import { getBaseUrl } from './config'

function isHttpUrl(url) {
	return /^https?:\/\//i.test(url)
}

function isPageUrl(url) {
	return typeof url === 'string' && url.startsWith('/pages/')
}

function isFileUrl(url) {
	return /\.(pdf|doc|docx|xls|xlsx|ppt|pptx)$/i.test(url || '')
}

function toWsUrl(baseUrl) {
	if (!baseUrl) return ''
	return baseUrl.replace(/^https?:\/\//i, (m) => (m.toLowerCase() === 'https://' ? 'wss://' : 'ws://'))
}

export function openLink(linkUrl, options = {}) {
	const url = (linkUrl || '').trim()
	if (!url) {
		uni.showToast({ title: '链接为空', icon: 'none' })
		return
	}

	if (isPageUrl(url)) {
		uni.navigateTo({ url })
		return
	}

	if (isHttpUrl(url)) {
		if (isFileUrl(url)) {
			uni.showLoading({ title: '正在打开...' })
			uni.downloadFile({
				url,
				success: (res) => {
					if (res.statusCode !== 200) {
						uni.hideLoading()
						uni.showToast({ title: '下载失败', icon: 'none' })
						return
					}
					uni.openDocument({
						filePath: res.tempFilePath,
						showMenu: true,
						success: () => {
							uni.hideLoading()
						},
						fail: () => {
							uni.hideLoading()
							uni.showToast({ title: '无法打开文件', icon: 'none' })
						}
					})
				},
				fail: () => {
					uni.hideLoading()
					uni.showToast({ title: '下载失败', icon: 'none' })
				}
			})
			return
		}

		const encoded = encodeURIComponent(url)
		const title = options.title ? encodeURIComponent(options.title) : ''
		const page = `/pages/webview/index?url=${encoded}${title ? `&title=${title}` : ''}`
		uni.navigateTo({ url: page })
		return
	}

	uni.showToast({ title: '不支持的链接格式', icon: 'none' })
}

export function getMessageWsUrl(token) {
	const baseUrl = getBaseUrl()
	const wsBase = toWsUrl(baseUrl)
	if (!wsBase) return ''
	const t = (token || '').trim()
	return `${wsBase}/ws/message${t ? `?token=${encodeURIComponent(t)}` : ''}`
}