PadelClub/PadelClub/Views/Navigation/Agenda/EventListView.swift

//
//  EventListView.swift
//  PadelClub
//
//  Created by Razmig Sarkissian on 29/02/2024.
//

import SwiftUI

struct EventListView: View {
    @EnvironmentObject var dataStore: DataStore

    let tournaments: [FederalTournamentHolder]
    let viewStyle: AgendaDestination.ViewStyle
    
    var body: some View {
        let groupedTournamentsByDate = Dictionary(grouping: tournaments) { $0.startDate.startOfMonth }

        ForEach(groupedTournamentsByDate.keys.sorted(by: <), id: \.self) { section in
            if let _tournaments = groupedTournamentsByDate[section]?.sorted(by: \.startDate) {
                Section {
                    switch viewStyle {
                    case .list:
                        _listView(_tournaments)
                    case .calendar:
                        CalendarView(date: section, tournaments: _tournaments)
                    }
                } header: {
                    HStack {
                        Text(section.monthYearFormatted)
                        Spacer()
                        let count = _tournaments.map { $0.tournaments.count }.reduce(0,+)
                        Text("\(count.formatted()) tournoi" + count.pluralSuffix)
                    }
                }
                .headerProminence(.increased)
            }
        }
    }
    
    private func _listView(_ tournaments: [FederalTournamentHolder]) -> some View {
        ForEach(tournaments, id: \.holderId) { tournamentHolder in
            if let tournament = tournamentHolder as? Tournament {
                _tournamentView(tournament)
            } else if let federalTournament = tournamentHolder as? FederalTournament {
                _federalTournamentView(federalTournament)
            }
        }
    }
    
    private func _tournamentView(_ tournament: Tournament) -> some View {
        NavigationLink(value: tournament) {
            TournamentCellView(tournament: tournament)
        }
        .swipeActions(edge: .trailing, allowsFullSwipe: true) {
            Button(role: .destructive) {
                try? dataStore.tournaments.delete(instance: tournament)
            } label: {
                LabelDelete()
            }
        }
        .contextMenu {
            Button {
                
            } label: {
                Label("Voir dans le gestionnaire", systemImage: "line.diagonal.arrow")
            }
        }
    }
    
    private func _federalTournamentView(_ federalTournament: FederalTournament) -> some View {
        TournamentCellView(tournament: federalTournament)
    }

}

#Preview {
    EventListView(tournaments: [], viewStyle: .calendar)
}