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// SDLProtocolReceivedMessageRouter.m
//
// This class gets handed the SDLProtocol messages as they are received and decides what happens to them and where they are sent on to.
#import "SDLProtocolReceivedMessageRouter.h"
#import "SDLMacros.h"
#import "SDLProtocolMessage.h"
#import "SDLProtocolMessageAssembler.h"
NS_ASSUME_NONNULL_BEGIN
@interface SDLProtocolReceivedMessageRouter ()
@property (strong, nonatomic) NSMutableDictionary<NSNumber *, SDLProtocolMessageAssembler *> *messageAssemblers;
@end
@implementation SDLProtocolReceivedMessageRouter
- (instancetype)init {
if (self = [super init]) {
self.messageAssemblers = [NSMutableDictionary dictionaryWithCapacity:2];
}
return self;
}
- (void)handleReceivedMessage:(SDLProtocolMessage *)message {
SDLFrameType frameType = message.header.frameType;
switch (frameType) {
case SDLFrameTypeSingle: {
[self sdl_dispatchProtocolMessage:message];
} break;
case SDLFrameTypeControl: {
[self sdl_dispatchControlMessage:message];
} break;
case SDLFrameTypeFirst: // fallthrough
case SDLFrameTypeConsecutive: {
[self sdl_dispatchMultiPartMessage:message];
} break;
default: break;
}
}
- (void)sdl_dispatchProtocolMessage:(SDLProtocolMessage *)message {
if ([self.delegate respondsToSelector:@selector(onProtocolMessageReceived:)]) {
[self.delegate onProtocolMessageReceived:message];
}
}
- (void)sdl_dispatchControlMessage:(SDLProtocolMessage *)message {
switch (message.header.frameData) {
case SDLFrameInfoStartServiceACK: {
if ([self.delegate respondsToSelector:@selector(handleProtocolStartSessionACK:sessionID:version:)]) {
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
[self.delegate handleProtocolStartSessionACK:message.header.serviceType
sessionID:message.header.sessionID
version:message.header.version];
#pragma clang diagnostic pop
}
if ([self.delegate respondsToSelector:@selector(handleProtocolStartSessionACK:)]) {
[self.delegate handleProtocolStartSessionACK:message.header];
}
} break;
case SDLFrameInfoStartServiceNACK: {
if ([self.delegate respondsToSelector:@selector(handleProtocolStartSessionNACK:)]) {
[self.delegate handleProtocolStartSessionNACK:message.header.serviceType];
}
} break;
case SDLFrameInfoEndServiceACK: {
if ([self.delegate respondsToSelector:@selector(handleProtocolEndSessionACK:)]) {
[self.delegate handleProtocolEndSessionACK:message.header.serviceType];
}
} break;
case SDLFrameInfoEndServiceNACK: {
if ([self.delegate respondsToSelector:@selector(handleProtocolStartSessionNACK:)]) {
[self.delegate handleProtocolEndSessionNACK:message.header.serviceType];
}
} break;
case SDLFrameInfoHeartbeat: {
if ([self.delegate respondsToSelector:@selector(handleHeartbeatForSession:)]) {
[self.delegate handleHeartbeatForSession:message.header.sessionID];
}
} break;
case SDLFrameInfoHeartbeatACK: {
if ([self.delegate respondsToSelector:@selector(handleHeartbeatACK)]) {
[self.delegate handleHeartbeatACK];
}
} break;
default: break;
}
}
- (void)sdl_dispatchMultiPartMessage:(SDLProtocolMessage *)message {
// Pass multipart messages to an assembler and call delegate when done.
NSNumber *sessionID = [NSNumber numberWithUnsignedChar:message.header.sessionID];
SDLProtocolMessageAssembler *assembler = self.messageAssemblers[sessionID];
if (assembler == nil) {
assembler = [[SDLProtocolMessageAssembler alloc] initWithSessionID:message.header.sessionID];
self.messageAssemblers[sessionID] = assembler;
}
SDLMessageAssemblyCompletionHandler completionHandler = ^void(BOOL done, SDLProtocolMessage *assembledMessage) {
if (done) {
[self sdl_dispatchProtocolMessage:assembledMessage];
}
};
[assembler handleMessage:message withCompletionHandler:completionHandler];
}
@end
NS_ASSUME_NONNULL_END
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