//
//  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: ConfigurationIntent())
    }

    func getSnapshot(for configuration: ConfigurationIntent, in context: Context, completion: @escaping (SimpleEntry) -> ()) {
        let entry = SimpleEntry(id: "", name: "Tea", duration: 4 * 60.0, date: Date(), configuration: configuration)
        completion(entry)
    }

    func getTimeline(for configuration: ConfigurationIntent, in context: Context, completion: @escaping (Timeline<Entry>) -> ()) {
        var entries: [SimpleEntry] = []

        // Generate a timeline consisting of five entries an hour apart, starting from the current date.
        let currentDate = Date()
        for hourOffset in 0 ..< 5 {
            let entryDate = Calendar.current.date(byAdding: .hour, value: hourOffset, to: currentDate)!
            let entry = SimpleEntry(id: "", name: "Tea", duration: 4 * 60.0, date: entryDate, configuration: configuration)
            entries.append(entry)
        }

        let timeline = Timeline(entries: entries, policy: .atEnd)
        completion(timeline)
    }
}

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

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: ConfigurationIntent.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: ConfigurationIntent()))
            .previewContext(WidgetPreviewContext(family: .systemSmall))
    }
}