//
//  ComplicationController.swift
//  Switch WatchKit Extension
//
//  Created by Within on 2019-09-21.
//  Copyright © 2019 Within. All rights reserved.
//

import WatchKit

class ComplicationController: NSObject, CLKComplicationDataSource {
    func getSupportedTimeTravelDirections(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTimeTravelDirections) -> Void) {
        handler([])
    }
    
    func getTimelineStartDate(for complication: CLKComplication, withHandler handler: @escaping (Date?) -> Void) {
        handler(nil)
    }
    
    func getTimelineEndDate(for complication: CLKComplication, withHandler handler: @escaping (Date?) -> Void) {
        handler(nil)
    }
    
    func getPrivacyBehavior(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationPrivacyBehavior) -> Void) {
        handler(.showOnLockScreen)
    }
    
    // MARK: - Timeline Population
    
    func getCurrentTimelineEntry(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTimelineEntry?) -> Void) {
        NSLog("get current timeline entry")
        
        // Call the handler with the current timeline entry
        if (complication.family == .graphicCorner) {
            getFront() { front in
                handler(self.getEntryForGraphicCorner(front))
            }
        } else { handler(nil) }
    }
    
    func getTimelineEntries(for complication: CLKComplication, before date: Date, limit: Int, withHandler handler: @escaping ([CLKComplicationTimelineEntry]?) -> Void) {
        // Call the handler with the timeline entries prior to the given date
        handler(nil)
    }
    
    func getTimelineEntries(for complication: CLKComplication, after date: Date, limit: Int, withHandler handler: @escaping ([CLKComplicationTimelineEntry]?) -> Void) {
        // Call the handler with the timeline entries after to the given date
        handler(nil)
    }
    
    func getLocalizableSampleTemplate(for complication: CLKComplication, withHandler handler: @escaping (CLKComplicationTemplate?) -> Void) {
        NSLog("get sample template")
        // This method will be called once per supported complication, and the results will be cached
        
        if (complication.family == .graphicCorner) {
            handler(self.getTemplateForGraphicCorner("Example"))
        } else { handler(nil) }
    }
    
    func getEntryForGraphicCorner(_ front: String) -> CLKComplicationTimelineEntry {
        let gc = getTemplateForGraphicCorner(front)
        return CLKComplicationTimelineEntry(date: Date(), complicationTemplate: gc)
    }
    
    func getTemplateForGraphicCorner(_ front: String) -> CLKComplicationTemplateGraphicCornerStackText {
        let gc = CLKComplicationTemplateGraphicCornerStackText()
        let text = CLKSimpleTextProvider()
        text.text = front
        text.shortText = ""
        text.tintColor = UIColor.white
        
        gc.innerTextProvider = text
        
        return gc;
    }
}