jgable · June 12, 2014 19:55 · Jun 12, 2014
diff --git a/derived.swift b/derived.swift
@@ -0,0 +1,88 @@
+// Playground - noun: a place where people can play
+
+import Cocoa
+
+// Base class for parameters to POST to service
+class APIParams {
+    func getData() -> Dictionary<String, AnyObject> {
+        return Dictionary<String, AnyObject>()
+    }
+}
+
+// Base class for parsing a JSON Response
+class APIResult {
+    func parseData(data: AnyObject?) {
+
+    }
+}
+
+// Derived example for a login service
+class DerivedAPIParams: APIParams {
+    var user = "some@one.com"
+    var pass = "secret"
+
+    // THIS METHOD IS CALLED CORRECTLY
+    override func getData() -> Dictionary<String, AnyObject> {
+        return [ "user": user, "pass": pass ]
+    }
+}
+
+// Derived example for parsing a login response
+class DerivedAPIResult: APIResult {
+    var success = false
+    var token:String? = ""
+
+    // THIS METHOD IS NEVER CALLED
+    override func parseData(data: AnyObject?) {
+        /*
+        self.success = data!.valueForKey("success") as Bool
+        self.token = data!.valueForKey("token") as? String
+        */
+
+        self.success = true
+        self.token = "1234"
+    }
+}
+
+class APIOperation<TParams: APIParams, TResult: APIResult> {
+    var url = "http://localhost:3000"
+
+    func request(params: TParams, done: (NSError?, TResult?) -> ()) {
+        let resultHandler = { (error: NSError?, response: NSHTTPURLResponse?, data: AnyObject?) -> () in
+            if (error) {
+                done(error, nil)
+                return
+            }
+
+            let parsed = self.parseResult(data)
+
+            done(nil, parsed)
+        };
+
+        let paramData = params.getData()
+
+        // ... snip making a request to website ...
+
+        let result = self.parseResult(nil)
+
+        done(nil, result)
+    }
+
+    func parseResult(data: AnyObject?) -> TResult {
+        var result = TResult.self()
+
+        // This should call the derived implementation if passed, right?
+        result.parseData(data)
+
+        return result
+    }
+}
+
+let derivedOp = APIOperation<DerivedAPIParams, DerivedAPIResult>()
+let params = DerivedAPIParams()
+
+derivedOp.request(params) {(error, result) in
+    if result? {
+        result!.success
+    }
+}