essai 1

.gitignore

+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

.idea/.gitignore

+# Default ignored files
+/shelf/
+/workspace.xml

.idea/codeStyles/Project.xml

+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <JetCodeStyleSettings>
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </JetCodeStyleSettings>
+    <codeStyleSettings language="XML">
+      <option name="FORCE_REARRANGE_MODE" value="1" />
+      <indentOptions>
+        <option name="CONTINUATION_INDENT_SIZE" value="4" />
+      </indentOptions>
+      <arrangement>
+        <rules>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:android</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>xmlns:.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:id</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*:name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>name</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>style</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>^$</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>ANDROID_ATTRIBUTE_ORDER</order>
+            </rule>
+          </section>
+          <section>
+            <rule>
+              <match>
+                <AND>
+                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
+                  <XML_NAMESPACE>.*</XML_NAMESPACE>
+                </AND>
+              </match>
+              <order>BY_NAME</order>
+            </rule>
+          </section>
+        </rules>
+      </arrangement>
+    </codeStyleSettings>
+    <codeStyleSettings language="kotlin">
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </codeStyleSettings>
+  </code_scheme>
+</component>
\ No newline at end of file

.idea/codeStyles/codeStyleConfig.xml

+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>
\ No newline at end of file

.idea/compiler.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="17" />
+  </component>
+</project>
\ No newline at end of file

.idea/deploymentTargetDropDown.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="deploymentTargetDropDown">
+    <value>
+      <entry key="LoginActivity">
+        <State>
+          <targetSelectedWithDropDown>
+            <Target>
+              <type value="QUICK_BOOT_TARGET" />
+              <deviceKey>
+                <Key>
+                  <type value="VIRTUAL_DEVICE_PATH" />
+                  <value value="H:\Androidstudio_AVD\avd\Pixel_3a_API_34.avd" />
+                </Key>
+              </deviceKey>
+            </Target>
+          </targetSelectedWithDropDown>
+          <timeTargetWasSelectedWithDropDown value="2024-01-17T20:36:19.481840300Z" />
+        </State>
+      </entry>
+      <entry key="SignupActivity">
+        <State />
+      </entry>
+      <entry key="app">
+        <State />
+      </entry>
+    </value>
+  </component>
+</project>
\ No newline at end of file

.idea/gradle.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveExternalAnnotations" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file

.idea/kotlinc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="KotlinJpsPluginSettings">
+    <option name="version" value="1.9.0" />
+  </component>
+</project>
\ No newline at end of file

.idea/migrations.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectMigrations">
+    <option name="MigrateToGradleLocalJavaHome">
+      <set>
+        <option value="$PROJECT_DIR$" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file

.idea/misc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file

.idea/vcs.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file

app/.gitignore

+/build
\ No newline at end of file

app/build.gradle.kts

+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.jetbrains.kotlin.android)
+    id("com.google.gms.google-services")
+}
+
+android {
+    namespace = "com.example.mobilecomputingapp"
+    compileSdk = 34
+
+    defaultConfig {
+        applicationId = "com.example.mobilecomputingapp"
+        minSdk = 22
+        targetSdk = 34
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+    buildFeatures{
+        viewBinding = true
+    }
+}
+
+dependencies {
+
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.appcompat)
+    implementation(libs.material)
+    implementation(libs.androidx.activity)
+    implementation(libs.androidx.constraintlayout)
+    implementation(libs.firebase.database)
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.androidx.junit)
+    androidTestImplementation(libs.androidx.espresso.core)
+}
\ No newline at end of file

app/google-services.json

+{
+  "project_info": {
+    "project_number": "897141802282",
+    "firebase_url": "https://mobilecomputingapp-47d1b-default-rtdb.firebaseio.com",
+    "project_id": "mobilecomputingapp-47d1b",
+    "storage_bucket": "mobilecomputingapp-47d1b.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:897141802282:android:d22976023dd2da2d32ca53",
+        "android_client_info": {
+          "package_name": "com.example.mobilecomputingapp"
+        }
+      },
+      "oauth_client": [],
+      "api_key": [
+        {
+          "current_key": "AIzaSyBsvQnZuQ67aJ4eGenW0aRCLUpOCp77iAw"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": []
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}
\ No newline at end of file

app/proguard-rules.pro

+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file

app/src/androidTest/java/com/example/mobilecomputingapp/ExampleInstrumentedTest.kt

+package com.example.mobilecomputingapp
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.example.mobilecomputingapp", appContext.packageName)
+    }
+}
\ No newline at end of file

app/src/main/AndroidManifest.xml

+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.MobileComputingApp"
+        tools:targetApi="31">
+        <activity
+            android:name=".LoginActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity
+            android:name=".SignupActivity"
+            android:exported="false" />
+        <activity
+            android:name=".MainActivity"
+            android:exported="false">
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file

app/src/main/java/com/example/mobilecomputingapp/LoginActivity.kt

+package com.example.mobilecomputingapp
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Toast
+import com.example.mobilecomputingapp.databinding.ActivityLoginBinding
+import com.google.firebase.database.DataSnapshot
+import com.google.firebase.database.DatabaseError
+import com.google.firebase.database.DatabaseReference
+import com.google.firebase.database.FirebaseDatabase
+import com.google.firebase.database.ValueEventListener
+import kotlin.math.sign
+
+class LoginActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityLoginBinding
+    private lateinit var firebaseDatabase: FirebaseDatabase
+    private lateinit var databaseReference: DatabaseReference
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivityLoginBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        firebaseDatabase = FirebaseDatabase.getInstance()
+        databaseReference = firebaseDatabase.reference.child("users")
+
+        binding.loginButton.setOnClickListener{
+            val loginUsername = binding.loginUsername.text.toString()
+            val loginPassword = binding.loginPassword.text.toString()
+
+            if(loginUsername.isNotEmpty() && loginPassword.isNotEmpty()){
+                loginUser(loginUsername, loginPassword)
+            } else {
+                Toast.makeText(this@LoginActivity, "All Fields are mandatory !", Toast.LENGTH_SHORT).show()
+
+            }
+        }
+
+        val id = databaseReference.push().key
+        val userData = UserData(id,"test1","test1")
+        databaseReference.child(id!!).setValue(userData)
+
+        binding.signupRedirect.setOnClickListener {
+            startActivity(Intent(this@LoginActivity, SignupActivity::class.java))
+            finish()
+        }
+    }
+
+    private fun loginUser(username: String, password: String){
+        databaseReference.orderByChild("username").equalTo(username).addListenerForSingleValueEvent(object: ValueEventListener{
+            override fun onDataChange(dataSnapshot: DataSnapshot) {
+                if (dataSnapshot.exists()){
+                    for (userSnapshot in dataSnapshot.children){
+                        val userData = userSnapshot.getValue(UserData::class.java)
+
+                        if(userData != null && userData.password == password){
+                            Toast.makeText(this@LoginActivity, "Login Successful", Toast.LENGTH_SHORT).show()
+                            startActivity(Intent(this@LoginActivity, MainActivity::class.java))
+                            finish()
+                            return
+                        }
+                    }
+                }
+                Toast.makeText(this@LoginActivity, "Login Failed", Toast.LENGTH_SHORT).show()
+
+            }
+
+            override fun onCancelled(databaseError: DatabaseError) {
+                Toast.makeText(this@LoginActivity, "Database Error: ${databaseError.message}", Toast.LENGTH_SHORT).show()
+
+            }
+        })
+    }
+}
\ No newline at end of file

app/src/main/java/com/example/mobilecomputingapp/MainActivity.kt

+package com.example.mobilecomputingapp
+
+import android.os.Bundle
+import androidx.activity.enableEdgeToEdge
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+
+class MainActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        enableEdgeToEdge()
+        setContentView(R.layout.activity_main)
+        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
+            insets
+        }
+    }
+}
\ No newline at end of file

app/src/main/java/com/example/mobilecomputingapp/SignupActivity.kt

+package com.example.mobilecomputingapp
+
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.widget.Toast
+import com.example.mobilecomputingapp.databinding.ActivitySignupBinding
+import com.google.firebase.database.DataSnapshot
+import com.google.firebase.database.DatabaseError
+import com.google.firebase.database.DatabaseReference
+import com.google.firebase.database.FirebaseDatabase
+import com.google.firebase.database.ValueEventListener
+
+class SignupActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivitySignupBinding
+    private lateinit var firebaseDatabase: FirebaseDatabase
+    private lateinit var databaseReference: DatabaseReference
+
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        binding = ActivitySignupBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        firebaseDatabase = FirebaseDatabase.getInstance()
+        databaseReference = firebaseDatabase.reference.child("users")
+
+        binding.signupButton.setOnClickListener {
+            val signupUsername = binding.signupUsername.text.toString()
+            val signupPassword = binding.signupPassword.text.toString()
+
+            if(signupUsername.isNotEmpty() && signupPassword.isNotEmpty()){
+                signupUser(signupUsername, signupPassword)
+            } else {
+                Toast.makeText(this@SignupActivity, "All Fields are mandatory !", Toast.LENGTH_SHORT).show()
+
+            }
+        }
+
+        binding.loginRedirect.setOnClickListener {
+            startActivity(Intent(this@SignupActivity, LoginActivity::class.java))
+            finish()
+        }
+
+    }
+
+    private fun signupUser(username: String, password: String){
+        databaseReference.orderByChild("username").equalTo(username).addListenerForSingleValueEvent(object : ValueEventListener{
+            override fun onDataChange(dataSnapshot: DataSnapshot) {
+                if(!dataSnapshot.exists()){
+                    val id = databaseReference.push().key
+                    val userData = UserData(id,username,password)
+                    databaseReference.child(id!!).setValue(userData)
+                    Toast.makeText(this@SignupActivity, "Sign up Successful", Toast.LENGTH_SHORT).show()
+                    startActivity(Intent(this@SignupActivity, LoginActivity::class.java))
+                    finish()
+                } else {
+                    Toast.makeText(this@SignupActivity, "User already exists !", Toast.LENGTH_SHORT).show()
+                }
+            }
+
+            override fun onCancelled(databaseError: DatabaseError) {
+                Toast.makeText(this@SignupActivity, "Database Error: ${databaseError.message}", Toast.LENGTH_SHORT).show()
+
+            }
+        })
+    }
+}
\ No newline at end of file