<template>
    <div class="login-wrap">
        <el-form :model="ruleForm" status-icon :rules="rules" ref="ruleForm" label-width="80px"
                 class="demo-ruleForm login-from">
            <h2>用戶(hù)登陸</h2>
            <el-form-item label="用戶(hù)名" prop="checkuser">
                <el-input type="text" v-model="ruleForm.username" auto-complete="off"></el-input>
            </el-form-item>

            <el-form-item label="密碼" prop="checkpass">
                <el-input type="password" v-model="ruleForm.password" auto-complete="off"></el-input>
            </el-form-item>

            <el-form-item>
                <el-button class="login-btn" type="primary" @click.peevent="login">登陸</el-button>
            </el-form-item>
        </el-form>
    </div>
</template>

<script>
    export default {
        data() {
            let validateUser = (rule, value, callback) => {
                if (value === '') {
                    callback(new Error('請(qǐng)輸入用戶(hù)名'));
                } else {
                    callback();
                }
            };
            let validatePass = (rule, value, callback) => {
                console.log(value);
                if (value === '') {
                    callback(new Error('請(qǐng)輸入密碼'));
                } else {
                    callback();
                }
            };
            return {
                ruleForm: {
                    username: 'admin',
                    password: '123456'
                },
                rules: {
                    checkuser: [
                        {validator: validateUser, trigger: 'blur'}
                    ],
                    checkpass: [
                        {validator: validatePass, trigger: 'blur'}
                    ]
                }
            };
        },
        methods: {
            open(message = '登陸成功', type = 'success') {
                this.$message({
                    message,
                    type,
                    center: true
                });
            },
            login() {
                this.$http.post('/login', this.ruleForm).then(res => {
                    let {meta, data} = res.data;
                    if (meta.status === 200) {
                        this.open();
                        window.sessionStorage.setItem('token', data.token);
                        this.$router.push('/home/index');
                    } else {
                        this.open(meta.msg, 'error');
                    }
                });
            }
        }
    }
</script>

<style scoped>
    .login-wrap {
        background-color: #324152;
        height: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .login-wrap .login-from {
        background-color: #fff;
        width: 400px;
        padding: 30px;
        border-radius: 5px;
    }

    .login-wrap .login-from .login-btn {
        width: 100%;
    }
</style>