majiayu000 Data Architecture Skill
Overview
This project uses a single source of truth pattern for all data. All personal information, project details, and configuration data is centralized in typed data files.
Core Principle: Single Source of Truth
Rule: Never hardcode personal data. Always reference data files.
// ❌ WRONG - Hardcoded data
const email = "me@omerakben.com";
const name = "Omer Akben";
// ✅ CORRECT - Reference data file
import { facts } from "@/data/facts";
const email = facts.contact.email;
const name = facts.personal.name;
```typescript
## Data File Structure
### Primary Data Files
```typescript
src/data/
├── facts.ts # Personal info, skills, experience
├── projects.ts # Project catalog with metadata
└── ... # Other data files
src/config/
└── assistantFaq.ts # FAQ and intent libraries
```typescript
## facts.ts Architecture
**Location:** `src/data/facts.ts`
### Structure Overview
```typescript
export const facts = {
personal: {
name: string;
title: string;
location: LocationInfo;
bio: string;
tagline: string;
},
contact: {
email: string;
phone: string;
github: string;
linkedin: string;
calendly: string;
},
professional: {
experience: Experience[];
education: Education[];
skills: Skill[];
certifications: Certification[];
workAuthorization: WorkAuthorization; // Added 2025-11-02
},
preferences: {
timezone: string;
availability: string;
}
};
```typescript
### Type Definitions
```typescript
interface LocationInfo {
city: string;
state: string;
country: string;
timezone: string;
}
interface Experience {
id: string;
company: string;
position: string;
startDate: string;
endDate: string | 'Present';
description: string;
technologies: string[];
achievements: string[];
}
interface Skill {
id: string;
name: string;
category: SkillCategory;
level: SkillLevel;
yearsOfExperience: number;
}
interface WorkAuthorization {
status: string;
officialTitle: string;
sponsorshipRequired: boolean;
employmentRestrictions: boolean;
eligibleEmployers: string;
proofDocument: string;
summary: string;
}
```typescript
### Work Authorization Data
**Added:** November 2, 2025
**Location:** `facts.professional.workAuthorization`
```typescript
workAuthorization: {
status: "U.S. Permanent Resident (Green Card)",
officialTitle: "Lawful Permanent Resident (LPR)",
sponsorshipRequired: false,
employmentRestrictions: false,
eligibleEmployers: "Any U.S. employer",
proofDocument: "Form I-551 (Permanent Resident Card)",
summary: "Authorized to work for any U.S. employer without restrictions or sponsorship requirements."
}
```typescript
**Usage:** AI agent references this when answering recruiter questions
## projects.ts Architecture
**Location:** `src/data/projects.ts`
### Structure
```typescript
export interface Project {
id: string;
slug: string;
title: string;
tagline: string;
description: string;
longDescription: string;
technologies: Technology[];
category: ProjectCategory;
featured: boolean;
showcase: boolean;
liveUrl?: string;
githubUrl?: string;
imageUrl: string;
metrics?: ProjectMetrics;
testimonials?: Testimonial[];
}
export const projects: Project[] = [
// Array of all projects
];
```typescript
### Helper Functions
```typescript
// Get projects by category
export function getProjectsByCategory(category: ProjectCategory): Project[] {
return projects.filter(p => p.category === category);
}
// Get featured projects
export function getFeaturedProjects(): Project[] {
return projects.filter(p => p.featured);
}
// Get project by slug
export function getProjectBySlug(slug: string): Project | undefined {
return projects.find(p => p.slug === slug);
}
// Get all technologies used
export function getAllTechnologies(): Technology[] {
const techSet = new Set<Technology>();
projects.forEach(p => p.technologies.forEach(t => techSet.add(t)));
return Array.from(techSet);
}
```typescript
### Usage Pattern
```typescript
import { projects, getFeaturedProjects, getProjectBySlug } from "@/data/projects";
// In component
const featured = getFeaturedProjects();
const project = getProjectBySlug(params.slug);
```typescript
## Type Safety Patterns
### 1. Const Assertions
```typescript
export const SKILL_CATEGORIES = [
'Frontend',
'Backend',
'DevOps',
'AI/ML',
] as const;
export type SkillCategory = typeof SKILL_CATEGORIES[number];
// Type is: 'Frontend' | 'Backend' | 'DevOps' | 'AI/ML'
```typescript
### Benefits
- Autocomplete in IDE
- Type checking
- Single source for both runtime and types
### 2. Branded Types
```typescript
type ProjectId = string & { readonly __brand: 'ProjectId' };
type UserId = string & { readonly __brand: 'UserId' };
// Prevents mixing up IDs
function getProject(id: ProjectId) { /* ... */ }
function getUser(id: UserId) { /* ... */ }
// TypeScript error: types are incompatible
const projectId: ProjectId = 'proj_123' as ProjectId;
const userId: UserId = 'user_456' as UserId;
getProject(userId); // ❌ Error!
```typescript
### 3. Discriminated Unions
```typescript
type Education =
| { type: 'degree'; university: string; degree: string; major: string; }
| { type: 'bootcamp'; program: string; completion: string; }
| { type: 'certification'; name: string; issuer: string; };
function formatEducation(edu: Education): string {
switch (edu.type) {
case 'degree':
return `${edu.degree} in ${edu.major} from ${edu.university}`;
case 'bootcamp':
return `${edu.program}`;
case 'certification':
return `${edu.name} by ${edu.issuer}`;
}
}
```typescript
## Zod Validation Integration
### Schema Definitions
**Location:** `src/lib/agent-tools/schemas.ts`
```typescript
import { z } from 'zod';
export const ContactSchema = z.object({
name: z.string().min(1),
email: z.string().email(),
company: z.string().optional(),
message: z.string().min(10),
});
export type Contact = z.infer<typeof ContactSchema>;
```typescript
### Runtime Validation
```typescript
// API route handler
export async function POST(request: Request) {
const body = await request.json();
// Validate with Zod
const result = ContactSchema.safeParse(body);
if (!result.success) {
return Response.json({
success: false,
error: result.error.format(),
}, { status: 400 });
}
// Type-safe data access
const { name, email, company, message } = result.data;
// ...
}
```typescript
### Benefits of Zod
- Runtime validation
- Type inference from schemas
- Detailed error messages
- Parse, transform, and validate in one step
## AI Agent Data Integration
### Knowledge Base
**Location:** `src/lib/agent-knowledge-base.ts`
The AI agent consumes data from facts.ts:
```typescript
import { facts } from '@/data/facts';
export const agentKnowledgeBase = `
# Core Identity
Name: ${facts.personal.name}
Title: ${facts.personal.title}
Location: ${facts.personal.location.city}, ${facts.personal.location.state}
# Work Authorization
Status: ${facts.professional.workAuthorization.status}
Sponsorship Required: ${facts.professional.workAuthorization.sponsorshipRequired}
# Skills
${facts.professional.skills.map(s => `- ${s.name} (${s.level})`).join('\n')}
# Contact
Email: ${facts.contact.email}
LinkedIn: ${facts.contact.linkedin}
`;
```typescript
### Benefits
- Single source ensures consistency
- Updates to facts.ts automatically flow to AI
- No hardcoded data in agent prompts
### Tool Implementations
AI agent tools reference data files:
```typescript
// src/app/api/tools/get-contact/route.ts
import { facts } from '@/data/facts';
export async function POST() {
return Response.json({
success: true,
data: {
email: facts.contact.email,
linkedin: facts.contact.linkedin,
github: facts.contact.github,
calendly: facts.contact.calendly,
}
});
}
```typescript
## Adding New Data
### Step 1: Update Type Definition
```typescript
// src/data/facts.ts
interface Facts {
personal: PersonalInfo;
contact: ContactInfo;
professional: ProfessionalInfo;
newSection: NewSectionType; // Add new section
}
```typescript
### Step 2: Add Data
```typescript
export const facts: Facts = {
// ... existing data
newSection: {
field1: 'value1',
field2: 'value2',
}
};
```typescript
### Step 3: Update AI Knowledge Base
```typescript
// src/lib/agent-knowledge-base.ts
export const agentKnowledgeBase = `
...existing content...
# New Section
${facts.newSection.field1}
${facts.newSection.field2}
`;
```typescript
### Step 4: Add Tests
```typescript
// src/data/facts.test.ts
describe('facts.newSection', () => {
it('should have required fields', () => {
expect(facts.newSection.field1).toBeDefined();
expect(facts.newSection.field2).toBeDefined();
});
});
```typescript
## Data Validation Patterns
### 1. Email Validation
```typescript
import { z } from 'zod';
const EmailSchema = z.string()
.email('Invalid email format')
.toLowerCase()
.trim();
// Usage
const email = EmailSchema.parse('USER@EXAMPLE.COM');
// Result: 'user@example.com'
```typescript
### 2. URL Validation
```typescript
const UrlSchema = z.string()
.url('Invalid URL format')
.refine(url => url.startsWith('https://'), {
message: 'URL must use HTTPS'
});
```typescript
### 3. Date Validation
```typescript
const DateSchema = z.string()
.regex(/^\d{4}-\d{2}-\d{2}$/, 'Date must be YYYY-MM-DD')
.refine(date => !isNaN(Date.parse(date)), {
message: 'Invalid date'
});
```typescript
### 4. Enum Validation
```typescript
const SkillLevelSchema = z.enum([
'Beginner',
'Intermediate',
'Advanced',
'Expert'
]);
type SkillLevel = z.infer<typeof SkillLevelSchema>;
```typescript
## Helper Function Patterns
### 1. Filter Helpers
```typescript
// Get items by property
export function getByCategory<T extends { category: string }>(
items: T[],
category: string
): T[] {
return items.filter(item => item.category === category);
}
// Get items by multiple criteria
export function getByFilters<T>(
items: T[],
filters: Partial<T>
): T[] {
return items.filter(item => {
return Object.entries(filters).every(([key, value]) => {
return item[key as keyof T] === value;
});
});
}
```typescript
### 2. Sort Helpers
```typescript
// Sort by date
export function sortByDate<T extends { date: string }>(
items: T[],
order: 'asc' | 'desc' = 'desc'
): T[] {
return [...items].sort((a, b) => {
const dateA = new Date(a.date).getTime();
const dateB = new Date(b.date).getTime();
return order === 'asc' ? dateA - dateB : dateB - dateA;
});
}
// Sort by property
export function sortBy<T, K extends keyof T>(
items: T[],
key: K,
order: 'asc' | 'desc' = 'asc'
): T[] {
return [...items].sort((a, b) => {
if (a[key] < b[key]) return order === 'asc' ? -1 : 1;
if (a[key] > b[key]) return order === 'asc' ? 1 : -1;
return 0;
});
}
```typescript
### 3. Transform Helpers
```typescript
// Group by property
export function groupBy<T, K extends keyof T>(
items: T[],
key: K
): Record<string, T[]> {
return items.reduce((acc, item) => {
const groupKey = String(item[key]);
if (!acc[groupKey]) acc[groupKey] = [];
acc[groupKey].push(item);
return acc;
}, {} as Record<string, T[]>);
}
// Map to lookup object
export function toMap<T extends { id: string }>(
items: T[]
): Record<string, T> {
return items.reduce((acc, item) => {
acc[item.id] = item;
return acc;
}, {} as Record<string, T>);
}
```typescript
## Testing Data Integrity
### Unit Tests
```typescript
// src/data/facts.test.ts
import { facts } from './facts';
describe('facts.ts data integrity', () => {
it('should have valid email', () => {
expect(facts.contact.email).toMatch(/^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/);
});
it('should have all required skills', () => {
expect(facts.professional.skills.length).toBeGreaterThan(0);
facts.professional.skills.forEach(skill => {
expect(skill.name).toBeTruthy();
expect(skill.category).toBeTruthy();
expect(skill.level).toBeTruthy();
});
});
it('should have valid work authorization', () => {
const { workAuthorization } = facts.professional;
expect(workAuthorization.status).toBeTruthy();
expect(typeof workAuthorization.sponsorshipRequired).toBe('boolean');
expect(typeof workAuthorization.employmentRestrictions).toBe('boolean');
});
});
```typescript
### Zod Schema Tests
```typescript
import { ContactSchema } from './schemas';
describe('ContactSchema validation', () => {
it('should accept valid contact', () => {
const valid = {
name: 'John Doe',
email: 'john@example.com',
message: 'Hello, this is a test message.',
};
const result = ContactSchema.safeParse(valid);
expect(result.success).toBe(true);
});
it('should reject invalid email', () => {
const invalid = {
name: 'John Doe',
email: 'not-an-email',
message: 'Hello, world',
};
const result = ContactSchema.safeParse(invalid);
expect(result.success).toBe(false);
});
});
```typescript
## Common Mistakes
### Mistake 1: Hardcoding Data
```typescript
// ❌ WRONG
function Header() {
return <h1>Omer Akben - AI Engineer</h1>;
}
// ✅ CORRECT
import { facts } from '@/data/facts';
function Header() {
return <h1>{facts.personal.name} - {facts.personal.title}</h1>;
}
```typescript
### Mistake 2: Inconsistent Data Format
```typescript
// ❌ WRONG - Different date formats
{
startDate: '2024-01-01',
endDate: 'January 2024',
}
// ✅ CORRECT - Consistent ISO format
{
startDate: '2024-01-01',
endDate: '2024-01-31',
}
```typescript
### Mistake 3: No Validation
```typescript
// ❌ WRONG - Assumes data is valid
const user = JSON.parse(request.body);
saveUser(user);
// ✅ CORRECT - Validate first
const result = UserSchema.safeParse(JSON.parse(request.body));
if (result.success) {
saveUser(result.data);
}
```typescript
## Data Update Checklist
When adding or updating data:
- [ ] Update type definitions first
- [ ] Add/modify data in facts.ts or projects.ts
- [ ] Update AI knowledge base if needed
- [ ] Add helper functions if beneficial
- [ ] Write unit tests for new data
- [ ] Verify AI agent responses still accurate
- [ ] Check that related tools still work
- [ ] Update documentation if structure changed
## Quick Reference
```typescript
// Import data
import { facts } from '@/data/facts';
import { projects, getProjectBySlug } from '@/data/projects';
// Access data
const email = facts.contact.email;
const name = facts.personal.name;
const project = getProjectBySlug('portfolio');
// Validate with Zod
const result = Schema.safeParse(data);
if (result.success) {
// Use result.data
}
// Helper pattern
export function getFiltered<T>(items: T[], predicate: (item: T) => boolean): T[] {
return items.filter(predicate);
}
```typescript
## Related Files
- `src/data/facts.ts` - Single source of truth for personal data
- `src/data/projects.ts` - Project catalog with helpers
- `src/lib/agent-knowledge-base.ts` - AI agent data integration
- `src/lib/agent-tools/schemas.ts` - Zod validation schemas
- `src/config/assistantFaq.ts` - FAQ and intent libraries