diff --git a/app/src/main/java/com/iqball/app/MainActivity.kt b/app/src/main/java/com/iqball/app/MainActivity.kt
index 964daee..de4e2e4 100644
--- a/app/src/main/java/com/iqball/app/MainActivity.kt
+++ b/app/src/main/java/com/iqball/app/MainActivity.kt
@@ -7,21 +7,23 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.MutableState
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Modifier
 import com.google.gson.Gson
-import com.google.gson.GsonBuilder
 import com.iqball.app.api.EitherBodyConverter
 import com.iqball.app.api.EitherCallAdapterFactory
 import com.iqball.app.api.service.IQBallService
-import com.iqball.app.page.RegisterPage
+import com.iqball.app.page.HomePage
+import com.iqball.app.page.LoginPage
+import com.iqball.app.session.DataSession
+import com.iqball.app.session.Session
 import com.iqball.app.ui.theme.IQBallTheme
 import okhttp3.OkHttpClient
-import okhttp3.ResponseBody
-import retrofit2.Converter
 import retrofit2.Retrofit
 import retrofit2.converter.gson.GsonConverterFactory
 import retrofit2.create
-import java.lang.reflect.Type
 
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -46,8 +48,12 @@ class MainActivity : ComponentActivity() {
         setContent {
             IQBallTheme {
                 // A surface container using the 'background' color from the theme
-                Surface(modifier = Modifier.fillMaxSize(), color = MaterialTheme.colorScheme.background) {
-                    App(service)
+                Surface(
+                    modifier = Modifier.fillMaxSize(),
+                    color = MaterialTheme.colorScheme.background
+                ) {
+                    val sessionState = remember { mutableStateOf<Session>(DataSession()) }
+                    App(service, sessionState)
                 }
             }
         }
@@ -55,6 +61,16 @@ class MainActivity : ComponentActivity() {
 }
 
 @Composable
-fun App(service: IQBallService) {
-    RegisterPage(service)
+fun App(service: IQBallService, sessionState: MutableState<Session>) {
+
+    val loginPage: @Composable () -> Unit = {
+        LoginPage(service = service, onLoginSuccess = { auth ->
+            sessionState.value = DataSession(auth)
+        })
+    }
+
+    val homePage : @Composable () -> Unit = { HomePage(service, sessionState.value) }
+    val currentPage = remember(sessionState.value.auth) { if (sessionState.value.auth == null) loginPage else homePage }
+
+    currentPage()
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/iqball/app/page/HomePage.kt b/app/src/main/java/com/iqball/app/page/HomePage.kt
new file mode 100644
index 0000000..da8f56e
--- /dev/null
+++ b/app/src/main/java/com/iqball/app/page/HomePage.kt
@@ -0,0 +1,10 @@
+package com.iqball.app.page
+
+import androidx.compose.runtime.Composable
+import com.iqball.app.api.service.IQBallService
+import com.iqball.app.session.Session
+
+@Composable
+fun HomePage(service: IQBallService, session: Session) {
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/iqball/app/page/LoginPage.kt b/app/src/main/java/com/iqball/app/page/LoginPage.kt
index f6f8748..55f6de7 100644
--- a/app/src/main/java/com/iqball/app/page/LoginPage.kt
+++ b/app/src/main/java/com/iqball/app/page/LoginPage.kt
@@ -2,8 +2,70 @@ package com.iqball.app.page
 
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.Button
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Surface
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import arrow.core.Either
+import com.iqball.app.api.service.AuthService
+import com.iqball.app.session.Authentication
+import kotlinx.coroutines.runBlocking
+import kotlinx.datetime.LocalDateTime
 
 @Composable
-fun LoginPage() {
-    Text(text = "Login Page")
+fun LoginPage(service: AuthService, onLoginSuccess : (Authentication) -> Unit) {
+    var username by remember { mutableStateOf("") }
+    var password by remember { mutableStateOf("") }
+
+    Surface(
+        color = Color.White,
+        modifier = Modifier.fillMaxSize()
+    ) {
+        Column(
+            modifier = Modifier
+                .padding(16.dp)
+                .fillMaxSize(),
+            verticalArrangement = Arrangement.Center,
+            horizontalAlignment = Alignment.CenterHorizontally
+        ) {
+            Text(
+                text = "Login",
+                fontSize = 28.sp,
+                color = Color.Black
+            )
+            Spacer(modifier = Modifier.height(16.dp))
+            OutlinedTextField(
+                value = username,
+                onValueChange = { username = it },
+                label = { Text("Username") },
+                modifier = Modifier.fillMaxWidth()
+            )
+            Spacer(modifier = Modifier.height(16.dp))
+            OutlinedTextField(
+                value = password,
+                onValueChange = { password = it },
+                label = { Text("Password") },
+                modifier = Modifier.fillMaxWidth()
+            )
+            Spacer(modifier = Modifier.height(16.dp))
+
+            Button(onClick = {
+                runBlocking {
+                    when(val response = service.login(AuthService.LoginRequest(username, password))){
+                        is Either.Left -> println(response.value)
+
+                        is Either.Right ->  onLoginSuccess(Authentication(response.value.token, LocalDateTime.parse(response.value.expirationDate)))
+                    }
+                }
+            }) {
+                Text(text = "Se connecter")
+            }
+        }
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/iqball/app/page/RegisterPage.kt b/app/src/main/java/com/iqball/app/page/RegisterPage.kt
index 6bb14bc..720c36e 100644
--- a/app/src/main/java/com/iqball/app/page/RegisterPage.kt
+++ b/app/src/main/java/com/iqball/app/page/RegisterPage.kt
@@ -3,21 +3,14 @@ package com.iqball.app.page
 import android.util.Log
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import arrow.core.Either
 import com.iqball.app.api.service.AuthService
-import com.iqball.app.api.service.AuthService.RegisterRequest
 import com.iqball.app.api.service.IQBallService
-import com.iqball.app.session.Authentication
-import com.iqball.app.session.MutableSession
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.coroutineScope
-import kotlinx.coroutines.delay
-import kotlinx.coroutines.launch
-import kotlinx.coroutines.runBlocking
 
 @Composable
 fun RegisterPage(service: IQBallService) {
@@ -25,7 +18,7 @@ fun RegisterPage(service: IQBallService) {
 
     var text by remember { mutableStateOf("No message !") }
 
-    runBlocking {
+    LaunchedEffect(Unit) {
         val result = service.login(AuthService.LoginRequest("maxime@mail.com", "123456"))
 
         when (result) {
diff --git a/app/src/main/java/com/iqball/app/session/DataSession.kt b/app/src/main/java/com/iqball/app/session/DataSession.kt
new file mode 100644
index 0000000..686adc1
--- /dev/null
+++ b/app/src/main/java/com/iqball/app/session/DataSession.kt
@@ -0,0 +1,3 @@
+package com.iqball.app.session
+
+data class DataSession(override val auth: Authentication? = null) : Session
\ No newline at end of file
diff --git a/app/src/main/java/com/iqball/app/session/MutableSession.kt b/app/src/main/java/com/iqball/app/session/MutableSession.kt
deleted file mode 100644
index 37219bf..0000000
--- a/app/src/main/java/com/iqball/app/session/MutableSession.kt
+++ /dev/null
@@ -1,5 +0,0 @@
-package com.iqball.app.session
-
-interface MutableSession : Session {
-    override var auth: Authentication
-}
\ No newline at end of file
diff --git a/app/src/main/java/com/iqball/app/session/Session.kt b/app/src/main/java/com/iqball/app/session/Session.kt
index bb34b40..e0c1975 100644
--- a/app/src/main/java/com/iqball/app/session/Session.kt
+++ b/app/src/main/java/com/iqball/app/session/Session.kt
@@ -1,5 +1,5 @@
 package com.iqball.app.session
 
 interface Session {
-    val auth: Authentication
+    val auth: Authentication?
 }
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 9c53489..f10c49e 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-agp = "8.3.0"
+agp = "8.2.2"
 arrowCore = "1.2.1"
 converterGson = "2.9.0"
 kotlin = "1.9.0"