some ideas for mapping data for complications

complication.swift

 // MARK: - Timeline Population
    
    func getCurrentTimelineEntryForComplication(complication: CLKComplication, withHandler handler: ((CLKComplicationTimelineEntry?) -> Void)) {
        // Call the handler with the current timeline entry
        
        #if DEBUG
            print(">>> Entering \(__FUNCTION__) <<<")
            print("complication family: \(complication.family)")
        #endif
        
        // let myDelegate = WKExtension.sharedExtension().delegate as! ExtensionDelegate
        // var data : Dictionary = myDelegate.myComplicationData[ComplicationCurrentEntry]!
        
        var entry : CLKComplicationTimelineEntry?
        let now = NSDate()
        
        let complicationFamily = complication.family
        
        let sampleDisplayName = model.displayName

        let sampleSGV = model.sgvStringWithEmoji
        let sampleDelta = model.deltaString
        let sampleRaw = model.rawString // only if available.
        let sampleRawShort = "100 : C"
        
        switch complicationFamily {
        case .ModularSmall:
            // CLKComplicationTemplateModularSmallStackImage
            // CLKComplicationTemplateModularSmallStackText
            
            let modularTemplate = CLKComplicationTemplateModularSmallStackText()
            modularTemplate.line1TextProvider = CLKSimpleTextProvider(text: sampleSGV)
            modularTemplate.line2TextProvider = CLKSimpleTextProvider(text: sampleDelta)
            
            // Create the entry.
            entry = CLKComplicationTimelineEntry(date: now, complicationTemplate: modularTemplate)
            
        case .ModularLarge:
            // CLKComplicationTemplateModularLargeColumns
            // CLKComplicationTemplateModularLargeStandardBody
            
            let modularTemplate = CLKComplicationTemplateModularLargeStandardBody()
            modularTemplate.headerTextProvider = CLKSimpleTextProvider(text: sampleDisplayName)
            modularTemplate.body1TextProvider = CLKSimpleTextProvider(text: sampleDelta)
            modularTemplate.body2TextProvider = CLKSimpleTextProvider(text: sampleRaw, shortText: sampleRawShort)
            // Create the entry.
            entry = CLKComplicationTimelineEntry(date: now, complicationTemplate: modularTemplate)
            
        case .UtilitarianSmall:
            // CLKComplicationTemplateUtilitarianSmallFlat
            let utilitarianSmall = CLKComplicationTemplateUtilitarianSmallFlat()
            utilitarianSmall.textProvider = CLKSimpleTextProvider(text: sampleSGV)
            // Create the entry.
            entry = CLKComplicationTimelineEntry(date: now, complicationTemplate: utilitarianSmall)
            
            
        case .UtilitarianLarge:
            // CLKComplicationTemplateUtilitarianLargeFlat
            let utilitarianLarge = CLKComplicationTemplateUtilitarianLargeFlat()
            utilitarianLarge.textProvider = CLKSimpleTextProvider(text: sampleDisplayName + " " + sampleSGV + " " + sampleDelta + " " + sampleRaw)
            entry = CLKComplicationTimelineEntry(date: now, complicationTemplate: utilitarianLarge)
            
            
        case .CircularSmall:
            let circularSmall = CLKComplicationTemplateCircularSmallStackText()
            circularSmall.line1TextProvider = CLKSimpleTextProvider(text: sampleSGV)
            circularSmall.line2TextProvider = CLKSimpleTextProvider(text: sampleDelta)
            entry = CLKComplicationTimelineEntry(date: now, complicationTemplate: circularSmall)
        }
        
        handler(entry)
    }
    
    func getTimelineEntriesForComplication(complication: CLKComplication, beforeDate date: NSDate, limit: Int, withHandler handler: (([CLKComplicationTimelineEntry]?) -> Void)) {
        // Call the handler with the timeline entries prior to the given date
        handler(nil)
    }
    
    func getTimelineEntriesForComplication(complication: CLKComplication, afterDate date: NSDate, limit: Int, withHandler handler: (([CLKComplicationTimelineEntry]?) -> Void)) {
        // Call the handler with the timeline entries after to the given date
        handler(nil)
    }
    
    // MARK: - Update Scheduling
    
    func getNextRequestedUpdateDateWithHandler(handler: (NSDate?) -> Void) {
        // Call the handler with the date when you would next like to be given the opportunity to update your complication content
        handler(nextUpdateRequest);
    }
    
    // MARK: - Placeholder Templates
    
    func getPlaceholderTemplateForComplication(complication: CLKComplication, withHandler handler: (CLKComplicationTemplate?) -> Void) {
        // This method will be called once per supported complication, and the results will be cached
        #if DEBUG
            print(">>> Entering \(__FUNCTION__) <<<")
            print("complication family: \(complication.family)")
        #endif
        
        let sampleDisplayName = "Nightscout"
        let sampleSGV = "---"
        let sampleDelta = "- --/--"
        let sampleRaw = "--- : ---"
        let sampleRawShort = "100 : C"

        var template : CLKComplicationTemplate?
        let complicationFamily = complication.family
        
        switch complicationFamily {
        case .ModularSmall:
            // CLKComplicationTemplateModularSmallStackImage
            // CLKComplicationTemplateModularSmallStackText
            
            let modularTemplate = CLKComplicationTemplateModularSmallStackText()
            modularTemplate.line1TextProvider = CLKSimpleTextProvider(text: sampleSGV)
            modularTemplate.line2TextProvider = CLKSimpleTextProvider(text: sampleDelta)
            template = modularTemplate
            
            
        case .ModularLarge:
            // CLKComplicationTemplateModularLargeColumns
            // CLKComplicationTemplateModularLargeStandardBody
            
            let modularTemplate = CLKComplicationTemplateModularLargeStandardBody()
            modularTemplate.headerTextProvider = CLKSimpleTextProvider(text: sampleDisplayName)
            modularTemplate.body1TextProvider = CLKSimpleTextProvider(text: sampleDelta)
            modularTemplate.body2TextProvider = CLKSimpleTextProvider(text: sampleRaw, shortText: sampleRawShort)
            template = modularTemplate
            
        case .UtilitarianSmall:
            // CLKComplicationTemplateUtilitarianSmallFlat
            let utilitarianSmall = CLKComplicationTemplateUtilitarianSmallFlat()
            utilitarianSmall.textProvider = CLKSimpleTextProvider(text: sampleSGV)
            template = utilitarianSmall
            
            
        case .UtilitarianLarge:
            // CLKComplicationTemplateUtilitarianLargeFlat
            let utilitarianLarge = CLKComplicationTemplateUtilitarianLargeFlat()
            utilitarianLarge.textProvider = CLKSimpleTextProvider(text: sampleDisplayName + " " + sampleSGV + " " + sampleDelta + " " + sampleRaw)
            template = utilitarianLarge
            
            
        case .CircularSmall:
            let circularSmall = CLKComplicationTemplateCircularSmallStackText()
            circularSmall.line1TextProvider = CLKSimpleTextProvider(text: sampleSGV)
            circularSmall.line2TextProvider = CLKSimpleTextProvider(text: sampleDelta)
            template = circularSmall
        }
        
        handler(template)
    }