undefined

**Savings:**
- Cached: ~100 tokens (read cache file)
- Uncached: ~600 tokens (find TypeScript types, JSON schemas, Prisma, OpenAPI, GraphQL)
- **500 token savings (83%)** for subsequent runs

undefined

**Savings:**
- Grep approach: ~150 tokens (pattern matching only)
- Full file read: ~950 tokens (read all TypeScript files)
- **800 token savings (84%)**

undefined

cat <<'EOF'

**Savings:**
- Template-based: ~300 tokens (parameter substitution)
- LLM-generated: ~1,500 tokens (full generation with analysis)
- **1,200 token savings (80%)** per type

undefined

**Savings:**
- Full generation: ~7,500 tokens (50+ types)
- Sample generation: ~1,500 tokens (10 types)
- **1,000 token savings (87%)** per batch
- Users can run multiple times for comprehensive coverage

undefined

**Savings:**
- Existing mocks: ~150 tokens (early exit)
- Full generation: ~3,000+ tokens
- **2,850+ token savings (95%)** when mocks exist

undefined

if [ -f "$cache_file" ]; then
    cached_schema=$(jq -r ".\"$cache_key\"" "$cache_file" 2>/dev/null)
    if [ "$cached_schema" != "null" ]; then
        echo "$cached_schema"  # 50 tokens
        return
    fi
fi

# Parse schema (650 tokens)
parsed=$(parse_schema "$schema_file")
jq -n --arg key "$cache_key" --arg val "$parsed" '{($key): $val}' > "$cache_file"
echo "$parsed"

**Savings:**
- Cached parse: ~50 tokens
- Fresh parse: ~650 tokens (TypeScript parsing, JSON Schema validation)
- **600 token savings (92%)** for subsequent runs

undefined

**Savings:**
- Skip generated: ~50 tokens (cache check)
- Generate new: ~550 tokens (template expansion and file write)
- **500 token savings (91%)** for already generated mocks

undefined

if [ -f "$cache_file" ]; then
    method=$(jq -r ".\"$type:$format\"" "$cache_file" 2>/dev/null)
    if [ "$method" != "null" ]; then
        echo "$method"  # 30 tokens
        return
    fi
fi

# Determine Faker method (330 tokens)
case "$type:$format" in
    "string:email") method="faker.internet.email()" ;;
    "string:uuid") method="faker.string.uuid()" ;;
    "string:url") method="faker.internet.url()" ;;
    # ... more mappings
esac

jq -n --arg key "$type:$format" --arg val "$method" '{($key): $val}' > "$cache_file"
echo "$method"

**Savings:**
- Cached mapping: ~30 tokens
- Fresh mapping: ~330 tokens (type analysis and method selection)
- **300 token savings (91%)** per type field

#!/bin/bash

# TypeScript types
TS_TYPES=$(find . -name "*.ts" -type f \
    ! -path "*/node_modules/*" \
    ! -path "*/dist/*" \
    -exec grep -l "interface\|type.*=" {} \; 2>/dev/null | head -20)

if [ -n "$TS_TYPES" ]; then
    echo "✓ TypeScript type definitions found:"
    echo "$TS_TYPES" | sed 's/^/  /'
    echo ""
fi

# JSON Schemas
JSON_SCHEMAS=$(find . -name "*.schema.json" -type f 2>/dev/null)
if [ -n "$JSON_SCHEMAS" ]; then
    echo "✓ JSON Schema files found:"
    echo "$JSON_SCHEMAS" | sed 's/^/  /'
    echo ""
fi

# Prisma schema
if [ -f "prisma/schema.prisma" ]; then
    echo "✓ Prisma schema found: prisma/schema.prisma"
    echo ""
fi

# OpenAPI specs
OPENAPI_SPECS=$(find . -name "openapi*.yaml" -o -name "swagger*.json" 2>/dev/null)
if [ -n "$OPENAPI_SPECS" ]; then
    echo "✓ OpenAPI specifications found:"
    echo "$OPENAPI_SPECS" | sed 's/^/  /'
    echo ""
fi

# GraphQL schemas
GRAPHQL_SCHEMAS=$(find . -name "*.graphql" -o -name "schema.gql" 2>/dev/null)
if [ -n "$GRAPHQL_SCHEMAS" ]; then
    echo "✓ GraphQL schemas found:"
    echo "$GRAPHQL_SCHEMAS" | sed 's/^/  /'
    echo ""
fi

undefined

// Generated mock data from TypeScript types
import { faker } from '@faker-js/faker';

/**
 * User interface
 */
interface User {
  id: string;
  email: string;
  name: string;
  age: number;
  role: 'admin' | 'user' | 'guest';
  isActive: boolean;
  createdAt: Date;
  profile?: UserProfile;
}

interface UserProfile {
  bio?: string;
  avatarUrl?: string;
  location?: string;
  socialLinks?: {
    twitter?: string;
    github?: string;
  };
}

/**
 * Generate a single mock user
 */
export function createMockUser(overrides?: Partial<User>): User {
  return {
    id: faker.string.uuid(),
    email: faker.internet.email(),
    name: faker.person.fullName(),
    age: faker.number.int({ min: 18, max: 80 }),
    role: faker.helpers.arrayElement(['admin', 'user', 'guest']),
    isActive: faker.datatype.boolean(),
    createdAt: faker.date.past(),
    profile: createMockUserProfile(),
    ...overrides,
  };
}

/**
 * Generate mock user profile
 */
export function createMockUserProfile(
  overrides?: Partial<UserProfile>
): UserProfile {
  return {
    bio: faker.lorem.paragraph(),
    avatarUrl: faker.image.avatar(),
    location: faker.location.city(),
    socialLinks: {
      twitter: `https://twitter.com/${faker.internet.userName()}`,
      github: `https://github.com/${faker.internet.userName()}`,
    },
    ...overrides,
  };
}

/**
 * Generate multiple mock users
 */
export function createMockUsers(count: number = 10): User[] {
  return Array.from({ length: count }, () => createMockUser());
}

/**
 * Generate users with specific characteristics
 */
export function createMockAdminUser(): User {
  return createMockUser({
    role: 'admin',
    isActive: true,
  });
}

export function createMockInactiveUser(): User {
  return createMockUser({
    isActive: false,
  });
}

/**
 * Post interface
 */
interface Post {
  id: string;
  title: string;
  content: string;
  authorId: string;
  author: User;
  tags: string[];
  published: boolean;
  viewCount: number;
  createdAt: Date;
  updatedAt: Date;
}

/**
 * Generate a single mock post
 */
export function createMockPost(overrides?: Partial<Post>): Post {
  return {
    id: faker.string.uuid(),
    title: faker.lorem.sentence(),
    content: faker.lorem.paragraphs(3),
    authorId: faker.string.uuid(),
    author: createMockUser(),
    tags: faker.helpers.arrayElements(
      ['javascript', 'typescript', 'react', 'node', 'testing'],
      { min: 1, max: 3 }
    ),
    published: faker.datatype.boolean(),
    viewCount: faker.number.int({ min: 0, max: 10000 }),
    createdAt: faker.date.past(),
    updatedAt: faker.date.recent(),
    ...overrides,
  };
}

/**
 * Generate multiple mock posts
 */
export function createMockPosts(count: number = 10): Post[] {
  return Array.from({ length: count }, () => createMockPost());
}

/**
 * API Response wrapper
 */
interface ApiResponse<T> {
  data: T;
  status: number;
  message: string;
  timestamp: Date;
}

/**
 * Generate mock API response
 */
export function createMockApiResponse<T>(
  data: T,
  overrides?: Partial<ApiResponse<T>>
): ApiResponse<T> {
  return {
    data,
    status: 200,
    message: 'Success',
    timestamp: new Date(),
    ...overrides,
  };
}

/**
 * Generate mock error response
 */
export function createMockErrorResponse(
  message: string = 'An error occurred',
  status: number = 500
): ApiResponse<null> {
  return {
    data: null,
    status,
    message,
    timestamp: new Date(),
  };
}

/**
 * Paginated response
 */
interface PaginatedResponse<T> {
  items: T[];
  total: number;
  page: number;
  pageSize: number;
  hasMore: boolean;
}

/**
 * Generate mock paginated response
 */
export function createMockPaginatedResponse<T>(
  items: T[],
  page: number = 1,
  pageSize: number = 10
): PaginatedResponse<T> {
  const total = items.length;
  const start = (page - 1) * pageSize;
  const end = start + pageSize;
  const paginatedItems = items.slice(start, end);

  return {
    items: paginatedItems,
    total,
    page,
    pageSize,
    hasMore: end < total,
  };
}

// Generate mocks from JSON Schema
import Ajv from 'ajv';
import { faker } from '@faker-js/faker';

/**
 * JSON Schema to mock data generator
 */
export class JsonSchemaMockGenerator {
  private ajv: Ajv;

  constructor() {
    this.ajv = new Ajv();
  }

  /**
   * Generate mock data from JSON schema
   */
  generate(schema: any, count: number = 1): any[] {
    return Array.from({ length: count }, () => this.generateSingle(schema));
  }

  /**
   * Generate a single mock object from schema
   */
  private generateSingle(schema: any): any {
    if (schema.type === 'object') {
      return this.generateObject(schema);
    } else if (schema.type === 'array') {
      return this.generateArray(schema);
    } else {
      return this.generatePrimitive(schema);
    }
  }

  /**
   * Generate object from schema
   */
  private generateObject(schema: any): any {
    const obj: any = {};
    const properties = schema.properties || {};

    for (const [key, propSchema] of Object.entries(properties)) {
      // Check if property is required
      const isRequired = schema.required?.includes(key);

      if (isRequired || faker.datatype.boolean()) {
        obj[key] = this.generateSingle(propSchema);
      }
    }

    return obj;
  }

  /**
   * Generate array from schema
   */
  private generateArray(schema: any): any[] {
    const minItems = schema.minItems || 1;
    const maxItems = schema.maxItems || 5;
    const length = faker.number.int({ min: minItems, max: maxItems });

    return Array.from({ length }, () =>
      this.generateSingle(schema.items || {})
    );
  }

  /**
   * Generate primitive value from schema
   */
  private generatePrimitive(schema: any): any {
    const format = schema.format;
    const type = schema.type;

    // Handle format-specific generation
    if (format) {
      return this.generateByFormat(format, schema);
    }

    // Handle type-specific generation
    switch (type) {
      case 'string':
        if (schema.enum) {
          return faker.helpers.arrayElement(schema.enum);
        }
        return faker.lorem.word();

      case 'number':
      case 'integer':
        const min = schema.minimum || 0;
        const max = schema.maximum || 1000;
        return type === 'integer'
          ? faker.number.int({ min, max })
          : faker.number.float({ min, max, precision: 0.01 });

      case 'boolean':
        return faker.datatype.boolean();

      case 'null':
        return null;

      default:
        return null;
    }
  }

  /**
   * Generate value based on format
   */
  private generateByFormat(format: string, schema: any): any {
    switch (format) {
      case 'email':
        return faker.internet.email();
      case 'uri':
      case 'url':
        return faker.internet.url();
      case 'uuid':
        return faker.string.uuid();
      case 'date':
        return faker.date.past().toISOString().split('T')[0];
      case 'date-time':
        return faker.date.past().toISOString();
      case 'time':
        return faker.date.recent().toTimeString().split(' ')[0];
      case 'ipv4':
        return faker.internet.ipv4();
      case 'ipv6':
        return faker.internet.ipv6();
      case 'hostname':
        return faker.internet.domainName();
      default:
        return faker.lorem.word();
    }
  }
}

// Example usage
const userSchema = {
  type: 'object',
  required: ['id', 'email', 'name'],
  properties: {
    id: { type: 'string', format: 'uuid' },
    email: { type: 'string', format: 'email' },
    name: { type: 'string' },
    age: { type: 'integer', minimum: 18, maximum: 100 },
    role: { type: 'string', enum: ['admin', 'user', 'guest'] },
  },
};

const generator = new JsonSchemaMockGenerator();
const mockUsers = generator.generate(userSchema, 10);

// Test fixtures for different test frameworks
import { faker } from '@faker-js/faker';

/**
 * Base fixture factory
 */
export abstract class FixtureFactory<T> {
  /**
   * Create a single fixture
   */
  abstract create(overrides?: Partial<T>): T;

  /**
   * Create multiple fixtures
   */
  createMany(count: number, overrides?: Partial<T>): T[] {
    return Array.from({ length: count }, () => this.create(overrides));
  }

  /**
   * Create with specific trait
   */
  createWithTrait(trait: string, overrides?: Partial<T>): T {
    const traitOverrides = this.getTraitOverrides(trait);
    return this.create({ ...traitOverrides, ...overrides });
  }

  /**
   * Get trait-specific overrides
   */
  protected getTraitOverrides(trait: string): Partial<T> {
    return {};
  }
}

/**
 * User fixture factory
 */
export class UserFixtureFactory extends FixtureFactory<User> {
  create(overrides?: Partial<User>): User {
    return {
      id: faker.string.uuid(),
      email: faker.internet.email(),
      name: faker.person.fullName(),
      age: faker.number.int({ min: 18, max: 80 }),
      role: 'user',
      isActive: true,
      createdAt: faker.date.past(),
      ...overrides,
    };
  }

  protected getTraitOverrides(trait: string): Partial<User> {
    switch (trait) {
      case 'admin':
        return { role: 'admin' };
      case 'inactive':
        return { isActive: false };
      case 'new':
        return { createdAt: faker.date.recent() };
      default:
        return {};
    }
  }
}

// Usage in tests
describe('User Service', () => {
  const userFactory = new UserFixtureFactory();

  it('should create a user', () => {
    const user = userFactory.create();
    expect(user).toHaveProperty('id');
    expect(user).toHaveProperty('email');
  });

  it('should create an admin user', () => {
    const admin = userFactory.createWithTrait('admin');
    expect(admin.role).toBe('admin');
  });

  it('should create multiple users', () => {
    const users = userFactory.createMany(5);
    expect(users).toHaveLength(5);
  });
});

// Database seed data generation
import { PrismaClient } from '@prisma/client';
import { faker } from '@faker-js/faker';

const prisma = new PrismaClient();

/**
 * Seed database with mock data
 */
async function seedDatabase() {
  console.log('Seeding database...');

  // Clear existing data
  await prisma.post.deleteMany();
  await prisma.user.deleteMany();

  // Create users
  const users = await Promise.all(
    Array.from({ length: 10 }, async () => {
      return prisma.user.create({
        data: {
          email: faker.internet.email(),
          name: faker.person.fullName(),
          role: faker.helpers.arrayElement(['admin', 'user', 'guest']),
        },
      });
    })
  );

  console.log(`Created ${users.length} users`);

  // Create posts
  const posts = await Promise.all(
    users.flatMap((user) =>
      Array.from({ length: 3 }, async () => {
        return prisma.post.create({
          data: {
            title: faker.lorem.sentence(),
            content: faker.lorem.paragraphs(3),
            authorId: user.id,
            published: faker.datatype.boolean(),
          },
        });
      })
    )
  );

  console.log(`Created ${posts.length} posts`);
  console.log('Seeding complete!');
}

seedDatabase()
  .catch((error) => {
    console.error('Seeding failed:', error);
    process.exit(1);
  })
  .finally(async () => {
    await prisma.$disconnect();
  });