import SwiftUI

private let df: DateFormatter = {
    let df = DateFormatter()
    df.dateStyle = .short
    df.timeStyle = .medium
    return df
}()

private let dateFormatter: DateFormatter = {
    let df = DateFormatter()
    df.dateStyle = .medium
    df.timeStyle = .none
    return df
}()

struct DayView: View {

    let dateIndex: Int

    @EnvironmentObject
    var storage: PersistentStorage

    var entries: [TemperatureMeasurement] {
        storage.loadMeasurements(for: dateIndex)
    }

    var body: some View {
        TemperatureDayOverview(points: entries)
        List(entries) { entry in
            HStack {
                Text(df.string(from: entry.date))
                Spacer()
                Text(entry.displayText)
            }
        }
    }
}

struct DayView_Previews: PreviewProvider {
    static var previews: some View {
        DayView(dateIndex: Date.now.dateIndex)
            .environmentObject(PersistentStorage.mock)
    }
}