/**
 * App 端：通知运行时权限（Android 13+）、iOS 本地通知授权、本地推送点击跳转会话
 */
// #ifdef APP-PLUS
import { getToken } from './api'

let pushClickRegistered = false
let iosAuthAsked = false

function parsePushPayload(msg) {
	if (!msg) return null
	let payload = msg.payload
	if (payload == null && msg.Payload != null) payload = msg.Payload
	if (typeof payload === 'string') {
		try {
			payload = JSON.parse(payload)
		} catch (e) {
			return null
		}
	}
	if (payload && typeof payload === 'object') {
		const cid = payload.contactId != null ? payload.contactId : payload.otherUserId
		if (cid != null && cid !== '') return String(cid)
	}
	return null
}

function navigateToChatByContactId(contactId) {
	const url =
		'/pages/chat/index?otherUserId=' + encodeURIComponent(String(contactId))
	uni.navigateTo({
		url,
		fail: () => {
			uni.reLaunch({ url })
		}
	})
}

function ensureAndroidPostNotifications() {
	try {
		const Build = plus.android.importClass('android.os.Build')
		if (Build.VERSION.SDK_INT < 33) return
		const main = plus.android.runtimeMainActivity()
		const PackageManager = plus.android.importClass('android.content.pm.PackageManager')
		if (
			main.checkSelfPermission('android.permission.POST_NOTIFICATIONS') ===
			PackageManager.PERMISSION_GRANTED
		) {
			return
		}
		plus.android.requestPermissions(
			['android.permission.POST_NOTIFICATIONS'],
			() => {},
			(e) => console.warn('[notification] Android POST_NOTIFICATIONS', e && e.message)
		)
	} catch (e) {
		console.warn('[notification] Android permission', e)
	}
}

function ensureIOSNotificationAuth() {
	if (iosAuthAsked) return
	iosAuthAsked = true
	try {
		const UNUserNotificationCenter = plus.ios.importClass('UNUserNotificationCenter')
		const center = UNUserNotificationCenter.currentNotificationCenter()
		const opts = 7
		center.requestAuthorizationWithOptionsCompletionHandler(opts, function (granted, err) {
			if (err) console.warn('[notification] iOS authorization', err)
		})
	} catch (e) {
		console.warn('[notification] iOS permission', e)
		iosAuthAsked = false
	}
}

function registerPushClick() {
	if (pushClickRegistered) return
	if (!plus.push || typeof plus.push.addEventListener !== 'function') return
	pushClickRegistered = true
	plus.push.addEventListener('click', (msg) => {
		if (!getToken()) return
		const contactId = parsePushPayload(msg)
		if (!contactId) return
		navigateToChatByContactId(contactId)
	})
}

/**
 * 在已登录场景调用：申请权限 + 注册点击（幂等）
 */
export function setupAppNotifications() {
	try {
		if (typeof plus === 'undefined' || !plus.push) return
		if (plus.os.name === 'Android') ensureAndroidPostNotifications()
		else if (plus.os.name === 'iOS') ensureIOSNotificationAuth()
		registerPushClick()
	} catch (e) {
		console.warn('[notification] setup', e)
	}
}
// #endif

// #ifndef APP-PLUS
export function setupAppNotifications() {}
// #endif