SnapFit: Building a Global Corporate Fitness Platform for Snapchat Employees

API Endpoints Created:

Authentication:
POST   /api/auth/register
POST   /api/auth/login
POST   /api/auth/sso/snapchat
POST   /api/auth/refresh
POST   /api/auth/logout

Users:
GET    /api/users/me
PUT    /api/users/me
GET    /api/users/search
GET    /api/users/:id

Workouts:
GET    /api/workouts
GET    /api/workouts/:id
POST   /api/workouts/complete
GET    /api/workouts/recommended
GET    /api/workouts/history

Live Classes:
GET    /api/live/schedule
GET    /api/live/current
POST   /api/live/join
POST   /api/live/leave

Challenges:
GET    /api/challenges
GET    /api/challenges/:id
POST   /api/challenges/enroll
GET    /api/challenges/leaderboard
POST   /api/challenges/progress

Messages:
GET    /api/messages/instructors
GET    /api/messages/employees
POST   /api/messages/send
GET    /api/messages/conversation/:id

Admin:
POST   /api/admin/workouts
POST   /api/admin/challenges
GET    /api/admin/analytics
GET    /api/admin/users

Data Schema Design (MongoDB):

// User Schema
const UserSchema = new Schema({
  email: { type: String, required: true, unique: true },
  name: String,
  department: String,
  office: String, // LA, NYC, London, Tokyo, etc.
  role: { type: String, enum: ['employee', 'instructor', 'admin'] },
  profile: {
    fitnessLevel: String,
    interests: [String],
    goals: [String]
  },
  stats: {
    totalWorkouts: Number,
    currentStreak: Number,
    longestStreak: Number,
    favoriteInstructor: ObjectId
  },
  snapchatAuth: {
    snapId: String,
    verified: Boolean
  },
  createdAt: Date,
  lastActive: Date
});

// Workout Schema
const WorkoutSchema = new Schema({
  title: String,
  description: String,
  instructor: { type: ObjectId, ref: 'User' },
  type: String, // Strength, HIIT, Yoga, Cardio
  difficulty: String,
  duration: Number, // minutes
  videoUrl: String,
  thumbnailUrl: String,
  caloriesBurned: Number,
  isLive: Boolean,
  liveDate: Date,
  ratings: [{ user: ObjectId, rating: Number }]
});

// Challenge Schema
const ChallengeSchema = new Schema({
  title: String,
  type: String, // participation, competition, team
  metric: String, // workouts, steps, specific_exercise
  startDate: Date,
  endDate: Date,
  prize: String,
  participants: [ObjectId],
  leaderboard: [{ user: ObjectId, score: Number, rank: Number }]
});