From d4d1b2720906d17669f4e6673790d5d4bc34c614 Mon Sep 17 00:00:00 2001
From: Arif Dwiyanto <arif.dwiyanto@ubharajaya.ac.id>
Date: Tue, 13 Jan 2026 09:34:37 +0700
Subject: [PATCH] real time location

---
 .idea/gradle.xml                              |   1 +
 .idea/misc.xml                                |   1 -
 README.md                                     |   2 +-
 app/build.gradle.kts                          |   4 +
 app/src/main/AndroidManifest.xml              |   8 +
 .../ubharajaya/sistemakademik/MainActivity.kt | 266 ++++++++++++++++--
 6 files changed, 259 insertions(+), 23 deletions(-)

diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 97f0a8e..639c779 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 74dd639..b2c751a 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
   <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
diff --git a/README.md b/README.md
index 89b45d7..5fbc629 100644
--- a/README.md
+++ b/README.md
@@ -79,5 +79,5 @@ Aplikasi memerlukan izin berikut:
 
 ---
 
-## 📂 Struktur Proyek (Contoh)
+## 📂 Mockup
 ![mockup](Mockup.png)
\ No newline at end of file
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index eb04fe7..7d76378 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -45,11 +45,15 @@ dependencies {
     implementation(libs.androidx.core.ktx)
     implementation(libs.androidx.lifecycle.runtime.ktx)
     implementation(libs.androidx.activity.compose)
+    implementation("androidx.activity:activity-compose:1.9.0")
     implementation(platform(libs.androidx.compose.bom))
     implementation(libs.androidx.compose.ui)
     implementation(libs.androidx.compose.ui.graphics)
     implementation(libs.androidx.compose.ui.tooling.preview)
     implementation(libs.androidx.compose.material3)
+    // Location (GPS)
+    implementation("com.google.android.gms:play-services-location:21.0.1")
+
     testImplementation(libs.junit)
     androidTestImplementation(libs.androidx.junit)
     androidTestImplementation(libs.androidx.espresso.core)
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 6d17b67..4619836 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -2,6 +2,14 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
+    <uses-permission android:name="android.permission.CAMERA"/>
+    <uses-feature
+        android:name="android.hardware.camera"
+        android:required="false" />
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
diff --git a/app/src/main/java/id/ac/ubharajaya/sistemakademik/MainActivity.kt b/app/src/main/java/id/ac/ubharajaya/sistemakademik/MainActivity.kt
index 39554bc..f4d369c 100644
--- a/app/src/main/java/id/ac/ubharajaya/sistemakademik/MainActivity.kt
+++ b/app/src/main/java/id/ac/ubharajaya/sistemakademik/MainActivity.kt
@@ -1,28 +1,109 @@
 package id.ac.ubharajaya.sistemakademik
 
+import android.Manifest
+import android.app.Activity
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.graphics.Bitmap
 import android.os.Bundle
+import android.provider.MediaStore
+import android.util.Base64
+import android.widget.Toast
 import androidx.activity.ComponentActivity
+import androidx.activity.compose.rememberLauncherForActivityResult
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.padding
-import androidx.compose.material3.Scaffold
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.unit.dp
+import androidx.core.content.ContextCompat
+import com.google.android.gms.location.LocationServices
 import id.ac.ubharajaya.sistemakademik.ui.theme.SistemAkademikTheme
+import org.json.JSONObject
+import java.io.ByteArrayOutputStream
+import java.net.HttpURLConnection
+import java.net.URL
+import kotlin.concurrent.thread
+
+/* ================= UTIL ================= */
+
+fun bitmapToBase64(bitmap: Bitmap): String {
+    val outputStream = ByteArrayOutputStream()
+    bitmap.compress(Bitmap.CompressFormat.JPEG, 80, outputStream)
+    return Base64.encodeToString(outputStream.toByteArray(), Base64.NO_WRAP)
+}
+
+fun kirimKeN8n(
+    context: ComponentActivity,
+    latitude: Double,
+    longitude: Double,
+    foto: Bitmap
+) {
+    thread {
+        try {
+            val url = URL("https://n8n-s.pii.or.id/webhook/dcef8a16-d333-4259-a201-bd12ba780761")
+            val conn = url.openConnection() as HttpURLConnection
+
+            conn.requestMethod = "POST"
+            conn.setRequestProperty("Content-Type", "application/json")
+            conn.doOutput = true
+
+            val json = JSONObject().apply {
+                put("latitude", latitude)
+                put("longitude", longitude)
+                put("timestamp", System.currentTimeMillis())
+                put("foto_base64", bitmapToBase64(foto))
+            }
+
+            conn.outputStream.use {
+                it.write(json.toString().toByteArray())
+            }
+
+            val responseCode = conn.responseCode
+
+            context.runOnUiThread {
+                Toast.makeText(
+                    context,
+                    if (responseCode == 200)
+                        "Absensi diterima server"
+                    else
+                        "Absensi ditolak server",
+                    Toast.LENGTH_SHORT
+                ).show()
+            }
+
+            conn.disconnect()
+
+        } catch (e: Exception) {
+            context.runOnUiThread {
+                Toast.makeText(
+                    context,
+                    "Gagal kirim ke server",
+                    Toast.LENGTH_SHORT
+                ).show()
+            }
+        }
+    }
+}
+
+/* ================= ACTIVITY ================= */
 
 class MainActivity : ComponentActivity() {
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         enableEdgeToEdge()
+
         setContent {
             SistemAkademikTheme {
                 Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
-                    Greeting(
-                        name = "Android",
-                        modifier = Modifier.padding(innerPadding)
+                    AbsensiScreen(
+                        modifier = Modifier.padding(innerPadding),
+                        activity = this
                     )
                 }
             }
@@ -30,18 +111,161 @@ class MainActivity : ComponentActivity() {
     }
 }
 
-@Composable
-fun Greeting(name: String, modifier: Modifier = Modifier) {
-    Text(
-        text = "Hello $name!",
-        modifier = modifier
-    )
-}
+/* ================= UI ================= */
 
-@Preview(showBackground = true)
 @Composable
-fun GreetingPreview() {
-    SistemAkademikTheme {
-        Greeting("Android")
+fun AbsensiScreen(
+    modifier: Modifier = Modifier,
+    activity: ComponentActivity
+) {
+    val context = LocalContext.current
+
+    var lokasi by remember { mutableStateOf("Koordinat: -") }
+    var latitude by remember { mutableStateOf<Double?>(null) }
+    var longitude by remember { mutableStateOf<Double?>(null) }
+    var foto by remember { mutableStateOf<Bitmap?>(null) }
+
+    val fusedLocationClient =
+        LocationServices.getFusedLocationProviderClient(context)
+
+    /* ===== Permission Lokasi ===== */
+
+    val locationPermissionLauncher =
+        rememberLauncherForActivityResult(
+            ActivityResultContracts.RequestPermission()
+        ) { granted ->
+            if (granted) {
+
+                if (
+                    ContextCompat.checkSelfPermission(
+                        context,
+                        Manifest.permission.ACCESS_FINE_LOCATION
+                    ) == PackageManager.PERMISSION_GRANTED
+                ) {
+
+                    fusedLocationClient.lastLocation
+                        .addOnSuccessListener { location ->
+                            if (location != null) {
+                                latitude = location.latitude
+                                longitude = location.longitude
+                                lokasi =
+                                    "Lat: ${location.latitude}\nLon: ${location.longitude}"
+                            } else {
+                                lokasi = "Lokasi tidak tersedia"
+                            }
+                        }
+                        .addOnFailureListener {
+                            lokasi = "Gagal mengambil lokasi"
+                        }
+                }
+
+            } else {
+                Toast.makeText(
+                    context,
+                    "Izin lokasi ditolak",
+                    Toast.LENGTH_SHORT
+                ).show()
+            }
+        }
+
+    /* ===== Kamera ===== */
+
+    val cameraLauncher =
+        rememberLauncherForActivityResult(
+            ActivityResultContracts.StartActivityForResult()
+        ) { result ->
+            if (result.resultCode == Activity.RESULT_OK) {
+                val bitmap =
+                    result.data?.extras?.get("data") as? Bitmap
+                if (bitmap != null) {
+                    foto = bitmap
+                    Toast.makeText(
+                        context,
+                        "Foto berhasil diambil",
+                        Toast.LENGTH_SHORT
+                    ).show()
+                }
+            }
+        }
+
+    val cameraPermissionLauncher =
+        rememberLauncherForActivityResult(
+            ActivityResultContracts.RequestPermission()
+        ) { granted ->
+            if (granted) {
+                val intent =
+                    Intent(MediaStore.ACTION_IMAGE_CAPTURE)
+                cameraLauncher.launch(intent)
+            } else {
+                Toast.makeText(
+                    context,
+                    "Izin kamera ditolak",
+                    Toast.LENGTH_SHORT
+                ).show()
+            }
+        }
+
+    /* ===== Request Awal ===== */
+
+    LaunchedEffect(Unit) {
+        locationPermissionLauncher.launch(
+            Manifest.permission.ACCESS_FINE_LOCATION
+        )
     }
-}
\ No newline at end of file
+
+    /* ===== UI ===== */
+
+    Column(
+        modifier = modifier
+            .fillMaxSize()
+            .padding(24.dp),
+        verticalArrangement = Arrangement.Center
+    ) {
+
+        Text(
+            text = "Absensi Akademik",
+            style = MaterialTheme.typography.titleLarge
+        )
+
+        Spacer(modifier = Modifier.height(16.dp))
+
+        Text(text = lokasi)
+
+        Spacer(modifier = Modifier.height(16.dp))
+
+        Button(
+            onClick = {
+                cameraPermissionLauncher.launch(
+                    Manifest.permission.CAMERA
+                )
+            },
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            Text("Ambil Foto")
+        }
+
+        Spacer(modifier = Modifier.height(12.dp))
+
+        Button(
+            onClick = {
+                if (latitude != null && longitude != null && foto != null) {
+                    kirimKeN8n(
+                        activity,
+                        latitude!!,
+                        longitude!!,
+                        foto!!
+                    )
+                } else {
+                    Toast.makeText(
+                        context,
+                        "Lokasi atau foto belum lengkap",
+                        Toast.LENGTH_SHORT
+                    ).show()
+                }
+            },
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            Text("Kirim Absensi")
+        }
+    }
+}