const mongoose = require('mongoose');
const bcrypt = require('bcrypt');

const userSchema = new mongoose.Schema({
    username: {
        type: String,
        required: true,
        unique: true,
        trim: true
    },
    password: {
        type: String,
        required: true
    },
    role: {
        type: String,
        enum: ['Chủ sở hữu', 'Thành viên'],
        default: 'Thành viên'
    }
}, {
    timestamps: true
});

// Hash password before saving
userSchema.pre('save', async function (next) {
    if (!this.isModified('password')) {
        return next();
    }
    try {
        const salt = await bcrypt.genSalt(10);
        this.password = await bcrypt.hash(this.password, salt);
        next();
    } catch (error) {
        next(error);
    }
});

// Compare password method
userSchema.methods.comparePassword = async function (candidatePassword) {
    return await bcrypt.compare(candidatePassword, this.password);
};

module.exports = mongoose.model('User', userSchema);