From 357c4a382d868f84bb46ca7af69586de73069b98 Mon Sep 17 00:00:00 2001
From: Dick Choi <fluke8259@gmail.com>
Date: Mon, 29 Aug 2016 10:05:56 +0900
Subject: [PATCH] migrateFromV5Storage

---
 .../main/lib/dataApi/migrateFromV5Storage.js  | 110 ++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 browser/main/lib/dataApi/migrateFromV5Storage.js

diff --git a/browser/main/lib/dataApi/migrateFromV5Storage.js b/browser/main/lib/dataApi/migrateFromV5Storage.js
new file mode 100644
index 00000000..d13a5e28
--- /dev/null
+++ b/browser/main/lib/dataApi/migrateFromV5Storage.js
@@ -0,0 +1,110 @@
+const _ = require('lodash')
+const keygen = require('browser/lib/keygen')
+const resolveStorageData = require('./resolveStorageData')
+const consts = require('browser/lib/consts')
+const CSON = require('season')
+const path = require('path')
+const sander = require('sander')
+
+function migrateFromV5Storage (storageKey, data) {
+  let targetStorage
+  try {
+    let cachedStorageList = JSON.parse(localStorage.getItem('storages'))
+    if (!_.isArray(cachedStorageList)) throw new Error('Target storage doesn\'t exist.')
+
+    targetStorage = _.find(cachedStorageList, {key: storageKey})
+    if (targetStorage == null) throw new Error('Target storage doesn\'t exist.')
+  } catch (e) {
+    return Promise.reject(e)
+  }
+  return resolveStorageData(targetStorage)
+    .then(function (storage) {
+      return importAll(storage, data)
+    })
+}
+
+function importAll (storage, data) {
+  let oldArticles = data.articles
+  let notes = []
+  data.folders
+    .forEach(function (oldFolder) {
+      let folderKey = keygen()
+      while (storage.folders.some((folder) => folder.key === folderKey)) {
+        folderKey = keygen()
+      }
+      let newFolder = {
+        key: folderKey,
+        name: oldFolder.name,
+        color: consts.FOLDER_COLORS[Math.floor(Math.random() * 7) % 7]
+      }
+
+      storage.folders.push(newFolder)
+
+      let articles = oldArticles.filter((article) => article.FolderKey === oldFolder.key)
+      articles.forEach((article) => {
+        let noteKey = keygen()
+        let isUnique = false
+        while (!isUnique) {
+          try {
+            sander.statSync(path.join(storage.path, 'notes', noteKey + '.cson'))
+            noteKey = keygen()
+          } catch (err) {
+            if (err.code === 'ENOENT') {
+              isUnique = true
+            } else {
+              console.error('Failed to read `notes` directory.')
+              throw err
+            }
+          }
+        }
+
+        if (article.mode === 'markdown') {
+          let newNote = {
+            tags: article.tags,
+            createdAt: article.createdAt,
+            updatedAt: article.updatedAt,
+            folder: folderKey,
+            storage: storage.key,
+            type: 'MARKDOWN_NOTE',
+            isStarred: false,
+            title: article.title,
+            content: '# ' + article.title + '\n\n' + article.content,
+            key: noteKey
+          }
+          notes.push(newNote)
+        } else {
+          let newNote = {
+            tags: article.tags,
+            createdAt: article.createdAt,
+            updatedAt: article.updatedAt,
+            folder: folderKey,
+            storage: storage.key,
+            type: 'SNIPPET_NOTE',
+            isStarred: false,
+            title: article.title,
+            description: article.title,
+            key: noteKey,
+            snippets: [{
+              name: article.mode,
+              mode: article.mode,
+              content: article.content
+            }]
+          }
+          notes.push(newNote)
+        }
+      })
+    })
+
+  notes.forEach(function (note) {
+    CSON.writeFileSync(path.join(storage.path, 'notes', note.key + '.cson'), _.omit(note, ['storage', 'key']))
+  })
+
+  CSON.writeFileSync(path.join(storage.path, 'boostnote.json'), _.pick(storage, ['version', 'folders']))
+
+  return {
+    storage,
+    notes
+  }
+}
+
+module.exports = migrateFromV5Storage