LeCountdown/LaunchWidget/LaunchWidget.swift

//
//  LaunchWidget.swift
//  LaunchWidget
//
//  Created by Laurent Morvillier on 25/01/2023.
//

import WidgetKit
import SwiftUI
import Intents

struct Provider: IntentTimelineProvider {
    func placeholder(in context: Context) -> SimpleEntry {
        SimpleEntry(id: "", name: "Tea", duration: 4 * 60.0, date: Date(), configuration: SelectCountdownIntent())
    }

    func getSnapshot(for configuration: SelectCountdownIntent, in context: Context, completion: @escaping (SimpleEntry) -> ()) {
        
        guard let cp = configuration.countdown,
              let identifier = cp.identifier,
              let countdown = IntentDataProvider.main.countdown(id: identifier) else {
            print("WARNING PLACEHOLDER!")
            
            let entry = SimpleEntry(id: "",
                                    name: "Not found",
                                    duration: 0.0,
                                    date: Date(),
                                    configuration: configuration)

            completion(entry)
            return
        }
        
        let entry = SimpleEntry(id: identifier,
                                name: countdown.name,
                                duration: countdown.duration,
                                date: Date(),
                                configuration: configuration)
        completion(entry)
        
    }

    func getTimeline(for configuration: SelectCountdownIntent, in context: Context, completion: @escaping (Timeline<Entry>) -> ()) {

        getSnapshot(for: configuration, in: context) { entry in
            let timeline = Timeline(entries: [entry], policy: .atEnd)
            completion(timeline)
        }
        
    }
}

struct SimpleEntry: TimelineEntry {
    let id: String
    let name: String?
    let duration: Double
    
    let date: Date
    let configuration: SelectCountdownIntent
}

struct CountdownWidgetView: View {
    
    let id: String
    let name: String?
    let duration: Double
    
    var body: some View {
        CountdownView(name: name, duration: duration).widgetURL(URL(string: id))
    }
    
}

struct LaunchWidgetEntryView : View {
    
    @Environment(\.widgetFamily) var family: WidgetFamily
    
    var entry: Provider.Entry

    @ViewBuilder
    var body: some View {
        switch family {
        case .systemSmall: CountdownWidgetView(id: entry.id, name: entry.name, duration: entry.duration)
            
//        case .systemMedium: GameStatusWithLastTurnResult(gameStatus)
//        case .systemLarge: GameStatusWithStatistics(gameStatus)
//        case .systemExtraLarge: GameStatusWithStatisticsExtraLarge(gameStatus)
//        case .accessoryCircular: HealthLevelCircular(selectedCharacter)
//        case .accessoryRectangular: HealthLevelRectangular(selectedCharacter)
//        case .accessoryInline: HealthLevelInline(selectedCharacter)
        default: CountdownWidgetView(id: entry.id, name: entry.name, duration: entry.duration)
        }
    }
    
    
}

struct LaunchWidget: Widget {
    let kind: String = "com.staxriver.launch-widget"

    var body: some WidgetConfiguration {
        IntentConfiguration(kind: kind,
                            intent: SelectCountdownIntent.self,
                            provider: Provider()) { entry in
            LaunchWidgetEntryView(entry: entry)
        }
        .configurationDisplayName("Launch Widget")
        .description("Select and launch your countdowns")
        .supportedFamilies([.systemSmall, .accessoryCircular])
    }
}

struct LaunchWidget_Previews: PreviewProvider {
    static var previews: some View {
        LaunchWidgetEntryView(entry: SimpleEntry(id: "", name: "Tea", duration: 3 * 60.0, date: Date(), configuration: SelectCountdownIntent()))
            .previewContext(WidgetPreviewContext(family: .systemSmall))
        LaunchWidgetEntryView(entry: SimpleEntry(id: "", name: "Tea", duration: 3 * 60.0, date: Date(), configuration: SelectCountdownIntent()))
            .previewContext(WidgetPreviewContext(family: .accessoryRectangular))

    }
}