iOS13 status bar has now 3 styles (facebook#26294)

Summary:
iOS13 status bar has now 3 styles
UIStatusBarStyleDefault, UIStatusBarStyleLightContent, UIStatusBarStyleDarkContent

UIStatusBarStyleDefault now acts as an automatic style which will set it’s value dynamically based on the the userinterfacestyle(One of the traits) of the viewcontroller that controls the status bar appearance.

[iOS] [Fixed] - iOS13 new status bar style UIStatusBarStyleDarkContent
Pull Request resolved: facebook#26294

Differential Revision: D17314054

Pulled By: cpojer

fbshipit-source-id: ea109e729bb551dff314bc00a056860a8febb0e9

React/Modules/RCTStatusBarManager.m

@@ -14,17 +14,44 @@
 #if !TARGET_OS_TV
 @implementation RCTConvert (UIStatusBar)
 
-RCT_ENUM_CONVERTER(UIStatusBarStyle, (@{
-  @"default": @(UIStatusBarStyleDefault),
-  @"light-content": @(UIStatusBarStyleLightContent),
-  @"dark-content": @(UIStatusBarStyleDefault),
-}), UIStatusBarStyleDefault, integerValue);
-
-RCT_ENUM_CONVERTER(UIStatusBarAnimation, (@{
-  @"none": @(UIStatusBarAnimationNone),
-  @"fade": @(UIStatusBarAnimationFade),
-  @"slide": @(UIStatusBarAnimationSlide),
-}), UIStatusBarAnimationNone, integerValue);
++ (UIStatusBarStyle)UIStatusBarStyle:(id)json RCT_DYNAMIC
+{
+  static NSDictionary *mapping;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    if (@available(iOS 13.0, *)) {
+      mapping = @{
+        @"default" : @(UIStatusBarStyleDefault),
+        @"light-content" : @(UIStatusBarStyleLightContent),
+#if defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && defined(__IPHONE_13_0) && \
+    __IPHONE_OS_VERSION_MAX_ALLOWED >= __IPHONE_13_0
+        @"dark-content" : @(UIStatusBarStyleDarkContent)
+#else
+          @"dark-content": @(UIStatusBarStyleDefault)
+#endif
+      };
+
+    } else {
+      mapping = @{
+        @"default" : @(UIStatusBarStyleDefault),
+        @"light-content" : @(UIStatusBarStyleLightContent),
+        @"dark-content" : @(UIStatusBarStyleDefault)
+      };
+    }
+  });
+  return _RCT_CAST(
+      type, [RCTConvertEnumValue("UIStatusBarStyle", mapping, @(UIStatusBarStyleDefault), json) integerValue]);
+}
+
+RCT_ENUM_CONVERTER(
+    UIStatusBarAnimation,
+    (@{
+      @"none" : @(UIStatusBarAnimationNone),
+      @"fade" : @(UIStatusBarAnimationFade),
+      @"slide" : @(UIStatusBarAnimationSlide),
+    }),
+    UIStatusBarAnimationNone,
+    integerValue);
 
 @end
 #endif