feature/Select PDF and save and select Certificate

.gitignore

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+*.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

app/.gitignore

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+/build

app/build.gradle

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+plugins {
+	id 'com.android.application'
+	id 'org.jetbrains.kotlin.android'
+	id 'kotlin-kapt'
+	id 'androidx.navigation.safeargs.kotlin'
+
+}
+
+android {
+	namespace 'com.demo.electronicsignature'
+	compileSdk 33
+
+	buildFeatures {
+		dataBinding true
+		viewBinding true
+	}
+
+	defaultConfig {
+		applicationId "com.demo.electronicsignature"
+		minSdk 29
+		targetSdk 33
+		versionCode 1
+		versionName "1.0"
+
+		testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+	}
+
+	buildTypes {
+		release {
+			minifyEnabled 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'
+	}
+}
+
+dependencies {
+	def room_version = "2.5.1"
+	def nav_version = "2.5.3"
+	def lifecycle_version = "2.5.1"
+	def lifecycle_extension_version = "2.2.0"
+
+
+
+	implementation 'androidx.core:core-ktx:1.7.0'
+	implementation 'com.itextpdf:itext7-core:7.2.5'
+	implementation 'androidx.appcompat:appcompat:1.6.1'
+	implementation 'com.google.android.material:material:1.8.0'
+	implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+
+	implementation "androidx.room:room-runtime:$room_version"
+	implementation "androidx.room:room-ktx:$room_version"
+	kapt "androidx.room:room-compiler:$room_version"
+
+	implementation "androidx.navigation:navigation-fragment-ktx:$nav_version"
+	implementation "androidx.navigation:navigation-ui-ktx:$nav_version"
+	implementation "androidx.navigation:navigation-dynamic-features-fragment:$nav_version"
+
+
+	implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version"
+	implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version"
+	implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_extension_version"
+
+	implementation 'com.github.barteksc:android-pdf-viewer:3.2.0-beta.1'
+
+	implementation 'com.squareup.picasso:picasso:2.8'
+
+
+	testImplementation 'junit:junit:4.13.2'
+	androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+	androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+}

app/proguard-rules.pro

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+# 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

app/src/androidTest/java/com/demo/electronicsignature/ExampleInstrumentedTest.kt

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+package com.demo.electronicsignature
+
+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.demo.electronicsignature", appContext.packageName)
+  }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+
+    <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:supportsRtl="true"
+        android:theme="@style/Theme.ElectronicSignature"
+        android:name=".App"
+        tools:targetApi="31">
+
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

app/src/main/java/com/demo/electronicsignature/App.kt

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+package com.demo.electronicsignature
+
+import android.app.Application
+import androidx.room.Room
+import com.demo.electronicsignature.data.database.MyDatabase
+import com.demo.electronicsignature.data.database.migration.migration_1_2
+import com.demo.electronicsignature.data.repository.SignatureFileRepositoryImpl
+
+class App: Application() {
+
+		override fun onCreate() {
+				super.onCreate()
+				context = this
+		}
+
+		companion object {
+				lateinit var context: App
+
+				private val roomDatabase by lazy {
+						Room.databaseBuilder(
+								context,
+								MyDatabase::class.java,
+								"database-signatures"
+						)
+							.addMigrations(migration_1_2)
+							.build()
+				}
+
+				private val signatureFileDao by lazy { roomDatabase.signatureFileDao() }
+
+			val signatureFileRepository by lazy { SignatureFileRepositoryImpl(signatureFileDao) }
+
+		}
+}

app/src/main/java/com/demo/electronicsignature/MainActivity.kt

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+package com.demo.electronicsignature
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+
+class MainActivity : AppCompatActivity() {
+
+  override fun onCreate(savedInstanceState: Bundle?) {
+    super.onCreate(savedInstanceState)
+    setContentView(R.layout.activity_main)
+  }
+
+}

app/src/main/java/com/demo/electronicsignature/data/database/MyDatabase.kt

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+package com.demo.electronicsignature.data.database
+
+import androidx.room.Database
+import androidx.room.RoomDatabase
+import androidx.room.TypeConverter
+import androidx.room.TypeConverters
+import com.demo.electronicsignature.data.database.converter.DateConverter
+import com.demo.electronicsignature.data.database.dao.SignatureFileDao
+import com.demo.electronicsignature.data.database.model.SignatureFile
+
+@Database(entities = [SignatureFile::class], version = 2, exportSchema = false)
+@TypeConverters(DateConverter::class)
+abstract class MyDatabase :RoomDatabase() {
+			abstract fun signatureFileDao(): SignatureFileDao
+}

app/src/main/java/com/demo/electronicsignature/data/database/converter/DateConverter.kt

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+package com.demo.electronicsignature.data.database.converter
+
+import androidx.room.TypeConverter
+import java.util.*
+
+class DateConverter {
+
+	@TypeConverter
+	fun toDate(timestamp: Long?): Date? {
+		return if (timestamp == null) null else Date(timestamp)
+	}
+
+	@TypeConverter
+	fun toTimestamp(date: Date?): Long? {
+		return date?.time
+	}
+}

app/src/main/java/com/demo/electronicsignature/data/database/dao/SignatureFileDao.kt

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+package com.demo.electronicsignature.data.database.dao
+
+import androidx.room.*
+import com.demo.electronicsignature.data.database.model.SignatureFile
+
+@Dao
+interface SignatureFileDao {
+
+	@Query("SELECT * FROM signature_file")
+	suspend fun getAll(): List<SignatureFile>
+
+	@Query("SELECT * FROM signature_file WHERE id = :id")
+	suspend fun getById(id: Int): SignatureFile
+
+	@Insert(onConflict = OnConflictStrategy.ABORT)
+	suspend fun insert(signatureFile: SignatureFile)
+
+	@Delete
+	suspend fun delete(signatureFile: SignatureFile)
+
+}

app/src/main/java/com/demo/electronicsignature/data/database/migration/signatureFile.kt

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+package com.demo.electronicsignature.data.database.migration
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+val migration_1_2 = object : Migration(1, 2) {
+		override fun migrate(database: SupportSQLiteDatabase) {
+				database.execSQL("ALTER TABLE signature_file ADD COLUMN registrationDate INTEGER NOT NULL DEFAULT 0")
+		}
+}

app/src/main/java/com/demo/electronicsignature/data/database/model/SignatureFile.kt

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+package com.demo.electronicsignature.data.database.model
+
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import androidx.room.TypeConverter
+import com.demo.electronicsignature.data.database.converter.DateConverter
+import java.util.Date
+
+
+@Entity(tableName = "signature_file")
+data class SignatureFile(
+	@PrimaryKey(autoGenerate = true)
+	var id: Int = 0,
+	var path: String,
+	var registrationDate: Date = Date()
+)

app/src/main/java/com/demo/electronicsignature/data/repository/SignatureFileRepository.kt

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+package com.demo.electronicsignature.data.repository
+
+import com.demo.electronicsignature.data.database.model.SignatureFile
+import java.io.File
+
+interface SignatureFileRepository {
+	suspend fun saveFile(path: String)
+	suspend fun listAll(): List<SignatureFile>
+	suspend fun deleteFile(it: SignatureFile)
+}

app/src/main/java/com/demo/electronicsignature/data/repository/SignatureFileRepositoryImpl.kt

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+package com.demo.electronicsignature.data.repository
+
+import com.demo.electronicsignature.data.database.dao.SignatureFileDao
+import com.demo.electronicsignature.data.database.model.SignatureFile
+import java.io.File
+
+class SignatureFileRepositoryImpl(
+	private val signatureFileDao: SignatureFileDao
+) : SignatureFileRepository {
+	override suspend fun saveFile(path: String) {
+		signatureFileDao.insert(SignatureFile(path = path))
+	}
+
+	override suspend fun listAll(): List<SignatureFile> {
+		return signatureFileDao.getAll()
+	}
+
+	override suspend fun deleteFile(it: SignatureFile) {
+		signatureFileDao.delete(it)
+	}
+}

app/src/main/java/com/demo/electronicsignature/domain/MainScreenViewModel.kt

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+package com.demo.electronicsignature.domain
+
+import android.net.Uri
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+
+class MainScreenViewModel : ViewModel() {
+
+
+	private val _pdfFile : MutableLiveData<Uri> = MutableLiveData()
+	val pdfFile : LiveData<Uri> = _pdfFile
+
+	private val _appStatus : MutableLiveData<AppStatus> = MutableLiveData(AppStatus.EMPTY)
+	val appStatus : LiveData<AppStatus> = _appStatus
+
+	private val _signatureFile : MutableLiveData<Uri> = MutableLiveData()
+	val signatureFile : LiveData<Uri> = _signatureFile
+
+	private var imagePosition : Pair<Float, Float> = Pair(0f, 0f)
+
+	fun registerPdf(uri : Uri) {
+		_pdfFile.value = uri
+		_appStatus.value = AppStatus.PDF_LOADED
+	}
+
+	fun selectSignatureFile(uri:Uri) {
+		_appStatus.value = AppStatus.SIGNATURE_SELECTED
+		_signatureFile.value = uri
+	}
+
+	fun registerImagePosition(x: Float, y: Float) {
+		imagePosition = Pair(x, y)
+	}
+
+	fun signDocument(currentPage: Int) {
+
+	}
+
+	enum class AppStatus {
+		EMPTY, PDF_LOADED, SIGNATURE_SELECTED, SIGNATURE_CREATED
+	}
+}