Ready to check API tokens

src/entities/RequestHandler.ts

@@ -0,0 +1,94 @@
+import { Response, Request } from "express";
+
+/**
+ * Response to a request
+ * 
+ * @author Pierre HUBERT
+ */
+
+export class RequestHandler {
+	public constructor(private req : Request, private response : Response) {}
+
+	/**
+	 * Get a parameter included in the post request
+	 * 
+	 * @param name Name of the parameter to get
+	 */
+	private getPostParam(name : string) : any {
+		return this.req.body[name];
+	}
+
+	/**
+	 * Get a String from the request
+	 * 
+	 * @param name The name of the string to get
+	 * @param minLength Minimal required size of the string
+	 * @param required If set to true (true by default), an error will
+	 * be thrown if the string is not included in the request
+	 */
+	public getString(name : string, minLength : number = 1, required : boolean = true) : string {
+		const param = this.getPostParam(name);
+
+		// Check if parameter was not found
+		if(param == undefined) {
+			if(required)
+				this.error(400, "Could not find required string: '"+name+"'");
+			return "";
+		}
+
+		if(param.length < minLength)
+			this.error(400, "Parameter "+name+" is too short!");
+
+		return "";
+	}
+
+
+	/**
+	 * Validate API tokens
+	 * 
+	 * @throws If the tokens could not be validated
+	 */
+	public async checkAPITokens() {
+
+		// Extract API name & token from request
+		const apiName = this.getString("serviceName");
+		const apiToken = this.getString("serviceToken");
+		
+		// Validate the token
+	}
+
+	/**
+	 * Output an error code
+	 * 
+	 * @param code HTTP Status code
+	 * @param message The message to send
+	 */
+	public error(code : number, message : string) {
+		this.response.status(code).send({
+			code: code,
+			message: message
+		});
+
+		throw Error("Could not complete request!");
+	}
+
+	/**
+	 * Return a successful operation
+	 * 
+	 * @param message Message associated to success
+	 */
+	public success(message: string) {
+		this.response.send({
+			success: message
+		});
+	}
+
+	/**
+	 * Send some data to the server
+	 * 
+	 * @param data The data to send back to the server
+	 */
+	public send(data: any) {
+		this.response.send(data);
+	}
+}