moved debug related functions

android/app/src/main/kotlin/deckers/thibault/aves/MainActivity.kt

@@ -41,6 +41,7 @@ class MainActivity : FlutterActivity() {
         MethodChannel(messenger, ImageFileHandler.CHANNEL).setMethodCallHandler(ImageFileHandler(this))
         MethodChannel(messenger, MetadataHandler.CHANNEL).setMethodCallHandler(MetadataHandler(this))
         MethodChannel(messenger, StorageHandler.CHANNEL).setMethodCallHandler(StorageHandler(this))
+        MethodChannel(messenger, DebugHandler.CHANNEL).setMethodCallHandler(DebugHandler(this))
 
         StreamsChannel(messenger, ImageByteStreamHandler.CHANNEL).setStreamHandlerFactory { args -> ImageByteStreamHandler(this, args) }
         StreamsChannel(messenger, ImageOpStreamHandler.CHANNEL).setStreamHandlerFactory { args -> ImageOpStreamHandler(this, args) }

android/app/src/main/kotlin/deckers/thibault/aves/channel/calls/AppAdapterHandler.kt

@@ -29,7 +29,6 @@ class AppAdapterHandler(private val context: Context) : MethodCallHandler {
         when (call.method) {
             "getAppIcon" -> GlobalScope.launch { getAppIcon(call, Coresult(result)) }
             "getAppNames" -> GlobalScope.launch { getAppNames(Coresult(result)) }
-            "getEnv" -> result.success(System.getenv())
             "edit" -> {
                 val title = call.argument<String>("title")
                 val uri = call.argument<String>("uri")?.let { Uri.parse(it) }

android/app/src/main/kotlin/deckers/thibault/aves/channel/calls/DebugHandler.kt

@@ -0,0 +1,222 @@
+package deckers.thibault.aves.channel.calls
+
+import android.content.ContentResolver
+import android.content.ContentUris
+import android.content.Context
+import android.database.Cursor
+import android.graphics.BitmapFactory
+import android.net.Uri
+import android.os.Build
+import android.provider.MediaStore
+import android.util.Log
+import androidx.exifinterface.media.ExifInterface
+import com.drew.imaging.ImageMetadataReader
+import com.drew.metadata.file.FileTypeDirectory
+import deckers.thibault.aves.metadata.ExifInterfaceHelper
+import deckers.thibault.aves.metadata.MediaMetadataRetrieverHelper
+import deckers.thibault.aves.utils.LogUtils
+import deckers.thibault.aves.utils.MimeTypes.isImage
+import deckers.thibault.aves.utils.MimeTypes.isSupportedByExifInterface
+import deckers.thibault.aves.utils.MimeTypes.isSupportedByMetadataExtractor
+import deckers.thibault.aves.utils.MimeTypes.isVideo
+import deckers.thibault.aves.utils.StorageUtils
+import io.flutter.plugin.common.MethodCall
+import io.flutter.plugin.common.MethodChannel
+import io.flutter.plugin.common.MethodChannel.MethodCallHandler
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+import java.io.IOException
+import java.util.*
+
+class DebugHandler(private val context: Context) : MethodCallHandler {
+    override fun onMethodCall(call: MethodCall, result: MethodChannel.Result) {
+        when (call.method) {
+            "getEnv" -> result.success(System.getenv())
+            "getBitmapFactoryInfo" -> GlobalScope.launch { getBitmapFactoryInfo(call, Coresult(result)) }
+            "getContentResolverMetadata" -> GlobalScope.launch { getContentResolverMetadata(call, Coresult(result)) }
+            "getExifInterfaceMetadata" -> GlobalScope.launch { getExifInterfaceMetadata(call, Coresult(result)) }
+            "getMediaMetadataRetrieverMetadata" -> GlobalScope.launch { getMediaMetadataRetrieverMetadata(call, Coresult(result)) }
+            "getMetadataExtractorSummary" -> GlobalScope.launch { getMetadataExtractorSummary(call, Coresult(result)) }
+            else -> result.notImplemented()
+        }
+    }
+
+    private fun getBitmapFactoryInfo(call: MethodCall, result: MethodChannel.Result) {
+        val uri = call.argument<String>("uri")?.let { Uri.parse(it) }
+        if (uri == null) {
+            result.error("getBitmapDecoderInfo-args", "failed because of missing arguments", null)
+            return
+        }
+
+        val metadataMap = HashMap<String, String>()
+        try {
+            StorageUtils.openInputStream(context, uri)?.use { input ->
+                val options = BitmapFactory.Options().apply {
+                    inJustDecodeBounds = true
+                }
+                BitmapFactory.decodeStream(input, null, options)
+                options.outMimeType?.let { metadataMap["MimeType"] = it }
+                options.outWidth.takeIf { it >= 0 }?.let { metadataMap["Width"] = it.toString() }
+                options.outHeight.takeIf { it >= 0 }?.let { metadataMap["Height"] = it.toString() }
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                    options.outColorSpace?.let { metadataMap["ColorSpace"] = it.toString() }
+                    options.outConfig?.let { metadataMap["Config"] = it.toString() }
+                }
+            }
+        } catch (e: IOException) {
+            // ignore
+        }
+        result.success(metadataMap)
+    }
+
+    private fun getContentResolverMetadata(call: MethodCall, result: MethodChannel.Result) {
+        val mimeType = call.argument<String>("mimeType")
+        val uri = call.argument<String>("uri")?.let { Uri.parse(it) }
+        if (mimeType == null || uri == null) {
+            result.error("getContentResolverMetadata-args", "failed because of missing arguments", null)
+            return
+        }
+
+        var contentUri: Uri = uri
+        if (uri.scheme == ContentResolver.SCHEME_CONTENT && MediaStore.AUTHORITY.equals(uri.host, ignoreCase = true)) {
+            try {
+                val id = ContentUris.parseId(uri)
+                contentUri = when {
+                    isImage(mimeType) -> ContentUris.withAppendedId(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, id)
+                    isVideo(mimeType) -> ContentUris.withAppendedId(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, id)
+                    else -> uri
+                }
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                    contentUri = MediaStore.setRequireOriginal(contentUri)
+                }
+            } catch (e: NumberFormatException) {
+                // ignore
+            }
+        }
+
+        val cursor = context.contentResolver.query(contentUri, null, null, null, null)
+        if (cursor != null && cursor.moveToFirst()) {
+            val metadataMap = HashMap<String, Any?>()
+            val columnCount = cursor.columnCount
+            val columnNames = cursor.columnNames
+            for (i in 0 until columnCount) {
+                val key = columnNames[i]
+                try {
+                    metadataMap[key] = when (cursor.getType(i)) {
+                        Cursor.FIELD_TYPE_NULL -> null
+                        Cursor.FIELD_TYPE_INTEGER -> cursor.getLong(i)
+                        Cursor.FIELD_TYPE_FLOAT -> cursor.getFloat(i)
+                        Cursor.FIELD_TYPE_STRING -> cursor.getString(i)
+                        Cursor.FIELD_TYPE_BLOB -> cursor.getBlob(i)
+                        else -> null
+                    }
+                } catch (e: Exception) {
+                    Log.w(LOG_TAG, "failed to get value for key=$key", e)
+                }
+            }
+            cursor.close()
+            result.success(metadataMap)
+        } else {
+            result.error("getContentResolverMetadata-null", "failed to get cursor for contentUri=$contentUri", null)
+        }
+    }
+
+    private fun getExifInterfaceMetadata(call: MethodCall, result: MethodChannel.Result) {
+        val mimeType = call.argument<String>("mimeType")
+        val uri = call.argument<String>("uri")?.let { Uri.parse(it) }
+        val sizeBytes = call.argument<Number>("sizeBytes")?.toLong()
+        if (mimeType == null || uri == null) {
+            result.error("getExifInterfaceMetadata-args", "failed because of missing arguments", null)
+            return
+        }
+
+        val metadataMap = HashMap<String, String?>()
+        if (isSupportedByExifInterface(mimeType, sizeBytes, strict = false)) {
+            try {
+                StorageUtils.openInputStream(context, uri)?.use { input ->
+                    val exif = ExifInterface(input)
+                    for (tag in ExifInterfaceHelper.allTags.keys.filter { exif.hasAttribute(it) }) {
+                        metadataMap[tag] = exif.getAttribute(tag)
+                    }
+                }
+            } catch (e: Exception) {
+                // ExifInterface initialization can fail with a RuntimeException
+                // caused by an internal MediaMetadataRetriever failure
+                result.error("getExifInterfaceMetadata-failure", "failed to get exif for uri=$uri", e.message)
+                return
+            }
+        }
+        result.success(metadataMap)
+    }
+
+    private fun getMediaMetadataRetrieverMetadata(call: MethodCall, result: MethodChannel.Result) {
+        val uri = call.argument<String>("uri")?.let { Uri.parse(it) }
+        if (uri == null) {
+            result.error("getMediaMetadataRetrieverMetadata-args", "failed because of missing arguments", null)
+            return
+        }
+
+        val metadataMap = HashMap<String, String>()
+        val retriever = StorageUtils.openMetadataRetriever(context, uri)
+        if (retriever != null) {
+            try {
+                for ((code, name) in MediaMetadataRetrieverHelper.allKeys) {
+                    retriever.extractMetadata(code)?.let { metadataMap[name] = it }
+                }
+            } catch (e: Exception) {
+                // ignore
+            } finally {
+                // cannot rely on `MediaMetadataRetriever` being `AutoCloseable` on older APIs
+                retriever.release()
+            }
+        }
+        result.success(metadataMap)
+    }
+
+    private fun getMetadataExtractorSummary(call: MethodCall, result: MethodChannel.Result) {
+        val mimeType = call.argument<String>("mimeType")
+        val uri = call.argument<String>("uri")?.let { Uri.parse(it) }
+        val sizeBytes = call.argument<Number>("sizeBytes")?.toLong()
+        if (mimeType == null || uri == null) {
+            result.error("getMetadataExtractorSummary-args", "failed because of missing arguments", null)
+            return
+        }
+
+        val metadataMap = HashMap<String, String>()
+        if (isSupportedByMetadataExtractor(mimeType, sizeBytes)) {
+            try {
+                StorageUtils.openInputStream(context, uri)?.use { input ->
+                    val metadata = ImageMetadataReader.readMetadata(input, sizeBytes ?: -1)
+                    metadataMap["mimeType"] = metadata.getDirectoriesOfType(FileTypeDirectory::class.java).joinToString { dir ->
+                        if (dir.containsTag(FileTypeDirectory.TAG_DETECTED_FILE_MIME_TYPE)) {
+                            dir.getString(FileTypeDirectory.TAG_DETECTED_FILE_MIME_TYPE)
+                        } else ""
+                    }
+                    metadataMap["typeName"] = metadata.getDirectoriesOfType(FileTypeDirectory::class.java).joinToString { dir ->
+                        if (dir.containsTag(FileTypeDirectory.TAG_DETECTED_FILE_TYPE_NAME)) {
+                            dir.getString(FileTypeDirectory.TAG_DETECTED_FILE_TYPE_NAME)
+                        } else ""
+                    }
+                    for (dir in metadata.directories) {
+                        val dirName = dir.name ?: ""
+                        var index = 0
+                        while (metadataMap.containsKey("$dirName ($index)")) index++
+                        var value = "${dir.tagCount} tags"
+                        dir.parent?.let { value += ", parent: ${it.name}" }
+                        metadataMap["$dirName ($index)"] = value
+                    }
+                }
+            } catch (e: Exception) {
+                Log.w(LOG_TAG, "failed to get metadata by metadata-extractor for uri=$uri", e)
+            } catch (e: NoClassDefFoundError) {
+                Log.w(LOG_TAG, "failed to get metadata by metadata-extractor for uri=$uri", e)
+            }
+        }
+        result.success(metadataMap)
+    }
+
+    companion object {
+        private val LOG_TAG = LogUtils.createTag(DebugHandler::class.java)
+        const val CHANNEL = "deckers.thibault/aves/debug"
+    }
+}

android/app/src/main/kotlin/deckers/thibault/aves/channel/calls/MetadataHandler.kt

@@ -1,14 +1,8 @@
 package deckers.thibault.aves.channel.calls
 
-import android.content.ContentResolver
-import android.content.ContentUris
 import android.content.Context
-import android.database.Cursor
-import android.graphics.BitmapFactory
 import android.media.MediaMetadataRetriever
 import android.net.Uri
-import android.os.Build
-import android.provider.MediaStore
 import android.util.Log
 import androidx.exifinterface.media.ExifInterface
 import com.adobe.internal.xmp.XMPException
@@ -25,7 +19,6 @@ import com.drew.metadata.file.FileTypeDirectory
 import com.drew.metadata.gif.GifAnimationDirectory
 import com.drew.metadata.webp.WebpDirectory
 import com.drew.metadata.xmp.XmpDirectory
-import deckers.thibault.aves.metadata.ExifInterfaceHelper
 import deckers.thibault.aves.metadata.ExifInterfaceHelper.describeAll
 import deckers.thibault.aves.metadata.ExifInterfaceHelper.getSafeDateMillis
 import deckers.thibault.aves.metadata.ExifInterfaceHelper.getSafeDouble
@@ -51,7 +44,6 @@ import deckers.thibault.aves.utils.BitmapUtils
 import deckers.thibault.aves.utils.BitmapUtils.getBytes
 import deckers.thibault.aves.utils.LogUtils
 import deckers.thibault.aves.utils.MimeTypes
-import deckers.thibault.aves.utils.MimeTypes.isImage
 import deckers.thibault.aves.utils.MimeTypes.isMultimedia
 import deckers.thibault.aves.utils.MimeTypes.isSupportedByExifInterface
 import deckers.thibault.aves.utils.MimeTypes.isSupportedByMetadataExtractor
@@ -63,7 +55,6 @@ import io.flutter.plugin.common.MethodChannel
 import io.flutter.plugin.common.MethodChannel.MethodCallHandler
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
-import java.io.IOException
 import java.util.*
 import kotlin.math.roundToLong
 
@@ -73,11 +64,6 @@ class MetadataHandler(private val context: Context) : MethodCallHandler {
             "getAllMetadata" -> GlobalScope.launch { getAllMetadata(call, Coresult(result)) }
             "getCatalogMetadata" -> GlobalScope.launch { getCatalogMetadata(call, Coresult(result)) }
             "getOverlayMetadata" -> GlobalScope.launch { getOverlayMetadata(call, Coresult(result)) }
-            "getContentResolverMetadata" -> GlobalScope.launch { getContentResolverMetadata(call, Coresult(result)) }
-            "getExifInterfaceMetadata" -> GlobalScope.launch { getExifInterfaceMetadata(call, Coresult(result)) }
-            "getMediaMetadataRetrieverMetadata" -> GlobalScope.launch { getMediaMetadataRetrieverMetadata(call, Coresult(result)) }
-            "getBitmapFactoryInfo" -> GlobalScope.launch { getBitmapFactoryInfo(call, Coresult(result)) }
-            "getMetadataExtractorSummary" -> GlobalScope.launch { getMetadataExtractorSummary(call, Coresult(result)) }
             "getEmbeddedPictures" -> GlobalScope.launch { getEmbeddedPictures(call, Coresult(result)) }
             "getExifThumbnails" -> GlobalScope.launch { getExifThumbnails(call, Coresult(result)) }
             "getXmpThumbnails" -> GlobalScope.launch { getXmpThumbnails(call, Coresult(result)) }
@@ -446,180 +432,6 @@ class MetadataHandler(private val context: Context) : MethodCallHandler {
         result.success(metadataMap)
     }
 
-    private fun getContentResolverMetadata(call: MethodCall, result: MethodChannel.Result) {
-        val mimeType = call.argument<String>("mimeType")
-        val uri = call.argument<String>("uri")?.let { Uri.parse(it) }
-        if (mimeType == null || uri == null) {
-            result.error("getContentResolverMetadata-args", "failed because of missing arguments", null)
-            return
-        }
-
-        var contentUri: Uri = uri
-        if (uri.scheme == ContentResolver.SCHEME_CONTENT && MediaStore.AUTHORITY.equals(uri.host, ignoreCase = true)) {
-            try {
-                val id = ContentUris.parseId(uri)
-                contentUri = when {
-                    isImage(mimeType) -> ContentUris.withAppendedId(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, id)
-                    isVideo(mimeType) -> ContentUris.withAppendedId(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, id)
-                    else -> uri
-                }
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
-                    contentUri = MediaStore.setRequireOriginal(contentUri)
-                }
-            } catch (e: NumberFormatException) {
-                // ignore
-            }
-        }
-
-        val cursor = context.contentResolver.query(contentUri, null, null, null, null)
-        if (cursor != null && cursor.moveToFirst()) {
-            val metadataMap = HashMap<String, Any?>()
-            val columnCount = cursor.columnCount
-            val columnNames = cursor.columnNames
-            for (i in 0 until columnCount) {
-                val key = columnNames[i]
-                try {
-                    metadataMap[key] = when (cursor.getType(i)) {
-                        Cursor.FIELD_TYPE_NULL -> null
-                        Cursor.FIELD_TYPE_INTEGER -> cursor.getLong(i)
-                        Cursor.FIELD_TYPE_FLOAT -> cursor.getFloat(i)
-                        Cursor.FIELD_TYPE_STRING -> cursor.getString(i)
-                        Cursor.FIELD_TYPE_BLOB -> cursor.getBlob(i)
-                        else -> null
-                    }
-                } catch (e: Exception) {
-                    Log.w(LOG_TAG, "failed to get value for key=$key", e)
-                }
-            }
-            cursor.close()
-            result.success(metadataMap)
-        } else {
-            result.error("getContentResolverMetadata-null", "failed to get cursor for contentUri=$contentUri", null)
-        }
-    }
-
-    private fun getExifInterfaceMetadata(call: MethodCall, result: MethodChannel.Result) {
-        val mimeType = call.argument<String>("mimeType")
-        val uri = call.argument<String>("uri")?.let { Uri.parse(it) }
-        val sizeBytes = call.argument<Number>("sizeBytes")?.toLong()
-        if (mimeType == null || uri == null) {
-            result.error("getExifInterfaceMetadata-args", "failed because of missing arguments", null)
-            return
-        }
-
-        val metadataMap = HashMap<String, String?>()
-        if (isSupportedByExifInterface(mimeType, sizeBytes, strict = false)) {
-            try {
-                StorageUtils.openInputStream(context, uri)?.use { input ->
-                    val exif = ExifInterface(input)
-                    for (tag in ExifInterfaceHelper.allTags.keys.filter { exif.hasAttribute(it) }) {
-                        metadataMap[tag] = exif.getAttribute(tag)
-                    }
-                }
-            } catch (e: Exception) {
-                // ExifInterface initialization can fail with a RuntimeException
-                // caused by an internal MediaMetadataRetriever failure
-                result.error("getExifInterfaceMetadata-failure", "failed to get exif for uri=$uri", e.message)
-                return
-            }
-        }
-        result.success(metadataMap)
-    }
-
-    private fun getMediaMetadataRetrieverMetadata(call: MethodCall, result: MethodChannel.Result) {
-        val uri = call.argument<String>("uri")?.let { Uri.parse(it) }
-        if (uri == null) {
-            result.error("getMediaMetadataRetrieverMetadata-args", "failed because of missing arguments", null)
-            return
-        }
-
-        val metadataMap = HashMap<String, String>()
-        val retriever = StorageUtils.openMetadataRetriever(context, uri)
-        if (retriever != null) {
-            try {
-                for ((code, name) in MediaMetadataRetrieverHelper.allKeys) {
-                    retriever.extractMetadata(code)?.let { metadataMap[name] = it }
-                }
-            } catch (e: Exception) {
-                // ignore
-            } finally {
-                // cannot rely on `MediaMetadataRetriever` being `AutoCloseable` on older APIs
-                retriever.release()
-            }
-        }
-        result.success(metadataMap)
-    }
-
-    private fun getBitmapFactoryInfo(call: MethodCall, result: MethodChannel.Result) {
-        val uri = call.argument<String>("uri")?.let { Uri.parse(it) }
-        if (uri == null) {
-            result.error("getBitmapDecoderInfo-args", "failed because of missing arguments", null)
-            return
-        }
-
-        val metadataMap = HashMap<String, String>()
-        try {
-            StorageUtils.openInputStream(context, uri)?.use { input ->
-                val options = BitmapFactory.Options().apply {
-                    inJustDecodeBounds = true
-                }
-                BitmapFactory.decodeStream(input, null, options)
-                options.outMimeType?.let { metadataMap["MimeType"] = it }
-                options.outWidth.takeIf { it >= 0 }?.let { metadataMap["Width"] = it.toString() }
-                options.outHeight.takeIf { it >= 0 }?.let { metadataMap["Height"] = it.toString() }
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-                    options.outColorSpace?.let { metadataMap["ColorSpace"] = it.toString() }
-                    options.outConfig?.let { metadataMap["Config"] = it.toString() }
-                }
-            }
-        } catch (e: IOException) {
-            // ignore
-        }
-        result.success(metadataMap)
-    }
-
-    private fun getMetadataExtractorSummary(call: MethodCall, result: MethodChannel.Result) {
-        val mimeType = call.argument<String>("mimeType")
-        val uri = call.argument<String>("uri")?.let { Uri.parse(it) }
-        val sizeBytes = call.argument<Number>("sizeBytes")?.toLong()
-        if (mimeType == null || uri == null) {
-            result.error("getMetadataExtractorSummary-args", "failed because of missing arguments", null)
-            return
-        }
-
-        val metadataMap = HashMap<String, String>()
-        if (isSupportedByMetadataExtractor(mimeType, sizeBytes)) {
-            try {
-                StorageUtils.openInputStream(context, uri)?.use { input ->
-                    val metadata = ImageMetadataReader.readMetadata(input, sizeBytes ?: -1)
-                    metadataMap["mimeType"] = metadata.getDirectoriesOfType(FileTypeDirectory::class.java).joinToString { dir ->
-                        if (dir.containsTag(FileTypeDirectory.TAG_DETECTED_FILE_MIME_TYPE)) {
-                            dir.getString(FileTypeDirectory.TAG_DETECTED_FILE_MIME_TYPE)
-                        } else ""
-                    }
-                    metadataMap["typeName"] = metadata.getDirectoriesOfType(FileTypeDirectory::class.java).joinToString { dir ->
-                        if (dir.containsTag(FileTypeDirectory.TAG_DETECTED_FILE_TYPE_NAME)) {
-                            dir.getString(FileTypeDirectory.TAG_DETECTED_FILE_TYPE_NAME)
-                        } else ""
-                    }
-                    for (dir in metadata.directories) {
-                        val dirName = dir.name ?: ""
-                        var index = 0
-                        while (metadataMap.containsKey("$dirName ($index)")) index++
-                        var value = "${dir.tagCount} tags"
-                        dir.parent?.let { value += ", parent: ${it.name}" }
-                        metadataMap["$dirName ($index)"] = value
-                    }
-                }
-            } catch (e: Exception) {
-                Log.w(LOG_TAG, "failed to get metadata by metadata-extractor for uri=$uri", e)
-            } catch (e: NoClassDefFoundError) {
-                Log.w(LOG_TAG, "failed to get metadata by metadata-extractor for uri=$uri", e)
-            }
-        }
-        result.success(metadataMap)
-    }
-
     private fun getEmbeddedPictures(call: MethodCall, result: MethodChannel.Result) {
         val uri = call.argument<String>("uri")?.let { Uri.parse(it) }
         if (uri == null) {

lib/services/android_app_service.dart

@@ -31,16 +31,6 @@ class AndroidAppService {
     return null;
   }
 
-  static Future<Map> getEnv() async {
-    try {
-      final result = await platform.invokeMethod('getEnv');
-      return result as Map;
-    } on PlatformException catch (e) {
-      debugPrint('getEnv failed with code=${e.code}, exception=${e.message}, details=${e.details}}');
-    }
-    return {};
-  }
-
   static Future<bool> edit(String uri, String mimeType) async {
     try {
       return await platform.invokeMethod('edit', <String, dynamic>{

lib/services/android_debug_service.dart

@@ -0,0 +1,91 @@
+import 'dart:typed_data';
+
+import 'package:aves/model/image_entry.dart';
+import 'package:aves/model/image_metadata.dart';
+import 'package:aves/services/service_policy.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter/services.dart';
+
+class AndroidDebugService {
+  static const platform = MethodChannel('deckers.thibault/aves/debug');
+
+  static Future<Map> getEnv() async {
+    try {
+      final result = await platform.invokeMethod('getEnv');
+      return result as Map;
+    } on PlatformException catch (e) {
+      debugPrint('getEnv failed with code=${e.code}, exception=${e.message}, details=${e.details}}');
+    }
+    return {};
+  }
+
+  static Future<Map> getBitmapFactoryInfo(ImageEntry entry) async {
+    try {
+      // return map with all data available when decoding image bounds with `BitmapFactory`
+      final result = await platform.invokeMethod('getBitmapFactoryInfo', <String, dynamic>{
+        'uri': entry.uri,
+      }) as Map;
+      return result;
+    } on PlatformException catch (e) {
+      debugPrint('getBitmapFactoryInfo failed with code=${e.code}, exception=${e.message}, details=${e.details}');
+    }
+    return {};
+  }
+
+  static Future<Map> getContentResolverMetadata(ImageEntry entry) async {
+    try {
+      // return map with all data available from the content resolver
+      final result = await platform.invokeMethod('getContentResolverMetadata', <String, dynamic>{
+        'mimeType': entry.mimeType,
+        'uri': entry.uri,
+      }) as Map;
+      return result;
+    } on PlatformException catch (e) {
+      debugPrint('getContentResolverMetadata failed with code=${e.code}, exception=${e.message}, details=${e.details}');
+    }
+    return {};
+  }
+
+  static Future<Map> getExifInterfaceMetadata(ImageEntry entry) async {
+    try {
+      // return map with all data available from the `ExifInterface` library
+      final result = await platform.invokeMethod('getExifInterfaceMetadata', <String, dynamic>{
+        'mimeType': entry.mimeType,
+        'uri': entry.uri,
+        'sizeBytes': entry.sizeBytes,
+      }) as Map;
+      return result;
+    } on PlatformException catch (e) {
+      debugPrint('getExifInterfaceMetadata failed with code=${e.code}, exception=${e.message}, details=${e.details}');
+    }
+    return {};
+  }
+
+  static Future<Map> getMediaMetadataRetrieverMetadata(ImageEntry entry) async {
+    try {
+      // return map with all data available from `MediaMetadataRetriever`
+      final result = await platform.invokeMethod('getMediaMetadataRetrieverMetadata', <String, dynamic>{
+        'uri': entry.uri,
+      }) as Map;
+      return result;
+    } on PlatformException catch (e) {
+      debugPrint('getMediaMetadataRetrieverMetadata failed with code=${e.code}, exception=${e.message}, details=${e.details}');
+    }
+    return {};
+  }
+
+  static Future<Map> getMetadataExtractorSummary(ImageEntry entry) async {
+    try {
+      // return map with the mime type and tag count for each directory found by `metadata-extractor`
+      final result = await platform.invokeMethod('getMetadataExtractorSummary', <String, dynamic>{
+        'mimeType': entry.mimeType,
+        'uri': entry.uri,
+        'sizeBytes': entry.sizeBytes,
+      }) as Map;
+      return result;
+    } on PlatformException catch (e) {
+      debugPrint('getMetadataExtractorSummary failed with code=${e.code}, exception=${e.message}, details=${e.details}');
+    }
+    return {};
+  }
+}

lib/services/metadata_service.dart

@@ -80,76 +80,6 @@ class MetadataService {
     return null;
   }
 
-  static Future<Map> getBitmapFactoryInfo(ImageEntry entry) async {
-    try {
-      // return map with all data available when decoding image bounds with `BitmapFactory`
-      final result = await platform.invokeMethod('getBitmapFactoryInfo', <String, dynamic>{
-        'uri': entry.uri,
-      }) as Map;
-      return result;
-    } on PlatformException catch (e) {
-      debugPrint('getBitmapFactoryInfo failed with code=${e.code}, exception=${e.message}, details=${e.details}');
-    }
-    return {};
-  }
-
-  static Future<Map> getContentResolverMetadata(ImageEntry entry) async {
-    try {
-      // return map with all data available from the content resolver
-      final result = await platform.invokeMethod('getContentResolverMetadata', <String, dynamic>{
-        'mimeType': entry.mimeType,
-        'uri': entry.uri,
-      }) as Map;
-      return result;
-    } on PlatformException catch (e) {
-      debugPrint('getContentResolverMetadata failed with code=${e.code}, exception=${e.message}, details=${e.details}');
-    }
-    return {};
-  }
-
-  static Future<Map> getExifInterfaceMetadata(ImageEntry entry) async {
-    try {
-      // return map with all data available from the `ExifInterface` library
-      final result = await platform.invokeMethod('getExifInterfaceMetadata', <String, dynamic>{
-        'mimeType': entry.mimeType,
-        'uri': entry.uri,
-        'sizeBytes': entry.sizeBytes,
-      }) as Map;
-      return result;
-    } on PlatformException catch (e) {
-      debugPrint('getExifInterfaceMetadata failed with code=${e.code}, exception=${e.message}, details=${e.details}');
-    }
-    return {};
-  }
-
-  static Future<Map> getMediaMetadataRetrieverMetadata(ImageEntry entry) async {
-    try {
-      // return map with all data available from `MediaMetadataRetriever`
-      final result = await platform.invokeMethod('getMediaMetadataRetrieverMetadata', <String, dynamic>{
-        'uri': entry.uri,
-      }) as Map;
-      return result;
-    } on PlatformException catch (e) {
-      debugPrint('getMediaMetadataRetrieverMetadata failed with code=${e.code}, exception=${e.message}, details=${e.details}');
-    }
-    return {};
-  }
-
-  static Future<Map> getMetadataExtractorSummary(ImageEntry entry) async {
-    try {
-      // return map with the mime type and tag count for each directory found by `metadata-extractor`
-      final result = await platform.invokeMethod('getMetadataExtractorSummary', <String, dynamic>{
-        'mimeType': entry.mimeType,
-        'uri': entry.uri,
-        'sizeBytes': entry.sizeBytes,
-      }) as Map;
-      return result;
-    } on PlatformException catch (e) {
-      debugPrint('getMetadataExtractorSummary failed with code=${e.code}, exception=${e.message}, details=${e.details}');
-    }
-    return {};
-  }
-
   static Future<List<Uint8List>> getEmbeddedPictures(String uri) async {
     try {
       final result = await platform.invokeMethod('getEmbeddedPictures', <String, dynamic>{

lib/widgets/debug/android_env.dart

@@ -1,6 +1,6 @@
 import 'dart:collection';
 
-import 'package:aves/services/android_app_service.dart';
+import 'package:aves/services/android_debug_service.dart';
 import 'package:aves/widgets/common/identity/aves_expansion_tile.dart';
 import 'package:aves/widgets/fullscreen/info/common.dart';
 import 'package:flutter/material.dart';
@@ -16,7 +16,7 @@ class _DebugAndroidEnvironmentSectionState extends State<DebugAndroidEnvironment
   @override
   void initState() {
     super.initState();
-    _loader = AndroidAppService.getEnv();
+    _loader = AndroidDebugService.getEnv();
   }
 
   @override

lib/widgets/fullscreen/debug/metadata.dart

@@ -2,7 +2,7 @@ import 'dart:collection';
 import 'dart:typed_data';
 
 import 'package:aves/model/image_entry.dart';
-import 'package:aves/services/metadata_service.dart';
+import 'package:aves/services/android_debug_service.dart';
 import 'package:aves/utils/constants.dart';
 import 'package:aves/widgets/common/identity/aves_expansion_tile.dart';
 import 'package:aves/widgets/fullscreen/info/common.dart';
@@ -33,11 +33,11 @@ class _MetadataTabState extends State<MetadataTab> {
   }
 
   void _loadMetadata() {
-    _bitmapFactoryLoader = MetadataService.getBitmapFactoryInfo(entry);
+    _bitmapFactoryLoader = AndroidDebugService.getBitmapFactoryInfo(entry);
-    _contentResolverMetadataLoader = MetadataService.getContentResolverMetadata(entry);
+    _contentResolverMetadataLoader = AndroidDebugService.getContentResolverMetadata(entry);
-    _exifInterfaceMetadataLoader = MetadataService.getExifInterfaceMetadata(entry);
+    _exifInterfaceMetadataLoader = AndroidDebugService.getExifInterfaceMetadata(entry);
-    _mediaMetadataLoader = MetadataService.getMediaMetadataRetrieverMetadata(entry);
+    _mediaMetadataLoader = AndroidDebugService.getMediaMetadataRetrieverMetadata(entry);
-    _metadataExtractorLoader = MetadataService.getMetadataExtractorSummary(entry);
+    _metadataExtractorLoader = AndroidDebugService.getMetadataExtractorSummary(entry);
     setState(() {});
   }