DavisFriends/MainTabView.swift at main · Swift-Coding-Club-UCD/DavisFriends · GitHub

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//
//  MainTabView.swift
//  DavisFriends
//
//  Created by Jerry Au on 4/21/25.
//
import SwiftUI
import MapKit

struct MainTabView: View {
    @StateObject private var store = EventStore()
    @State private var region = MKCoordinateRegion(
        center: CLLocationCoordinate2D(latitude: 38.54237287621318,
                                       longitude: -121.74955185519764),
        span:   MKCoordinateSpan(latitudeDelta: 0.05,
                                 longitudeDelta: 0.05)
    )

    @State private var showEditor = false
    @State private var newCoord: CLLocationCoordinate2D?

    var body: some View {
        TabView {
            NavigationView {
                MapView(
                    region: $region,
                    pins:   store.pins.map(\.mkAnnotation),
                    onTap:  { coord in
                        newCoord   = coord
                        showEditor = true
                    }
                )
                .navigationTitle("Map")
            }
            .tabItem {
                Label("Map", systemImage: "map")
            }
            NavigationView {
                Text("Placeholder for your second tab")
                    .navigationTitle("Details")
            }
            .tabItem {
                Label("Details", systemImage: "list.bullet")
            }
        }
        .toolbarBackground(.blue, for: .tabBar)
        .toolbarBackground(.visible, for: .tabBar)
        .toolbarColorScheme(.dark, for: .tabBar)

        // sheet for adding a new pin
        .sheet(item: $newCoord, onDismiss: {newCoord = nil}) { coord in
            PinEditor(coordinate: coord) { title, subtitle in
                let pin = Pin(id: nil,
                              lat: coord.latitude,
                              long: coord.longitude,
                              locationName: title,
                              description: subtitle)
                store.append(pin)
                // dismiss by setting newCoord back to nil
                newCoord = nil
            }
        }
    }
}


struct MainPage_Preview: PreviewProvider {
    static var previews: some View {
        MainTabView()
    }
}