// Copyright (C) 2016 Inigo Valentin
//
// 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 UIKit

/**
Extension of UIView to be formatted as sections.
*/
@IBDesignable class RowAlbum: UIView {
	
	// Outlets
	@IBOutlet weak var container: UIView!
	@IBOutlet weak var photo0: UIImageView!
	@IBOutlet weak var photo1: UIImageView!

	// Album ID
	var id = -1
	
	// Photo ids
	var photoIds: [Int] = [-1, -1]
	
	// Array with the imageviews
	var preview: [UIImageView] = []

	/**
	Default constructor
	*/
	required init?(coder aDecoder: NSCoder) {
		super.init(coder: aDecoder)
	}
	
	/**
	Loads the view from the xib with the same name as the class.
	*/
	private func loadViewFromNib() {
		let bundle = Bundle(for: type(of: self))
		let nib = UINib(nibName: String(describing: type(of: self)), bundle: bundle)
		nib.instantiate(withOwner: self, options: nil).first
		
		self.frame = self.bounds
		self.autoresizingMask = [.flexibleWidth, .flexibleHeight]
		self.translatesAutoresizingMaskIntoConstraints = true
		
		self.container.autoresizingMask = [.flexibleWidth, .flexibleHeight]
		self.container.translatesAutoresizingMaskIntoConstraints = true
		
		self.container.frame = self.bounds
		self.addSubview(self.container)
	}
	
	
	/**
	Default constructor.
	:param: s Custom identifier
	:param: i Custom identifier
	*/
	init(s: String, i: Int) {
		NSLog(":ROWALBUM:DEBUG: Init \(s), \(i)")
		
		super.init(frame: CGRect(x: 0, y: 0, width: 0, height: 0))
		loadViewFromNib()
		self.frame = self.bounds
		self.autoresizingMask = [.flexibleWidth, .flexibleHeight]
		self.translatesAutoresizingMaskIntoConstraints = true
		
		//Populate review array
		self.preview = [self.photo0, self.photo1]
		
		// Set tap recognizers
		// TODO
		//let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector (RowAlbum.openPhoto(_:)))
		//tapRecognizer.delegate = (UIApplication.shared.delegate as! AppDelegate).controller
		//self.addGestureRecognizer(tapRecognizer)
	}
	
	/**
	Default constructor for the interface builder
	*/
	override init(frame: CGRect){
		super.init(frame: frame)
	}
	
	func openLeftPhoto(_ sender:UITapGestureRecognizer? = nil){
		NSLog(":ROWALBUM:DEBUG: Getting delegate and showing left photo.")
		let delegate: AppDelegate = UIApplication.shared.delegate as! AppDelegate
		delegate.controller?.showPhoto(album: self.id, photo: self.photoIds[0])
	}
	
	func openRightPhoto(_ sender:UITapGestureRecognizer? = nil){
		NSLog(":ROWALBUM:DEBUG: Getting delegate and showing right photo.")
		let delegate: AppDelegate = UIApplication.shared.delegate as! AppDelegate
		delegate.controller?.showPhoto(album: self.id, photo: self.photoIds[1])
	}
	
	
	/**
	Changes the preview image of the photos.
	If null or empty, the igage is hidden.
	It also sets the tap listener to show the photo.
	:param: idx Id of the image in the row. 0 for left, 1 for right.
	:param: filename Filename of the image.
	*/
	func setImage(idx: Int, filename: String){
		if (filename == ""){
			self.preview[idx].isHidden = true
		}
		else{
			let path = "img/galeria/thumb/\(filename)"
			self.preview[idx].setImage(localPath: path, remotePath: "https://margolariak.com/\(path)")
			// Set tap listener
			if idx == 0 {
				let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector (RowAlbum.openLeftPhoto(_:)))
				tapRecognizer.delegate = (UIApplication.shared.delegate as! AppDelegate).controller
				self.preview[idx].isUserInteractionEnabled = true
				NSLog(":ROWALBUM:DEBUG: Setting tap recognizer for left photo.")
				self.preview[idx].addGestureRecognizer(tapRecognizer)
			}
			else{
				let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector (RowAlbum.openRightPhoto(_:)))
				tapRecognizer.delegate = (UIApplication.shared.delegate as! AppDelegate).controller
				self.preview[idx].isUserInteractionEnabled = true
				NSLog(":ROWALBUM:DEBUG: Setting tap recognizer for right photo.")
				self.preview[idx].addGestureRecognizer(tapRecognizer)
			}
		}
	}
	
	func setIds(left: Int, right: Int){
		self.photoIds[0] = left
		self.photoIds[1] = right
	}
	
}