implement OPML import/export

4 months ago · dd0921e3e7
2 changed files with 235 additions and 2 deletions
--- a/src/lib/opml.ts
+++ b/src/lib/opml.ts
@ -0,0 +1,130 @@
				@@ -0,0 +1,130 @@
+/**
+ * OPML (Outline Processor Markup Language) utilities for RSS feed import/export
+ */
+
+export interface OpmlFeed {
+  title?: string
+  xmlUrl: string
+  htmlUrl?: string
+  text?: string
+}
+
+/**
+ * Parse an OPML file and extract RSS feed URLs
+ */
+export function parseOpml(opmlText: string): OpmlFeed[] {
+  const feeds: OpmlFeed[] = []
+  
+  try {
+    const parser = new DOMParser()
+    const doc = parser.parseFromString(opmlText, 'text/xml')
+    
+    // Check for parsing errors
+    const parserError = doc.querySelector('parsererror')
+    if (parserError) {
+      throw new Error('Invalid OPML file format')
+    }
+    
+    // Find all outline elements with xmlUrl (RSS feeds)
+    const outlines = doc.querySelectorAll('outline[xmlUrl]')
+    
+    outlines.forEach((outline) => {
+      const xmlUrl = outline.getAttribute('xmlUrl')
+      const htmlUrl = outline.getAttribute('htmlUrl')
+      const title = outline.getAttribute('title')
+      const text = outline.getAttribute('text')
+      
+      if (xmlUrl) {
+        feeds.push({
+          xmlUrl,
+          htmlUrl: htmlUrl || undefined,
+          title: title || undefined,
+          text: text || undefined
+        })
+      }
+    })
+    
+    // Also check for nested outlines (some OPML files nest feeds)
+    const allOutlines = doc.querySelectorAll('outline')
+    allOutlines.forEach((outline) => {
+      const xmlUrl = outline.getAttribute('xmlUrl')
+      if (xmlUrl && !feeds.some(f => f.xmlUrl === xmlUrl)) {
+        const htmlUrl = outline.getAttribute('htmlUrl')
+        const title = outline.getAttribute('title')
+        const text = outline.getAttribute('text')
+        
+        feeds.push({
+          xmlUrl,
+          htmlUrl: htmlUrl || undefined,
+          title: title || undefined,
+          text: text || undefined
+        })
+      }
+    })
+    
+    return feeds
+  } catch (error) {
+    throw new Error(`Failed to parse OPML file: ${error instanceof Error ? error.message : String(error)}`)
+  }
+}
+
+/**
+ * Generate an OPML file from a list of feed URLs
+ */
+export function generateOpml(feedUrls: string[], title: string = 'RSS Feeds'): string {
+  const now = new Date()
+  const dateString = now.toUTCString()
+  
+  let opml = `<?xml version="1.0" encoding="UTF-8"?>
+<opml version="2.0">
+  <head>
+    <title>${escapeXml(title)}</title>
+    <dateCreated>${dateString}</dateCreated>
+    <dateModified>${dateString}</dateModified>
+  </head>
+  <body>
+`
+  
+  feedUrls.forEach((url) => {
+    try {
+      const urlObj = new URL(url)
+      const feedTitle = urlObj.hostname.replace(/^www\./, '')
+      opml += `    <outline type="rss" text="${escapeXml(feedTitle)}" title="${escapeXml(feedTitle)}" xmlUrl="${escapeXml(url)}" htmlUrl="${escapeXml(url)}"/>\n`
+    } catch {
+      // Invalid URL, skip it
+    }
+  })
+  
+  opml += `  </body>
+</opml>`
+  
+  return opml
+}
+
+/**
+ * Escape XML special characters
+ */
+function escapeXml(text: string): string {
+  return text
+    .replace(/&/g, '&amp;')
+    .replace(/</g, '&lt;')
+    .replace(/>/g, '&gt;')
+    .replace(/"/g, '&quot;')
+    .replace(/'/g, '&apos;')
+}
+
+/**
+ * Download a file with the given content and filename
+ */
+export function downloadFile(content: string, filename: string, mimeType: string = 'application/xml') {
+  const blob = new Blob([content], { type: mimeType })
+  const url = URL.createObjectURL(blob)
+  const link = document.createElement('a')
+  link.href = url
+  link.download = filename
+  document.body.appendChild(link)
+  link.click()
+  document.body.removeChild(link)
+  URL.revokeObjectURL(url)
+}
+
--- a/src/pages/secondary/RssFeedSettingsPage/index.tsx
+++ b/src/pages/secondary/RssFeedSettingsPage/index.tsx
@ -9,11 +9,13 @@ import { Switch } from '@/components/ui/switch'
				@@ -9,11 +9,13 @@ import { Switch } from '@/components/ui/switch'
 import storage from '@/services/local-storage.service'
 import { createRssFeedListDraftEvent } from '@/lib/draft-event'
 import { showPublishingFeedback, showSimplePublishSuccess, showPublishingError } from '@/lib/publishing-feedback'
-import { CloudUpload, Loader, Trash2, Plus } from 'lucide-react'
+import { CloudUpload, Loader, Trash2, Plus, Download, Upload } from 'lucide-react'
 import logger from '@/lib/logger'
 import { ExtendedKind } from '@/constants'
 import indexedDb from '@/services/indexed-db.service'
 import rssFeedService from '@/services/rss-feed.service'
+import { parseOpml, generateOpml, downloadFile } from '@/lib/opml'
+import { toast } from 'sonner'

 const RssFeedSettingsPage = forwardRef(({ index, hideTitlebar = false }: { index?: number; hideTitlebar?: boolean }, ref) => {
  const { t } = useTranslation()
@ -107,6 +109,74 @@ const RssFeedSettingsPage = forwardRef(({ index, hideTitlebar = false }: { index
				@@ -107,6 +109,74 @@ const RssFeedSettingsPage = forwardRef(({ index, hideTitlebar = false }: { index
    setHasChange(true)
  }

+  const handleImportOpml = async (event: React.ChangeEvent<HTMLInputElement>) => {
+    const file = event.target.files?.[0]
+    if (!file) return
+
+    // Reset input
+    event.target.value = ''
+
+    try {
+      const text = await file.text()
+      const feeds = parseOpml(text)
+      
+      if (feeds.length === 0) {
+        toast.error(t('No RSS feeds found in OPML file'))
+        return
+      }
+
+      // Extract URLs from OPML feeds
+      const urls = feeds.map(feed => feed.xmlUrl).filter((url): url is string => {
+        try {
+          new URL(url)
+          return true
+        } catch {
+          return false
+        }
+      })
+
+      if (urls.length === 0) {
+        toast.error(t('No valid RSS feed URLs found in OPML file'))
+        return
+      }
+
+      // Merge with existing feeds (avoid duplicates)
+      const existingUrls = new Set(feedUrls)
+      const newUrls = urls.filter(url => !existingUrls.has(url))
+      
+      if (newUrls.length === 0) {
+        toast.info(t('All feeds from OPML file are already added'))
+        return
+      }
+
+      setFeedUrls([...feedUrls, ...newUrls])
+      setHasChange(true)
+      toast.success(t('Imported {{count}} feed(s) from OPML file', { count: newUrls.length }))
+    } catch (error) {
+      logger.error('[RssFeedSettingsPage] Failed to import OPML file', { error })
+      toast.error(t('Failed to import OPML file: {{error}}', { 
+        error: error instanceof Error ? error.message : String(error) 
+      }))
+    }
+  }
+
+  const handleExportOpml = () => {
+    if (feedUrls.length === 0) {
+      toast.error(t('No feeds to export'))
+      return
+    }
+
+    try {
+      const opmlContent = generateOpml(feedUrls, 'Jumble RSS Feeds')
+      const filename = `jumble-rss-feeds-${new Date().toISOString().split('T')[0]}.opml`
+      downloadFile(opmlContent, filename, 'application/xml')
+      toast.success(t('RSS feeds exported to OPML file'))
+    } catch (error) {
+      logger.error('[RssFeedSettingsPage] Failed to export OPML file', { error })
+      toast.error(t('Failed to export OPML file'))
+    }
+  }
+
  const handleSave = async () => {
    if (!pubkey) {
      logger.error('[RssFeedSettingsPage] Cannot save: no pubkey')
@ -368,7 +438,40 @@ const RssFeedSettingsPage = forwardRef(({ index, hideTitlebar = false }: { index
				@@ -368,7 +438,40 @@ const RssFeedSettingsPage = forwardRef(({ index, hideTitlebar = false }: { index
        {/* RSS Feed List */}
        <div className="space-y-4">
          <div className="space-y-2">
-            <Label>{t('RSS Feeds')}</Label>
+            <div className="flex items-center justify-between">
+              <Label>{t('RSS Feeds')}</Label>
+              <div className="flex gap-2">
+                <Button
+                  variant="outline"
+                  size="sm"
+                  onClick={handleExportOpml}
+                  disabled={feedUrls.length === 0}
+                  className="text-xs"
+                >
+                  <Download className="h-3 w-3 mr-1" />
+                  {t('Export OPML')}
+                </Button>
+                <label>
+                  <Button
+                    variant="outline"
+                    size="sm"
+                    asChild
+                    className="text-xs cursor-pointer"
+                  >
+                    <span>
+                      <Upload className="h-3 w-3 mr-1" />
+                      {t('Import OPML')}
+                    </span>
+                  </Button>
+                  <input
+                    type="file"
+                    accept=".opml,application/xml,text/xml"
+                    onChange={handleImportOpml}
+                    className="hidden"
+                  />
+                </label>
+              </div>
+            </div>
            <div className="text-muted-foreground text-xs">
              {t('Add RSS feed URLs to subscribe to. If no feeds are configured, the default feed will be used.')}
            </div>