Merge branch 'master' of github.com:itinance/react-native-fs

* 'master' of github.com:itinance/react-native-fs:
  Added copyAssetsFileIOS to support asset-library-Files from camera-roll in iOS

Author: itinance

FS.common.js

@@ -274,6 +274,15 @@ var RNFS = {
     return RNFSManager.copyFileAssets(normalizeFilePath(filepath), normalizeFilePath(destPath)).then(() => void 0);
   },
 
+  // iOS only
+  // Copies fotos from asset-library (camera-roll) to a specific location
+  // with a given width or height 
+  // @see: https://developer.apple.com/reference/photos/phimagemanager/1616964-requestimageforasset
+  copyAssetsFileIOS(imageUri: string, destPath: string, width: number, height: number,
+    scale : number = 1.0, compression : number = 1.0, resizeMode : string = 'contain'  ): Promise<string> {
+    return RNFSManager.copyAssetsFileIOS(imageUri, destPath, width, height, scale, compression, resizeMode );
+  },
+
   writeFile(filepath: string, contents: string, encodingOrOptions?: any): Promise<void> {
     var b64;
 

README.md

@@ -381,10 +381,20 @@ Note: On Android copyFile will overwrite `destPath` if it already exists. On iOS
 
 ### `copyFileAssets(filepath: string, destPath: string): Promise<void>`
 
-Copies the file at `filepath ` in the Android app's assets folder and copies it to the given `destPath ` path.
+Copies the file at `filepath` in the Android app's assets folder and copies it to the given `destPath ` path.
 
 Note: Android only. Will overwrite destPath if it already exists
 
+### `copyAssetsFileIOS(imageUri: string, destPath: string, width: number, height: number, scale : number = 1.0, compression : number = 1.0, resizeMode : string = 'contain'  ): Promise<string>`
+
+iOS-ony: copies a file from camera-roll, that is prefixed with "assets-library://asset/asset.JPG?..."
+to a specific destination. It will download the original from iCloud if necessary.
+If width and height is > 0, the image will be resized to a specific size and a specific compression rate. 
+If scale is below 1, the image will be scaled according to the scale-factor (between 0.0 and 1.0)
+The resizeMode is also considered.
+Further information: https://developer.apple.com/reference/photos/phimagemanager/1616964-requestimageforasset
+The promise will on success return the final destination of the file, as it was defined in the destPath-parameter.
+
 ### `unlink(filepath: string): Promise<void>`
 
 Unlinks the item at `filepath`. If the item does not exist, an error will be thrown.

RNFSManager.h

@@ -6,17 +6,8 @@
 //  Copyright (c) 2015 Johannes Lumpe. All rights reserved.
 //
 
-#if __has_include("RCTBridgeModule.h")
-#import "RCTBridgeModule.h"
-#else
 #import <React/RCTBridgeModule.h>
-#endif
-
-#if __has_include("RCTLog.h")
-#import "RCTLog.h"
-#else
 #import <React/RCTLog.h>
-#endif
 
 @interface RNFSManager : NSObject <RCTBridgeModule>
 

RNFSManager.m

@@ -12,13 +12,13 @@
 #import "Downloader.h"
 #import "Uploader.h"
 
-#if __has_include("RCTEventDispatcher.h")
-#import "RCTEventDispatcher.h"
-#else
 #import <React/RCTEventDispatcher.h>
-#endif
+#import <React/RCTUtils.h>
+#import <React/RCTImageLoader.h>
 
 #import <CommonCrypto/CommonDigest.h>
+#import <Photos/Photos.h>
+
 
 @interface RNFSManager()
 
@@ -503,6 +503,90 @@ - (dispatch_queue_t)methodQueue
   }
 }
 
+
+/**
+ * iOS Only: copy images from the assets-library (camera-roll) to a specific path, asuming
+ * JPEG-Images. Video-Support will follow up, not implemented yet.
+ * 
+ * It is also supported to scale the image via scale-factor (0.0-1.0) or with a specific 
+ * width and height. Also the resizeMode will be considered.
+ */
+RCT_EXPORT_METHOD(copyAssetsFileIOS: (NSString *) imageUri
+                  toFilepath: (NSString *) destination
+                  width: (NSInteger) width
+                  height: (NSInteger) height
+                  scale: (CGFloat) scale
+                  compression: (CGFloat) compression
+                  resizeMode: (RCTResizeMode) resizeMode
+                  resolver: (RCTPromiseResolveBlock) resolve
+                  rejecter: (RCTPromiseRejectBlock) reject)
+
+{
+    CGSize size = CGSizeMake(width, height);
+    
+    NSURL* url = [NSURL URLWithString:imageUri];
+    PHFetchResult *results = [PHAsset fetchAssetsWithALAssetURLs:@[url] options:nil];
+    
+    if (results.count == 0) {
+        NSString *errorText = [NSString stringWithFormat:@"Failed to fetch PHAsset with local identifier %@ with no error message.", imageUri];
+        
+        NSMutableDictionary* details = [NSMutableDictionary dictionary];
+        [details setValue:errorText forKey:NSLocalizedDescriptionKey];
+        NSError *error = [NSError errorWithDomain:@"RNFS" code:500 userInfo:details];
+        [self reject: reject withError:error];
+        return;
+    }
+    
+    PHAsset *asset = [results firstObject];
+    PHImageRequestOptions *imageOptions = [PHImageRequestOptions new];
+    
+    // Allow us to fetch images from iCloud
+    imageOptions.networkAccessAllowed = YES;
+    
+    
+    // Note: PhotoKit defaults to a deliveryMode of PHImageRequestOptionsDeliveryModeOpportunistic
+    // which means it may call back multiple times - we probably don't want that
+    imageOptions.deliveryMode = PHImageRequestOptionsDeliveryModeHighQualityFormat;
+    
+    BOOL useMaximumSize = CGSizeEqualToSize(size, CGSizeZero);
+    CGSize targetSize;
+    if (useMaximumSize) {
+        targetSize = PHImageManagerMaximumSize;
+        imageOptions.resizeMode = PHImageRequestOptionsResizeModeNone;
+    } else {
+        targetSize = CGSizeApplyAffineTransform(size, CGAffineTransformMakeScale(scale, scale));
+        imageOptions.resizeMode = PHImageRequestOptionsResizeModeFast;
+    }
+    
+    PHImageContentMode contentMode = PHImageContentModeAspectFill;
+    if (resizeMode == RCTResizeModeContain) {
+        contentMode = PHImageContentModeAspectFit;
+    }
+    
+    // PHImageRequestID requestID =
+    [[PHImageManager defaultManager] requestImageForAsset:asset
+                                               targetSize:targetSize
+                                              contentMode:contentMode
+                                                  options:imageOptions
+                                            resultHandler:^(UIImage *result, NSDictionary<NSString *, id> *info) {
+        if (result) {
+            
+            NSData *imageData = UIImageJPEGRepresentation(result, compression );
+            [imageData writeToFile:destination atomically:YES];
+            resolve(destination);
+            
+        } else {
+            NSMutableDictionary* details = [NSMutableDictionary dictionary];
+            [details setValue:info[PHImageErrorKey] forKey:NSLocalizedDescriptionKey];
+            NSError *error = [NSError errorWithDomain:@"RNFS" code:501 userInfo:details];
+            [self reject: reject withError:error];
+            
+        }
+    }];
+    
+    
+}
+
 - (NSNumber *)dateToTimeIntervalNumber:(NSDate *)date
 {
   return @([date timeIntervalSince1970]);