refactor: move extractPageTitleFromURL to module, add tests

__tests__/url.test.ts

@@ -0,0 +1,28 @@
+import { extractPageTitleFromURL } from '../src/content/utils/url';
+
+describe('extractPageTitleFromURL', () => {
+  it('extracts simple title from URL', () => {
+    const url = 'https://wiki.teamfortress.com/wiki/Scattergun';
+    expect(extractPageTitleFromURL(url)).toBe('Scattergun');
+  });
+
+  it('replaces underscores with spaces', () => {
+    const url = 'https://wiki.teamfortress.com/wiki/Flame_Thrower';
+    expect(extractPageTitleFromURL(url)).toBe('Flame Thrower');
+  });
+
+  it('decodes URI components', () => {
+    const url = 'https://wiki.teamfortress.com/wiki/Dragon%27s_Fury';
+    expect(extractPageTitleFromURL(url)).toBe("Dragon's Fury");
+  });
+
+  it('handles special characters', () => {
+    const url = 'https://wiki.teamfortress.com/wiki/Ze_%C3%9Cbermensch';
+    expect(extractPageTitleFromURL(url)).toBe("Ze Übermensch");
+  });
+
+  it('removes language suffix', () => {
+    const url = 'https://wiki.teamfortress.com/wiki/Ze_%C3%9Cbermensch/pt-br';
+    expect(extractPageTitleFromURL(url)).toBe('Ze Übermensch');
+  });
+});

src/content/content.ts

@@ -8,6 +8,7 @@ import { $T, extractLocaleFromURL } from './utils/localization'
 import { fetchPrice, fetchKeyPrice, ItemPriceData } from './priceService'
 import { createPriceRow, createStoreButton } from './uiRenderer'
 import { findFirstElement, findFirstChildElement } from './utils/dom'
+import { extractPageTitleFromURL } from './utils/url';
 var itemSchema: ItemSchema | null;
 
 var pageLocale: string = 'en'
@@ -23,15 +24,6 @@ function getKeyByValue(object: any, value: string) {
 	return Object.keys(object).find(key => object[key] === value);
 }
 
-function extractPageTitleFromURL(url: string): string {
-	var split = url.substring(url.indexOf("/wiki/") + "/wiki/".length);
-	if (split.indexOf('/') != -1) {
-		// Remove language suffix (/es)
-		split = split.substring(0, split.indexOf('/'));
-	}
-	return decodeURIComponent(split.replaceAll('_', ' '));
-}
-
 // Main function
 async function inject() {
 	const itemInfobox = findFirstElement('.item-infobox');

src/content/utils/url.ts

@@ -0,0 +1,8 @@
+export function extractPageTitleFromURL(url: string): string {
+	var split = url.substring(url.indexOf("/wiki/") + "/wiki/".length);
+	if (split.indexOf('/') != -1) {
+		// Remove language suffix (/es)
+		split = split.substring(0, split.indexOf('/'));
+	}
+	return decodeURIComponent(split.replaceAll('_', ' '));
+}