GMiOS/app/PostView.swift

//
// This file is part of the Gasteizko Margolariak IOS app.
//
// The Gasteizko Margolariak IOS app is free software: you can
// redistribute it and/or modify it under the terms of the
// GNU General Public License as published by the Free Software
// Foundation, either version 3 of the License, or (at your
// option) any later version.
//
// The Gasteizko Margolariak IOS app is distributed in the
// hope that it will be useful, but WITHOUT ANY WARRANTY;
// without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
// Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with the Gasteizko Margolariak IOS app.
// If not, see <http://www.gnu.org/licenses/>.

import Foundation
import CoreData
import UIKit
/**
Class to handle the post view.
*/
class PostView: UIView {
	
	@IBOutlet var container: UIView!
	//The main scroll view.
	@IBOutlet weak var scrollView: UIScrollView!

	@IBOutlet weak var title: UILabel!

	@IBOutlet weak var image: UIImageView!
	
	@IBOutlet weak var text: UILabel!
	
	@IBOutlet weak var date: UILabel!
	
	@IBOutlet weak var navigationBar: UINavigationBar!
	
	@IBOutlet weak var navigationBarItem: UINavigationItem!
	
	// Post id. Must be set pre-segue.
	var id: Int = -1
	
	override init(frame: CGRect){
		print("POST:LOG: Init (cgrect). Id is \(self.id)")
		super.init(frame: frame)
		//Load the contents of the PostView.xib file.
		//Bundle.main.loadNibNamed("PostView", owner: self, options: nil)
		//self.addSubview(container)
		//container.frame = self.bounds
	}
	
	/**
	Run when the view is started.
	*/
	required init?(coder aDecoder: NSCoder) {
		print("POST:LOG: Init (coder). Id is: \(self.id)")
		super.init(coder: aDecoder)
		//Load the contents of the PostView.xib file.
		//Bundle.main.loadNibNamed("PostView", owner: self, options: nil)
		//self.addSubview(container)
		//container.frame = self.bounds
		
		//Assign navigation bar items
		//let backButton: UIBarButtonItem = UIBarButtonItem(title: "Back", style: .plain, target: self, action: #selector(back))
		//navigationBarItem.leftBarButtonItem = backButton;
		
		
	}
	
	func back() {
		print("POST:DEBUG: Back")
		//self.dismiss(animated: true, completion: nil)
	}
	

	public func loadPost(id: Int) -> Bool{
	
		print("POST:DEBUG: Loading post \(id)")
		
		let context = NSManagedObjectContext(concurrencyType: .privateQueueConcurrencyType)
		let appDelegate = UIApplication.shared.delegate as! AppDelegate
		let lang : String = getLanguage()
		context.persistentStoreCoordinator = appDelegate.persistentStoreCoordinator
		let fetchRequest: NSFetchRequest<Post> = Post.fetchRequest()
		fetchRequest.predicate = NSPredicate(format: "id = %i", id)
		
		do {
			//go get the results
			let searchResults = try context.fetch(fetchRequest)
			
			var count = 0
			var sTitle: String
			var sText: String
			var image: String
			
			//You need to convert to NSManagedObject to use 'for' loops
			for r in searchResults as [NSManagedObject] {
				count = count + 1
				
				sTitle = r.value(forKey: "title_\(lang)")! as! String
				sText = r.value(forKey: "text_\(lang)")! as! String
				title.text = "  \(sTitle)"
				text.text = sText.stripHtml()
				
				// Get main image
				image = ""
				let imgFetchRequest: NSFetchRequest<Post_image> = Post_image.fetchRequest()
				let imgSortDescriptor = NSSortDescriptor(key: "idx", ascending: true)
				let imgSortDescriptors = [imgSortDescriptor]
				imgFetchRequest.sortDescriptors = imgSortDescriptors
				imgFetchRequest.predicate = NSPredicate(format: "post == %i", id)
				imgFetchRequest.fetchLimit = 1
				//TODO get more images
				do{
					let imgSearchResults = try context.fetch(imgFetchRequest)
					for imgR in imgSearchResults as [NSManagedObject]{
						image = imgR.value(forKey: "image")! as! String
						print ("POST:LOG: Image: \(image)")
						//TODO set image
						//row.setImage(filename: image)
					}
				} catch {
					print("POST:ERROR: Error getting image for post \(id): \(error)")
				}
				
			}
		} catch {
			print("POST:ERROR: Error with request: \(error)")
		}
		
		//Always at the end: update scrollview
		// TODOs
		var h: Int = 0
		for view in scrollView.subviews {
			//contentRect = contentRect.union(view.frame);
			h = h + Int(view.frame.height) + 30 //Why 30?
		}
		print("POST:DEBUG: Height: \(h)")
		// TODO: Calculate at the end
		self.scrollView.contentSize.height = 4500//CGFloat(h);
		
		return true
	}
	
	func getLanguage() -> String{
		let pre = NSLocale.preferredLanguages[0].subStr(start: 0, end: 1)
		if(pre == "es" || pre == "en" || pre == "eu"){
			return pre
		}
		else{
			return "es"
		}
	}
}