Gas-Tank-AR-App/GasTankAR/Views/ProjectCreate.swift

//
//  ProjectCreate.swift
//  GasTankAR
//
//  Created by Dennis Nemec on 25.08.26.
//

import SwiftUI
import SwiftData

struct ProjectCreateView: View {
    @Environment(\.modelContext) private var modelContext
    @Environment(\.dismiss) private var dismiss

    let onCreated: (Project) -> Void

    @State private var leadID: String = ""
    @State private var customerName: String = ""
    @State private var creationDate: Date = .now
    @State private var tank: Tank = Tank()

    /// Whether the entered values are sufficient to create a project.
    private var canSave: Bool {
        !leadID.trimmingCharacters(in: .whitespaces).isEmpty
            && !customerName.trimmingCharacters(in: .whitespaces).isEmpty
    }

    var body: some View {
        NavigationStack {
            Form {
                Section("Projektdaten") {
                    TextField("Lead-ID", text: $leadID)
                        .textInputAutocapitalization(.characters)
                        .autocorrectionDisabled()

                    TextField("Kundenname", text: $customerName)
                        .textInputAutocapitalization(.words)
                    
                    DatePicker(
                        "Erstellungsdatum",
                        selection: $creationDate,
                        displayedComponents: [.date]
                    )
                }

                TankSelectionSection(tank: $tank)
            }
            .navigationTitle("Projekt erstellen")
            .navigationBarTitleDisplayMode(.inline)
            .toolbar {
                ToolbarItem(placement: .cancellationAction) {
                    Button("Abbrechen", systemImage: "xmark") {
                        dismiss()
                    }
                }
                ToolbarItem(placement: .confirmationAction) {
                    Button("Speichern", systemImage: "checkmark") {
                        save()
                    }
                    .buttonStyle(.borderedProminent)
                    .disabled(!canSave)
                }
            }
        }
    }

    private func save() {
        let project = Project(
            leadID: leadID.trimmingCharacters(in: .whitespaces),
            customerName: customerName.trimmingCharacters(in: .whitespaces),
            creationDate: creationDate,
            tank: tank
        )
        modelContext.insert(project)
        onCreated(project)
        dismiss()
    }
}

#Preview {
    ProjectCreateView { _ in }
        .modelContainer(for: Project.self, inMemory: true)
}