add code-server support (#497)

Author: shalldie

Diff for: docs/common-issues.md

@@ -50,6 +50,8 @@ three ways:
 - linux:
   - Run `sudo chmod -R a+rw /usr/share/code`
   - Some Arch Linux: `sudo chmod -R a+rw /opt/visual-studio-code`
+  - Code Server (docker): `sudo chmod -R a+rw '/usr/lib/code-server'`
+    - code-server needs to force browser refresh (avoid caching) for configuration to take effect.
 
 ## Unsupported environment
 

Diff for: docs/common-issues.zh-CN.md

@@ -50,6 +50,8 @@
 - linux:
   - 执行 `sudo chmod -R a+rw /usr/share/code`。
   - 一些 Arch Linux: `sudo chmod -R a+rw /opt/visual-studio-code`
+  - Code Server (docker): `sudo chmod -R a+rw '/usr/lib/code-server'`
+    - code-server 需要强制刷新浏览器（避免缓存）来使配置生效。
 
 ## 不支持的环境
 

Diff for: src/background/Background.ts

@@ -130,11 +130,13 @@ export class Background implements Disposable {
      * @memberof Background
      */
     private async removeLegacyCssPatch() {
-        const hasInstalled = await this.cssFile.hasInstalled();
-        if (!hasInstalled) {
-            return;
-        }
-        await this.cssFile.uninstall();
+        try {
+            const hasInstalled = await this.cssFile.hasInstalled();
+            if (!hasInstalled) {
+                return;
+            }
+            await this.cssFile.uninstall();
+        } catch (ex) {}
     }
 
     /**
@@ -180,7 +182,7 @@ export class Background implements Disposable {
         }
 
         const scriptContent = PatchGenerator.create(this.config);
-        await this.jsFile.applyPatches(scriptContent);
+        return this.jsFile.applyPatches(scriptContent);
     }
 
     // #endregion
@@ -204,8 +206,9 @@ export class Background implements Disposable {
         if (this.config.enabled) {
             // 此时一般为 vscode更新、background更新
             if ([EFilePatchType.Legacy, EFilePatchType.None].includes(patchType)) {
-                await this.applyPatch();
-                vsHelp.showInfoRestart(l10n.t('Background has been changed! Please restart.'));
+                if (await this.applyPatch()) {
+                    vsHelp.showInfoRestart(l10n.t('Background has been changed! Please restart.'));
+                }
             }
         }
 
@@ -217,9 +220,9 @@ export class Background implements Disposable {
                     return;
                 }
 
-                // 0~500ms 的延时，对于可能的多实例，错开对于文件的操作
+                // 50~550ms 的延时，对于可能的多实例，错开对于文件的操作
                 // 虽然有锁了，但这样更安心 =。=
-                await utils.sleep(200 + ~~(Math.random() * 800));
+                await utils.sleep(50 + ~~(Math.random() * 500));
 
                 this.onConfigChange();
             })

Diff for: src/background/PatchFile/PatchFile.base.ts

@@ -99,7 +99,15 @@ export abstract class AbsPatchFile {
                 await utils.sudoExec(cmdarg, { name: 'Background Extension' });
                 return true;
             } catch (e: any) {
-                await vsc.window.showErrorMessage(e.message);
+                vsc.window.showErrorMessage(e.message, { title: 'Common Issue' }).then(confirm => {
+                    if (!confirm) {
+                        return;
+                    }
+                    const helpLink =
+                        'https://github.com/shalldie/vscode-background/blob/master/docs/common-issues.md#read-only-file-system';
+
+                    vsc!.env!.openExternal(vsc!.Uri.parse(helpLink));
+                });
                 return false;
             } finally {
                 await fs.promises.rm(tempFilePath, { force: true });
@@ -119,10 +127,10 @@ export abstract class AbsPatchFile {
      *
      * @abstract
      * @param {string} patch
-     * @return {*}  {Promise<void>}
+     * @return {*}  {Promise<boolean>}
      * @memberof AbsPatchFile
      */
-    public abstract applyPatches(patch: string): Promise<void>;
+    public abstract applyPatches(patch: string): Promise<boolean>;
 
     /**
      * Get the clean content without patches.

Diff for: src/background/PatchFile/PatchFile.javascript.ts

@@ -12,7 +12,7 @@ import { AbsPatchFile } from './PatchFile.base';
  * @extends {AbsPatchFile}
  */
 export class JsPatchFile extends AbsPatchFile {
-    public async applyPatches(patchContent: string) {
+    public async applyPatches(patchContent: string): Promise<boolean> {
         let content = await this.getContent();
         content = this.cleanPatches(content);
         content += [
@@ -22,7 +22,7 @@ export class JsPatchFile extends AbsPatchFile {
             '// vscode-background-end'
         ].join('\n');
 
-        await this.write(content);
+        return this.write(content);
     }
 
     protected cleanPatches(content: string): string {

Diff for: src/utils/index.ts

@@ -10,6 +10,15 @@ export namespace utils {
      */
     export const isZHCN = /^zh/.test(vsc?.env.language || '');
 
+    /**
+     * if desktop
+     *
+     * desktop: `desktop`
+     * code-server: `server-distro`
+     * See: https://code.visualstudio.com/api/references/vscode-api#env
+     */
+    export const isDesktop = vsc?.env.appHost === 'desktop';
+
     /**
      * 等待若干时间
      *

Diff for: src/utils/vscodePath.ts

@@ -1,5 +1,6 @@
 import path from 'path';
 
+import { utils } from './index';
 import { vsc } from './vsc';
 
 // 基础目录
@@ -17,18 +18,25 @@ const cssPath = (() => {
     // https://github.com/microsoft/vscode/pull/141263
     const webPath = getCssPath('workbench.web.main.css');
 
-    // See https://code.visualstudio.com/api/references/vscode-api#env
-    switch (vsc?.env.appHost) {
-        case 'desktop':
-            return defPath;
-        case 'web':
-        default:
-            return webPath;
+    if (utils.isDesktop) {
+        return defPath;
     }
+    return webPath;
 })();
 
-// /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js
-const jsPath = path.join(base, 'vs/workbench/workbench.desktop.main.js');
+const jsPath = (() => {
+    // See https://code.visualstudio.com/api/references/vscode-api#env
+
+    // desktop
+    // /Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/workbench.desktop.main.js
+    if (utils.isDesktop) {
+        return path.join(base, 'vs/workbench/workbench.desktop.main.js');
+    }
+
+    // code-server
+    // /usr/lib/code-server/lib/vscode/out/vs/code/browser/workbench/workbench.js
+    return path.join(base, 'vs/code/browser/workbench/workbench.js');
+})();
 
 export const vscodePath = {
     /**