Copying the link to an attachment should make sure that it is located in the same note folder -> Fixes #1924

browser/main/lib/dataApi/attachmentManagement.js

@@ -6,6 +6,7 @@ const mdurl = require('mdurl')
 const fse = require('fs-extra')
 const escapeStringRegexp = require('escape-string-regexp')
 const sander = require('sander')
+import i18n from 'browser/lib/i18n'
 
 const STORAGE_FOLDER_PLACEHOLDER = ':storage'
 const DESTINATION_FOLDER = 'attachments'
@@ -258,7 +259,7 @@ function deleteAttachmentsNotPresentInNote (markdownContent, storageKey, noteKey
   if (fs.existsSync(attachmentFolder)) {
     fs.readdir(attachmentFolder, (err, files) => {
       if (err) {
-        console.error("Error reading directory '" + attachmentFolder + "'. Error:")
+        console.error('Error reading directory "' + attachmentFolder + '". Error:')
         console.error(err)
         return
       }
@@ -267,17 +268,17 @@ function deleteAttachmentsNotPresentInNote (markdownContent, storageKey, noteKey
           const absolutePathOfFile = path.join(targetStorage.path, DESTINATION_FOLDER, noteKey, file)
           fs.unlink(absolutePathOfFile, (err) => {
             if (err) {
-              console.error("Could not delete '%s'", absolutePathOfFile)
+              console.error('Could not delete "%s"', absolutePathOfFile)
               console.error(err)
               return
             }
-            console.info("File '" + absolutePathOfFile + "' deleted because it was not included in the content of the note")
+            console.info('File "' + absolutePathOfFile + '" deleted because it was not included in the content of the note')
           })
         }
       })
     })
   } else {
-    console.info("Attachment folder ('" + attachmentFolder + "') did not exist..")
+    console.info('Attachment folder ("' + attachmentFolder + '") did not exist..')
   }
 }
 
@@ -308,6 +309,71 @@ function cloneAttachments (oldNote, newNote) {
   }
 }
 
+function generateFileNotFoundMarkdown () {
+  return '**' + i18n.__('⚠ You have pasted a link referring an attachment that could not be found in the storage location of this note. Pasting links referring attachments is only supported if the source and destination location is the same storage. Please Drag&Drop the attachment instead! ⚠') + '**'
+}
+
+/**
+ * Determines whether a given text is a link to an boostnote attachment
+ * @param text Text that might contain a attachment link
+ * @return {Boolean} Result of the test
+ */
+function isAttachmentLink (text) {
+  if (text) {
+    return text.match(new RegExp('.*\\[.*\\]\\( *' + escapeStringRegexp(STORAGE_FOLDER_PLACEHOLDER) + escapeStringRegexp(path.sep) + '.*\\).*', 'gi')) != null
+  }
+  return false
+}
+
+/**
+ * @description Handles the paste of an attachment link. Copies the referenced attachment to the location belonging to the new note.
+ *  Returns a modified version of the pasted text so that it matches the copied attachment (resp. the new location)
+ * @param storageKey StorageKey of the current note
+ * @param noteKey NoteKey of the currentNote
+ * @param linkText Text that was pasted
+ * @return {Promise<String>} Promise returning the modified text
+ */
+function handleAttachmentLinkPaste (storageKey, noteKey, linkText) {
+  if (storageKey != null && noteKey != null && linkText != null) {
+    const storagePath = findStorage.findStorage(storageKey).path
+    const attachments = getAttachmentsInContent(linkText) || []
+    const replaceInstructions = []
+    const copies = []
+    for (const attachment of attachments) {
+      const absPathOfAttachment = attachment.replace(new RegExp(STORAGE_FOLDER_PLACEHOLDER, 'g'), path.join(storagePath, DESTINATION_FOLDER))
+      copies.push(
+        sander.exists(absPathOfAttachment)
+          .then((fileExists) => {
+            if (!fileExists) {
+              const fileNotFoundRegexp = new RegExp('!?' + escapeStringRegexp('[') + '[\\w|\\d|\\s|\\.]*\\]\\(\\s*' + STORAGE_FOLDER_PLACEHOLDER + '[\\w|\\d|\\-|' + escapeStringRegexp(path.sep) + ']*' + escapeStringRegexp(path.basename(absPathOfAttachment)) + escapeStringRegexp(')'))
+              replaceInstructions.push({regexp: fileNotFoundRegexp, replacement: this.generateFileNotFoundMarkdown()})
+              return Promise.resolve()
+            }
+            return this.copyAttachment(absPathOfAttachment, storageKey, noteKey)
+              .then((fileName) => {
+                const replaceLinkRegExp = new RegExp(escapeStringRegexp('(') + ' *' + STORAGE_FOLDER_PLACEHOLDER + '[\\w|\\d|\\-|' + escapeStringRegexp(path.sep) + ']*' + escapeStringRegexp(path.basename(absPathOfAttachment)) + ' *' + escapeStringRegexp(')'))
+                replaceInstructions.push({
+                  regexp: replaceLinkRegExp,
+                  replacement: '(' + path.join(STORAGE_FOLDER_PLACEHOLDER, noteKey, fileName) + ')'
+                })
+                return Promise.resolve()
+              })
+          })
+      )
+    }
+    return Promise.all(copies).then(() => {
+      let modifiedLinkText = linkText
+      for (const replaceInstruction of replaceInstructions) {
+        modifiedLinkText = modifiedLinkText.replace(replaceInstruction.regexp, replaceInstruction.replacement)
+      }
+      return modifiedLinkText
+    })
+  } else {
+    console.log('One if the parameters was null -> Do nothing..')
+    return Promise.resolve(linkText)
+  }
+}
+
 module.exports = {
   copyAttachment,
   fixLocalURLS,
@@ -321,6 +387,9 @@ module.exports = {
   deleteAttachmentsNotPresentInNote,
   moveAttachments,
   cloneAttachments,
+  isAttachmentLink,
+  handleAttachmentLinkPaste,
+  generateFileNotFoundMarkdown,
   STORAGE_FOLDER_PLACEHOLDER,
   DESTINATION_FOLDER
 }