DataImportSourcePicker.swift

//
//  DataImportSourcePicker.swift
//
//  Copyright © 2023 DuckDuckGo. All rights reserved.
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

import SwiftUI
import BrowserServicesKit

@MainActor
struct DataImportSourcePicker: View {

    @State private var viewModel: DataImportSourceViewModel

    private let onSelectedSourceChanged: (DataImport.Source) -> Void

    private var importSources: [DataImport.Source?] {
        viewModel.importSources
    }

    init(importSources: [DataImport.Source],
         selectedSource: DataImport.Source,
         onSelectedSourceChanged: @escaping (DataImport.Source) -> Void) {
        self.viewModel = DataImportSourceViewModel(importSources: importSources, selectedSource: selectedSource)
        self.onSelectedSourceChanged = onSelectedSourceChanged
    }

    var body: some View {
        Picker(selection: $viewModel.selectedSourceIndex) {
            ForEach(importSources.indices, id: \.self) { idx in
                if let source = importSources[idx] {
                    HStack {
                        if let icon = source.importSourceImage?.resized(to: NSSize(width: 16, height: 16)) {
                            Image(nsImage: icon)
                        }
                        Text(source.importSourceName)
                    }
                } else {
                    Divider()
                }
            }
        } label: {}
            .pickerStyle(.menu)
            .controlSize(.large)
            .onChange(of: viewModel.selectedSourceIndex) { idx in
                guard let importSource = importSources[idx] else { return }
                onSelectedSourceChanged(importSource)
            }
    }

}

#Preview {
    DataImportSourcePicker(importSources: DataImport.Source.allCases, selectedSource: .csv) {
        print("selection:", $0)
    }
    .padding()
    .frame(width: 500)
}