add frontend frame and service logic

src/helpers.ts

@@ -0,0 +1,46 @@
+import fs from "fs";
+import {EndpointDef} from "./systemGenService";
+import path from "path";
+import {createServiceFunc} from "./views/service-creator";
+
+function uppercaseFirstLetter(input: string) {
+    return input.charAt(0).toUpperCase() + input.slice(1);
+}
+
+function lowercaseFirstLetter(input: string) {
+    return input.charAt(0).toLowerCase() + input.slice(1);
+}
+
+function initializeComponentFile(sourceFile: string, destinationFile: string, component: string, outDir: string) {
+    return new Promise<void>((resolve, reject) => {
+        fs.rename(sourceFile, destinationFile, (err: any) => {
+            let fileContents = fs.readFileSync(destinationFile, 'utf8');
+            var uppercaseFirstLetterComponentName = uppercaseFirstLetter(component);
+            var lowercaseFirstLetterComponentName = lowercaseFirstLetter(component);
+            let newFileContents = fileContents.split('{{Component}}').join(uppercaseFirstLetterComponentName);
+            newFileContents = newFileContents.split('{{component}}').join(lowercaseFirstLetterComponentName);
+            fs.writeFileSync(destinationFile, newFileContents, 'utf8');
+            resolve();
+        });
+    })
+}
+
+function insertServiceCode(view: EndpointDef, outDir: string): Promise<void> {
+    return new Promise<void>((resolve) => {
+        const separator: string = `// SYSTEM-BUILDER-${view.component}-service`;
+        let fileLocation = path.join(process.cwd(), outDir, 'src', 'components', view.component, `${view.component}Service.ts`);
+        let initServiceFile: string = fs.readFileSync(fileLocation, 'utf8');
+        let parts = initServiceFile.split(separator);
+        parts[0] = parts[0] + createServiceFunc(view);
+        let newServiceFile = parts.join(separator);
+        fs.writeFileSync(fileLocation, newServiceFile, 'utf8');
+        resolve();
+    });
+}
+
+export {
+    uppercaseFirstLetter,
+    lowercaseFirstLetter,
+    initializeComponentFile,
+    insertServiceCode
+}