csamsclient/app/src/main/java/com/gyf/csams/account/model/RegisterViewModel.kt

package com.gyf.csams.account.model

import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.ViewModel
import com.orhanobut.logger.Logger

/**
 * 注册表单
 */
class RegisterViewModel:ViewModel() {
    //学号
    private val  _studentId=MutableLiveData<String>()
    val studentId:LiveData<String> = _studentId
    private val _isValidStudentId=MutableLiveData<Boolean>()
    val isValidStudentId:LiveData<Boolean> = _isValidStudentId
    val studentIdDesc="学号"
    val studentIdPlaceholder="学号纯数字"
    val studentIdFormat="入学年份（四位）+班级代码（两位）+学生代码（两位）"
    //姓名
    private val _name=MutableLiveData<String>()
    val name:LiveData<String> = _name
    val nameDesc="姓名"
    val namePlaceholder=nameDesc
    private val _isValidName=MutableLiveData<Boolean>()
    val isValidName:LiveData<Boolean> = _isValidName
    val nameFormat="姓名不能为空"
    //注册按钮
    private val _isValidForm=MutableLiveData<Boolean>()
    val isValidForm:LiveData<Boolean> = _isValidForm

    /**
     * 更新学号
     *
     * @param studentId 学号
     */
    fun onStudentIdChange(studentId:String){
        _studentId.value=studentId
        _isValidForm.value =  checkStudentId() && _isValidForm.value ?: false

    }

    /**
     * 检查学号格式
     *
     */
    private fun checkStudentId(): Boolean {
        _isValidStudentId.value= _studentId.value?.matches(Regex("\\d{8}"))
        return _isValidStudentId.value==true
    }

    /**
     * 更新姓名
     *
     * @param name 姓名
     */
    fun onNameChange(name:String){
        _name.value=name
        _isValidForm.value =  checkName() && _isValidForm.value ?: false
    }

    private fun checkName():Boolean{
        _isValidName.value= _name.value?.isNotEmpty()
        return _isValidName.value==true
    }

    fun register(){
        if(_isValidForm.value==true){
            Logger.i("开始注册")
        }else{
            Logger.wtf("表单校验失败，无法注册！！！")
        }
    }
}