//
//  FileBrowser.swift
//  NeoSpectraMicroSwift
//
//  Created by Si-Ware on 1/30/18.
//  Copyright © 2018 siware. All rights reserved.
//

import Foundation

/// File browser containing navigation controller.
open class FileBrowser: UINavigationController {
    
    let parser = FileParser.sharedInstance
    
    var fileList: FileListViewController?
    
    /// File types to exclude from the file browser.
    open var excludesFileExtensions: [String]? {
        didSet {
            parser.excludesFileExtensions = excludesFileExtensions
        }
    }
    
    /// File paths to exclude from the file browser.
    open var excludesFilepaths: [URL]? {
        didSet {
            parser.excludesFilepaths = excludesFilepaths
        }
    }
    
    /// Override default preview and actionsheet behaviour in favour of custom file handling.
    open var didSelectFile: ((FBFile) -> ())? {
        didSet {
            fileList?.didSelectFile = didSelectFile
        }
    }
    
    func setChartView(chartView: ChartViewController){
        fileList?.chartView = chartView
    }
    
    func setPSDView(PSDView: PSDViewController){
        fileList?.PSDView = PSDView
    }
    
    func setSpectrumView(SpectrumView: SpectrumViewController){
        fileList?.SpectrumView = SpectrumView
    }
    
    public convenience init(save_load: String) {
        let parser = FileParser.sharedInstance
        let path = parser.documentsURL()
        self.init(initialPath: path, allowEditing: true, save_load: save_load, selectAll: false)
        guard let statusBar = UIApplication.shared.value(forKeyPath: "statusBarWindow.statusBar") as? UIView else { return }
        statusBar.backgroundColor = UIColor.clear
    }
    
    /// Initialise file browser.
    ///
    /// - Parameters:
    ///   - initialPath: NSURL filepath to containing directory.
    ///   - allowEditing: Whether to allow editing.
    ///   - showCancelButton: Whether to show the cancel button.
    public convenience init(initialPath: URL? = nil, allowEditing: Bool = false, showCancelButton: Bool = true, save_load: String = "save", selectAll: Bool = false) {
        
        let validInitialPath = initialPath ?? FileParser.sharedInstance.documentsURL()
        
        let fileListViewController = FileListViewController(initialPath: validInitialPath, showCancelButton: showCancelButton, save_load: save_load, selectAll: selectAll)
        fileListViewController.allowEditing = allowEditing
        self.init(rootViewController: fileListViewController)
        self.view.backgroundColor = UIColor.white
        self.fileList = fileListViewController
    }
}