ShellFishVC.swift

//
//  ShellFishVC.swift
//  Allergy Without StoryBoard
//
//  Created by Owen Hu on 2/19/23.
//

import UIKit

class ShellFishVC: UIViewController {
    var user = User(email: "sample@gmail.com", name: "Joe", password: "123456abc", race: Race.Asian)
    lazy var dict = UserDefaults.standard.dictionary(forKey: "UserDB")
    let allergens : [[String]] = [["Shellfish","+"],
                                  ["Egg",""],
                                  ["Peanut",""],
                                  ["Tree Nut","+"],
                                  ["Dairy",""],
                                  ["Fish",""],
                                  ["Sesame",""],
                                  ["Soybean",""],
                                  ["Wheat",""],
                                  ["Additive","+"],
                                  ["Seed","+"],
                                  ["Meat","+"],
                                  ["Fruit","+"]]
    let allergy_ls : [String] = ["Crustaceans", "Mollusks"]
    let pageTitle = UILabel()
    let warning = UILabel()
    let imageView: UIImageView = {
        let imageView = UIImageView()
        imageView.image = UIImage(named: "lobsters")
        imageView.contentMode = .scaleAspectFit
        return imageView
    }()
    let desc = UILabel()
    let segmentItems = ["Avoid", "Limit this", "Can eat"]
    var myAvoid:[String] = []
//    var myAvoid = ["Shellfish","Egg","Peanut","Tree Nut","Dairy","Fish","Sesame","Soybean","Wheat","Additive","Seed","Meat","Fruit"]
    var myLimit:[String] = []
    let scrollView = UIScrollView()
    var sgControl: [UISegmentedControl] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        view.backgroundColor = UIColor.systemBackground
        //setup layout
        pageTitle.font = UIFont.boldSystemFont(ofSize: 25)
        pageTitle.textAlignment = .center
        pageTitle.text = "My Allergens - Shellfish"
        warning.font = UIFont.boldSystemFont(ofSize: 25)
        warning.backgroundColor = UIColor.yellow
        warning.textColor = UIColor.red
        warning.textAlignment = .center
        warning.text = "Leave it if you are not sure!!!"
        desc.textAlignment = .left
        desc.text = "Shellfish allergies are usually lifelong. There are two groups of shellfisk: Crustaceans (such as shrimp, prawns, crab and lobster) and mollusks/bivalves (such as clams, mussels, oysters, scallops, squid, abalone, snail). Allery to crustaceans is more common than allergy to mollusks, with shrimp being the most common shellfish allergen for both children and adults."
        desc.numberOfLines = 10
        
        // create a vertical stack view to hold the rows of buttons
        let verticalStackView = UIStackView()
        verticalStackView.axis = .vertical
        
        // we're going to use auto-layout
        pageTitle.translatesAutoresizingMaskIntoConstraints = false
        warning.translatesAutoresizingMaskIntoConstraints = false
        save_pf_bt.translatesAutoresizingMaskIntoConstraints = false
        scrollView.translatesAutoresizingMaskIntoConstraints = false
        imageView.translatesAutoresizingMaskIntoConstraints = false
        desc.translatesAutoresizingMaskIntoConstraints = false
        verticalStackView.translatesAutoresizingMaskIntoConstraints = false
        
        // add label to view
        view.addSubview(pageTitle)
        view.addSubview(save_pf_bt)
        view.addSubview(warning)
        view.addSubview(imageView)
        view.addSubview(desc)
        
        // add Scrollview to view
        self.view.addSubview(scrollView)
        
        // add stack view to scrollView
        scrollView.addSubview(verticalStackView)
        
        for _ in 0..<allergy_ls.count{
            sgControl.append(UISegmentedControl(items: segmentItems))
        }
        
        if let arr = dict?[user.name] as? [[String]]{
            myAvoid = arr[1]
            myLimit = arr[2]
        }else{
        }
        
        for i in 0..<allergy_ls.count{
            // add row
            let row = UIStackView()
            // add it to the vertical stack view
            verticalStackView.addArrangedSubview(row)
            verticalStackView.setCustomSpacing(15, after: row)
            let lb = UILabel()
            lb.font = UIFont.boldSystemFont(ofSize: 20)
            lb.textAlignment = .left
            lb.text = allergy_ls[i]
            row.addArrangedSubview(lb)
            row.setCustomSpacing(5, after: lb)
            NSLayoutConstraint.activate([
                lb.widthAnchor.constraint(equalToConstant: 120.0),
                lb.heightAnchor.constraint(equalToConstant: 30.0),
            ])

            sgControl[i].addTarget(self, action: #selector(segmentControl(_:)), for: .valueChanged)
            if myAvoid.contains(allergy_ls[i]){
                sgControl[i].selectedSegmentIndex = 0
            } else if myLimit.contains(allergy_ls[i]){
                sgControl[i].selectedSegmentIndex = 1
            } else {
                sgControl[i].selectedSegmentIndex = 2
            }
            row.addArrangedSubview(sgControl[i])
            NSLayoutConstraint.activate([
                sgControl[i].widthAnchor.constraint(equalToConstant: 240.0),
                sgControl[i].heightAnchor.constraint(equalToConstant: 30.0),
            ])
        }
        
        // finally, let's set our constraints
        // respect safe-area
        let safeG = view.safeAreaLayoutGuide
        NSLayoutConstraint.activate([
            // constrain label
            pageTitle.topAnchor.constraint(equalTo: safeG.topAnchor, constant: 5.0),
            pageTitle.widthAnchor.constraint(equalTo: safeG.widthAnchor, multiplier: 0.75),
            pageTitle.heightAnchor.constraint(equalToConstant: 30.0),
            save_pf_bt.topAnchor.constraint(equalTo: safeG.topAnchor,constant:5.0),
            save_pf_bt.leftAnchor.constraint(equalTo: pageTitle.rightAnchor,constant: 10.0),
            save_pf_bt.widthAnchor.constraint(equalTo: safeG.widthAnchor,multiplier: 0.2),
            save_pf_bt.heightAnchor.constraint(equalToConstant: 30.0),
            // constrain label
            warning.topAnchor.constraint(equalTo: pageTitle.bottomAnchor, constant: 15.0),
            warning.widthAnchor.constraint(equalTo: safeG.widthAnchor, multiplier: 0.95),
            warning.centerXAnchor.constraint(equalTo: safeG.centerXAnchor),
            // constrain label
            imageView.topAnchor.constraint(equalTo: warning.bottomAnchor, constant: 15.0),
            imageView.widthAnchor.constraint(equalTo: safeG.widthAnchor, multiplier: 0.5),
            imageView.heightAnchor.constraint(equalToConstant: 150),
            imageView.centerXAnchor.constraint(equalTo: safeG.centerXAnchor),
            // constrain label
            desc.topAnchor.constraint(equalTo: imageView.bottomAnchor, constant: 15.0),
            desc.widthAnchor.constraint(equalTo: safeG.widthAnchor, multiplier: 0.95),
            desc.centerXAnchor.constraint(equalTo: safeG.centerXAnchor),
            // constrain scrollView
            //  10-pts from bottom of label
            //  Leading and Trailing to safe-area with 10-pts "padding"
            //  Bottom to safe-area with 50-pts "padding"
            scrollView.topAnchor.constraint(equalTo: desc.bottomAnchor, constant: 10.0),
            scrollView.leadingAnchor.constraint(equalTo: safeG.leadingAnchor, constant: 5.0),
            scrollView.trailingAnchor.constraint(equalTo: safeG.trailingAnchor, constant: -5.0),
            scrollView.bottomAnchor.constraint(equalTo: safeG.bottomAnchor, constant: -60.0),
            
            // constrain vertical stack view to scrollView Content Layout Guide
            //  8-pts all around (so we have a little "padding")
            verticalStackView.topAnchor.constraint(equalTo: scrollView.contentLayoutGuide.topAnchor, constant: 5.0),
            verticalStackView.leadingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.leadingAnchor, constant: 5.0),
            verticalStackView.trailingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.trailingAnchor, constant: -5.0),
            verticalStackView.bottomAnchor.constraint(equalTo: scrollView.contentLayoutGuide.bottomAnchor, constant: -5.0),
        ])
        //method call
//        save_pf()
        navi()
    }
    
    //method declaration
//    private func save_pf(){
//        save_pf_bt.frame = CGRect(x: 330, y: 60, width: 50, height: 30)
//        save_pf_bt.layer.cornerRadius = 10
//        save_pf_bt.layer.masksToBounds = true
//        save_pf_bt.addTarget(self, action: #selector(h1(sender: )), for: .touchUpInside)
//        view.addSubview(save_pf_bt)
//    }
    
    let user_bt : UIButton = {
        let bt = UIButton()
        bt.setImage(UIImage(systemName: "person"), for: .normal)
        bt.addTarget(self, action: #selector(User_Account), for: .touchUpInside)
        return bt
    }()
    let sb_bt : UIButton = {
        let bt = UIButton()
        bt.setImage(UIImage(systemName: "barcode"), for: .normal)
        bt.addTarget(self, action: #selector(Scan_Barcode), for: .touchUpInside)
        return bt
    }()
    let sl_bt : UIButton = {
        let bt = UIButton()
        bt.setImage(UIImage(systemName: "camera"), for: .normal)
        bt.addTarget(self, action: #selector(Scan_Label), for: .touchUpInside)
        return bt
    }()
    
    private func navi(){
        user_bt.translatesAutoresizingMaskIntoConstraints = false
        sb_bt.translatesAutoresizingMaskIntoConstraints = false
        sl_bt.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(user_bt)
        view.addSubview(sb_bt)
        view.addSubview(sl_bt)
        let safeG = view.safeAreaLayoutGuide
        NSLayoutConstraint.activate([
            user_bt.bottomAnchor.constraint(equalTo: safeG.bottomAnchor,constant: -20.0),
            user_bt.leftAnchor.constraint(equalTo: safeG.leftAnchor, constant: 20.0),
            user_bt.widthAnchor.constraint(equalToConstant: 20.0),
            user_bt.heightAnchor.constraint(equalToConstant: 20.0),
            sb_bt.bottomAnchor.constraint(equalTo: safeG.bottomAnchor,constant: -20.0),
            sb_bt.centerXAnchor.constraint(equalTo: safeG.centerXAnchor,constant: 0.0),
            sb_bt.widthAnchor.constraint(equalToConstant: 20.0),
            sb_bt.heightAnchor.constraint(equalToConstant: 20.0),
            sl_bt.bottomAnchor.constraint(equalTo: safeG.bottomAnchor,constant: -20.0),
            sl_bt.rightAnchor.constraint(equalTo: safeG.rightAnchor, constant: -20.0),
            sl_bt.widthAnchor.constraint(equalToConstant: 20.0),
            sl_bt.heightAnchor.constraint(equalToConstant: 20.0),
        ])
    }
    
    @objc func h1(sender : UIButton){
        let vc = myAllergens()
        vc.user = self.user
        var dt = UserDefaults.standard.dictionary(forKey: "UserDB")
        if let arr = dt?[user.name] as? [[String]]{
            var set1 = Set(arr[1])
            var set2 = Set(arr[2])
            for i in 0..<allergy_ls.count{
                if sgControl[i].selectedSegmentIndex == 0{
                    set1.insert(allergy_ls[i])
                    set2.remove(allergy_ls[i])
                } else if sgControl[i].selectedSegmentIndex == 1{
                    set2.insert(allergy_ls[i])
                    set1.remove(allergy_ls[i])
                } else {
                    set1.remove(allergy_ls[i])
                    set2.remove(allergy_ls[i])
                }
            }
            dt?[user.name]=[[user.email, user.password], Array(set1), Array(set2)]
            print(set1,set2)
            UserDefaults.standard.setValue(dt, forKey: "UserDB")
        } else {
        }
        vc.modalPresentationStyle = .fullScreen
        self.present(vc, animated: true)
    }
    
    let save_pf_bt : UIButton = {
        let bt = UIButton()
        bt.setTitle("Save", for: .normal)
        bt.backgroundColor = UIColor.systemGreen
        bt.layer.cornerRadius = 10
        bt.layer.masksToBounds = true
        bt.addTarget(self, action: #selector(h1(sender: )), for: .touchUpInside)
        return bt
    }()
    
//    let home_bt : UIButton = {
//        let bt = UIButton()
//        bt.setTitle("Home", for: .normal)
//        bt.backgroundColor = UIColor.systemBlue
//        return bt
//    }()
//
//    let sb_bt : UIButton = {
//        let bt = UIButton()
//        bt.setTitle("Scan Barcode", for: .normal)
//        bt.backgroundColor = UIColor.systemBlue
//        return bt
//    }()
//
//    let sl_bt : UIButton = {
//        let bt = UIButton()
//        bt.setTitle("Scan Label", for: .normal)
//        bt.backgroundColor = UIColor.systemBlue
//        return bt
//    }()
    
    @objc func segmentControl(_ sender: UISegmentedControl) {
        switch (sender.selectedSegmentIndex) {
        case 0:
            print("Avoid")
            break
        case 1:
            print("Limit")
            break
        case 2:
            print("Can eat")
            break
        default:
            break
        }
    }
    
    @objc func User_Account(sender : UIButton){
        //pushing the current VC to another T(x) --->  X
        //step one : instance or object declaration
        let vc = UserAccountInfo()
        vc.modalPresentationStyle = .fullScreen
        self.present(vc, animated : true)
    }
    
    @objc func Scan_Label(sender : UIButton){
        //pushing the current VC to another T(x) --->  X
        //step one : instance or object declaration
        let vc = ScanLabel()
        vc.modalPresentationStyle = .fullScreen
        self.present(vc, animated : true)
    }
    
    @objc func Scan_Barcode(sender : UIButton){
        //pushing the current VC to another T(x) --->  X
        //step one : instance or object declaration
        let vc = ScanBarcode()
        vc.modalPresentationStyle = .fullScreen
        self.present(vc, animated : true)
    }
}