//
//  TabSelectionView.swift
//  DynamicIsland
//
//  Created by Hugo Persson on 2024-08-25.
//  Modified by Hariharan Mudaliar

import SwiftUI
import Defaults

struct TabModel: Identifiable {
    let id = UUID()
    let label: String
    let icon: String
    let view: NotchViews
}

struct TabSelectionView: View {
    @ObservedObject var coordinator = DynamicIslandViewCoordinator.shared
    @Default(.enableTimerFeature) var enableTimerFeature
    @Default(.enableStatsFeature) var enableStatsFeature
    @Default(.enableColorPickerFeature) var enableColorPickerFeature
    @Default(.timerDisplayMode) var timerDisplayMode
    @Namespace var animation
    
    private var tabs: [TabModel] {
        var tabsArray: [TabModel] = []
        
        tabsArray.append(TabModel(label: "Home", icon: "house.fill", view: .home))

        if Defaults[.dynamicShelf] {
            tabsArray.append(TabModel(label: "Shelf", icon: "tray.fill", view: .shelf))
        }
        
        if enableTimerFeature && timerDisplayMode == .tab {
            tabsArray.append(TabModel(label: "Timer", icon: "timer", view: .timer))
        }

        // Stats tab only shown when stats feature is enabled
        if Defaults[.enableStatsFeature] {
            tabsArray.append(TabModel(label: "Stats", icon: "chart.xyaxis.line", view: .stats))
        }

        if Defaults[.enableNotes] || (Defaults[.enableClipboardManager] && Defaults[.clipboardDisplayMode] == .separateTab) {
            let label = Defaults[.enableNotes] ? "Notes" : "Clipboard"
            let icon = Defaults[.enableNotes] ? "note.text" : "doc.on.clipboard"
            tabsArray.append(TabModel(label: label, icon: icon, view: .notes))
        }
        
        return tabsArray
    }
    var body: some View {
        HStack(spacing: 0) {
            ForEach(tabs) { tab in
                    TabButton(label: tab.label, icon: tab.icon, selected: coordinator.currentView == tab.view) {
                        withAnimation(.smooth) {
                            coordinator.currentView = tab.view
                        }
                    }
                    .frame(height: 26)
                    .foregroundStyle(tab.view == coordinator.currentView ? .white : .gray)
                    .background {
                        if tab.view == coordinator.currentView {
                            Capsule()
                                .fill(coordinator.currentView == tab.view ? Color(nsColor: .secondarySystemFill) : Color.clear)
                                .matchedGeometryEffect(id: "capsule", in: animation)
                        } else {
                            Capsule()
                                .fill(coordinator.currentView == tab.view ? Color(nsColor: .secondarySystemFill) : Color.clear)
                                .matchedGeometryEffect(id: "capsule", in: animation)
                                .hidden()
                        }
                    }
            }
        }
        .clipShape(Capsule())
    }
}

#Preview {
    DynamicIslandHeader().environmentObject(DynamicIslandViewModel())
}