// Auteur : Simon-Pierre Boucher — contact@spboucher.ai
// MainWindow.swift — la fenêtre principale : sidebar (Accueil, Recherche,
// Carte, les 12 univers avec accent + compteur live, Favoris, Historique,
// Recherches & alertes, KA Agent, Statut) → volet de contenu premium.
import SwiftUI

struct MainWindowView: View {
    @EnvironmentObject private var pulse: EcosystemPulse
    @EnvironmentObject private var state: AppState
    @EnvironmentObject private var favorites: FavoritesStore
    @EnvironmentObject private var recents: RecentsStore
    @Environment(\.openWindow) private var openWindow
    @Environment(\.colorScheme) private var scheme

    var body: some View {
        NavigationSplitView {
            sidebar
        } detail: {
            detail
                .background(KATheme.paper(scheme))
        }
        .frame(minWidth: 1000, minHeight: 640)
        .onAppear {
            state.openMain = { focusMainWindow(openWindow) }
        }
    }

    private var sidebar: some View {
        List(selection: $state.selection) {
            Section {
                Label("Accueil", systemImage: "house")
                    .tag(SidebarSelection.home)
                Label("Recherche", systemImage: "magnifyingglass")
                    .tag(SidebarSelection.search)
                Label("Carte", systemImage: "map")
                    .tag(SidebarSelection.map)
                Label("KA Agent", systemImage: "sparkle")
                    .tag(SidebarSelection.agent)
            } header: {
                GroupeKAMark(size: 15).padding(.vertical, 4)
            }

            Section("Univers") {
                ForEach(Ecosystem.all) { u in
                    HStack(spacing: 8) {
                        KALogo(id: u.id, size: 18,
                               fallbackSymbol: u.symbol, fallbackAccent: u.accent)
                        KAWordmark(universe: u, size: 12)
                        Spacer(minLength: 4)
                        if let n = pulse.totals[u.id] {
                            Text(Double(n).compact)
                                .font(.system(.caption2, design: .monospaced).weight(.bold))
                                .foregroundStyle(u.accent)
                                .contentTransition(.numericText())
                        }
                    }
                    .tag(SidebarSelection.universe(u.id))
                }
                HStack(spacing: 8) {
                    KALogo(id: "groupe-ka", size: 18)
                    Text("groupe-ka.com")
                        .font(.system(size: 12, weight: .bold, design: .rounded))
                }
                .tag(SidebarSelection.hub)
                .help("Le hub Groupe KA — le site, intégré dans l'app")
            }

            Section("Bibliothèque") {
                HStack {
                    Label("Favoris", systemImage: "heart")
                    Spacer()
                    if favorites.count > 0 {
                        Text("\(favorites.count)")
                            .font(.system(.caption2, design: .monospaced).weight(.bold))
                            .foregroundStyle(.secondary)
                    }
                }
                .tag(SidebarSelection.favorites)
                Label("Historique", systemImage: "clock.arrow.circlepath")
                    .tag(SidebarSelection.history)
                HStack {
                    Label("Recherches & alertes", systemImage: "bell")
                    Spacer()
                    if recents.alertCount > 0 {
                        Text("+\(recents.alertCount)")
                            .font(.system(.caption2, design: .monospaced).weight(.bold))
                            .padding(.horizontal, 6).padding(.vertical, 2)
                            .background(Color.red.opacity(0.85), in: Capsule())
                            .foregroundStyle(.white)
                    }
                }
                .tag(SidebarSelection.alerts)
            }

            Section {
                HStack {
                    Label("Statut", systemImage: "waveform.path.ecg")
                    Spacer()
                    Text("\(pulse.servicesUp)/\(pulse.health.count)")
                        .font(.system(.caption2, design: .monospaced).weight(.bold))
                        .foregroundStyle(pulse.servicesUp == pulse.health.count ? KATheme.green : .orange)
                }
                .tag(SidebarSelection.status)
            }
        }
        .listStyle(.sidebar)
        .navigationSplitViewColumnWidth(min: 215, ideal: 235)
    }

    @ViewBuilder
    private var detail: some View {
        switch state.selection ?? .home {
        case .home: HomeView()
        case .search: UniversalSearchView()
        case .map: MapExplorerView()
        case .agent: AgentChatView()
        case .status: StatusView()
        case .favorites: FavoritesView()
        case .history: HistoryView()
        case .alerts: AlertsView()
        case .hub:
            SiteView(url: Ecosystem.hubURL, title: "Groupe KA",
                     accent: KATheme.green, logoID: "groupe-ka")
        case .universe(let id):
            if let u = Ecosystem.universe(id) {
                UniverseExplorerView(universe: u)
                    .id(u.id) // réinitialise l'état quand on change d'univers
            }
        }
    }
}