added delete snippet, update snippet, create snippet and save on snippet change

browser/main/lib/dataApi/createSnippet.js

@@ -0,0 +1,23 @@
+const { remote } = require('electron')
+import fs from 'fs'
+import path from 'path'
+import crypto from 'crypto'
+import consts from 'browser/lib/consts'
+
+function createSnippet(snippets) {
+  return new Promise((resolve, reject) => {
+    const newSnippet = { 
+      id: crypto.randomBytes(16).toString('hex'), 
+      name: 'Unnamed snippet',
+      prefix: [],
+      content: ''
+    }
+    snippets.push(newSnippet)
+    fs.writeFile(consts.SNIPPET_FILE, JSON.stringify(snippets, null, 4), (err) => {
+      if (err) reject(err)
+      resolve(snippets)
+    })
+  })
+}
+
+module.exports = createSnippet

browser/main/lib/dataApi/deleteSnippet.js

@@ -0,0 +1,20 @@
+const { remote } = require('electron')
+import fs from 'fs'
+import path from 'path'
+import consts from 'browser/lib/consts'
+
+function deleteSnippet (snippets, snippetId) {
+  return new Promise((resolve, reject) => {
+    for(let i = 0; i < snippets.length; i++) {
+      if (snippets[i].id === snippetId) {
+        snippets.splice(i, 1);
+        fs.writeFile(consts.SNIPPET_FILE, JSON.stringify(snippets, null, 4), (err) => {
+          if (err) reject(err)
+          resolve(snippets)
+        })
+      }
+    }
+  }) 
+}
+
+module.exports = deleteSnippet

browser/main/lib/dataApi/index.js

@@ -13,6 +13,9 @@ const dataApi = {
   deleteNote: require('./deleteNote'),
   moveNote: require('./moveNote'),
   migrateFromV5Storage: require('./migrateFromV5Storage'),
+  createSnippet: require('./createSnippet'),
+  deleteSnippet: require('./deleteSnippet'),
+  updateSnippet: require('./updateSnippet'),
 
   _migrateFromV6Storage: require('./migrateFromV6Storage'),
   _resolveStorageData: require('./resolveStorageData'),

browser/main/lib/dataApi/updateSnippet.js

@@ -0,0 +1,34 @@
+import fs from 'fs'
+import consts from 'browser/lib/consts'
+
+function updateSnippet (snippet) {
+  return new Promise((resolve, reject) => {
+    let snippets = JSON.parse(fs.readFileSync(consts.SNIPPET_FILE, 'utf-8'))
+
+    for (let i = 0; i < snippets.length; i++) {
+      let currentSnippet = snippets[i]
+
+      if (currentSnippet.id === snippet.id) {
+        if (
+          currentSnippet.name === snippet.name &&
+          currentSnippet.prefix === snippet.prefix &&
+          currentSnippet.content === snippet.content
+        ) {
+          // if everything is the same then don't write to disk
+          resolve(snippets)
+        } else {
+          currentSnippet.name = snippet.name
+          currentSnippet.prefix = snippet.prefix
+          currentSnippet.content = snippet.content
+          
+          fs.writeFile(consts.SNIPPET_FILE, JSON.stringify(snippets, null, 4), (err) => {
+            if (err) reject(err)
+            resolve(snippets)
+          })
+        }
+      }
+    }
+  })
+}
+
+module.exports = updateSnippet