FacilitiesListViewController.swift 17.9 KB
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//
//  LocationsListViewController.swift
//  WhatsOpen
//
//  Created by Zach Knox on 4/5/17.
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//  Copyright © 2017 SRCT. Some rights reserved.
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//

import UIKit
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import DeckTransition
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import RealmSwift
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//Realm Model
class FacilitiesModel: Object {
	var facilities = List<Facility>()
	@objc dynamic var lastUpdated = Date()
	@objc dynamic let id = 0
}


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class FacilitiesListViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource, UIViewControllerPreviewingDelegate {
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	let realm = try! Realm()

	
	
	
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	var facilitiesArray = List<Facility>()
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    // array of facilities that pass the current filters
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    var filteredFacilities = List<Facility>()
    
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    // passing in nil sets the search controller to be this controller
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    let searchController = UISearchController(searchResultsController: nil)

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	var filters = Filters()
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	override var preferredStatusBarStyle: UIStatusBarStyle {
		return .default
	}
	
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	@IBOutlet var LeftButton: UIBarButtonItem!
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	@IBAction func RightButton(_ sender: Any) {
	}
	@IBOutlet var RightButton: UIBarButtonItem!
	
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	@IBOutlet var settingsButton: UIBarButtonItem!
	
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	@IBOutlet var LocationsList: UICollectionView!
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	@IBOutlet var LocationsListLayout: UICollectionViewFlowLayout!
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	@IBOutlet var favoritesControl: UISegmentedControl!
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	var showFavorites = false

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	@IBOutlet var LastUpdatedLabel: UIBarButtonItem!
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    let refreshControl = UIRefreshControl()
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	@IBAction func favoritesControlChanges(_ sender: Any) {
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		switch self.favoritesControl.selectedSegmentIndex
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		{
		case 0:
			showFavorites = false
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			filteredFacilities = facilitiesArray
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		case 1:
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            showFavorites = true
			filteredFacilities = filterFacilitiesForFavorites()
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		default:
			showFavorites = false
		}
		self.LocationsList.reloadData()
	}
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    /**
     Get all of the facilities that are favorited.
     
     - returns:
        List of facilities that are favorited
     */
    func filterFacilitiesForFavorites() -> List<Facility> {
        var favoriteFacilites = List<Facility>()
        
        // add the facility to favorites list if it is a favorite
        favoriteFacilites = facilitiesArray.filter({ (facility: Facility) -> Bool in
            return Utilities.isFavoriteFacility(facility)
        })
        
        return favoriteFacilites
    }
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	override func viewWillLayoutSubviews() {
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		LocationsListLayout.itemSize.width = getCellWidth()
		LocationsListLayout.invalidateLayout()
	}
	
	func getCellWidth() -> CGFloat {
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		let windowWidth = self.view.frame.size.width
		
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		if(windowWidth < 640) {
			return windowWidth - 20
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		}
		else if(windowWidth >= 640 && windowWidth < 1024) {
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			return (windowWidth / 2) - 15
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		}
		else if(windowWidth >= 1024) {
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			return (windowWidth / 3) - 15
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		}
		
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		return 0
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	}
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	@IBAction func RefreshButton(_ sender: Any) {
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		refresh(sender, forceUpdate: true)
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	}
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	override func viewWillAppear(_ animated: Bool) {
		LastUpdatedLabel.isEnabled = false
	}
	
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	@objc func tapRecognizer(_ sender: UITapGestureRecognizer) {
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		let tapLocation = sender.location(in: LocationsList)
		let indexPath = LocationsList.indexPathForItem(at: tapLocation)
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		if((indexPath) != nil) {
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            let destination = self.storyboard?.instantiateViewController(withIdentifier: "detailView") as? FacilityDetailViewController
            let tapped = self.LocationsList.cellForItem(at: indexPath!) as! FacilityCollectionViewCell
            destination!.facility = tapped.facility
            self.presentDetailView(destination!)
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		}
	}
	
	func presentDetailView(_ destination: FacilityDetailViewController) {
		if(self.view.traitCollection.horizontalSizeClass == .regular && self.view.traitCollection.verticalSizeClass == .regular) {
			//do a popover here for the iPad
			//iPads are cool right?
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			destination.modalPresentationStyle = .popover
			let popoverController = destination.popoverPresentationController
			popoverController?.permittedArrowDirections = .any
			popoverController?.sourceView = destination.view
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            // present the detail view over the search controller if we're searching
            if searchController.isActive {
                searchController.present(destination, animated: true, completion: nil)
            }
            else {
                present(destination, animated: true, completion: nil)
            }
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		}
		else {
			let destDelegate = DeckTransitioningDelegate()
			destination.modalPresentationStyle = .custom
			destination.transitioningDelegate = destDelegate
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            // present the detail view over the search controller if we're searching
            if searchController.isActive {
                searchController.present(destination, animated: true, completion: nil)
            }
            else {
                present(destination, animated: true, completion: nil)
            }
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		}
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	}
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    func configureSearchController() {
        searchController.searchResultsUpdater = self
        searchController.obscuresBackgroundDuringPresentation = false
        
        // add it to the navigationItem
        navigationItem.searchController = searchController
        navigationItem.hidesSearchBarWhenScrolling = true
    }
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	override func viewDidLoad() {
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        super.viewDidLoad()
		
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		self.definesPresentationContext = true
		
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		if(traitCollection.forceTouchCapability == .available) {
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			registerForPreviewing(with: self, sourceView: self.LocationsList!)
		}
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        navigationItem.title = "What's Open"
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		navigationController?.navigationBar.prefersLargeTitles = true
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		navigationItem.largeTitleDisplayMode = .always
		
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        configureSearchController()
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		LocationsListLayout.invalidateLayout()
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		settingsButton.accessibilityLabel = "Settings"
		LastUpdatedLabel.accessibilityHint = ""
		
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		LocationsListLayout.sectionInset = UIEdgeInsetsMake(10, 10, 10, 10)
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		refreshControl.addTarget(self, action: #selector(refresh), for: .valueChanged)
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		LocationsList.refreshControl = refreshControl
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		LocationsList.alwaysBounceVertical = true
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		/*
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		let defaults = UserDefaults.standard
		let facilitiesFromDefaults = defaults.object(forKey: "FacilitiesList") as! List<Facility>?
	  	let lastUpdatedList = defaults.object(forKey: "lastUpdatedList") as! Date?
		if(facilitiesFromDefaults == nil || lastUpdatedList == nil) {
			refresh(self)
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		}
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		else if(lastUpdatedList! < Date(timeIntervalSinceNow: -86400.0)) {
			refresh(self)
		}
		else {
			facilitiesArray = facilitiesFromDefaults!
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		}
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		*/
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		refresh(self, forceUpdate: false)
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		LocationsList.reloadData()
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	}
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    func isSearchBarEmpty() -> Bool {
        return searchController.searchBar.text?.isEmpty ?? true
    }
    
    func isSearching() -> Bool {
        return searchController.isActive && !isSearchBarEmpty()
    }
    
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    /**
     Filters facilities based on the text inputted into the search controller.
     
     - parameters:
        - searchText: text used to filter the facilities.
     - returns:
        List of filtered facilities. Facilities whose names, buildings, or categories match the search text are included.
     */
    func filterFacilitiesForSearchText(_ searchText: String) -> List<Facility> {
        var filtered: List<Facility>
        
        if showFavorites {
            let favoriteFacilities = filterFacilitiesForFavorites()
            
            if searchText == "" { // if the search text is empty, just return the favorites.
                filtered = favoriteFacilities
            } else {
                filtered = favoriteFacilities.filter({(facility: Facility) -> Bool in
                    let hasName = facility.facilityName.lowercased().contains(searchText.lowercased())
                    let hasBuilding = facility.facilityLocation?.building.lowercased().contains(searchText.lowercased()) ?? false
                    let hasCategory = facility.category?.categoryName.lowercased().contains(searchText.lowercased()) ?? false
                    
                    return hasName || hasBuilding || hasCategory
                })
            }
            
        } else {
            filtered = facilitiesArray.filter({(facility: Facility) -> Bool in
                let hasName = facility.facilityName.lowercased().contains(searchText.lowercased())
                let hasBuilding = facility.facilityLocation?.building.lowercased().contains(searchText.lowercased()) ?? false
                let hasCategory = facility.category?.categoryName.lowercased().contains(searchText.lowercased()) ?? false
                
                return hasName || hasBuilding || hasCategory
            })
        }
        
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        LocationsList.reloadData()
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        return filtered
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    }
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	func refresh(_ sender: Any, forceUpdate: Bool = true) {
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		refreshControl.beginRefreshing()
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		if(forceUpdate) {
			update(sender);
		}
		else {
			let results = realm.objects(FacilitiesModel.self)
			if results.count > 0 {
				let model = results[0]
				let facilities = model.facilities
				let lastUpdated = model.lastUpdated
				
				if(facilities.isEmpty || lastUpdated < Date(timeIntervalSinceNow: -86400.0)) {
					update(sender)
				}
				else {
					facilitiesArray = facilities
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					self.LastUpdatedLabel.title = "Updated: " + self.shortDateFormat(lastUpdated)
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				}
			}
			else {
				update(sender)
			}

		}
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		LocationsList.reloadData()
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		// Add locations and categories to filters
		for f in facilitiesArray {
			if(!filters.onlyFromCategories.keys.contains((f.category?.categoryName)!)) {
				filters.onlyFromCategories.updateValue(true, forKey: (f.category?.categoryName)!)
			}
			if(!filters.onlyFromLocations.keys.contains((f.facilityLocation?.building)!)) {
				filters.onlyFromLocations.updateValue(true, forKey: (f.facilityLocation?.building)!)
			}
		}
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		refreshControl.endRefreshing()
	}
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	func update(_ sender: Any) {
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		SRCTNetworkController.performDownload { (facilities) in
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			if(facilities == nil) {
				DispatchQueue.main.async {
					let results = self.realm.objects(FacilitiesModel.self)
					if results.count > 0 {
						let model = results[0]
						let facilitiesFromDB = model.facilities
						let lastUpdated = model.lastUpdated
						
						self.facilitiesArray = facilitiesFromDB
						self.LocationsList.reloadData()
						self.LastUpdatedLabel.title = "Updated: " + self.shortDateFormat(lastUpdated)
					}
					else {
						self.facilitiesArray = List<Facility>()
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					}
				}
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			}
			else {
				self.facilitiesArray = facilities!
				
				DispatchQueue.main.async {
					//let defaults = UserDefaults.standard
					//defaults.set(facilities, forKey: "FacilitiesList")
					let date = Date()
					//defaults.set(date, forKey: "lastUpdatedList")
					self.LocationsList.reloadData()
					self.LastUpdatedLabel.title = "Updated: " + self.shortDateFormat(date)
					let model = FacilitiesModel()
					model.facilities = facilities!
					model.lastUpdated = date
					let results = self.realm.objects(FacilitiesModel.self)
					if results.count == 0 {
						try! self.realm.write {
							self.realm.add(model)
						}
					}
					else {
						let fromRealm = results[0]
						try! self.realm.write {
							fromRealm.facilities = model.facilities
							fromRealm.lastUpdated = model.lastUpdated
						}
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					}
				}
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			}
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		}
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	}
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	func shortDateFormat(_ date: Date) -> String {
		let dateFormatter = DateFormatter()
		dateFormatter.dateStyle = .short
		dateFormatter.timeStyle = .short

		// US English Locale (en_US)
		dateFormatter.locale = Locale(identifier: "en_US")
		return dateFormatter.string(from: date)
	}
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    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
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	func numberOfSections(in collectionView: UICollectionView) -> Int {
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		return 1
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	}
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	func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
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        return isSearching() || showFavorites ? self.filteredFacilities.count : self.facilitiesArray.count
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	}
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	func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
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		let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionCell", for: indexPath) as! FacilityCollectionViewCell
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		/*
		let windowRect = self.view.window!.frame
		let windowWidth = windowRect.size.width
		if(windowWidth <= 320) {
			cell.frame.size.width = 280
		}
		*/
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        //Get tap of the cell
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		cell.tapRecognizer.addTarget(self, action: #selector(FacilitiesListViewController.tapRecognizer(_:)))
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        cell.gestureRecognizers = []
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		cell.gestureRecognizers?.append(cell.tapRecognizer)
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        let facility: Facility
        let dataArray: [Facility]
        
        // if something has been searched for, we want to use the filtered array as the data source
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        if isSearching() || showFavorites {
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            dataArray = placeOpenFacilitiesFirstInArray(filteredFacilities)
        } else {
            dataArray = placeOpenFacilitiesFirstInArray(facilitiesArray)
        }
        
		facility = dataArray[indexPath.row]
        
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		cell.facility = facility
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        //set labels
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		cell.nameLabel.text = facility.facilityName
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        cell.categoryLabel.text = facility.category?.categoryName.uppercased()
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        cell.openClosedLabel.text = Utilities.openOrClosedUntil(facility)
        
        cell.timeDescriptionLabel.text = facility.facilityLocation?.building

        //change appearence based on open state
        let open = Utilities.isOpen(facility: facility)
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		if(open == true) {
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			//cell.openClosedLabel.text = "Open"
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			cell.openClosedLabel.textColor = UIColor.black
			cell.openClosedLabel.backgroundColor = UIColor.white
			//cell.openClosedLabel.backgroundColor = UIColor(red:0.00, green:0.40, blue:0.20, alpha:1.0)
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			cell.backgroundColor = UIColor(red:0.00, green:0.40, blue:0.20, alpha:1.0)
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		} else {
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			//cell.openClosedLabel.text = "Closed"
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			cell.openClosedLabel.textColor = UIColor.white
			cell.openClosedLabel.backgroundColor = UIColor.black
			//cell.openClosedLabel.backgroundColor = UIColor.red
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			cell.backgroundColor = UIColor.red

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		}
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        //Accessibility
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        //TODO: FIX THIS
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		cell.accessibilityLabel = cell.nameLabel.text! + ", Currently " + cell.openClosedLabel.text! + "." + cell.timeDescriptionLabel.text!
		cell.accessibilityHint = "Double Tap to view details"

		
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		self.reloadInputViews()
		return cell
	}
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	func getLocationArray(_ facilitiesArray: List<Facility>) -> [Facility] {
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		if(!showFavorites) {
			return placeOpenFacilitiesFirstInArray(facilitiesArray)
		}
		else {
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			return placeOpenFacilitiesFirstInArray(filteredFacilities)
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		}
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	}
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	// Returns an array which has the open locations listed first
	// Could be improved in the future because currently this means you're checking
	// open status twice per cell
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	func placeOpenFacilitiesFirstInArray(_ facilitiesArray: List<Facility>) -> [Facility] {
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		var open = [Facility]()
		var closed = [Facility]()
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		for i in facilitiesArray {
			if(Utilities.isOpen(facility: i)) {
				open.append(i)
			}
			else {
				closed.append(i)
			}
		}
		// Test
		return open + closed
	}
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	func countForOpenAndClosedFacilities(_ facilitiesArray: Array<Facility>) -> (open: Int, closed: Int) {
		var open = 0
		var closed = 0
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		for i in facilitiesArray {
			if(Utilities.isOpen(facility: i)) {
				open += 1
			}
			else {
				closed += 1
			}
		}
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		return (open, closed)
	}
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    // MARK: - Navigation

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    //In a storyboard-based application, you will often want to do a little preparation before navigation
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    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destinationViewController.
        if(segue.identifier == "toDetailView") {
            let destination = segue.destination as! FacilityDetailViewController
            let destDelegate = DeckTransitioningDelegate()
            destination.transitioningDelegate = destDelegate
            let tapped = sender as! FacilityCollectionViewCell //this is probably a bad idea just FYI future me
            destination.facility = tapped.facility

            // if we're in the search view, present on its controller
            if searchController.isActive {
                searchController.present(destination, animated: true, completion: nil)
            } else {
                present(destination, animated: true, completion: nil)
            }
        }
        else if(segue.identifier == "toFilters") {
            let destination = segue.destination as! UINavigationController
            let filterView = destination.topViewController as! FiltersTableViewController
			filterView.facilities = self.facilitiesArray
            filterView.filters = self.filters
        }

        // Pass the selected object to the new view controller.
    }
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	// MARK: - Peek and Pop
	
	func previewingContext(_ previewingContext: UIViewControllerPreviewing, viewControllerForLocation location: CGPoint) -> UIViewController? {
		guard let indexPath = LocationsList?.indexPathForItem(at: location) else { return nil }
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		let cell = LocationsList?.cellForItem(at: indexPath) as! FacilityCollectionViewCell
		guard let detailView = storyboard?.instantiateViewController(withIdentifier: "detailView") as? FacilityDetailViewController else { return nil }
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		detailView.facility = cell.facility
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		return detailView
	}
	
	func previewingContext(_ previewingContext: UIViewControllerPreviewing, commit viewControllerToCommit: UIViewController) {
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		let destDelegate = DeckTransitioningDelegate()
		viewControllerToCommit.modalPresentationStyle = .custom
		viewControllerToCommit.transitioningDelegate = destDelegate
		//If one day 3D touch comes to the iPad, this is no longer good.
		present(viewControllerToCommit, animated: true, completion: nil)
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	}
	
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}
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// by implementing UISearchResultsUpdating, we can use this controller for the search controller
extension FacilitiesListViewController: UISearchResultsUpdating {
    func updateSearchResults(for searchController: UISearchController) {
        let searchText = searchController.searchBar.text ?? ""
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        filteredFacilities = filterFacilitiesForSearchText(searchText)
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    }
}

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