//
//  ReferralView.swift
//  GME Remit
//
//  Created by Armaan Shrestha on 21/08/2022.
//  Copyright © 2022 Gobal Money Express Co. Ltd. All rights reserved.
//

import UIKit

private let reuseIdentifier = "cell"
class ReferralView: UIView {
    
    lazy var containerView: UIView = {
        let view = UIView()
        view.backgroundColor = .themeSubBackground
        view.isUserInteractionEnabled = true
        view.translatesAutoresizingMaskIntoConstraints = false
        return view
    }()
    
    private var collectionView: UICollectionView!
    
    var screenWidth = UIScreen.main.bounds.width
    var screenHeight = UIScreen.main.bounds.height
    var serviceIconSize: CGFloat = 65
    var serviceIconSpacing: CGFloat = 14
    
    public var data: [ReferralDetails]? {
        didSet {
            collectionView.reloadData()
        }
    }

    override init(frame: CGRect) {
        super.init(frame: frame)
        setup()
    }
    
    required init?(coder: NSCoder) {
        super.init(coder: coder)
        setup()
        fatalError("init(coder:) has not been implemented")
    }
    
    func setup() {
        setupView()
    }
    
    func setupView() {
        self.backgroundColor = .black
        self.addSubview(containerView)
        let layout = UICollectionViewFlowLayout()
        collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
        collectionView.delegate = self
        collectionView.dataSource = self
        collectionView.register(ReferralCell.self, forCellWithReuseIdentifier: reuseIdentifier)
        collectionView.backgroundColor = .clear
        collectionView.isScrollEnabled = true
        
        // Hide Scroll bars
        collectionView.showsHorizontalScrollIndicator = false
        collectionView.showsVerticalScrollIndicator = false
        collectionView.translatesAutoresizingMaskIntoConstraints = false
        
        // Avoids shadow of collection view cell from being clipped
        collectionView.clipsToBounds = false
        containerView.addSubview(collectionView)
        setupLayoutConstraints()
//        setupClickListiner()
    }
    
    func setupLayoutConstraints() {
        NSLayoutConstraint.activate([
            containerView.topAnchor.constraint(equalTo: safeAreaLayoutGuide.topAnchor),
            containerView.leadingAnchor.constraint(equalTo: leadingAnchor),
            containerView.trailingAnchor.constraint(equalTo: trailingAnchor),
            containerView.bottomAnchor.constraint(equalTo: safeAreaLayoutGuide.bottomAnchor)
        ])
        
        NSLayoutConstraint.activate([
            collectionView.topAnchor.constraint(equalTo: containerView.topAnchor),
            collectionView.leadingAnchor.constraint(equalTo: containerView.leadingAnchor),
            collectionView.trailingAnchor.constraint(equalTo: containerView.trailingAnchor),
            collectionView.bottomAnchor.constraint(equalTo: containerView.bottomAnchor)
        ])
    }

}

extension ReferralView: UICollectionViewDelegate, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
    public func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return data?.count ?? 0
//        return 4
    }
    
    public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath) as! ReferralCell
        let item = data![indexPath.row]
        let dates = (item.createdDate ?? "").split(separator: " ")
        let date = dates[0].replacingOccurrences(of: "/", with: "-", options: .literal, range: nil)
        cell.titleText = date
        cell.amountText = item.rewardAmount ?? ""
        cell.typeText = item.rewardType ?? ""
        
        return cell
    }
    
    public func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        let iconHeight = serviceIconSize
        return CGSize(width: collectionView.frame.width, height: iconHeight)
    }
    
    public func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
        return serviceIconSpacing
    }
}

class ReferralCell: UICollectionViewCell {
    
    lazy var wrapperView: UIView = {
        let view = UIView()
        view.backgroundColor = .clear
        view.set(cornerRadius: 5)
        view.translatesAutoresizingMaskIntoConstraints = false
        return view
    }()
    
    lazy var mainStackView: UIStackView = {
        let stackView = UIStackView()
        stackView.axis = .vertical
        stackView.spacing = 10
        stackView.translatesAutoresizingMaskIntoConstraints = false
        return stackView
    }()
    
    lazy var titleStackView : UIStackView = {
        let stackView = UIStackView()
        stackView.axis = .horizontal
        stackView.spacing = 5
        stackView.translatesAutoresizingMaskIntoConstraints = false
        return stackView
    }()
    
    lazy var titleLabel: UILabel = {
        let label = UILabel()
        label.text = "text here"
        label.font = .sanfrancisco(.semibold, size: 16)
        label.numberOfLines = 1
        label.textColor = .themeBlack
        label.translatesAutoresizingMaskIntoConstraints = false
        return label
    }()
    
    lazy var amountLabel: UILabel = {
        let label = UILabel()
        label.text = "text here"
        label.font = .sanfrancisco(.bold, size: 14)
        label.numberOfLines = 1
        label.textColor = .themeBlue
        label.translatesAutoresizingMaskIntoConstraints = false
        return label
    }()
    
    lazy var typeLabel: UILabel = {
        let label = UILabel()
        label.text = "text here"
        label.font = .sanfrancisco(.regular, size: 14)
        label.numberOfLines = 1
        label.textColor = .themeBlack
        label.translatesAutoresizingMaskIntoConstraints = false
        return label
    }()
    
    var titleText = String() {
        didSet {
            titleLabel.text = titleText
        }
    }
    
    var amountText = String() {
        didSet {
            amountLabel.text = amountText
        }
    }
    
    var verticalLine: UIView = {
        var view = UIView()
        view.backgroundColor = .themeGray2
        view.translatesAutoresizingMaskIntoConstraints = false
        return view
    }()
    
    var typeText = String() {
        didSet {
            typeLabel.text = typeText
        }
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        setupView()
    }
    
    required init?(coder: NSCoder) {
       super.init(coder: coder)
    }
    
    override func awakeFromNib() {
        super.awakeFromNib()
       
    }
    
    func setupView() {
        contentView.addSubview(wrapperView)
        wrapperView.addSubview(mainStackView)
        wrapperView.addSubview(verticalLine)
        
        mainStackView.addArrangedSubview(titleStackView)
        mainStackView.addArrangedSubview(typeLabel)
        
        titleStackView.addArrangedSubview(titleLabel)
        titleStackView.addArrangedSubview(amountLabel)
        
        setupConstraint()
    }
    
    private func setupConstraint() {
        NSLayoutConstraint.activate([
            wrapperView.topAnchor.constraint(equalTo: contentView.topAnchor),
            wrapperView.trailingAnchor.constraint(equalTo: contentView.trailingAnchor),
            wrapperView.leadingAnchor.constraint(equalTo: contentView.leadingAnchor)
        ])
        
        NSLayoutConstraint.activate([
            mainStackView.topAnchor.constraint(equalTo: wrapperView.topAnchor, constant: 20),
            mainStackView.leadingAnchor.constraint(equalTo: wrapperView.leadingAnchor, constant: 20),
            mainStackView.trailingAnchor.constraint(equalTo: wrapperView.trailingAnchor, constant: -20),
            mainStackView.bottomAnchor.constraint(equalTo: wrapperView.bottomAnchor, constant: -20)
        ])
        
        NSLayoutConstraint.activate([
            verticalLine.bottomAnchor.constraint(equalTo: wrapperView.bottomAnchor),
            verticalLine.leadingAnchor.constraint(equalTo: wrapperView.leadingAnchor, constant: 10),
            verticalLine.trailingAnchor.constraint(equalTo: wrapperView.trailingAnchor, constant: -10),
            verticalLine.heightAnchor.constraint(equalToConstant: 1)
        ])
    }
}