<script setup>
import { ref, computed, nextTick } from 'vue'
import { showToast } from 'vant'
import ClickCaptcha from '@/components/ClickCaptcha.vue'
import { useDialogStore } from '@/stores/dialogStore'
import { useUserStore } from '@/stores/userStore'

const emit = defineEmits(['login-success'])
const dialogStore = useDialogStore()
const userStore = useUserStore()

const phoneNumber = ref('')
const verificationCode = ref('')
const password = ref('')
const isPasswordLogin = ref(false)
const isAgreed = ref(false)
const isCountingDown = ref(false)
const countdown = ref(60)
let timer = null

// 验证组件状态
const showCaptcha = ref(false)
const captchaVerified = ref(false)

// 聚焦状态变量
const phoneFocused = ref(false)
const codeFocused = ref(false)
const passwordFocused = ref(false)

const isPhoneNumberValid = computed(() => {
    return /^1[3-9]\d{9}$/.test(phoneNumber.value)
})

const canLogin = computed(() => {
    if (!isPhoneNumberValid.value) return false
    if (isPasswordLogin.value) {
        return password.value.length >= 6
    } else {
        return verificationCode.value.length === 6
    }
})

async function sendVerificationCode() {
    if (isCountingDown.value || !isPhoneNumberValid.value) return
    if (!isPhoneNumberValid.value) {
        showToast({ message: "请输入有效的手机号" });
        return
    }
    const { data, error } = await useApiFetch('auth/sendSms')
        .post({ mobile: phoneNumber.value, actionType: 'login' })
        .json()

    if (data.value && !error.value) {
        if (data.value.code === 200) {
            showToast({ message: "获取成功" });
            startCountdown()
            // 聚焦到验证码输入框
            nextTick(() => {
                const verificationCodeInput = document.getElementById('verificationCode');
                if (verificationCodeInput) {
                    verificationCodeInput.focus();
                }
            });
        } else {
            showToast(data.value.msg)
        }
    }
}

function startCountdown() {
    isCountingDown.value = true
    countdown.value = 60
    timer = setInterval(() => {
        if (countdown.value > 0) {
            countdown.value--
        } else {
            clearInterval(timer)
            isCountingDown.value = false
        }
    }, 1000)
}

async function handleLogin() {
    if (!isPhoneNumberValid.value) {
        showToast({ message: "请输入有效的手机号" });
        return
    }
    if (isPasswordLogin.value) {
        if (password.value.length < 6) {
            showToast({ message: "密码长度不能小于6位" });
            return
        }
    } else {
        if (verificationCode.value.length !== 6) {
            showToast({ message: "请输入有效的验证码" });
            return
        }
    }
    if (!isAgreed.value) {
        showToast({ message: "请先同意用户协议" });
        return
    }
    // 显示验证组件
    showCaptcha.value = true
}

// 验证成功回调
function handleCaptchaSuccess() {
    captchaVerified.value = true
    showCaptcha.value = false
    // 执行实际的登录逻辑
    performLogin()
}

// 验证关闭回调
function handleCaptchaClose() {
    showCaptcha.value = false
}

// 执行实际的登录逻辑
async function performLogin() {
    const { data, error } = await useApiFetch('/user/mobileCodeLogin')
        .post({ mobile: phoneNumber.value, code: verificationCode.value })
        .json()

    if (data.value && !error.value) {
        if (data.value.code === 200) {
            localStorage.setItem('token', data.value.data.accessToken)
            localStorage.setItem('refreshAfter', data.value.data.refreshAfter)
            localStorage.setItem('accessExpire', data.value.data.accessExpire)
            
            // 更新用户信息
            await userStore.fetchUserInfo()
            
            showToast({ message: "登录成功" });
            closeDialog();
            emit('login-success');
        } else {
            showToast(data.value.msg);
        }
    }
}

function closeDialog() {
    dialogStore.closeLogin();
    // 重置表单
    phoneNumber.value = '';
    verificationCode.value = '';
    password.value = '';
    isPasswordLogin.value = false;
    isAgreed.value = false;
    isCountingDown.value = false;
    countdown.value = 60;
    if (timer) {
        clearInterval(timer);
    }
}

function toUserAgreement() {
    closeDialog();
    router.push(`/userAgreement`);
}

function toPrivacyPolicy() {
    closeDialog();
    router.push(`/privacyPolicy`);
}
</script>

<template>
    <van-popup v-model:show="dialogStore.showLogin" round position="bottom" @close="closeDialog"
        :style="{ maxHeight: '90vh' }">
        <div class="login-dialog">
            <div class="title-bar">
                <div class="text-base sm:text-lg font-bold">登录</div>
                <van-icon name="cross" class="close-icon" @click="closeDialog" />
            </div>
            <div class="px-8">
                <div class="mb-8 pt-8 text-left">
                    <div class="flex flex-col items-center">
                        <img class="h-16 w-16 rounded-full shadow" src="/logo.jpg" alt="Logo" />
                        <div class="text-3xl mt-4 text-slate-700 font-bold">
                            天远数据
                        </div>
                    </div>
                </div>

                <div class="space-y-5">
                    <!-- 手机号输入 -->
                    <div :class="[
                        'input-container bg-blue-300/20',
                        phoneFocused ? 'focused' : '',
                    ]">
                        <input v-model="phoneNumber" class="input-field" type="tel" placeholder="请输入手机号"
                            maxlength="11" @focus="phoneFocused = true" @blur="phoneFocused = false" />
                    </div>

                    <!-- 验证码输入 -->
                    <div v-if="!isPasswordLogin" class="flex items-center justify-between">
                        <div :class="[
                            'input-container bg-blue-300/20',
                            codeFocused ? 'focused' : '',
                        ]">
                            <input v-model="verificationCode" id="verificationCode" class="input-field"
                                placeholder="请输入验证码" maxlength="6" @focus="codeFocused = true"
                                @blur="codeFocused = false" />
                        </div>
                        <button
                            class="ml-2 px-4 py-2 text-sm font-bold flex-shrink-0 rounded-lg transition duration-300"
                            :class="isCountingDown || !isPhoneNumberValid
                                ? 'cursor-not-allowed bg-gray-300 text-gray-500'
                                : 'bg-blue-500 text-white hover:bg-blue-600'
                                " @click="sendVerificationCode">
                            {{
                                isCountingDown
                                    ? `${countdown}s重新获取`
                                    : "获取验证码"
                            }}
                        </button>
                    </div>

                    <!-- 密码输入 -->
                    <div v-else :class="[
                        'input-container bg-blue-300/20',
                        passwordFocused ? 'focused' : '',
                    ]">
                        <input v-model="password" class="input-field" type="password" placeholder="请输入密码"
                            @focus="passwordFocused = true" @blur="passwordFocused = false" />
                    </div>

                    <!-- 登录方式切换 -->
                    <div class="flex justify-end items-center">
                        <div class="text-sm text-blue-500 cursor-pointer" @click="isPasswordLogin = !isPasswordLogin">
                            {{ isPasswordLogin ? '验证码登录' : '密码登录' }}
                        </div>
                    </div>

                    <!-- 协议同意框 -->
                    <div class="flex items-start space-x-2">
                        <input type="checkbox" v-model="isAgreed" class="mt-1" />
                        <span class="text-xs text-gray-400 leading-tight">
                            登录即代表您已阅读并同意
                            <a class="cursor-pointer text-blue-400" @click="toUserAgreement">
                                《用户协议》
                            </a>
                            和
                            <a class="cursor-pointer text-blue-400" @click="toPrivacyPolicy">
                                《隐私政策》
                            </a>
                        </span>
                    </div>
                </div>

                <button
                    class="mt-10 w-full py-3 text-lg font-bold text-white bg-blue-500 rounded-full transition duration-300"
                    :class="{ 'opacity-50 cursor-not-allowed': !canLogin }" @click="handleLogin">
                    登 录
                </button>
            </div>
        </div>
    </van-popup>

    <!-- 点击验证组件 -->
    <ClickCaptcha :visible="showCaptcha" @success="handleCaptchaSuccess" @close="handleCaptchaClose" />
</template>

<style scoped>
.login-dialog {
    background: url("@/assets/images/login_bg.png") no-repeat;
    background-position: center;
    background-size: cover;
    height: 100%;
}

.title-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid #eee;
}

.close-icon {
    font-size: 20px;
    color: #666;
    cursor: pointer;
}

.input-container {
    border: 2px solid rgba(125, 211, 252, 0);
    border-radius: 0.5rem;
    background-color: #f5f5f5;
    transition: all 0.3s;
    height: 3rem;
    display: flex;
    align-items: center;
}

.input-container.focused {
    border: 2px solid rgba(59, 130, 246, 0.5);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input-field {
    background-color: transparent;
    border: none;
    outline: none;
    width: 100%;
    padding: 0 1rem;
    color: #333;
    font-size: 1rem;
}

.input-field::placeholder {
    color: #999;
}

.agreement-checkbox {
    accent-color: #3b82f6;
}
</style>
