From cdea89e8ac9fd7b5e823aff519b9f1650870cdc5 Mon Sep 17 00:00:00 2001
From: AkiraFukushima <h3.poteto@gmail.com>
Date: Mon, 2 Apr 2018 22:17:08 +0900
Subject: [PATCH] refs #100 Swap backward a account in preferences

---
 src/main/account.js                       | 19 ++++++++++++++++++-
 src/main/index.js                         | 11 +++++++++++
 src/renderer/store/Preferences/Account.js | 12 +++++++++++-
 3 files changed, 40 insertions(+), 2 deletions(-)

diff --git a/src/main/account.js b/src/main/account.js
index 896515af..eb88222f 100644
--- a/src/main/account.js
+++ b/src/main/account.js
@@ -111,10 +111,27 @@ export default class Account {
       }
     )
     await this.updateAccount(backwarded._id, Object.assign(backwarded, { order: (backwarded.order + 1) }))
-    // Forward account order.
+    // Forward account order
     const updated = await this.updateAccount(ac._id, Object.assign(ac, { order: (ac.order - 1) }))
     return updated
   }
+
+  async backwardAccount (ac) {
+    const length = await this.countAuthorizedAccounts()
+    if (ac.order >= length) {
+      return ac.order
+    }
+    // Find account which is forwarded
+    const forwarded = await this.searchAccount(
+      {
+        order: ac.order + 1
+      }
+    )
+    await this.updateAccount(forwarded._id, Object.assign(forwarded, { order: (forwarded.order - 1) }))
+    // Backward account order
+    const updated = await this.updateAccount(ac._id, Object.assign(ac, { order: (ac.order + 1) }))
+    return updated
+  }
 }
 
 class EmptyRecordError {
diff --git a/src/main/index.js b/src/main/index.js
index 85a4b23a..f9c45f0b 100644
--- a/src/main/index.js
+++ b/src/main/index.js
@@ -320,6 +320,17 @@ ipcMain.on('forward-account', (event, acct) => {
     })
 })
 
+ipcMain.on('backward-account', (event, acct) => {
+  const account = new Account(db)
+  account.backwardAccount(acct)
+    .then(() => {
+      event.sender.send('response-backward-account')
+    })
+    .catch((err) => {
+      event.sender.send('error-backward-account', err)
+    })
+})
+
 // streaming
 let userStreaming = null
 
diff --git a/src/renderer/store/Preferences/Account.js b/src/renderer/store/Preferences/Account.js
index 01d21535..82a69c50 100644
--- a/src/renderer/store/Preferences/Account.js
+++ b/src/renderer/store/Preferences/Account.js
@@ -56,7 +56,17 @@ const Account = {
       })
     },
     backwardAccount ({ commit }, account) {
-
+      return new Promise((resolve, reject) => {
+        ipcRenderer.send('backward-account', account)
+        ipcRenderer.once('error-backward-account', (event, err) => {
+          ipcRenderer.removeAllListeners('response-forward-account')
+          reject(err)
+        })
+        ipcRenderer.once('response-backward-account', (event) => {
+          ipcRenderer.removeAllListeners('error-backward-account')
+          resolve()
+        })
+      })
     }
   }
 }