diff --git a/src/components/Authorize.vue b/src/components/Authorize.vue
index 585ee3d..37faeec 100644
--- a/src/components/Authorize.vue
+++ b/src/components/Authorize.vue
@@ -5,13 +5,10 @@
 </template>
 
 <script lang="ts">
-import { GithubToken } from '@/modules/user/interfaces/GithubToken'
-import { GithubTokenError } from '@/modules/user/interfaces/GithubTokenError'
 import { useGitHubLogin } from '@/hooks/useGitHubLogin.hook'
 import { defineComponent, onBeforeMount, ref } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
-
-const AUTHENTICATION_SERVER = 'https://litenote.li212.fr'
+import { signIn } from '@/modules/user/service/signIn'
 
 export default defineComponent({
   name: 'Authorize',
@@ -25,11 +22,7 @@ export default defineComponent({
 
     onBeforeMount(async () => {
       if (code) {
-        const authenticationServerURL = new URL(AUTHENTICATION_SERVER)
-        authenticationServerURL.searchParams.set('code', code.toString())
-
-        const response = await fetch(authenticationServerURL.toString())
-        const body = (await response.json()) as GithubToken | GithubTokenError
+        const body = await signIn(code.toString())
 
         if ('error' in body) {
           hasError.value = true
diff --git a/src/hooks/useGitHubLogin.hook.ts b/src/hooks/useGitHubLogin.hook.ts
index d64d96f..7f76d13 100644
--- a/src/hooks/useGitHubLogin.hook.ts
+++ b/src/hooks/useGitHubLogin.hook.ts
@@ -1,72 +1,30 @@
 import { computed, ref } from 'vue'
 
-import { DataType } from '@/data/DataType.enum'
-import { data } from '@/data/data'
 import { confirmMessage } from '@/utils/notif'
-import { GithubAccessToken } from '@/data/models/GithubAccessToken'
-import { Octokit } from '@octokit/rest'
 import { GithubToken } from '@/modules/user/interfaces/GithubToken'
-import { addSeconds } from 'date-fns'
+import { getAccessToken, saveAccessToken } from '@/modules/user/service/signIn'
 
-const personalTokenId = 'token'
 const username = ref<string | null>(null)
 const accessToken = ref<string | null>(null)
 
 let init = true
 
 export const useGitHubLogin = () => {
-  const getAccessToken = async () => {
-    const response = await data.get<
-      DataType.GithubAccessToken,
-      GithubAccessToken
-    >(data.generateId(DataType.GithubAccessToken, personalTokenId))
+  const saveAccessTokenToLocal = async () => {
+    const response = await getAccessToken()
     username.value = response?.username || ''
     accessToken.value = response?.token || ''
-
-    return response
   }
 
   if (init) {
     init = false
-    getAccessToken()
+    saveAccessTokenToLocal()
   }
 
   const saveCredentials = async (githubToken: GithubToken) => {
-    const actualPAT = await getAccessToken()
+    const accessToken = await saveAccessToken(githubToken)
 
-    const expirationDate = addSeconds(
-      new Date(),
-      githubToken.expires_in
-    ).toISOString()
-
-    const refreshTokenExpirationDate = addSeconds(
-      new Date(),
-      githubToken.refresh_token_expires_in
-    ).toISOString()
-
-    const accessToken: GithubAccessToken = {
-      ...actualPAT,
-      _id: data.generateId(DataType.GithubAccessToken, personalTokenId),
-      $type: DataType.GithubAccessToken,
-      token: githubToken.access_token,
-      expiresIn: githubToken.expires_in,
-      expirationDate,
-      refreshToken: githubToken.refresh_token,
-      refreshTokenExpiresIn: githubToken.refresh_token_expires_in,
-      refreshTokenExpirationDate,
-      username: ''
-    }
-
-    const octokit = new Octokit({
-      auth: accessToken.token
-    })
-
-    const user = await octokit.request('GET /user')
-    accessToken.username = user.data.login
-    username.value = accessToken.username
-
-    await data.add(accessToken)
-    getAccessToken()
+    await saveAccessTokenToLocal()
     confirmMessage(`${accessToken.username} is logged in!`)
   }
 
diff --git a/src/modules/repo/services/repo.ts b/src/modules/repo/services/repo.ts
index 1beb579..69363a2 100644
--- a/src/modules/repo/services/repo.ts
+++ b/src/modules/repo/services/repo.ts
@@ -1,76 +1,9 @@
-import { data } from '@/data/data'
-import { DataType } from '@/data/DataType.enum'
-import { GithubAccessToken } from '@/data/models/GithubAccessToken'
 import { useGitHubLogin } from '@/hooks/useGitHubLogin.hook'
 import { useMarkdown } from '@/hooks/useMarkdown.hook'
 import { useNoteCache } from '@/modules/note/hooks/useNoteCache'
 import { RepoFile } from '@/modules/repo/interfaces/RepoFile'
 import { UserSettings } from '@/modules/repo/interfaces/UserSettings'
-import { GithubToken } from '@/modules/user/interfaces/GithubToken'
-import { GithubTokenError } from '@/modules/user/interfaces/GithubTokenError'
 import { Octokit } from '@octokit/rest'
-import { addMilliseconds } from 'date-fns'
-
-const personalTokenId = 'token'
-
-const GITHUB_URL = 'https://github.com/login/oauth/access_token'
-
-export const refreshToken = async () => {
-  const accessToken = await data.get<
-    DataType.GithubAccessToken,
-    GithubAccessToken
-  >(data.generateId(DataType.GithubAccessToken, personalTokenId))
-  if (!accessToken) {
-    return
-  }
-
-  console.log(
-    new Date(accessToken.expirationDate) >= new Date(),
-    accessToken.expirationDate,
-    new Date()
-  )
-
-  if (new Date(accessToken.expirationDate) >= new Date()) {
-    const response = await fetch(GITHUB_URL, {
-      method: 'POST',
-      body: JSON.stringify({
-        refresh_token: accessToken.refreshToken,
-        grant_type: 'refresh_token'
-      })
-    })
-    const githubToken = (await response.json()) as
-      | GithubToken
-      | GithubTokenError
-
-    if ('error' in githubToken) {
-      return
-    }
-
-    const expirationDate = addMilliseconds(
-      new Date(),
-      githubToken.expires_in
-    ).toISOString()
-
-    const refreshTokenExpirationDate = addMilliseconds(
-      new Date(),
-      githubToken.refresh_token_expires_in
-    ).toISOString()
-
-    const updatedAccessToken: GithubAccessToken = {
-      ...accessToken,
-      token: githubToken.access_token,
-      expiresIn: githubToken.expires_in,
-      expirationDate,
-      refreshToken: githubToken.refresh_token,
-      refreshTokenExpiresIn: githubToken.refresh_token_expires_in,
-      refreshTokenExpirationDate
-    }
-
-    await data.add<DataType.GithubAccessToken>({
-      ...updatedAccessToken
-    })
-  }
-}
 
 export const getFiles = async (
   owner: string,
diff --git a/src/modules/user/service/signIn.ts b/src/modules/user/service/signIn.ts
new file mode 100644
index 0000000..9b9907b
--- /dev/null
+++ b/src/modules/user/service/signIn.ts
@@ -0,0 +1,110 @@
+import { data } from '@/data/data'
+import { DataType } from '@/data/DataType.enum'
+import { GithubAccessToken } from '@/data/models/GithubAccessToken'
+import { GithubToken } from '@/modules/user/interfaces/GithubToken'
+import { GithubTokenError } from '@/modules/user/interfaces/GithubTokenError'
+import { Octokit } from '@octokit/rest'
+import { addMilliseconds } from 'date-fns'
+
+const AUTHENTICATION_SERVER = 'https://litenote.li212.fr'
+const personalTokenId = 'token'
+
+export const signIn = async (
+  code: string
+): Promise<GithubToken | GithubTokenError> => {
+  const authenticationServerURL = new URL(AUTHENTICATION_SERVER)
+  authenticationServerURL.searchParams.set('code', code)
+
+  const response = await fetch(authenticationServerURL.toString())
+  const body = (await response.json()) as GithubToken | GithubTokenError
+
+  return body
+}
+
+export const refreshToken = async () => {
+  const accessToken = await data.get<
+    DataType.GithubAccessToken,
+    GithubAccessToken
+  >(data.generateId(DataType.GithubAccessToken, personalTokenId))
+
+  if (!accessToken) {
+    return null
+  }
+
+  console.log(
+    new Date(accessToken.expirationDate) >= new Date(),
+    accessToken.expirationDate,
+    new Date()
+  )
+
+  if (new Date(accessToken.expirationDate) >= new Date()) {
+    const authenticationServerURL = new URL(AUTHENTICATION_SERVER)
+    authenticationServerURL.searchParams.set('type', 'refresh')
+
+    const response = await fetch(authenticationServerURL.toString(), {
+      method: 'POST',
+      body: JSON.stringify({
+        refresh_token: accessToken.refreshToken,
+        grant_type: 'refresh_token'
+      })
+    })
+    const githubToken = (await response.json()) as
+      | GithubToken
+      | GithubTokenError
+
+    if ('error' in githubToken) {
+      return null
+    }
+
+    return await saveAccessToken(githubToken)
+  }
+
+  return accessToken
+}
+
+export const getAccessToken = async () => {
+  const response = await data.get<
+    DataType.GithubAccessToken,
+    GithubAccessToken
+  >(data.generateId(DataType.GithubAccessToken, personalTokenId))
+
+  return response
+}
+
+export const saveAccessToken = async (githubToken: GithubToken) => {
+  const actualPAT = await getAccessToken()
+
+  const expirationDate = addMilliseconds(
+    new Date(),
+    githubToken.expires_in
+  ).toISOString()
+
+  const refreshTokenExpirationDate = addMilliseconds(
+    new Date(),
+    githubToken.refresh_token_expires_in
+  ).toISOString()
+
+  const accessToken: GithubAccessToken = {
+    ...actualPAT,
+    _id: data.generateId(DataType.GithubAccessToken, personalTokenId),
+    $type: DataType.GithubAccessToken,
+    token: githubToken.access_token,
+    expiresIn: githubToken.expires_in,
+    expirationDate,
+    refreshToken: githubToken.refresh_token,
+    refreshTokenExpiresIn: githubToken.refresh_token_expires_in,
+    refreshTokenExpirationDate,
+    username: ''
+  }
+
+  const octokit = new Octokit({
+    auth: accessToken.token
+  })
+
+  const user = await octokit.request('GET /user')
+  accessToken.username = user.data.login
+
+  await data.add(accessToken)
+
+  return accessToken
+}