feat(capacitor): install platform if missing

Author: imhoffd

packages/ionic/src/commands/capacitor/base.ts

@@ -1,6 +1,8 @@
 import chalk from 'chalk';
+import * as path from 'path';
 
 import { ERROR_SHELL_COMMAND_NOT_FOUND, ShellCommandError } from '@ionic/cli-framework';
+import { pathExists } from '@ionic/cli-framework/utils/fs';
 import { CommandInstanceInfo } from '@ionic/cli-utils';
 import { Command } from '@ionic/cli-utils/lib/command';
 import { FatalException } from '@ionic/cli-utils/lib/errors';
@@ -51,6 +53,24 @@ export abstract class CapacitorCommand extends Command {
     }
   }
 
+  async checkForPlatformInstallation(platform: string) {
+    if (!this.project) {
+      throw new FatalException('Cannot use Capacitor outside a project directory.');
+    }
+
+    if (platform) {
+      const integrationRoot = this.project.directory;
+      const platformsToCheck = ['android', 'ios', 'electron'];
+      const platforms = (await Promise.all(platformsToCheck.map(async (p): Promise<[string, boolean]> => [p, await pathExists(path.resolve(integrationRoot, p))])))
+        .filter(([, e]) => e)
+        .map(([p]) => p);
+
+      if (!platforms.includes(platform)) {
+        await this._runCapacitor(['add', platform]);
+      }
+    }
+  }
+
   private async promptToInstallCapacitor(): Promise<boolean> {
     if (!this.project) {
       throw new FatalException(`Cannot use Capacitor outside a project directory.`);

packages/ionic/src/commands/capacitor/copy.ts

@@ -27,6 +27,10 @@ ${chalk.green('ionic capacitor copy')} will do the following:
 
   async preRun(inputs: CommandLineInputs, options: CommandLineOptions, runinfo: CommandInstanceInfo): Promise<void> {
     await this.preRunChecks(runinfo);
+
+    if (inputs[0]) {
+      await this.checkForPlatformInstallation(inputs[0]);
+    }
   }
 
   async run(inputs: CommandLineInputs, options: CommandLineOptions): Promise<void> {

packages/ionic/src/commands/capacitor/open.ts

@@ -39,6 +39,8 @@ ${chalk.green('ionic capacitor open')} will do the following:
 
       inputs[0] = platform.trim();
     }
+
+    await this.checkForPlatformInstallation(inputs[0]);
   }
 
   async run(inputs: CommandLineInputs, options: CommandLineOptions): Promise<void> {

packages/ionic/src/commands/capacitor/run.ts

@@ -90,6 +90,8 @@ ${chalk.cyan('[1]')}: ${chalk.bold('https://ionicframework.com/docs/developer-re
 
       inputs[0] = platform.trim();
     }
+
+    await this.checkForPlatformInstallation(inputs[0]);
   }
 
   async run(inputs: CommandLineInputs, options: CommandLineOptions): Promise<void> {

packages/ionic/src/commands/capacitor/sync.ts

@@ -29,6 +29,10 @@ ${chalk.green('ionic capacitor sync')} will do the following:
 
   async preRun(inputs: CommandLineInputs, options: CommandLineOptions, runinfo: CommandInstanceInfo): Promise<void> {
     await this.preRunChecks(runinfo);
+
+    if (inputs[0]) {
+      await this.checkForPlatformInstallation(inputs[0]);
+    }
   }
 
   async run(inputs: CommandLineInputs, options: CommandLineOptions): Promise<void> {

packages/ionic/src/commands/capacitor/update.ts

@@ -28,6 +28,10 @@ ${chalk.green('ionic capacitor update')} will do the following:
 
   async preRun(inputs: CommandLineInputs, options: CommandLineOptions, runinfo: CommandInstanceInfo): Promise<void> {
     await this.preRunChecks(runinfo);
+
+    if (inputs[0]) {
+      await this.checkForPlatformInstallation(inputs[0]);
+    }
   }
 
   async run(inputs: CommandLineInputs, options: CommandLineOptions): Promise<void> {