Refactor validation

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

src/utilities/validation.ts

@@ -0,0 +1,85 @@
+import { isHexColor, isRgbColor } from './color';
+
+interface StringValidationResult {
+  valid: boolean;
+  raw: string;
+  parsed: string;
+  error?: string;
+}
+
+const validateMemeTitle = (title: string): StringValidationResult => {
+  const parsedTitle = title.trim();
+
+  if (parsedTitle.length === 0) {
+    return {
+      valid: false,
+      raw: title,
+      parsed: parsedTitle,
+      error: 'Title cannot be empty',
+    };
+  }
+
+  return {
+    valid: true,
+    raw: title,
+    parsed: parsedTitle,
+  };
+};
+
+const validateMemeDescription = (
+  description: string,
+): StringValidationResult => {
+  const parsedDescription = description.trim();
+
+  return {
+    valid: true,
+    raw: description,
+    parsed: parsedDescription,
+  };
+};
+
+const validateTagName = (name: string): StringValidationResult => {
+  const parsedName = name.trim();
+
+  if (parsedName.length === 0) {
+    return {
+      valid: false,
+      raw: name,
+      parsed: parsedName,
+      error: 'Name cannot be empty',
+    };
+  }
+
+  return {
+    valid: true,
+    raw: name,
+    parsed: parsedName,
+  };
+};
+
+const validateColor = (color: string): StringValidationResult => {
+  const parsedColor = color.trim().toLowerCase();
+
+  if (!isHexColor(parsedColor) && !isRgbColor(parsedColor)) {
+    return {
+      valid: false,
+      raw: color,
+      parsed: parsedColor,
+      error: 'Color must be a valid hex or rgb value',
+    };
+  }
+
+  return {
+    valid: true,
+    raw: color,
+    parsed: parsedColor,
+  };
+};
+
+export {
+  type StringValidationResult,
+  validateMemeTitle,
+  validateMemeDescription,
+  validateTagName,
+  validateColor,
+};