From ed9e36185cf7f410ee0e14684e1c119b6e005862 Mon Sep 17 00:00:00 2001
From: Xmader <xmader@outlook.com>
Date: Sat, 18 Jan 2020 18:01:56 -0500
Subject: [PATCH] =?UTF-8?q?v3.1.0=20-=20=E5=9C=A8=E6=9C=89=E4=BB=BB?=
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---
 app/package.json                  |  2 +-
 app/plugins/index.js              |  1 +
 app/plugins/power-save-blocker.js | 62 +++++++++++++++++++++++++++++++
 3 files changed, 64 insertions(+), 1 deletion(-)
 create mode 100644 app/plugins/power-save-blocker.js

diff --git a/app/package.json b/app/package.json
index c0c3e40..b484511 100644
--- a/app/package.json
+++ b/app/package.json
@@ -1,6 +1,6 @@
 {
     "name": "aria-ng-gui",
-    "version": "3.0.0",
+    "version": "3.1.0",
     "private": true,
     "description": "AriaNg GUI",
     "main": "app.js",
diff --git a/app/plugins/index.js b/app/plugins/index.js
index fa55052..eb9b654 100644
--- a/app/plugins/index.js
+++ b/app/plugins/index.js
@@ -20,6 +20,7 @@ const plugins = [
     require("./save-local-config"),
     require("./notification"),
     require("./trackers"),
+    require("./power-save-blocker"),
 ]
 
 module.exports = plugins
diff --git a/app/plugins/power-save-blocker.js b/app/plugins/power-save-blocker.js
new file mode 100644
index 0000000..ca5623a
--- /dev/null
+++ b/app/plugins/power-save-blocker.js
@@ -0,0 +1,62 @@
+/*!
+ * AriaNg GUI
+ * 
+ * Copyright (c) 2018-2020 Xmader
+ * Released under the MIT license
+ * 
+ * Source Code: https://github.com/Xmader/aria-ng-gui
+ * 
+ * power-save-blocker.js - 在有任务正在下载时阻止系统休眠，但允许屏幕关闭
+ * https://github.com/Xmader/aria-ng-gui/issues/34
+ */
+
+// @ts-check
+
+const { powerSaveBlocker } = require("electron").remote
+
+class PowerSaveBlocker {
+
+    /** @type {number} */
+    id = null
+
+    start() {
+        if (this.id !== null) {
+            return
+        }
+
+        // 阻止系统休眠，但允许屏幕关闭
+        this.id = powerSaveBlocker.start("prevent-app-suspension")
+
+        console.log("powerSaveBlocker started")
+    }
+
+    stop() {
+        if (this.id !== null && powerSaveBlocker.isStarted(this.id)) {
+            powerSaveBlocker.stop(this.id)
+            this.id = null
+            console.log("powerSaveBlocker stopped")
+        }
+    }
+
+}
+
+const blocker = new PowerSaveBlocker()
+
+/**
+ * @typedef {import("./index").Plugin} Plugin
+ * @type {Plugin}
+ */
+module.exports = {
+    activate(context) {
+
+        context.addListener("downloading", (tasks) => {
+            const isDownloading = tasks.length > 0
+            if (isDownloading) {
+                blocker.start()
+            } else {
+                blocker.stop()
+            }
+        })
+
+    }
+}