//
//  SearchPanelView.swift
//  PrivadoVPN
//
//  Created by Zhandos Bolatbekov on 25.05.2021.
//  Copyright © 2021 Privado LLC. All rights reserved.
//

protocol SearchPanelViewInput: AnyObject {}

protocol SearchPanelViewOutput: AnyObject {
    func viewIsReady()
    func search(query: String)
    func searchCancel()
}

final class SearchPanelView: NSView {
    
    private enum Constants {
        
        enum Color {
            static let background = NSColor(red: 45, green: 51, blue: 82)
            static let searchText = NSColor.white
        }
        
        enum Geometry {
            static let height: CGFloat = 40
            static let leadingButtonLeft: CGFloat = 26.7
            static let trailingButtonRight: CGFloat = 59
            
            static let searchButtonLeft: CGFloat = 23.3
            static let searchFieldIndentX: CGFloat = 19
            static let searchFieldIndentY: CGFloat = 4
        }
        
        enum LocalizedString {
            static let sortByName = "serverlist.panelSort.sortByName"
            static let sortByLatency = "serverlist.panelSort.sortByLatency"
        }
        
        enum Image {
            static let buttonSearch = "search"
        }
    }
    
    enum ButtonTag {
        static let nameButton: Int = 1 << 10
        static let latencyButton: Int = 1 << 11
    }

    private let output: SearchPanelViewOutput
    
    private var searchField: BackgroundTextField?
    
    // MARK: - Init
    
    init(output: SearchPanelViewOutput) {
        self.output = output
        
        super.init(frame: .zero)
        
        self.translatesAutoresizingMaskIntoConstraints = false
        
        self.configureUI()
    }
    
    required init?(coder: NSCoder) { nil }
    
    // MARK: - Lifecycle
    
    override func viewDidMoveToSuperview() {
        super.viewDidMoveToSuperview()
        
        if self.superview.isExist {
            self.output.viewIsReady()
        }
    }
    
    override func viewDidUnhide() {
        super.viewDidUnhide()
        self.window?.makeFirstResponder(self.searchField?.textField)
    }
    
    override func viewDidHide() {
        super.viewDidHide()
        self.searchField?.textField.stringValue = ""
    }
    
    // MARK: - Private
    
    private func configureUI() {
        let field = self.initializeSearchField()
        self.addSubview(field)
        self.searchField = field
        NSLayoutConstraint.activate([
            field.topAnchor.constraint(equalTo: self.topAnchor),
            field.bottomAnchor.constraint(equalTo: self.bottomAnchor),
            field.leadingAnchor.constraint(equalTo: self.leadingAnchor),
            field.trailingAnchor.constraint(equalTo: self.trailingAnchor)
        ])
    }
    
    func initializeSearchField() -> BackgroundTextField {
        let searchField = BackgroundTextField(frame: .zero, textFieldType: .login, iconSize: CGSize(width: 13, height: 12))
        searchField.placeHolderFont = NSFont(name: PrivadoConstants.Font.medium, size: 12)
        searchField.coloredPlaceHolder = NSLocalizedString("serverlist.searchPanel.placeholder", comment: "")
        searchField.backgroundColor = NSColor(red: 64, green: 72, blue: 172)
        searchField.highlightBackgroundColor = NSColor(red: 64, green: 72, blue: 172)
        searchField.backgroundRadius = 6
        searchField.textField.font = NSFont(name: PrivadoConstants.Font.medium, size: 12)
        searchField.textFieldYTopOffset = 10
        searchField.textFieldYBottomOffset = 0
        searchField.textFieldTrailingOffset = 30
        searchField.textField.textColor = .white
        if let image = NSImage(named: "panel.search.icon"), let rightImage = NSImage(named: "panel.search.close") {
            searchField.iconImage = image
            searchField.rightImage = rightImage
        }
        searchField.strokeWidth = 1.5
        searchField.strokeColor = NSColor(red: 143, green: 148, blue: 220)
        searchField.rightIconSize = CGSize(width: 12, height: 12)
        searchField.rightImageTappedClosure = {
            self.output.searchCancel()
        }
        searchField.textDidChangeClosure = { text in
            self.searchFieldQueryChange(text: text)
        }
        searchField.wantsLayer = true
        return searchField
    }
}

extension SearchPanelView: SearchPanelViewInput {}

// MARK: - SearchFieldOutput

extension SearchPanelView: SearchFieldOutput {
    
    func searchFieldQueryChange(text: String) {
        self.output.search(query: text)
    }
    
    func searchFieldCancel() {}
}