Add configurable skip delay (0-30s) for Skip Intro and Skip Credits

tests/delay.test.js

@@ -0,0 +1,104 @@
+const test = require("node:test");
+const assert = require("node:assert");
+const { loadContentScript, wait } = require("./helpers");
+
+test("zero delay still clicks immediately (default behavior preserved)", async () => {
+  const { window } = loadContentScript({
+    url: "https://app.plex.tv/web/index.html",
+    html: `<!DOCTYPE html><html><body><button>Skip Intro</button></body></html>`,
+    settings: { introDelaySeconds: 0 }
+  });
+
+  await wait(50);
+  assert.strictEqual(window.__clickedElements.length, 1);
+});
+
+test("does not click immediately when a delay is configured, but clicks once it elapses", async () => {
+  const { window } = loadContentScript({
+    url: "https://app.plex.tv/web/index.html",
+    html: `<!DOCTYPE html><html><body><button>Skip Credits</button></body></html>`,
+    settings: { creditsDelaySeconds: 1 }
+  });
+
+  await wait(50);
+  assert.strictEqual(window.__clickedElements.length, 0, "should not click before the delay elapses");
+
+  await wait(1100);
+  assert.strictEqual(window.__clickedElements.length, 1, "should click once the delay elapses");
+});
+
+test("does not schedule duplicate clicks while a delay is already pending", async () => {
+  const { window } = loadContentScript({
+    url: "https://app.plex.tv/web/index.html",
+    html: `<!DOCTYPE html><html><body><button id="skip">Skip Intro</button></body></html>`,
+    settings: { introDelaySeconds: 1 }
+  });
+
+  await wait(50);
+  window.document.body.appendChild(window.document.createElement("div"));
+  await wait(50);
+  window.document.body.appendChild(window.document.createElement("div"));
+
+  await wait(1200);
+  assert.strictEqual(window.__clickedElements.length, 1);
+});
+
+test("cancels a scheduled click if its toggle is turned off mid-delay", async () => {
+  const { window, fireStorageChange } = loadContentScript({
+    url: "https://app.plex.tv/web/index.html",
+    html: `<!DOCTYPE html><html><body><button>Skip Intro</button></body></html>`,
+    settings: { introDelaySeconds: 1 }
+  });
+
+  await wait(50);
+  fireStorageChange({ skipIntro: false });
+
+  await wait(1200);
+  assert.strictEqual(window.__clickedElements.length, 0);
+});
+
+test("does not click if the button is removed from the page before the delay elapses", async () => {
+  const { window } = loadContentScript({
+    url: "https://app.plex.tv/web/index.html",
+    html: `<!DOCTYPE html><html><body><button id="skip">Skip Intro</button></body></html>`,
+    settings: { introDelaySeconds: 1 }
+  });
+
+  await wait(50);
+  window.document.getElementById("skip").remove();
+
+  await wait(1200);
+  assert.strictEqual(window.__clickedElements.length, 0);
+});
+
+test("does not click if the delayed button is hidden before the delay elapses", async () => {
+  const { window } = loadContentScript({
+    url: "https://app.plex.tv/web/index.html",
+    html: `<!DOCTYPE html><html><body><button id="skip">Skip Intro</button></body></html>`,
+    settings: { introDelaySeconds: 1 }
+  });
+
+  await wait(50);
+  window.document.getElementById("skip").style.display = "none";
+
+  await wait(1200);
+  assert.strictEqual(window.__clickedElements.length, 0);
+});
+
+test("intro and credits delays run independently", async () => {
+  const { window } = loadContentScript({
+    url: "https://app.plex.tv/web/index.html",
+    html: `<!DOCTYPE html><html><body>
+      <button id="intro">Skip Intro</button>
+      <button id="credits">Skip Credits</button>
+    </body></html>`,
+    settings: { introDelaySeconds: 0, creditsDelaySeconds: 1 }
+  });
+
+  await wait(50);
+  assert.strictEqual(window.__clickedElements.length, 1, "Skip Intro should click immediately");
+  assert.strictEqual(window.__clickedElements[0], window.document.getElementById("intro"));
+
+  await wait(1100);
+  assert.strictEqual(window.__clickedElements.length, 2, "Skip Credits should click after its own delay");
+});