[MC-1465] Custom templates define (Custom Templates Part 1)

[nzagorchev]

Overview

1. Define Custom In-app Templates and Functions.
2. Presenter protocol.
3. Implement the sync payload.
4. TemplateContext boilerplate.

Usage

    NSMutableSet *templates = [NSMutableSet set];
    CTInAppTemplateBuilder *templateBuilder = [[CTInAppTemplateBuilder alloc] init];
    [templateBuilder setName:@"Template 1"];
    [templateBuilder addArgument:@"boolean" withBool:NO];
    [templateBuilder addArgument:@"string" withString:@"string"];
    [templateBuilder addArgument:@"number" withNumber:@2];
    [templateBuilder addArgument:@"dictionary" withDictionary:@{
        @"key": @"value"
    }];
    [templateBuilder addFileArgument:@"file"];
    [templateBuilder addActionArgument:@"action"];
    [templateBuilder setPresenter:[MyTemplatePresenter new]];
    [templates addObject:[templateBuilder build]];
    
    CTTestTemplateProducer *producer = [[MyTemplateProducer alloc] initWithTemplates:templates];
    [CTCustomTemplatesManager registerTemplateProducer:producer];

@implementation MyTemplateProducer

- (instancetype)initWithTemplates:(NSSet<CTCustomTemplate *> *)templates {
    if (self = [super init]) {
        _templates = templates;
    }
    return self;
}

- (NSSet<CTCustomTemplate *> *)defineTemplates:(NSString *)accountId {
    return self.templates;
}

@end

    class TemplateProducer: CTTemplateProducer {
        func defineTemplates(_ instanceConfig: CleverTapInstanceConfig) -> Set<CTCustomTemplate> {
            
            let builder = CTInAppTemplateBuilder()
            builder.setName("Template 1")
            builder.addArgument("key", string: "value")
            builder.addArgument("number", number: 52)
            builder.addArgument("bool", boolean: false)
            builder.addActionArgument("action")
            builder.setPresenter(Template1Presenter())
            let template1 = builder.build()
            
            return [template1]
        }
    }

    class Template1Presenter: CTTemplatePresenter {
        func onPresent(context: CTTemplateContext) {
        }
        
        func onCloseClicked(context: CTTemplateContext) {
        }
    }
    
CTCustomTemplatesManager.register(TemplateProducer())