//
//  KMCustomButtonPopMenuViewController.swift
//  PDF Master
//
//  Created by wanjun on 2023/10/7.
//

import Cocoa
import Masonry

@objc protocol KMCustomButtonPopMenuViewControllerDataSources: AnyObject {
    // pop框有多少行
    func numberOfLine() -> Int
    // pop框某行显示的文字
    func stringForLine(at index: Int) -> String?
    // 某行是否需要下划线
    func needInsertSeperateLine(at index: Int) -> Bool
    // 某行是否需要选取
    func needHightLightLine(at index: Int) -> Bool
    // 某行对应的图片
    func imageForLine(at index: Int) -> NSImage?
    // 某行是否可用
    func itemEnable(at index: Int) -> Bool
}

@objc protocol KMCustomButtonPopMenuViewControllerDelegate: AnyObject {
    func customViewButtonPopDidSelectIndex(_ index: Int)
}

@objc class KMCustomButtonPopMenuViewController: NSViewController {

    weak var dataSources: KMCustomButtonPopMenuViewControllerDataSources?
    weak var delegate: KMCustomButtonPopMenuViewControllerDelegate?

    @objc override func viewDidLoad() {
        super.viewDidLoad()
        // Do view setup here.
        
        var numberOfLine = 0
        if self.responds(to: Selector.init(("numberOfLine"))) {
            numberOfLine = self.dataSources!.numberOfLine()
        }
        if numberOfLine < 1 {
            return
        }
        
        var referenceView: NSView? = self.view
        
        for i in 0..<numberOfLine {
            var image: NSImage?
            var title: String?
            
            if self.responds(to: Selector.init(("imageForLineAtIndex:"))) {
                image = self.dataSources?.imageForLine(at: i)
                title = self.dataSources?.stringForLine(at: i)
            }
            if self.responds(to: Selector.init(("stringForLineAtIndex:"))) {
                title = self.dataSources?.stringForLine(at: i)
            }

            var v: KMPopMenuButton
            if let image1 = image {
                v = KMPopMenuButton(title: title!, image: image1, target: self, action: #selector(buttonClicked(_:)))
            } else {
                v = KMPopMenuButton(title: title!, target: self, action: #selector(buttonClicked(_:)))
            }
            
            v.isBordered = false
            v.tag = i
            
            if self.responds(to: Selector.init(("itemEnableAtIndex:"))) {
                v.isEnabled = ((self.dataSources?.itemEnable(at: i)) != nil)
            }
            
            self.view.addSubview(v)
            
            v.mas_makeConstraints { make in
                if let viewBool = referenceView?.isEqual(self.view) {
                    make?.top.equalTo()(referenceView)?.offset()(CGFloat(10))
                } else {
                    make?.top.equalTo()(referenceView?.mas_bottom)?.offset()(CGFloat(2))
                }
                make?.left.right().equalTo()(self.view)
                make?.height.offset()(24)
            }
            referenceView = v
            
            if self.responds(to: Selector.init(("needHightLightLineAtIndex:"))) {
                if let needBool = self.dataSources?.needHightLightLine(at: i) {
                    v.state = .on
                }
            }
            
            if self.responds(to: Selector.init(("needInsertSeperateLineAtIndex:"))) {
                if let needBool = self.dataSources?.needInsertSeperateLine(at: i) {
                    let box = NSBox(frame: .zero)
                    box.boxType = .separator
                    self.view.addSubview(box)
                    
                    box.mas_makeConstraints { make in
                        make?.top.equalTo()(referenceView?.mas_bottom)?.offset()(2)
                        make?.left.equalTo()(self.view)?.offset()(CGFloat(21))
                        make?.centerX.equalTo()(self.view)
                    }
                    referenceView = box
                }
            }
            
            if i == numberOfLine - 1 {
                referenceView?.mas_updateConstraints({ make in
                    make?.bottom.equalTo()(self.view)?.offset()(-10)
                })
            }
        }
    }
    
    @objc func buttonClicked(_ sender: NSButton) {
        if self.responds(to: Selector.init(("customViewButtonPopDidSelectIndex:"))) {
            self.delegate!.customViewButtonPopDidSelectIndex(sender.tag)
        }
    }
}