import mongoose from 'mongoose'
import bcrypt from 'bcrypt'

const UserSchema = new mongoose.Schema(
    {
        username: {
            type: String,
            required: true,
            unique: true,
            index: true,
        },
        nickname: {
            type: String,
        },
        password: {
            type: String,
            required: true,
        },
        role: {
            type: String,
            enum: ['admin', 'user'],
            default: 'user',
        },
    },
    { timestamps: true }
)

// 保存前自动对密码进行哈希加密
UserSchema.pre('save', async function () {
    this.password = await bcrypt.hash(this.password, 10)
})

// 实例方法：校验密码
UserSchema.methods.comparePassword = async function (candidatePassword) {
    return bcrypt.compare(candidatePassword, this.password)
}

// 输出时始终不返回密码
UserSchema.methods.toJSON = function () {
    const obj = this.toObject()
    delete obj.password
    return obj
}

const User = mongoose.model('User', UserSchema)

export default User