import SwiftUI
import SFSafeSymbols

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

struct HistoryItemDetail: View {

    let item: HistoryItem

    let history: HistoryManagerProtocol

    @Environment(\.dismiss) private var dismiss
    
    private var entryTime: String {
        df.string(from: item.requestDate)
    }

    var counterText: String {
        let sentCounter = item.request.id
        let startText = "\(sentCounter)"
        guard let rCounter = item.responseMessage?.id else {
            return startText
        }
        guard sentCounter + 1 != rCounter && sentCounter != rCounter else {
            return startText
        }
        return "\(sentCounter) -> \(rCounter)"
    }

    var body: some View {
        List {
            SettingsListTextItem(
                title: "Status",
                value: item.response.description)
            SettingsListTextItem(
                title: "Date",
                value: entryTime)
            SettingsListTextItem(
                title: "Connection",
                value: item.usedLocalConnection ? "Local" : "Remote")
            SettingsListTextItem(
                title: "Device ID",
                value: "\(item.request.deviceId!)")
            SettingsListTextItem(
                title: "Message Counter",
                value: counterText)
            SettingsListTextItem(
                    title: "Round Trip Time",
                    value: "\(Int(item.roundTripTime * 1000)) ms")
            if let offset = item.clockOffset {
                SettingsListTextItem(
                    title: "Clock offset",
                    value: "\(offset) seconds")
            }
            Button {
                delete(item: item)
            } label: {
                HStack {
                    Spacer()
                    Label("Delete", systemSymbol: .trash)
                    Spacer()
                }
            }
            .listRowBackground(
                RoundedRectangle(cornerSize: CGSize(width: 8, height: 8))
                    .fill(.red)
            )
            .foregroundColor(.white)
        }.navigationTitle("Details")
    }

    private func delete(item: HistoryItem) {
        guard history.delete(item: item) else {
            return
        }
        dismiss()
    }
}

struct HistoryItemDetail_Previews: PreviewProvider {
    static var previews: some View {
        HistoryItemDetail(item: .mock, history: HistoryManagerMock())
    }
}