app/src/main/java/com/faraphel/tasks_valider/connectivity/task/TaskClient.kt

@@ -1,5 +1,6 @@
 package com.faraphel.tasks_valider.connectivity.task
 
+import com.faraphel.tasks_valider.connectivity.task.api.TaskSessionManagerClientApi
 import com.faraphel.tasks_valider.database.api.client.TaskEntityHttpClient
 import com.faraphel.tasks_valider.database.api.client.entities.*
 
@@ -17,13 +18,19 @@ class TaskClient(
 ) {
     private val httpClient = TaskEntityHttpClient(address, port, baseCookies)
 
-    val clientApi = ClassClientApi(httpClient)
-    val personApi = PersonClientApi(httpClient)
-    val sessionApi = SessionClientApi(httpClient)
-    val subjectApi = SubjectClientApi(httpClient)
-    val taskApi = TaskClientApi(httpClient)
-    val validationApi = ValidationClientApi(httpClient)
+    // all the entities API
+    class Entities(httpClient: TaskEntityHttpClient) {
+        val client = ClassClientApi(httpClient)
+        val person = PersonClientApi(httpClient)
+        val session = SessionClientApi(httpClient)
+        val subject = SubjectClientApi(httpClient)
+        val task = TaskClientApi(httpClient)
+        val validation = ValidationClientApi(httpClient)
 
-    val relationClassPersonApi = RelationClassPersonClientApi(httpClient)
-    val relationPersonSessionSubjectApi = RelationPersonSessionSubjectClientApi(httpClient)
+        val relationClassPerson = RelationClassPersonClientApi(httpClient)
+        val relationPersonSessionSubject = RelationPersonSessionSubjectClientApi(httpClient)
+    }
+    val entities = Entities(httpClient)
+
+    val session = TaskSessionManagerClientApi(httpClient)
 }

app/src/main/java/com/faraphel/tasks_valider/connectivity/task/TaskServer.kt

@@ -1,6 +1,6 @@
 package com.faraphel.tasks_valider.connectivity.task
 
-import com.faraphel.tasks_valider.connectivity.task.api.TaskSessionManagerApi
+import com.faraphel.tasks_valider.connectivity.task.api.TaskSessionManagerServerApi
 import com.faraphel.tasks_valider.connectivity.task.session.TaskSessionManager
 import com.faraphel.tasks_valider.database.TaskDatabase
 import com.faraphel.tasks_valider.database.api.server.DatabaseApi
@@ -24,7 +24,7 @@ class TaskServer(
 ) : NanoHTTPD(port) {
     private val sessionManager = TaskSessionManager(adminPersonEntity)  ///< the session manager
     private val databaseApi = DatabaseApi(this.database, session)  ///< the api of the database
-    private val sessionManagerApi = TaskSessionManagerApi(this.sessionManager, this.database)  ///< the api of the session manager
+    private val sessionManagerApi = TaskSessionManagerServerApi(this.sessionManager, this.database)  ///< the api of the session manager
 
     /**
      * Get the admin person entity

app/src/main/java/com/faraphel/tasks_valider/connectivity/task/api/TaskSessionManagerClientApi.kt

@@ -0,0 +1,58 @@
+package com.faraphel.tasks_valider.connectivity.task.api
+
+import com.faraphel.tasks_valider.connectivity.task.session.TaskSession
+import com.faraphel.tasks_valider.database.api.client.TaskEntityHttpClient
+import com.faraphel.tasks_valider.database.entities.SessionEntity
+import com.faraphel.tasks_valider.database.entities.error.HttpException
+import com.faraphel.tasks_valider.utils.parser
+
+
+/**
+ * Interface to communicate with the server session manager
+ */
+class TaskSessionManagerClientApi(private val client: TaskEntityHttpClient) {
+    /**
+     * Create a new session
+     * @param cardId the id of the user's card
+     * @param password the password of the user
+     */
+    fun newFromCardId(cardId: String, password: String): TaskSession {
+        val response = this.client.post(
+            "sessions/self",
+            parser.toJson(mapOf(
+                "card_id" to cardId,
+                "password" to password
+            ))
+        )
+
+        // in case of error, notify it
+        if (!response.isSuccessful)
+            throw HttpException(response.code)
+
+        val data = response.body.string()
+
+        // parse the result
+        return parser.fromJson(
+            data,
+            TaskSession::class.java
+        )
+
+    }
+
+    /**
+     * Get the current session
+     */
+    fun getSelf(): TaskSession {
+        val response = this.client.get("sessions/self")
+
+        // in case of error, notify it
+        if (!response.isSuccessful)
+            throw HttpException(response.code)
+
+        // parse the result
+        return parser.fromJson(
+            response.body.string(),
+            TaskSession::class.java
+        )
+    }
+}

app/src/main/java/com/faraphel/tasks_valider/connectivity/task/api/TaskSessionManagerServerApi.kt

@@ -4,6 +4,8 @@ import com.faraphel.tasks_valider.connectivity.task.session.TaskPermission
 import com.faraphel.tasks_valider.connectivity.task.session.TaskSession
 import com.faraphel.tasks_valider.connectivity.task.session.TaskSessionManager
 import com.faraphel.tasks_valider.database.TaskDatabase
+import com.faraphel.tasks_valider.database.entities.PersonEntity
+import com.faraphel.tasks_valider.utils.getBody
 import com.faraphel.tasks_valider.utils.parser
 import com.google.gson.reflect.TypeToken
 import fi.iki.elonen.NanoHTTPD
@@ -12,7 +14,7 @@ import fi.iki.elonen.NanoHTTPD
 /**
  * the HTTP API for the session manager
  */
-class TaskSessionManagerApi(
+class TaskSessionManagerServerApi(
     private val sessionManager: TaskSessionManager,
     private val database: TaskDatabase
 ) {
@@ -72,18 +74,14 @@ class TaskSessionManagerApi(
             NanoHTTPD.Method.POST -> {
                 // get the user identifiers
                 val identifiers: Map<String, String> = parser.fromJson(
-                    httpSession.inputStream.bufferedReader().readText(),
+                    httpSession.getBody(),
                     object : TypeToken<Map<String, String>>() {}.type
                 )
 
-                // check for the id
-                if (!identifiers.contains("id"))
-                    return NanoHTTPD.newFixedLengthResponse(
-                        NanoHTTPD.Response.Status.BAD_REQUEST,
-                        "text/plain",
-                        "Missing id"
-                    )
+                val person: PersonEntity
 
+                // check for the id
+                if (identifiers.contains("id")) {
                     // get the id of the user (if invalid, return an error)
                     val personId: Long = identifiers["id"]!!.toLongOrNull()
                         ?: return NanoHTTPD.newFixedLengthResponse(
@@ -92,6 +90,29 @@ class TaskSessionManagerApi(
                             "Invalid id"
                         )
 
+                    // check if the identifiers are correct
+                    person = this.database.personDao().getById(personId)
+                        ?: return NanoHTTPD.newFixedLengthResponse(
+                            NanoHTTPD.Response.Status.BAD_REQUEST,
+                            "text/plain",
+                            "No person with this id"
+                        )
+                } else if (identifiers.contains("card_id")) {
+                    // check if the identifiers are correct
+                    person = this.database.personDao().getByCardId(identifiers["card_id"]!!)
+                        ?: return NanoHTTPD.newFixedLengthResponse(
+                            NanoHTTPD.Response.Status.BAD_REQUEST,
+                            "text/plain",
+                            "No person with this id"
+                        )
+                } else {
+                    return NanoHTTPD.newFixedLengthResponse(
+                        NanoHTTPD.Response.Status.BAD_REQUEST,
+                        "text/plain",
+                        "Missing id or card_id"
+                    )
+                }
+
                 // check for the password
                 if (!identifiers.contains("password"))
                     return NanoHTTPD.newFixedLengthResponse(
@@ -100,14 +121,6 @@ class TaskSessionManagerApi(
                         "Missing password"
                     )
 
-                // check if the identifiers are correct
-                val person = this.database.personDao().getById(personId)
-                    ?: return NanoHTTPD.newFixedLengthResponse(
-                        NanoHTTPD.Response.Status.BAD_REQUEST,
-                        "text/plain",
-                        "No person with this id"
-                    )
-
                 // check if the password is correct
                 if (!person.checkPassword(identifiers["password"]!!))
                     return NanoHTTPD.newFixedLengthResponse(
@@ -119,11 +132,11 @@ class TaskSessionManagerApi(
                 // create a new session for the userJHH
                 val (sessionToken, session) = this.sessionManager.newSessionData(person)
 
-                // create the response
+                // create the response with the session data
                 val response = NanoHTTPD.newFixedLengthResponse(
                     NanoHTTPD.Response.Status.OK,
-                    "text/plain",
-                    "Session updated"
+                    "application/json",
+                    parser.toJson(session)
                 )
 
                 // set the session token in the cookies

app/src/main/java/com/faraphel/tasks_valider/connectivity/task/session/TaskSession.kt

@@ -1,6 +1,7 @@
 package com.faraphel.tasks_valider.connectivity.task.session
 
 import com.faraphel.tasks_valider.database.entities.PersonEntity
+import com.google.gson.annotations.Expose
 import kotlinx.serialization.Serializable
 
 
@@ -9,5 +10,5 @@ import kotlinx.serialization.Serializable
  */
 @Serializable
 data class TaskSession(
-    val person: PersonEntity,
+    @Expose val person: PersonEntity,
 )

app/src/main/java/com/faraphel/tasks_valider/database/dao/PersonDao.kt

@@ -18,6 +18,12 @@ interface PersonDao : BaseTaskDao<PersonEntity> {
     @Query("SELECT * FROM ${PersonEntity.TABLE_NAME} WHERE id = :id")
     fun getById(id: Long): PersonEntity?
 
+    /**
+     * Get the object from its card identifier
+     */
+    @Query("SELECT * FROM ${PersonEntity.TABLE_NAME} WHERE card_id = :cardId")
+    fun getByCardId(cardId: String): PersonEntity?
+
     @Query(
         "SELECT * FROM ${PersonEntity.TABLE_NAME} " +
         "WHERE id IN (" +

app/src/main/java/com/faraphel/tasks_valider/database/entities/ClassEntity.kt

@@ -4,12 +4,13 @@ import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.PrimaryKey
 import com.faraphel.tasks_valider.database.entities.base.BaseEntity
+import com.google.gson.annotations.Expose
 
 
 @Entity(tableName = ClassEntity.TABLE_NAME)
 data class ClassEntity (
-    @ColumnInfo("id") @PrimaryKey(autoGenerate = true) val id: Long = 0,
-    @ColumnInfo("name") val name: String,
+    @ColumnInfo("id") @PrimaryKey(autoGenerate = true) @Expose val id: Long = 0,
+    @ColumnInfo("name") @Expose val name: String,
 ) : BaseEntity() {
     companion object {
         const val TABLE_NAME = "classes"

app/src/main/java/com/faraphel/tasks_valider/database/entities/PersonEntity.kt

@@ -5,6 +5,7 @@ import androidx.room.Entity
 import androidx.room.PrimaryKey
 import com.faraphel.tasks_valider.connectivity.task.session.TaskRole
 import com.faraphel.tasks_valider.database.entities.base.BaseEntity
+import com.google.gson.annotations.Expose
 import kotlinx.serialization.Serializable
 import java.security.MessageDigest
 import java.util.*
@@ -12,12 +13,13 @@ import java.util.*
 @Serializable
 @Entity(tableName = PersonEntity.TABLE_NAME)
 data class PersonEntity (
-    @ColumnInfo("id") @PrimaryKey(autoGenerate = true) val id: Long = 0,
-    @ColumnInfo("first_name") val firstName: String,
-    @ColumnInfo("last_name") val lastName: String,
-    @ColumnInfo("card_id") val cardId: String? = null,
+
+    @ColumnInfo("id") @PrimaryKey(autoGenerate = true) @Expose val id: Long = 0,
+    @ColumnInfo("first_name") @Expose val firstName: String,
+    @ColumnInfo("last_name") @Expose val lastName: String,
+    @ColumnInfo("card_id") @Expose val cardId: String? = null,
     @ColumnInfo("password_hash") val passwordHash: String? = null,
-    @ColumnInfo("role") val role: TaskRole = TaskRole.STUDENT,
+    @ColumnInfo("role") @Expose val role: TaskRole = TaskRole.STUDENT,
 ) : BaseEntity() {
     companion object {
         const val TABLE_NAME = "persons"

app/src/main/java/com/faraphel/tasks_valider/database/entities/RelationClassPersonEntity.kt

@@ -4,6 +4,7 @@ import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.ForeignKey
 import com.faraphel.tasks_valider.database.entities.base.BaseEntity
+import com.google.gson.annotations.Expose
 
 @Entity(
     tableName = RelationClassPersonEntity.TABLE_NAME,
@@ -27,8 +28,8 @@ import com.faraphel.tasks_valider.database.entities.base.BaseEntity
     ]
 )
 data class RelationClassPersonEntity (
-    @ColumnInfo("student_id", index = true) val studentId: Long,
-    @ColumnInfo("class_id", index = true) val classId: Long,
+    @ColumnInfo("student_id", index = true) @Expose val studentId: Long,
+    @ColumnInfo("class_id", index = true) @Expose val classId: Long,
 ) : BaseEntity() {
     companion object {
         const val TABLE_NAME = "relation_class_person"

app/src/main/java/com/faraphel/tasks_valider/database/entities/RelationPersonSessionSubjectEntity.kt

@@ -4,6 +4,7 @@ import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.ForeignKey
 import com.faraphel.tasks_valider.database.entities.base.BaseEntity
+import com.google.gson.annotations.Expose
 
 
 /**
@@ -38,9 +39,9 @@ import com.faraphel.tasks_valider.database.entities.base.BaseEntity
     ]
 )
 data class RelationPersonSessionSubjectEntity (
-    @ColumnInfo("student_id", index = true) val studentId: Long,
-    @ColumnInfo("session_id", index = true) val sessionId: Long,
-    @ColumnInfo("subject_id", index = true) val subjectId: Long,
+    @ColumnInfo("student_id", index = true) @Expose val studentId: Long,
+    @ColumnInfo("session_id", index = true) @Expose val sessionId: Long,
+    @ColumnInfo("subject_id", index = true) @Expose val subjectId: Long,
 ) : BaseEntity() {
     companion object {
         const val TABLE_NAME = "relation_person_session_subject"

app/src/main/java/com/faraphel/tasks_valider/database/entities/SessionEntity.kt

@@ -5,6 +5,7 @@ import androidx.room.Entity
 import androidx.room.ForeignKey
 import androidx.room.PrimaryKey
 import com.faraphel.tasks_valider.database.entities.base.BaseEntity
+import com.google.gson.annotations.Expose
 import java.time.Instant
 
 @Entity(
@@ -19,9 +20,9 @@ import java.time.Instant
     ]
 )
 data class SessionEntity (
-    @ColumnInfo("id") @PrimaryKey(autoGenerate = true) val id: Long = 0,
-    @ColumnInfo("name") val name: String? = null,
-    @ColumnInfo("start") val start: Instant,
+    @ColumnInfo("id") @PrimaryKey(autoGenerate = true) @Expose val id: Long = 0,
+    @ColumnInfo("name") @Expose val name: String? = null,
+    @ColumnInfo("start") @Expose val start: Instant,
 
     @ColumnInfo("class_id", index = true) val classId: Long? = null,
 ) : BaseEntity() {

app/src/main/java/com/faraphel/tasks_valider/database/entities/SubjectEntity.kt

@@ -4,11 +4,12 @@ import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.PrimaryKey
 import com.faraphel.tasks_valider.database.entities.base.BaseEntity
+import com.google.gson.annotations.Expose
 
 @Entity(tableName = SubjectEntity.TABLE_NAME)
 data class SubjectEntity (
-    @ColumnInfo("id") @PrimaryKey(autoGenerate = true) val id: Long = 0,
-    @ColumnInfo("name") val name: String,
+    @ColumnInfo("id") @PrimaryKey(autoGenerate = true) @Expose val id: Long = 0,
+    @ColumnInfo("name") @Expose val name: String,
 ) : BaseEntity() {
     companion object {
         const val TABLE_NAME = "subjects"

app/src/main/java/com/faraphel/tasks_valider/database/entities/TaskEntity.kt

@@ -5,6 +5,7 @@ import androidx.room.Entity
 import androidx.room.ForeignKey
 import androidx.room.PrimaryKey
 import com.faraphel.tasks_valider.database.entities.base.BaseEntity
+import com.google.gson.annotations.Expose
 
 @Entity(
     tableName = TaskEntity.TABLE_NAME,
@@ -18,12 +19,12 @@ import com.faraphel.tasks_valider.database.entities.base.BaseEntity
     ]
 )
 data class TaskEntity (
-    @ColumnInfo("id") @PrimaryKey(autoGenerate = true) val id: Long = 0,
-    @ColumnInfo("title") val title: String,
-    @ColumnInfo("description") val description: String? = null,
-    @ColumnInfo("order") val order: Int,  ///< the order of the task in the list of the subject
+    @ColumnInfo("id") @PrimaryKey(autoGenerate = true) @Expose val id: Long = 0,
+    @ColumnInfo("title") @Expose val title: String,
+    @ColumnInfo("description") @Expose val description: String? = null,
+    @ColumnInfo("order") @Expose val order: Int,  ///< the order of the task in the list of the subject
 
-    @ColumnInfo("subject_id", index = true) val subjectId: Long,
+    @ColumnInfo("subject_id", index = true) @Expose val subjectId: Long,
 ) : BaseEntity() {
     companion object {
         const val TABLE_NAME = "tasks"

app/src/main/java/com/faraphel/tasks_valider/database/entities/ValidationEntity.kt

@@ -4,6 +4,7 @@ import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.ForeignKey
 import com.faraphel.tasks_valider.database.entities.base.BaseEntity
+import com.google.gson.annotations.Expose
 import java.time.Instant
 
 @Entity(
@@ -35,11 +36,11 @@ import java.time.Instant
     ]
 )
 data class ValidationEntity (
-    @ColumnInfo("teacher_id", index = true) val teacherId: Long,
-    @ColumnInfo("student_id", index = true) val studentId: Long,
-    @ColumnInfo("task_id", index = true) val taskId: Long,
+    @ColumnInfo("teacher_id", index = true) @Expose val teacherId: Long,
+    @ColumnInfo("student_id", index = true) @Expose val studentId: Long,
+    @ColumnInfo("task_id", index = true) @Expose val taskId: Long,
 
-    @ColumnInfo("date") val date: Instant,
+    @ColumnInfo("date") @Expose val date: Instant,
 ) : BaseEntity() {
     companion object {
         const val TABLE_NAME = "validations"

app/src/main/java/com/faraphel/tasks_valider/database/entities/error/HttpException.kt

@@ -3,4 +3,8 @@ package com.faraphel.tasks_valider.database.entities.error
 
 class HttpException(
     private val code: Int,
-) : Exception("Http Exception: $code")
+) : Exception("Http Exception: $code") {
+    fun getCode(): Int {
+        return code
+    }
+}

app/src/main/java/com/faraphel/tasks_valider/ui/screen/authentication/client.kt

@@ -0,0 +1,146 @@
+package com.faraphel.tasks_valider.ui.screen.authentication
+
+import android.app.Activity
+import android.widget.Toast
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.Button
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.MutableState
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.navigation.NavController
+import androidx.navigation.compose.NavHost
+import androidx.navigation.compose.composable
+import androidx.navigation.compose.rememberNavController
+import com.faraphel.tasks_valider.connectivity.task.TaskClient
+import com.faraphel.tasks_valider.connectivity.task.session.TaskSession
+import com.faraphel.tasks_valider.database.entities.error.HttpException
+import com.faraphel.tasks_valider.ui.screen.scan.qr.ScanBarcodeScreen
+import com.journeyapps.barcodescanner.BarcodeResult
+import okhttp3.HttpUrl.Companion.toHttpUrl
+
+
+/**
+ * Authentification screen where the client can give his information
+ */
+@Composable
+fun AuthenticationClientScreen(activity: Activity, client: TaskClient, session: MutableState<TaskSession?>) {
+    val controller = rememberNavController()
+    val barcode = remember { mutableStateOf<BarcodeResult?>(null) }
+
+    NavHost(navController = controller, startDestination = "main") {
+        composable("main") {
+            AuthenticationClientContent(activity, controller, client, session, barcode)
+        }
+        composable("scan") {
+            if (barcode.value == null) ScanBarcodeScreen(activity, barcode)
+            else controller.navigate("main")
+        }
+    }
+}
+
+
+@Composable
+fun AuthenticationClientContent(
+    activity: Activity,
+    controller: NavController,
+    client: TaskClient,
+    session: MutableState<TaskSession?>,
+    barcode: MutableState<BarcodeResult?>,
+) {
+    val cardId = remember { mutableStateOf("") }
+    val password = remember { mutableStateOf("") }
+
+    // check if the barcode contain information about the card
+
+    var defaultCardId = ""
+    if (barcode.value != null) {
+        val studentUrl = barcode.value!!.text.toHttpUrl()
+        cardId.value = studentUrl.pathSegments[0]
+    }
+
+    Column(
+        modifier = Modifier.fillMaxSize(),
+        verticalArrangement = Arrangement.Center,
+        horizontalAlignment = Alignment.CenterHorizontally
+    ) {
+        // title
+        Text(
+            text = "Authentication",
+            fontSize = 32.sp
+        )
+
+        // separator
+        Spacer(modifier = Modifier.height(24.dp))
+
+        // card identifier
+        Row {
+            // text
+            TextField(
+                value = cardId.value,
+                placeholder = { Text("Card Id") },
+                onValueChange = { text -> cardId.value = text },
+            )
+            // button to scan the card
+            Button(onClick = {
+                barcode.value = null
+                controller.navigate("scan")
+            }) {
+                Text("Scan")
+            }
+        }
+
+        // password
+        TextField(
+            value = password.value,
+            visualTransformation = PasswordVisualTransformation(),
+            placeholder = { Text("Password") },
+            onValueChange = { text -> password.value = text },
+        )
+
+        // separator
+        Spacer(modifier = Modifier.height(24.dp))
+
+        // submit button
+
+        Button(onClick = {
+            Thread { authenticate(activity, client, cardId.value, password.value, session) }.start()
+        }) {
+            Text("Submit")
+        }
+    }
+}
+
+fun authenticate(
+    activity: Activity,
+    client: TaskClient,
+    cardId: String,
+    password: String,
+    session: MutableState<TaskSession?>
+) {
+    try {
+        // try to get a session from the identifiers
+        session.value = client.session.newFromCardId(cardId, password)
+    } catch (exception: HttpException) {
+        // in case of error, show a message to the user
+        when (exception.getCode()) {
+            401 -> {
+                activity.runOnUiThread {
+                    Toast.makeText(activity, "Invalid card id or password", Toast.LENGTH_SHORT).show()
+                }
+            }
+            else -> {
+                activity.runOnUiThread {
+                    Toast.makeText(activity, "Unknown error: $exception", Toast.LENGTH_SHORT).show()
+                }
+            }
+        }
+    }
+}

app/src/main/java/com/faraphel/tasks_valider/ui/screen/authentication/server.kt

@@ -1,4 +1,4 @@
-package com.faraphel.tasks_valider.ui.screen.authentification
+package com.faraphel.tasks_valider.ui.screen.authentication
 
 import androidx.compose.foundation.layout.*
 import androidx.compose.material3.Button
@@ -20,7 +20,7 @@ import com.faraphel.tasks_valider.database.entities.PersonEntity
  * Authentification screen where the host can give his information
  */
 @Composable
-fun AuthentificationServerScreen(personEntity: MutableState<PersonEntity?>) {
+fun AuthenticationServerScreen(personEntity: MutableState<PersonEntity?>) {
     val firstName = remember { mutableStateOf("") }
     val lastName = remember { mutableStateOf("") }
 

app/src/main/java/com/faraphel/tasks_valider/ui/screen/authentification/client.kt

@@ -1,40 +0,0 @@
-package com.faraphel.tasks_valider.ui.screen.authentification
-
-import androidx.compose.foundation.layout.Column
-import androidx.compose.material3.Button
-import androidx.compose.material3.Text
-import androidx.compose.material3.TextField
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.ui.text.input.PasswordVisualTransformation
-
-
-/**
- * Authentification screen where the client can give his information
- */
-@Composable
-fun AuthentificationClientScreen() {
-    val cardId = remember { mutableStateOf("") }
-    val password = remember { mutableStateOf("") }
-
-    Column {
-        // card identifier
-        TextField(
-            value = cardId.value,
-            onValueChange = { text -> cardId.value = text },
-        )
-
-        // password
-        TextField(
-            value = password.value,
-            visualTransformation = PasswordVisualTransformation(),
-            onValueChange = { text -> password.value = text },
-        )
-
-        // button
-        Button(onClick = { /* do something */ }) {
-            Text("Submit")
-        }
-    }
-}

app/src/main/java/com/faraphel/tasks_valider/ui/screen/communication/internet/client.kt

@@ -1,9 +1,7 @@
 package com.faraphel.tasks_valider.ui.screen.communication.internet
 
 import android.app.Activity
-import android.os.Build
-import androidx.annotation.RequiresApi
-import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.*
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material3.Button
 import androidx.compose.material3.Text
@@ -13,21 +11,38 @@ import androidx.compose.runtime.MutableState
 import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
 import com.faraphel.tasks_valider.connectivity.task.TaskClient
+import com.faraphel.tasks_valider.connectivity.task.session.TaskSession
+import com.faraphel.tasks_valider.ui.screen.authentication.AuthenticationClientScreen
 import com.faraphel.tasks_valider.ui.screen.communication.DEFAULT_SERVER_ADDRESS
 import com.faraphel.tasks_valider.ui.screen.communication.DEFAULT_SERVER_PORT
 import com.faraphel.tasks_valider.ui.screen.communication.RANGE_SERVER_PORT
+import com.faraphel.tasks_valider.ui.screen.task.TaskSessionController
 
 
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun CommunicationInternetClientScreen(activity: Activity) {
     val client = remember { mutableStateOf<TaskClient?>(null) }
+    val session = remember { mutableStateOf<TaskSession?>(null) }
 
-    // TODO(Faraphel): fix and get a user
-    // if (client.value == null) CommunicationInternetClientContent(client)
-    // else TaskSessionScreen(activity, client.value!!, user)
+    // if the client is not connected, show the connection screen
+    if (client.value == null)
+        return CommunicationInternetClientContent(client)
+    // if the user is not authenticated, show the authentication screen
+    if (session.value == null)
+        return AuthenticationClientScreen(activity, client.value!!, session)
+
+    // show the main screen
+    TaskSessionController(
+        activity,
+        client.value!!,
+        session.value!!.person,
+    )
 }
 
 
@@ -36,18 +51,31 @@ fun CommunicationInternetClientContent(client: MutableState<TaskClient?>) {
     val serverAddress = remember { mutableStateOf(DEFAULT_SERVER_ADDRESS) }
     val serverPort = remember { mutableIntStateOf(DEFAULT_SERVER_PORT) }
 
-    Column {
+    Column(
+        modifier = Modifier.fillMaxSize(),
+        verticalArrangement = Arrangement.Center,
+        horizontalAlignment = Alignment.CenterHorizontally
+    ) {
+        // title
+        Text(
+            text = "Connection",
+            fontSize = 32.sp
+        )
+
+        // separator
+        Spacer(modifier = Modifier.height(24.dp))
+
         // server address
         TextField(
             value = serverAddress.value,
-            onValueChange = { text ->
-                serverAddress.value = text
-            }
+            placeholder = { Text("server IP") },
+            onValueChange = { text -> serverAddress.value = text }
         )
 
         // server port
         TextField(
             value = serverPort.intValue.toString(),
+            placeholder = { Text("server port") },
             keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number),
             onValueChange = { text ->
                 val port = text.toInt()
@@ -57,6 +85,10 @@ fun CommunicationInternetClientContent(client: MutableState<TaskClient?>) {
             }
         )
 
+        // separator
+        Spacer(modifier = Modifier.height(24.dp))
+
+        // connect button
         Button(onClick = {
             // TODO(Faraphel): check if the server is reachable
             client.value = TaskClient(serverAddress.value, serverPort.intValue)

app/src/main/java/com/faraphel/tasks_valider/ui/screen/communication/internet/server.kt

@@ -27,7 +27,7 @@ import com.faraphel.tasks_valider.database.entities.ClassEntity
 import com.faraphel.tasks_valider.database.entities.PersonEntity
 import com.faraphel.tasks_valider.database.entities.SessionEntity
 import com.faraphel.tasks_valider.database.populateSubjectSessionPersonTest
-import com.faraphel.tasks_valider.ui.screen.authentification.AuthentificationServerScreen
+import com.faraphel.tasks_valider.ui.screen.authentication.AuthenticationServerScreen
 import com.faraphel.tasks_valider.ui.screen.communication.DEFAULT_SERVER_PORT
 import com.faraphel.tasks_valider.ui.screen.communication.RANGE_SERVER_PORT
 import com.faraphel.tasks_valider.ui.screen.task.TaskSessionController
@@ -37,7 +37,6 @@ import java.time.Instant
 /**
  * Screen for the host to configure the server
  */
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun CommunicationInternetServerScreen(
     activity: Activity,
@@ -52,7 +51,7 @@ fun CommunicationInternetServerScreen(
     NavHost(navController = controller, startDestination = "authentication") {
         composable("authentication") {
             // if the admin person is not created, prompt the user for the admin information
-            if (adminPersonEntityRaw.value == null) AuthentificationServerScreen(adminPersonEntityRaw)
+            if (adminPersonEntityRaw.value == null) AuthenticationServerScreen(adminPersonEntityRaw)
             else controller.navigate("configuration")
         }
         composable("configuration") {

app/src/main/java/com/faraphel/tasks_valider/ui/screen/communication/selection.kt

@@ -33,7 +33,6 @@ import com.faraphel.tasks_valider.ui.screen.communication.wifiP2p.CommunicationW
  * @param activity: The activity that hosts the communication screen.
  * @param database: the database.
  */
-@RequiresApi(Build.VERSION_CODES.O)
 @Composable
 fun CommunicationModeSelectionScreen(activity: Activity, database: TaskDatabase) {
     val controller = rememberNavController()

app/src/main/java/com/faraphel/tasks_valider/ui/screen/task/quick_validation.kt

@@ -66,7 +66,7 @@ fun quickValidation(
     }
 
     // requests all the persons
-    val allPersons = client.personApi.getAll()
+    val allPersons = client.entities.person.getAll()
     // get the person with the matching card
     val person = allPersons.firstOrNull { person -> person.cardId == cardId }
 
@@ -79,19 +79,19 @@ fun quickValidation(
     }
 
     // requests all the relation persons - subjects
-    val allRelationsPersonSubject = client.relationPersonSessionSubjectApi.getAll()
+    val allRelationsPersonSubject = client.entities.relationPersonSessionSubject.getAll()
     // get the corresponding relation
     val relationPersonSubject = allRelationsPersonSubject.first { relation -> relation.studentId == person.id }
 
     // requests all the tasks
-    val allTasks = client.taskApi.getAll()
+    val allTasks = client.entities.task.getAll()
     // get the corresponding tasks
     val tasks = allTasks
         .filter { task -> task.subjectId == relationPersonSubject.subjectId }
         .sortedBy { task -> task.order }
 
     // requests all the validations
-    val allValidations = client.validationApi.getAll()
+    val allValidations = client.entities.validation.getAll()
     // get the corresponding relation
     val validations = allValidations.filter { validation -> validation.studentId == person.id }
 
@@ -112,7 +112,7 @@ fun quickValidation(
     }
 
     // create a new validation on the server
-    client.validationApi.save(
+    client.entities.validation.save(
         ValidationEntity(
             teacherId=user.id,
             studentId=person.id,

app/src/main/java/com/faraphel/tasks_valider/ui/screen/task/session.kt

@@ -1,13 +1,8 @@
 package com.faraphel.tasks_valider.ui.screen.task
 
 import android.app.Activity
-import android.app.Activity.RESULT_OK
-import android.content.Intent
-import android.os.Environment
 import android.util.Log
 import android.widget.Toast
-import androidx.activity.result.ActivityResultLauncher
-import androidx.activity.result.contract.ActivityResultContracts
 import androidx.compose.foundation.layout.*
 import androidx.compose.material3.Button
 import androidx.compose.material3.Text
@@ -125,7 +120,7 @@ fun refreshStudents(
 ) {
     try {
         // try to get all the persons in that session
-        students.value = client.personApi.getAll()
+        students.value = client.entities.person.getAll()
     } catch (exception: Exception) {
         // in case of error, show a message
         return activity.runOnUiThread {
@@ -141,12 +136,12 @@ fun exportToFile(
     client: TaskClient,
 ) {
     // get all the values to export
-    val allPersons = client.personApi.getAll()
+    val allPersons = client.entities.person.getAll()
     val allStudents = allPersons.filter { student -> student.role == TaskRole.STUDENT }
-    val allRelationsStudentSessionSubject = client.relationPersonSessionSubjectApi.getAll()
-    val allSubjects = client.subjectApi.getAll()
-    val allTasks = client.taskApi.getAll()
-    val allValidations = client.validationApi.getAll()
+    val allRelationsStudentSessionSubject = client.entities.relationPersonSessionSubject.getAll()
+    val allSubjects = client.entities.subject.getAll()
+    val allTasks = client.entities.task.getAll()
+    val allValidations = client.entities.validation.getAll()
 
     // for each student
 

app/src/main/java/com/faraphel/tasks_valider/ui/screen/task/student.kt

@@ -125,7 +125,7 @@ fun refreshTasksValidations(
     validations: MutableState<List<ValidationEntity>?>,
 ) {
     // try to obtain the list of subject
-    val allRelationsPersonSessionSubject = client.relationPersonSessionSubjectApi.getAll()
+    val allRelationsPersonSessionSubject = client.entities.relationPersonSessionSubject.getAll()
     // get the subject that the student is using
     val relationPersonSessionSubject = allRelationsPersonSessionSubject.firstOrNull { relation ->
         relation.studentId == student.id
@@ -136,7 +136,7 @@ fun refreshTasksValidations(
         return activity.runOnUiThread { Toast.makeText(activity, "No subject assigned", Toast.LENGTH_LONG).show() }
 
     // try to obtain the list of tasks
-    val allTasks = client.taskApi.getAll()
+    val allTasks = client.entities.task.getAll()
 
     // get the tasks that are linked to this subject
     tasks.value = allTasks
@@ -144,7 +144,7 @@ fun refreshTasksValidations(
         .sortedBy { task -> task.order }
 
     // try to obtain the list of validations
-    val allValidations = client.validationApi.getAll()
+    val allValidations = client.entities.validation.getAll()
     // filter only the interesting validations
     validations.value = allValidations.filter { validation ->
         validation.studentId == student.id &&
@@ -156,8 +156,8 @@ fun refreshTasksValidations(
 fun updateValidation(client: TaskClient, checked: Boolean, validation: ValidationEntity) {
     if (checked)
         // if the validation is not set, create it
-        client.validationApi.save(validation)
+        client.entities.validation.save(validation)
     else
         // if the validation is set, delete it
-        client.validationApi.delete(validation)
+        client.entities.validation.delete(validation)
 }

app/src/main/java/com/faraphel/tasks_valider/utils/json.kt

@@ -8,4 +8,5 @@ import java.time.Instant
 
 val parser: Gson = GsonBuilder()
     .registerTypeAdapter(Instant::class.java, InstantConverter())
+    .excludeFieldsWithoutExposeAnnotation()
     .create()