<template>
    <el-form ref="loginFormRef" :model="loginForm" :rules="loginRules" size="large">
        <el-form-item prop="username">
            <el-input v-model="loginForm.username" placeholder="用户名">
                <template #prefix>
                    <el-icon class="el-input__icon">
                        <user />
                    </el-icon>
                </template>
            </el-input>
        </el-form-item>
        <el-form-item prop="password">
            <el-input
                v-model="loginForm.password"
                type="password"
                placeholder="密码"
                show-password
                autocomplete="new-password"
            >
                <template #prefix>
                    <el-icon class="el-input__icon">
                        <lock />
                    </el-icon>
                </template>
            </el-input>
        </el-form-item>
        <el-form-item prop="checked" v-show="false">
            <el-checkbox v-model="loginForm.checked">记住我</el-checkbox>
        </el-form-item>
    </el-form>
    <div class="login-btn">
        <el-button :icon="UserFilled" round size="large" type="primary" :loading="loading" @click="login(loginFormRef)">
            登录
        </el-button>
        <el-button :icon="CircleClose" round size="large" @click="resetForm(loginFormRef)">重置</el-button>
    </div>
</template>

<script setup lang="ts">
import { useRouter } from 'vue-router'
import { HOME_URL } from '@/config'
import { getTimeState } from '@/utils'
import { type Dict } from '@/api/interface'
import { type Login } from '@/api/user/interface/user'
import type { ElForm } from 'element-plus'
import { ElNotification } from 'element-plus'
import { getDictList, getPublicKey, loginApi } from '@/api/user/login'
import { useUserStore } from '@/stores/modules/user'
import { useTabsStore } from '@/stores/modules/tabs'
import { useKeepAliveStore } from '@/stores/modules/keepAlive'
import { initDynamicRouter } from '@/routers/modules/dynamicRouter'
import { CircleClose, UserFilled } from '@element-plus/icons-vue'
import { useAuthStore } from '@/stores/modules/auth'
import { useDictStore } from '@/stores/modules/dict'
import forge from 'node-forge'

const authStore = useAuthStore()
const router = useRouter()
const userStore = useUserStore()
const tabsStore = useTabsStore()
const keepAliveStore = useKeepAliveStore()

const dictStore = useDictStore()
let publicKey: any = null

type FormInstance = InstanceType<typeof ElForm>
const loginFormRef = ref<FormInstance>()
const loginRules = reactive({
    username: [{ required: true, message: '请输入用户名', trigger: 'blur' }],
    password: [{ required: true, message: '请输入密码', trigger: 'blur' }]
})

const loading = ref(false)
const loginForm = reactive<Login.ReqLoginForm>({
    username: '',
    password: '',
    checked: false
})

// login
const login = (formEl: FormInstance | undefined) => {
    if (!formEl) return
    formEl.validate(async valid => {
        if (!valid) return
        loading.value = true
        try {
            let { data: publicKeyBase64 }: { data: string } = await getPublicKey(loginForm.username)
            //将base64格式的公钥转换为Forge可以使用的格式
            const publicKeyDer = forge.util.decode64(publicKeyBase64)
            publicKey = forge.pki.publicKeyFromPem(
                forge.pki.publicKeyToPem(forge.pki.publicKeyFromAsn1(forge.asn1.fromDer(publicKeyDer)))
            )

            // 1.执行登录接口
            const { data } = await loginApi({
                username: forge.util.encode64(loginForm.username),
                password: encryptPassword(loginForm.password)
            })
            ElNotification({
                title: getTimeState(),
                message: '登录成功',
                type: 'success',
                duration: 3000
            })
            userStore.setAccessToken(data.accessToken)
            userStore.setRefreshToken(data.refreshToken)
            userStore.setUserInfo(data.userInfo)
            if (loginForm.checked) {
                userStore.setExp(Date.now() + 1000 * 60 * 60 * 24 * 30)
            }
            // 设置激活信息
            await authStore.setActivateInfo()
            const response = await getDictList()
            const dictData = response.data as unknown as Dict[]
            await dictStore.initDictData(dictData)
            // 2.添加动态路由
            await initDynamicRouter()

            // 3.清空 tabs、keepAlive 数据
            await tabsStore.setTabs([])
            await keepAliveStore.setKeepAliveName([])
            // 登录默认不显示菜单和导航栏
            await authStore.setShowMenu()
            // 跳转到首页
            await router.push(HOME_URL)
        } finally {
            loading.value = false
        }
    })
}

// resetForm
const resetForm = (formEl: FormInstance | undefined) => {
    if (!formEl) return
    formEl.resetFields()
}

onMounted(() => {
    // 监听 enter 事件（调用登录）
    document.onkeydown = (e: KeyboardEvent) => {
        e = (window.event as KeyboardEvent) || e
        if (e.code === 'Enter' || e.code === 'enter' || e.code === 'NumpadEnter') {
            if (loading.value) return
            login(loginFormRef.value)
        }
    }
})

const encryptPassword = (password: string) => {
    const encrypted = publicKey.encrypt(password, 'RSAES-PKCS1-V1_5')
    // 将加密后的数据转换为base64格式以便传输
    return forge.util.encode64(encrypted)
}
</script>

<style scoped lang="scss">
@use '../index.scss';
</style>
