import SwiftUI

struct FolderSettingsView: View {

    @Environment(\.language)
    private var language

    @AppStorage("contentPath")
    private var contentPath: String = ""

    @EnvironmentObject
    private var content: Content

    @State
    private var folderSelection: SecurityScopeBookmark = .contentPath

    var body: some View {
        ScrollView {
            VStack(alignment: .leading) {
                Text("Folder Settings")
                    .font(.largeTitle)
                    .bold()
                Text("Select the folders for the app to work.")
                    .padding(.bottom, 30)
                Text("Content Folder")
                    .font(.headline)
                    .padding(.bottom, 1)
                Text(contentPath)
                Button(action: selectContentFolder) {
                    Text("Select folder")
                }
                .padding(.bottom)
                Text("Output Folder")
                    .font(.headline)
                    .padding(.bottom, 1)
                Text(content.settings.outputDirectoryPath)
                Button(action: selectOutputFolder) {
                    Text("Select folder")
                }
                .padding(.bottom)
                
            }
        }
    }

    // MARK: Folder selection

    private func selectContentFolder() {
        folderSelection = .contentPath
        guard let url = savePanelUsingOpenPanel() else {
            return
        }
        self.contentPath = url.path()
    }

    private func selectOutputFolder() {
        folderSelection = .outputPath
        guard let url = savePanelUsingOpenPanel() else {
            return
        }
        content.settings.outputDirectoryPath = url.path()
    }

    private func savePanelUsingOpenPanel() -> URL? {
        let panel = NSOpenPanel()
        // Sets up so user can only select a single directory
        panel.canChooseFiles = false
        panel.canChooseDirectories = true
        panel.allowsMultipleSelection = false
        panel.showsHiddenFiles = false
        panel.title = "Select Save Directory"
        panel.prompt = "Select Save Directory"

        let response = panel.runModal()
        guard response == .OK else {

            return nil
        }
        guard let url = panel.url else {
            return nil
        }
        content.storage.save(folderUrl: url, in: folderSelection)
        return url
    }
}

#Preview {
    FolderSettingsView()
        .environmentObject(Content.mock)
        .padding()
}