Server code to fetch and toggle devices

XIONControlPanel/Utilities/NSErrorAdditions.swift

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+//
+//  NSErrorAdditions.swift
+//  XIONControlPanel
+//
+//  Created by Charles Magahern on 12/31/15.
+//  Copyright © 2015 XION. All rights reserved.
+//
+
+import Foundation
+
+enum XIONErrorCode: Int {
+    case Unknown
+    case ConnectionError
+}
+
+extension NSError {
+    private static let XIONErrorDomain = "com.xionsf.controlpanel"
+    
+    class func xionError(code: XIONErrorCode) -> NSError
+    {
+        return self.xionError(code, userInfo: nil)
+    }
+    
+    class func xionError(code: XIONErrorCode, underlying: NSError?) -> NSError
+    {
+        var userInfo: [NSObject : AnyObject]? = nil
+        if (underlying != nil) {
+            userInfo = [
+                NSUnderlyingErrorKey : underlying!
+            ]
+        }
+        
+        return self.xionError(code, userInfo: userInfo)
+    }
+    
+    class func xionError(code: XIONErrorCode, userInfo: [NSObject : AnyObject]?) -> NSError
+    {
+        return NSError(domain: XIONErrorDomain, code: code.rawValue, userInfo: userInfo)
+    }
+    
+    var xionErrorCode: XIONErrorCode
+    {
+        return XIONErrorCode(rawValue: self.code)!
+    }
+}

XIONControlPanel/Utilities/NSURLAdditions.swift

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+//
+//  NSURLAdditions.swift
+//  ArchillectTV
+//
+//  Created by Charles Magahern on 10/25/15.
+//
+
+import Foundation
+
+extension NSURL {
+    var requestParameters: [String : String]? {
+        get
+        {
+            let urlComponents = self.absoluteString.componentsSeparatedByString("/")
+            let paramsString = urlComponents[urlComponents.count - 1]
+            let parameterComponents = paramsString.componentsSeparatedByCharactersInSet(NSCharacterSet(charactersInString: "&?"))
+            var dict: Dictionary<String, String> = Dictionary()
+            
+            for paramPair in parameterComponents {
+                let kvPair = paramPair.componentsSeparatedByString("=")
+                if (kvPair.count == 2 && kvPair[0].characters.count > 0) {
+                    let key = kvPair[0].stringByRemovingPercentEncoding!
+                    let value = kvPair[1].stringByRemovingPercentEncoding!
+                    dict[key] = value
+                }
+            }
+            
+            return dict
+        }
+    }
+    
+    func URLByAppendingRequestParameters(params: [String : String]) -> NSURL?
+    {
+        var paramsString = ""
+        
+        for (key, value) in params {
+            var delim = ""
+            if (paramsString.characters.count == 0) {
+                delim = "?"
+            } else {
+                delim = "&"
+            }
+            
+            let keyParam = key.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())
+            let valueParam = value.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())
+            paramsString += "\(delim)\(keyParam!)=\(valueParam!)"
+        }
+    
+        var absoluteString = self.absoluteString
+        absoluteString += paramsString
+        
+        return NSURL(string: absoluteString)
+    }
+}

XIONControlPanel/Utilities/StandardError.swift

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+//
+//  StandardError.swift
+//  XIONControlPanel
+//
+//  Created by Charles Magahern on 12/31/15.
+//  Copyright © 2015 XION. All rights reserved.
+//
+
+import Foundation
+
+class StandardErrorOutputStream: OutputStreamType {
+    func write(string: String) {
+        let stderr = NSFileHandle.fileHandleWithStandardError()
+        stderr.writeData(string.dataUsingEncoding(NSUTF8StringEncoding)!)
+    }
+}