chore(utils): blank character detection

src/lib/utils/blank.test.ts

@@ -0,0 +1,59 @@
+import { describe, it, expect } from 'vitest';
+import { isBlankCharacter } from './blank';
+import type { Character } from '../types';
+
+const template = {
+	id: 'preset:standard',
+	name: 'Standard',
+	description: '',
+	schemaVersion: 1,
+	records: [
+		{
+			type: 'public',
+			expanded: true,
+			fields: [
+				{ label: 'Name', type: 'text' as const },
+				{ label: 'Species', type: 'species' as const },
+				{ label: 'Spoken Languages', type: 'languages' as const }
+			]
+		}
+	]
+};
+
+function makeChar(data: Record<string, unknown>): Character {
+	return { id: 'test', template, data };
+}
+
+describe('isBlankCharacter', () => {
+	it('returns true for empty data', () => {
+		expect(isBlankCharacter(makeChar({}))).toBe(true);
+	});
+
+	it('returns true when all values are empty strings', () => {
+		expect(isBlankCharacter(makeChar({ name: '', species: '' }))).toBe(true);
+	});
+
+	it('returns false when any string has a value', () => {
+		expect(isBlankCharacter(makeChar({ name: 'Yury Zakharov' }))).toBe(false);
+	});
+
+	it('returns true for empty arrays', () => {
+		expect(isBlankCharacter(makeChar({ 'spoken-languages': [] }))).toBe(true);
+	});
+
+	it('returns true when languages is just the default', () => {
+		expect(isBlankCharacter(makeChar({ 'spoken-languages': ['Tau Ceti Basic'] }))).toBe(true);
+	});
+
+	it('returns false when languages has custom values', () => {
+		expect(isBlankCharacter(makeChar({ 'spoken-languages': ['Tau Ceti Basic', "Siik'maas"] }))).toBe(false);
+	});
+
+	it('returns true for zero numbers', () => {
+		expect(isBlankCharacter(makeChar({ height: 0, weight: 0 }))).toBe(true);
+	});
+
+	it('returns false for non-zero numbers', () => {
+		expect(isBlankCharacter(makeChar({ height: 180 }))).toBe(false);
+	});
+});

src/lib/utils/blank.ts

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+import type { Character } from '../types';
+
+const DEFAULT_LANGUAGES = ['Tau Ceti Basic'];
+
+export function isBlankCharacter(char: Character): boolean {
+	for (const value of Object.values(char.data)) {
+		if (value === '' || value === undefined || value === null || value === 0) continue;
+		if (Array.isArray(value)) {
+			if (value.length === 0) continue;
+			if (value.length === 1 && DEFAULT_LANGUAGES.includes(value[0])) continue;
+			return false;
+		}
+		return false;
+	}
+	return true;
+}