptPost("plotDetailsAction_LandInfo.action", args => {
+	isPlotInformation = true;
+	showDownloadButton(args);
+});
+interceptPost("khDetailsAction_LandInfo.action", args => {
+	isPlotInformation = false;
+	showDownloadButton(args);
+});