import mongoose from 'mongoose';

const todoSchema = new mongoose.Schema({
  title: {
    type: String,
    required: true,
    trim: true,
    maxlength: 200
  },
  description: {
    type: String,
    trim: true,
    maxlength: 1000
  },
  completed: {
    type: Boolean,
    default: false
  },
  priority: {
    type: String,
    enum: ['low', 'medium', 'high'],
    default: 'medium'
  },
  dueDate: {
    type: Date,
    required: true
  },
  userId: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User',
    required: true
  },
  assignedBy: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User',
    required: false
  },
  status: {
    type: String,
    enum: ['pending', 'in-progress', 'submitted', 'completed'],
    default: 'pending'
  },
  submittedAt: {
    type: Date,
    required: false
  },
  completedAt: {
    type: Date,
    required: false
  }
}, {
  timestamps: true
});

export default mongoose.model('Todo', todoSchema);