From d26988f5bbd147ef230676446e687eb527a7d7ad Mon Sep 17 00:00:00 2001
From: Arpit Chakladar <54011232+arpitchakladar@users.noreply.github.com>
Date: Thu, 6 Apr 2023 08:56:56 +0530
Subject: Added "Download PDF" button to khatian information.

---
 src/scripts/functionality/view-khatian.ts | 31 +++++++++++++++++++++++++++++++
 src/shared/download-pdf.ts                | 22 ++++++++++++++++++++++
 src/types/html2pdf.js.d.ts                |  1 +
 3 files changed, 54 insertions(+)
 create mode 100644 src/shared/download-pdf.ts
 create mode 100644 src/types/html2pdf.js.d.ts

(limited to 'src')

diff --git a/src/scripts/functionality/view-khatian.ts b/src/scripts/functionality/view-khatian.ts
index e1d3831..e81613b 100644
--- a/src/scripts/functionality/view-khatian.ts
+++ b/src/scripts/functionality/view-khatian.ts
@@ -1,8 +1,26 @@
+import { downloadPDF } from "@/shared/download-pdf";
+
 declare function loadKhatian(): void;
 
 document.addEventListener("DOMContentLoaded", () => {
 	const proxiedPost = $.post;
 
+	const submitButtonElement = document.querySelector("#khbutton") as HTMLButtonElement;
+	const separatorElement = document.querySelector("#bodycover > div > form > hr:nth-child(2)") as HTMLElement;
+	const formElement = document.querySelector("#bodycover > div > form") as HTMLElement;
+	let downloadPDFButton: HTMLButtonElement | null = null;
+
+	const submitButtonElementComputedStyles = window.getComputedStyle(submitButtonElement);
+	const styles = Array.from(submitButtonElementComputedStyles)
+		.reduce(
+			(str, property) => `${str}${property}:${submitButtonElementComputedStyles.getPropertyValue(property)};`,
+			""
+		);
+
+	const downloadKhatianInformationPDF = () => {
+		downloadPDF(document.querySelector("html") as HTMLElement, "khatian-details.pdf");
+	};
+
 	$.post = function() {
 		if (arguments[0].startsWith("khDetailsAction_LandInfo.action")) {
 			const callback = arguments[2];
@@ -13,6 +31,19 @@ document.addEventListener("DOMContentLoaded", () => {
 				if (tableElement) {
 					tableElement.style.height = "auto";
 					tableElement.style.width = "100%";
+
+					if (!downloadPDFButton) {
+						downloadPDFButton = document.createElement("button");
+						downloadPDFButton.innerHTML = "Download PDF";
+						downloadPDFButton.style.cssText = styles;
+						downloadPDFButton.style.width = "auto";
+						downloadPDFButton.addEventListener("click", downloadKhatianInformationPDF);
+						formElement.insertBefore(downloadPDFButton, separatorElement);
+					}
+				} else if (downloadPDFButton) {
+					downloadPDFButton.removeEventListener("click", downloadKhatianInformationPDF);
+					formElement.removeChild(downloadPDFButton);
+					downloadPDFButton = null;
 				}
 			}
 		}
diff --git a/src/shared/download-pdf.ts b/src/shared/download-pdf.ts
new file mode 100644
index 0000000..a034e44
--- /dev/null
+++ b/src/shared/download-pdf.ts
@@ -0,0 +1,22 @@
+import html2pdf from "html2pdf.js";
+
+export const downloadPDF = (element: HTMLElement, filename: string = "banglarbhumi.pdf") => {
+	html2pdf().set({
+		margin: 0,
+		filename: filename,
+		image: {
+			type: "jpeg",
+			quality: 0.98
+		},
+		html2canvas: {
+			scale: 1
+		},
+		jsPDF: {
+			unit: "in",
+			format: "letter",
+			orientation: "portrait"
+		}
+	})
+		.from(element)
+		.save();
+};
diff --git a/src/types/html2pdf.js.d.ts b/src/types/html2pdf.js.d.ts
new file mode 100644
index 0000000..c9a972e
--- /dev/null
+++ b/src/types/html2pdf.js.d.ts
@@ -0,0 +1 @@
+declare module "html2pdf.js";
-- 
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