//
//  Document.swift
//  Graphic Analysis 2
//
//  Created by Kilian Hofmann on 15.06.17.
//  Copyright © 2017 Kilian Hofmann. All rights reserved.
//

import Cocoa

class Document: NSDocument {

    var year: FileWrapper?
    var months: [FileWrapper?] = [nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil]
    @IBOutlet var collectionView: NSCollectionView!
    
    override init() {
        super.init()
        // Add your subclass-specific initialization here.
    }
    
    override class func autosavesInPlace() -> Bool {
        return false
    }
    
    override var windowNibName: String? {
        return "Document"
    }

    override func read(from fileWrapper: FileWrapper, ofType typeName: String) throws {
        year = fileWrapper
        for entry in fileWrapper.fileWrappers! {
            guard let month = Int(entry.key) else {
                continue
            }
            months[month-1] = entry.value
        }
        //throw NSError(domain: NSOSStatusErrorDomain, code: unimpErr, userInfo: nil)
    }
    
    override func windowControllerDidLoadNib(_ windowController: NSWindowController) {
        // Setup collection layout
        let flowLayout = NSCollectionViewFlowLayout()
        flowLayout.itemSize = NSSize(width: 228, height: 211)
        flowLayout.sectionInset = EdgeInsets(top: 10, left: 10, bottom: 10, right: 10)
        flowLayout.minimumInteritemSpacing = 10
        flowLayout.minimumLineSpacing = 10
        collectionView.collectionViewLayout = flowLayout
        // Performance
        collectionView.superview?.wantsLayer = true
    }
    
    override func shouldCloseWindowController(_ windowController: NSWindowController, delegate: Any?, shouldClose shouldCloseSelector: Selector?, contextInfo: UnsafeMutableRawPointer?) {
        super.shouldCloseWindowController(windowController, delegate: delegate, shouldClose: shouldCloseSelector, contextInfo: contextInfo)
    }
}

extension Document : NSCollectionViewDataSource {
    
    func collectionView(_ collectionView: NSCollectionView, numberOfItemsInSection section: Int) -> Int {
        return 12
    }
    
    func collectionView(_ itemForRepresentedObjectAtcollectionView: NSCollectionView, itemForRepresentedObjectAt indexPath: IndexPath) -> NSCollectionViewItem {
        let item = collectionView.makeItem(withIdentifier: "CollectionViewItem", for: indexPath)
        guard let item2 = item as? CollectionViewItem else {return item }
        item2.month.stringValue = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"][indexPath.item]
        return item2
    }
    
}