Support of the CLI config.

Signed-off-by: Akos Kitta <kittaakos@typefox.io>

arduino-ide-extension/src/node/config-file-validator.ts

@@ -0,0 +1,55 @@
+import * as Ajv from 'ajv';
+import * as fs from './fs-extra';
+import { injectable } from 'inversify';
+import { CLI_CONFIG_SCHEMA_PATH, DefaultCliConfig } from './cli-config';
+
+@injectable()
+export class ConfigFileValidator {
+
+    protected readonly function = new Ajv().compile(JSON.parse(fs.readFileSync(CLI_CONFIG_SCHEMA_PATH, 'utf8')));
+
+    async validate(pathOrObject: string | object): Promise<boolean> {
+        return this.doValidate(typeof pathOrObject === 'string' ? fs.readFileSync(pathOrObject) : pathOrObject);
+    }
+
+    protected async doValidate(object: object): Promise<boolean> {
+        const valid = this.function(object);
+        if (!valid) {
+            return false;
+        }
+        if (!DefaultCliConfig.is(object)) {
+            return false;
+        }
+
+        const { directories: { data, downloads, user } } = object;
+        for (const path of [data, downloads, user]) {
+            const validPath = await this.isValidPath(path);
+            if (!validPath) {
+                return false;
+            }
+        }
+
+
+        const port = typeof object.daemon.port === 'string' ? Number.parseInt(object.daemon.port, 10) : object.daemon.port;
+        if (Number.isNaN(port) || port <= 0) {
+            return false;
+        }
+        return true;
+    }
+
+    protected async isValidPath(path: string): Promise<boolean> {
+        try {
+            if (!path.trim()) {
+                return false;
+            }
+            const exists = await fs.exists(path);
+            if (!exists) {
+                await fs.mkdirp(path);
+            }
+            return true;
+        } catch {
+            return false;
+        }
+    }
+
+}