MessageSplitViewController.swift 8.46 KB
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////////////////////////////////////////////////////////////////////////////////
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//
//  MessageSplitViewController.swift
//  MessageTextEntrySpike
//
//  Created by Aral Balkan on 03/01/2015.
//  Copyright (c) 2015 ind.ie. All rights reserved.
//
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////////////////////////////////////////////////////////////////////////////////
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import Cocoa
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public struct Message
{
    public var id:String
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    public var assetURLPrefix:String
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    public var folderURL:NSURL
    public var html:String
    public var synced:Bool = false
    
    func JSONString() -> String
    {
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        let dict = ["id": self.id, "assetURLPrefix": self.assetURLPrefix, "folderURL": self.folderURL.absoluteString!, "html": self.html, "synced":self.synced]
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        let jsonString = JSON(dict).rawString()
        
        if let jsonString = jsonString
        {
            return jsonString
        }
        else
        {
            return ""
        }
    }
}
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class MessageSplitViewController: NSSplitViewController
{
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    var iso8601DateFormatter:ISO8601DateFormatter!

    
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    //
    // MARK: - View lifecycle
    //
    
    
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    override func viewDidLoad()
    {
        super.viewDidLoad()
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        // Set up the ISO 8601 date formatter.
        iso8601DateFormatter = ISO8601DateFormatter()
        iso8601DateFormatter.format = .Calendar
        iso8601DateFormatter.includeTime = true
        iso8601DateFormatter.useMillisecondPrecision = true
        iso8601DateFormatter.timeSeparator = ("_" as NSString).characterAtIndex(0)
        
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        handle(MessageNotification.named(.SendMessage), with: "sendMessage:", on: self)
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    }
    
    
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    override func viewWillAppear()
    {
        createConstraints()
    }
    
    
    //
    // MARK: - Layout
    //
    
    func createConstraints()
    {
        view.removeConstraints(view.constraints)
        
        layout(view)
            {
                /* as */ view in
                
                view.width == view.superview!.width
                view.height == view.superview!.height
        }
    }
    
    
    //
    // MARK: Messaging
    //
    
    
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    func sendMessage(notification:NSNotification)
    {
        let timelineViewController = (self.splitViewItems[0] as! NSSplitViewItem).viewController as! TimelineViewController
        if let userInfo = (notification.userInfo as Dictionary!)
        {
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            let messageAttributedString = userInfo["message"] as! NSAttributedString
            println("Send message: received text: \(messageAttributedString)")
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            //
            // Get the folder to save the message to based on the current timeline
            //
            
            let _currentTimelinePath = timelineViewController.currentTimelinePath()
            
            if _currentTimelinePath == nil
            {
                fatalError("Conversation messages not implemented yet. Panicing!")
            }
            
            let currentTimelinePath = _currentTimelinePath!
            
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            println("Current timeline path = \(currentTimelinePath)")
            
            //
            // Get the correct web prefix
            //
            let _currentTimelineRelativeWebPrefix = timelineViewController.currentTimelineRelativeWebPrefix()
            
            if _currentTimelineRelativeWebPrefix == nil
            {
                fatalError("Could not get relative web prefix for current timeline — not implemented. Only Private, All Friends, and Public timlines implemented at the moment.")
            }
            
            let currentTimelineRelativeWebPrefix = _currentTimelineRelativeWebPrefix!
            
            println("Current timeline relative web prefix: \(currentTimelineRelativeWebPrefix)")
            
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            //
            // Create a file wrapper to save the contents as a directory.
            //
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            let messageDirectoryWrapper:NSFileWrapper? = messageAttributedString.fileWrapperFromRange(NSMakeRange(0, messageAttributedString.length), documentAttributes: [NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType, NSCharacterEncodingDocumentAttribute: NSUTF8StringEncoding, NSExcludedElementsDocumentAttribute: ["xml", "html", "head", "body", "font", "span"], NSPrefixSpacesDocumentAttribute: 4], error: nil)
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            // The file name of the message folder (this is the unique ID — unique per message folder) is the current timestamp in ISO 8601 format
            let messageFileName = iso8601DateFormatter.stringFromDate(NSDate(), timeZone: NSTimeZone(abbreviation: "UTC"))
            
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            // This is the URL that will be prefixed to all assets in the HTML (images, etc.)
            let assetURLPrefix = currentTimelineRelativeWebPrefix.stringByAppendingPathComponent(messageFileName)
            
            println("Message file name: \(messageFileName)")
            
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            let filePath = NSHomeDirectory().stringByAppendingPathComponent("Pulse/Sync").stringByAppendingPathComponent(currentTimelinePath).stringByAppendingPathComponent(messageFileName)
            
            println("About to save message at path: \(filePath)")
            
            let fileURL:NSURL? = NSURL(fileURLWithPath: filePath, isDirectory: true)
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            if let messageDirectoryWrapper = messageDirectoryWrapper, fileURL = fileURL
            {
                let messageFileWrappers:[NSObject:AnyObject] = messageDirectoryWrapper.fileWrappers
                
                for (fileName, fileWrapper) in messageFileWrappers
                {
                    println(" * \(fileName): \(fileWrapper)")
                    if fileName == "index.html"
                    {
                        let indexData:NSData? = fileWrapper.regularFileContents
                        if let indexData = indexData
                        {
                            let indexHTML = NSString(data: indexData, encoding: NSUTF8StringEncoding)
                            if var indexHTML = indexHTML
                            {
                                //
                                // Massage the HTML.
                                //
                                
                                // Fix image URLs
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                                indexHTML = indexHTML.stringByReplacingOccurrencesOfString("file:///", withString: assetURLPrefix.stringByAppendingString("/"))
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                                // Remove redundant empty lines.
                                indexHTML = indexHTML.stringByReplacingOccurrencesOfString("<p><br></p>", withString: "")
                                
                                //
                                // Update the index.html.
                                //
                                
                                // Remove the index.html file wrapper.
                                messageDirectoryWrapper.removeFileWrapper(fileWrapper as! NSFileWrapper)
                                
                                // And replace it with the new index.html we created.
                                let newIndexHTMLData:NSData? = indexHTML.dataUsingEncoding(NSUTF8StringEncoding)
                                
                                if let newIndexHTMLData = newIndexHTMLData
                                {
                                    let newIndexHTMLFileWrapper = NSFileWrapper(regularFileWithContents: newIndexHTMLData)
                                    newIndexHTMLFileWrapper.preferredFilename = "index.html"
                                    messageDirectoryWrapper.addFileWrapper(newIndexHTMLFileWrapper)
                                }
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                                // TODO: Error checking.
                                messageDirectoryWrapper.writeToURL(fileURL, options: NSFileWrapperWritingOptions.Atomic, originalContentsURL: nil, error: nil)
                                println(messageDirectoryWrapper)

                                //
                                // Create the message object and show it in the timeline.
                                //
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                                let message = Message(id: messageFileName, assetURLPrefix: assetURLPrefix, folderURL: fileURL, html: indexHTML as String, synced: false)
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                                timelineViewController.showMessage(message)
                                
                                break
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                            }
                        }
                    }
                }
            }
        }
    }
}