import {
    POLICY_CONSENT_VERSION,
    STORAGE_KEY_POLICY_CONSENT,
} from '@/utils/policy-config.js'
import { eventBus } from '@/utils/event-bus'

let policyHostVm = null
let privacyResolve = null
let lastTabbarBlocked = false
let pendingHomeRefreshAfterPolicy = false

/** 用户刚同意协议，首页需在登录后补拉数据 */
export function markHomeRefreshAfterPolicy() {
    pendingHomeRefreshAfterPolicy = true
}

export function consumeHomeRefreshAfterPolicy() {
    const need = pendingHomeRefreshAfterPolicy
    pendingHomeRefreshAfterPolicy = false
    return need
}

function hideNativeTabBar() {
    uni.hideTabBar({
        animation: false,
        fail: () => {},
    })
}

function showNativeTabBar() {
    uni.showTabBar({
        animation: false,
        fail: () => {},
    })
}

/**
 * 协议/隐私弹窗期间隐藏原生 tabBar（小程序内 cover-view 无法可靠拦截 tabBar 点击）
 */
export function setTabbarBlockedState(blocked) {
    const next = !!blocked
    lastTabbarBlocked = next
    if (next) {
        hideNativeTabBar()
    } else {
        showNativeTabBar()
    }
    eventBus.emit('tabbarBlockChange', next)
}

/** Tab 切换回显时重新应用 tabBar 显隐 */
export function syncTabbarBlockedState() {
    if (lastTabbarBlocked) {
        hideNativeTabBar()
    } else {
        showNativeTabBar()
    }
}

export function getTabbarBlockedState() {
    return lastTabbarBlocked
}

export function isPolicyConsented() {
    return uni.getStorageSync(STORAGE_KEY_POLICY_CONSENT) === POLICY_CONSENT_VERSION
}

/** 未同意业务协议前，禁止展示分享减价/加价等活动弹窗 */
export function shouldBlockMarketingPopup() {
    const app = getApp()
    if (app && app.globalData && app.globalData.needPolicyConsent) {
        return true
    }
    return !isPolicyConsented()
}

export function setPolicyConsented() {
    uni.setStorageSync(STORAGE_KEY_POLICY_CONSENT, POLICY_CONSENT_VERSION)
}

export function registerPolicyHost(vm) {
    policyHostVm = vm
    const app = getApp()
    if (app && app.globalData && app.globalData.needPolicyConsent) {
        vm.tryOpenPolicyModal()
    }
    if (app && app.globalData && app.globalData.needPrivacyPopup) {
        vm.tryOpenPrivacyPopup()
    }
}

export function unregisterPolicyHost(vm) {
    if (policyHostVm === vm) {
        policyHostVm = null
    }
}

export function requestShowPolicyModal() {
    const app = getApp()
    if (app && app.globalData) {
        app.globalData.needPolicyConsent = true
    }
    if (policyHostVm) {
        policyHostVm.tryOpenPolicyModal()
    }
}

export function requestShowPrivacyPopup(resolve) {
    privacyResolve = resolve
    const app = getApp()
    if (app && app.globalData) {
        app.globalData.needPrivacyPopup = true
    }
    if (policyHostVm) {
        policyHostVm.tryOpenPrivacyPopup()
    }
}

export function getPrivacyResolve() {
    return privacyResolve
}

export function clearPrivacyResolve() {
    privacyResolve = null
}

export function clearPrivacyPopupFlag() {
    const app = getApp()
    if (app && app.globalData) {
        app.globalData.needPrivacyPopup = false
    }
}