// -----------------------------------------------------------------------------
// Lou-Ka — Agrégateur de logements à louer (province de Québec)
// Auteur : Simon-Pierre Boucher — contact@spboucher.ai
// App.swift : point d'entrée, modèle global (facettes / sources / stats), onglets
// -----------------------------------------------------------------------------
import SwiftUI
import Observation

@MainActor
@Observable
final class AppModel {
    var facets: Facets?
    var sources: [SourceInfo] = []
    var stats: Stats?

    private var loaded = false

    func loadGlobals(force: Bool = false) async {
        if loaded && !force { return }
        loaded = true
        async let facetsTask = try? API.facets()
        async let sourcesTask = try? API.sources()
        async let statsTask = try? API.stats()
        let (f, s, st) = await (facetsTask, sourcesTask, statsTask)
        if let f { facets = f }
        if let s { sources = s.sources }
        if let st { stats = st }
    }

    /// id de source → nom lisible (ex. « logisco » → « Logisco »)
    func sourceName(_ id: String) -> String {
        sources.first(where: { $0.id == id })?.name ?? id
    }
}

@main
struct LouKaApp: App {
    @State private var model = AppModel()
    @State private var reco = RecoEngine()

    init() {
        // Barre de navigation « éditoriale » : papier opaque, trait encre,
        // titres en Space Grotesk — cohérent sur toutes les pages.
        let nav = UINavigationBarAppearance()
        nav.configureWithOpaqueBackground()
        nav.backgroundColor = UIColor(LK.paper)
        nav.shadowColor = UIColor(LK.ink)
        var titleAttrs: [NSAttributedString.Key: Any] = [.foregroundColor: UIColor(LK.ink)]
        var largeAttrs = titleAttrs
        if let f = UIFont(name: "SpaceGrotesk-Bold", size: 17) { titleAttrs[.font] = f }
        if let f = UIFont(name: "SpaceGrotesk-Bold", size: 30) { largeAttrs[.font] = f }
        nav.titleTextAttributes = titleAttrs
        nav.largeTitleTextAttributes = largeAttrs
        UINavigationBar.appearance().standardAppearance = nav
        UINavigationBar.appearance().scrollEdgeAppearance = nav
    }

    var body: some Scene {
        WindowGroup {
            RootView()
                .environment(model)
                .environment(reco)
                .tint(LK.ink)
                // Le design Lou-Ka est un thème clair (papier/encre) : on le force
                // pour que les couleurs système (titres, champs, pickers) ne passent
                // jamais au blanc en mode sombre → texte invisible.
                .preferredColorScheme(.light)
        }
    }
}

struct RootView: View {
    @Environment(AppModel.self) private var model

    var body: some View {
        TabView {
            HomeView()
                .tabItem { Label("Annonces", systemImage: "list.bullet.rectangle.portrait") }
            DiscoverView()
                .tabItem { Label("Découvrir", systemImage: "rectangle.stack.badge.play") }
            MapTabView()
                .tabItem { Label("Carte", systemImage: "map") }
            StatsView()
                .tabItem { Label("Stats", systemImage: "chart.bar.xaxis") }
            SourcesView()
                .tabItem { Label("Sources", systemImage: "building.2") }
        }
        .task { await model.loadGlobals() }
    }
}