moveNote

browser/main/lib/dataApi/moveNote.js

@@ -0,0 +1,92 @@
+const resolveStorageData = require('./resolveStorageData')
+const _ = require('lodash')
+const path = require('path')
+const CSON = require('season')
+const keygen = require('browser/lib/keygen')
+const sander = require('sander')
+
+function moveNote (storageKey, noteKey, newStorageKey, newFolderKey) {
+  let oldStorage, newStorage
+  try {
+    let cachedStorageList = JSON.parse(localStorage.getItem('storages'))
+    if (!_.isArray(cachedStorageList)) throw new Error('Storage doesn\'t exist.')
+
+    oldStorage = _.find(cachedStorageList, {key: storageKey})
+    if (oldStorage == null) throw new Error('Storage doesn\'t exist.')
+
+    newStorage = _.find(cachedStorageList, {key: newStorageKey})
+    if (newStorage == null) throw new Error('Target storage doesn\'t exist.')
+  } catch (e) {
+    return Promise.reject(e)
+  }
+
+  return resolveStorageData(oldStorage)
+    .then(function saveNote (_oldStorage) {
+      oldStorage = _oldStorage
+      let noteData
+      let notePath = path.join(oldStorage.path, 'notes', noteKey + '.cson')
+      try {
+        noteData = CSON.readFileSync(notePath)
+      } catch (err) {
+        console.warn('Failed to find note cson', err)
+        throw err
+      }
+      let newNoteKey
+      return Promise.resolve()
+        .then(function resolveNewStorage () {
+          if (storageKey === newStorageKey) {
+            newNoteKey = noteKey
+            return oldStorage
+          }
+          return resolveStorageData(newStorage)
+            .then(function findNewNoteKey (_newStorage) {
+              newStorage = _newStorage
+              newNoteKey = keygen()
+              let isUnique = false
+              while (!isUnique) {
+                try {
+                  sander.statSync(path.join(newStorage.path, 'notes', newNoteKey + '.cson'))
+                  newNoteKey = keygen()
+                } catch (err) {
+                  if (err.code === 'ENOENT') {
+                    isUnique = true
+                  } else {
+                    throw err
+                  }
+                }
+              }
+
+              return newStorage
+            })
+        })
+        .then(function checkFolderExistsAndPrepareNoteData (newStorage) {
+          if (_.find(newStorage.folders, {key: newFolderKey}) == null) throw new Error('Target folder doesn\'t exist.')
+
+          noteData.folder = newFolderKey
+          noteData.key = newNoteKey
+          noteData.storage = newStorageKey
+          return noteData
+        })
+        .then(function writeAndReturn (noteData) {
+          CSON.writeFileSync(path.join(newStorage.path, 'notes', noteData.key + '.cson'), _.omit(noteData, ['key', 'storage']))
+          return {
+            oldStorageKey: storageKey,
+            oldNoteKey: noteKey,
+            note: noteData
+          }
+        })
+        .then(function deleteOldNote (data) {
+          if (storageKey !== newStorageKey) {
+            try {
+              sander.unlinkSync(path.join(oldStorage.path, 'notes', noteKey + '.cson'))
+            } catch (err) {
+              console.warn(err)
+            }
+          }
+
+          return data
+        })
+    })
+}
+
+module.exports = moveNote