From e6d7bcb6555b615db6e3399ea71cf7df3e62bc06 Mon Sep 17 00:00:00 2001
From: Andrea Brighi <andrea.brighi8@studio.unibo.it>
Date: Sun, 14 May 2023 17:23:41 +0200
Subject: [PATCH] refactor(app): add CameraViewWithPermission

---
 .../app/ui/common/CameraViewWithPermission.kt | 100 ++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 app/src/main/kotlin/com/intelligentbackpack/app/ui/common/CameraViewWithPermission.kt

diff --git a/app/src/main/kotlin/com/intelligentbackpack/app/ui/common/CameraViewWithPermission.kt b/app/src/main/kotlin/com/intelligentbackpack/app/ui/common/CameraViewWithPermission.kt
new file mode 100644
index 00000000..a6609555
--- /dev/null
+++ b/app/src/main/kotlin/com/intelligentbackpack/app/ui/common/CameraViewWithPermission.kt
@@ -0,0 +1,100 @@
+package com.intelligentbackpack.app.ui.common
+
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.provider.Settings
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.unit.dp
+import androidx.core.content.ContextCompat
+import com.google.accompanist.permissions.ExperimentalPermissionsApi
+import com.google.accompanist.permissions.PermissionRequired
+import com.google.accompanist.permissions.PermissionState
+import com.intelligentbackpack.app.sensor.BarcodeAnalyser
+import com.intelligentbackpack.app.ui.shape.CutOutShape
+
+@OptIn(ExperimentalPermissionsApi::class)
+@Composable
+@androidx.annotation.OptIn(androidx.camera.core.ExperimentalGetImage::class)
+fun CameraViewWithPermission(
+    topBar: @Composable () -> Unit,
+    message: @Composable () -> Unit,
+    barcodeAnalyser: BarcodeAnalyser,
+    permissionState: PermissionState,
+    onBack: () -> Unit,
+    context: Context = LocalContext.current,
+) {
+    Column(
+        verticalArrangement = Arrangement.Top,
+        horizontalAlignment = Alignment.End,
+        modifier = Modifier
+            .fillMaxSize()
+            .background(MaterialTheme.colorScheme.background)
+    ) {
+        PermissionRequired(
+            permissionState = permissionState,
+            permissionNotGrantedContent = {
+                PermissionsDenied(
+                    message = { Text(text = "Can't open camera without permission") },
+                    onBackMessage = { Text(text = "Insert ISBN manually") },
+                    onBack = onBack,
+                    changePermissions = {
+                        permissionState.launchPermissionRequest()
+                    },
+                    changePermissionsMessage = { Text(text = "Enable permission") })
+            },
+            permissionNotAvailableContent = {
+                PermissionsDenied(
+                    message = { Text(text = "Permission not available, please enable it in settings") },
+                    onBackMessage = { Text(text = "Insert ISBN manually") },
+                    onBack = onBack,
+                    changePermissions = {
+                        ContextCompat.startActivity(
+                            context,
+                            Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS).apply {
+                                data = Uri.fromParts(
+                                    "package",
+                                    context.packageName,
+                                    null
+                                )
+                            },
+                            null
+                        )
+                    }
+                ) { Text("Activate permission in settings") }
+            }
+        ) {
+            Box {
+                PreviewViewComposable(
+                    modifier = Modifier.fillMaxSize(),
+                    barcodeAnalyser = barcodeAnalyser,
+                )
+                Surface(
+                    shape = CutOutShape(),
+                    color = Color.Black.copy(alpha = 0.45f),
+                    modifier = Modifier.fillMaxSize()
+                ) { }
+                Column(
+                    modifier = Modifier
+                        .padding(top = 54.dp, start = 32.dp, end = 32.dp, bottom = 54.dp)
+                ) {
+                    topBar()
+                    message()
+                }
+            }
+        }
+    }
+}