feat: add media permissions and Media Store utility

plugin/src/main/kotlin/com/thelightphone/plugin/LightToolMetadata.kt

@@ -142,6 +142,8 @@ object LightToolPolicy {
         "android.permission.READ_MEDIA_AUDIO",
         "android.permission.ACCESS_FINE_LOCATION",
         "android.permission.ACCESS_COARSE_LOCATION",
+        "android.permission.READ_MEDIA_IMAGES",
+        "android.permission.READ_MEDIA_VIDEO",
         "android.permission.NFC",
     )
 

sdk/client/src/main/kotlin/com/thelightphone/sdk/LightMediaStore.kt

@@ -0,0 +1,91 @@
+package com.thelightphone.sdk
+
+import android.content.ContentUris
+import android.content.Context
+import android.net.Uri
+import android.provider.MediaStore
+import java.io.InputStream
+
+class LightMediaStore internal constructor(private val androidContext: Context) {
+
+    enum class MediaType(internal val mediaStoreValue: Int) {
+        IMAGE(MediaStore.Files.FileColumns.MEDIA_TYPE_IMAGE),
+        VIDEO(MediaStore.Files.FileColumns.MEDIA_TYPE_VIDEO),
+    }
+
+    data class MediaItem(
+        val uri: Uri,
+        val displayName: String,
+        val size: Long,
+        val relativePath: String,
+        val dateTakenMillis: Long?,
+        val mimeType: String,
+        val type: MediaType,
+    )
+
+    fun list(types: Set<MediaType> = setOf(MediaType.IMAGE, MediaType.VIDEO)): List<MediaItem> {
+        require(types.isNotEmpty()) { "types must not be empty" }
+
+        val collection = MediaStore.Files.getContentUri(MediaStore.VOLUME_EXTERNAL)
+        val projection = arrayOf(
+            MediaStore.Files.FileColumns._ID,
+            MediaStore.Files.FileColumns.DISPLAY_NAME,
+            MediaStore.Files.FileColumns.SIZE,
+            MediaStore.Files.FileColumns.DATE_TAKEN,
+            MediaStore.Files.FileColumns.MIME_TYPE,
+            MediaStore.Files.FileColumns.RELATIVE_PATH,
+            MediaStore.Files.FileColumns.MEDIA_TYPE,
+        )
+
+        val typePlaceholders = types.joinToString(",") { "?" }
+        val selection =
+            "${MediaStore.Files.FileColumns.MEDIA_TYPE} IN ($typePlaceholders) AND " +
+                "${MediaStore.Files.FileColumns.RELATIVE_PATH} LIKE ?"
+        val selectionArgs = types.map { it.mediaStoreValue.toString() }.toTypedArray() + "DCIM/%"
+        val sortOrder = "${MediaStore.Files.FileColumns.DATE_TAKEN} DESC"
+
+        val results = mutableListOf<MediaItem>()
+
+        androidContext.contentResolver.query(
+            collection,
+            projection,
+            selection,
+            selectionArgs,
+            sortOrder,
+        )?.use { cursor ->
+            val idCol = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns._ID)
+            val nameCol = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.DISPLAY_NAME)
+            val sizeCol = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.SIZE)
+            val dateCol = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.DATE_TAKEN)
+            val mimeCol = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.MIME_TYPE)
+            val pathCol = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.RELATIVE_PATH)
+            val typeCol = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.MEDIA_TYPE)
+
+            while (cursor.moveToNext()) {
+                val id = cursor.getLong(idCol)
+                val typeValue = cursor.getInt(typeCol)
+                val mediaType = MediaType.entries.firstOrNull { it.mediaStoreValue == typeValue }
+                    ?: continue
+                results += MediaItem(
+                    uri = ContentUris.withAppendedId(collection, id),
+                    displayName = cursor.getString(nameCol).orEmpty(),
+                    size = cursor.getLong(sizeCol),
+                    relativePath = cursor.getString(pathCol).orEmpty(),
+                    dateTakenMillis = if (cursor.isNull(dateCol)) null else cursor.getLong(dateCol),
+                    mimeType = cursor.getString(mimeCol).orEmpty(),
+                    type = mediaType,
+                )
+            }
+        }
+
+        return results
+    }
+
+    fun listImages(): List<MediaItem> = list(setOf(MediaType.IMAGE))
+
+    fun listVideos(): List<MediaItem> = list(setOf(MediaType.VIDEO))
+
+    fun <T> read(item: MediaItem, block: (InputStream) -> T): T? {
+        return androidContext.contentResolver.openInputStream(item.uri)?.use(block)
+    }
+}