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copied!<p>I'm not familiar with C#, but I can offer you some python code in the hope that the ideas inside may be useful.</p> <p>I'll start with the client code, to show how the API is used : </p> <pre><code># Client code myapi = MyAPI() # then call different methods : message = "Some status" # send to all platforms myapi.broadcast(message) # or myapi.send_facebook(message) # send to fb only myapi.send_twitter(message) # send to twitter only # or myapi.send("facebook",message) # another way of doing the same thing </code></pre> <p>Now the implementation : </p> <pre><code># actual APIs import FacebookAPI1 import FacebookAPI2 ... import TwitterAPI1 import TwitterAPI2 ... # your individual wrappers, one for each API you want to use # they all expose a send method class FacebookAPI1Wrapper: def send(self,message): #use FacebookAPI1 functions class FacebookAPI2Wrapper: def send(self,message): #use FacebookAPI2 functions class TwitterAPI1Wrapper: def send(self,message): #use TwitterAPI1 functions class TwitterAPI2Wrapper: def send(self,message): #use TwitterAPI2 functions # Your API, this is the only class the client code needs. class MyAPI: def __init__(self): # you decide internally what wrappers to use self.fb_api = FacebookAPI1Wrapper() self.twitter_api = TwitterAPI2Wrapper() # No need for an intermediate level here I guess (Twitter and Platform_1 in your examples) # like : self.fb_api = Facebook() where Facebook chooses what wrapper to use internally (FacebookAPIWrapper) # it would just add unnecessary level of inderection. ... # other plateforms # hash-table-like structure, keys are plateform names, values are objects # this attribute is useful for the exposed send method where the first argument is a string # representing the name of the plateform the client wants to send a message to self.plateforms = {"facebook" : self.fb_api, "twitter" : self.twitter_api ... : ... } def broadcast(self,message): for plateform in self.plateforms.values() : #.values() will return the objects stored in the hash-table plateform.send_message(message) def send_facebook(self,message): self.fb_api.send(message) def send_twitter(self,message): self.twitter_api.send(message) #... def send(self,plateform_name,message): # a simple hash table lookup platform = self.platforms.get(plateform_name) plateform.send(message) </code></pre> <p>Changing your code internally (implementation code) won't break client code as long as you keep the same interface.</p>

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