//
//  KMConvertSettingView.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2023/5/9.
//

import KMComponentLibrary

let kKMConvertLanugageSelectedIndex: String = "KMConvertLanugageSelectedIndex"

typealias KMConvertSettingViewPageRangeDidChangeCallback = (_ pageRange: KMPageRange) -> Void
typealias KMConvertSettingViewPageRangeDidInputFinishCallback = (_ pageRangeString: String) -> ()

// 转档 设置视图 基类
class KMConvertSettingView: KMConvertBaseView {
    private var _currentLanguage: String?
    var currentLanguage: String? {
        get {
            return self._currentLanguage
        }
        set {
            self._currentLanguage = newValue
            
            if let indexString = UserDefaults.standard.string(forKey: kKMConvertLanugageSelectedIndex), let index = Int(indexString) {
                self.ocrLanuguageIndex = index
                return
            }
        }
    }
    
    var ocrLanuguageIndex: Int = 3 {
        didSet {
            self.ocrItemView?.languageIndex = self.ocrLanuguageIndex
        }
    }
    
    var pageRangeSelectedIndex: Int = 0
    var pageRangeDidChange: KMConvertSettingViewPageRangeDidChangeCallback?
    var pageRangeDidInputFinishCallback: KMConvertSettingViewPageRangeDidInputFinishCallback?
    var lanugageDidSelected: KMValueDidChangeBlock?
    
    private var _ocrItemView: KMConvertOCRSettingItemView?
    var ocrItemView: KMConvertOCRSettingItemView? {
        get {
            return self._ocrItemView
        }
        set {
            if (self._ocrItemView != newValue) {
                self._ocrItemView = newValue
                
                newValue?.lanugageDidSelected = { [weak self] value, change in
                    guard let callback = self?.lanugageDidSelected else {
                        return
                    }
                    
                    callback(value, change)
                }
            }
        }
    }
    private var _pageRangeItemView: KMConvertPageRangeSettingItemView?
    var pageRangeItemView: KMConvertPageRangeSettingItemView? {
        get {
            return self._pageRangeItemView
        }
        set {
            if (self._pageRangeItemView != newValue) {
                self._pageRangeItemView = newValue
                newValue?.isTextDidEndCallback = true
                newValue?.itemClick = { [weak self] index, _ in
                    self?.pageRangeSelectedIndex = index
                    
                    guard let callback = self?.pageRangeDidChange else {
                        return
                    }
                    
                    var value: KMPageRange = .all
                    if index == 1 {
                        value = .current
                    } else if index == 2 {
                        value = .odd
                    } else if index == 3 {
                        value = .even
                    } else if index == 4 {
                        value = .custom
                    }
                    callback(value)
                }
                
                newValue?.textDidEndEditingCallback = { [unowned self] textString in
                    let pageRange = KMPageRange(rawValue: self.pageRangeSelectedIndex)
                    if (pageRange != .custom) {
                        return
                    }
                    
                    guard let callback = self.pageRangeDidInputFinishCallback else {
                        return
                    }
                    
                    callback(textString)
                }
            }
        }
    }
    var tipView: KMConvertSettingLimitTipView?
    
    override func initSubViews() {
        super.initSubViews()
    }
    
    override func layout() {
        super.layout()
    }
    
    var pageCount = 0 {
        didSet {
            self.pageRangeItemView?.pageCount = self.pageCount
        }
    }
    
    var ocrEnabled: Bool {
        get {
            guard let state = self.ocrItemView?.checkView.properties.checkboxType else {
                return false
            }
            return state == .selected
         }
    }
    
    func getPageRangeString() -> String {
        if let view = self.pageRangeItemView {
            return view.pageRangeValue
        }
        return ""
    }
    
    override func updateViewColor() {
        super.updateViewColor()
        
        KMMainThreadExecute {
            self.ocrItemView?.titleLabel.textColor = ComponentLibrary.shared.getComponentColorFromKey("colorText/2")
            self.pageRangeItemView?.titleLabel.textColor = ComponentLibrary.shared.getComponentColorFromKey("colorText/2")
        }
    }
}