//
//  KMAIRewritingVC.swift
//  PDF Master
//
//  Created by wanjun on 2023/5/22.
//

import Cocoa

@objc enum KMAIRewritingState : Int {
    case AIRewriting = 0
    case AIErrorCorrection
}

class KMAIRewritingVC: NSViewController {

    @IBOutlet weak var aiRewritingLabel: NSTextField!
    @IBOutlet weak var aiRewritingSubLabel: NSTextField!
    @IBOutlet weak var rewritingBox: KMBox!
    @IBOutlet weak var rewritingLabel: NSTextField!
    @IBOutlet weak var rewritingButton: NSButton!

    @IBOutlet weak var rewritingTextBox: NSBox!
    @IBOutlet weak var rewritingTextField: NSTextField!
    @IBOutlet weak var wordsLabel: NSTextField!

    @IBOutlet weak var resultLabel: NSTextField!
    @IBOutlet weak var copyBox: KMBox!
    @IBOutlet weak var copyLabel: NSTextField!
    @IBOutlet weak var copyButton: NSButton!
    
    @IBOutlet weak var resultTextBox: NSBox!
    @IBOutlet weak var resultTextView: NSTextView!
    @IBOutlet weak var emptyImageView: NSImageView!
    
    @IBOutlet weak var errorView: NSView!
    @IBOutlet weak var errorImageView: NSImageView!
    @IBOutlet weak var errorLabel: NSTextField!
    
    var state: KMAIRewritingState = .AIRewriting
    
    var _uiState: KMAITranslationState = .None
    
    var aiRewritingStr: String = ""
    var aiErrorCorrectionStr: String = ""
    var aiRewritingResultStr: String = ""
    var aiErrorCorrectionResultStr: String = ""
    var aiRewritingErrorStr: String = ""
    var aiErrorCorrectionErrorStr: String = ""
    
    var progressController: SKProgressController?

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do view setup here.
        
        self.initLocalization()
        self.initializeUI()
    }
    
    // MARK: initialize
    
    func initializeUI() -> Void {
        self.aiRewritingLabel.textColor = NSColor(hex: "#252629")
        self.aiRewritingLabel.font = NSFont.SFProTextSemibold(20.0)
        self.aiRewritingSubLabel.textColor = NSColor(hex: "#94989C")
        self.aiRewritingSubLabel.font = NSFont.SFProTextRegular(14.0)
        self.rewritingBox.fillColor = NSColor(hex: "#BDDFFD")
        self.rewritingBox.cornerRadius = 4.0
        self.rewritingLabel.textColor = NSColor(hex: "#F7F8FA")
        self.rewritingLabel.font = NSFont.SFProTextRegular(14.0)
        self.rewritingTextBox.borderColor = NSColor(hex: "#1770F4")
        self.wordsLabel.textColor = NSColor(hex: "#94989C")
        self.wordsLabel.font = NSFont.SFProTextRegular(14.0)

        self.resultLabel.textColor = NSColor(hex: "#252629")
        self.resultLabel.font = NSFont.SFProTextSemibold(20.0)
        self.copyBox.borderColor = NSColor(hex: "#DFE1E5")
        self.copyBox.fillColor = NSColor(hex: "#EDEEF0")
        self.copyBox.cornerRadius = 4.0
        self.copyBox.borderWidth = 1.0
        self.copyLabel.textColor = NSColor(hex: "#B1B3B8")
        self.copyLabel.font = NSFont.SFProTextRegular(14.0)
        self.resultTextBox.borderColor = NSColor(hex: "#DFE1E5")
        
        self.errorView.isHidden = true
        self.errorImageView.image = NSImage(named: "icon_error")
        self.errorLabel.textColor = NSColor(hex: "#F3465B")
        self.errorLabel.font = NSFont.SFProTextRegular(12.0)
        
//        if self.state == .AIRewriting {
//            self.emptyImageView.image = NSImage(named: "ic_ai_rewriting_empty")
//        } else if self.state == .AIErrorCorrection {
//            self.emptyImageView.image = NSImage(named: "ic_ai_ErrorCorrection_empty")
//        }
    }
    
    func initLocalization() -> Void {
        switch self.state {
        case .AIRewriting:
            self.aiRewritingLabel.stringValue = NSLocalizedString("AI Rewriting", comment: "")
            self.aiRewritingSubLabel.stringValue = NSLocalizedString("Limited to 150 characters per session, 5 times per month", comment: "")
            self.rewritingLabel.stringValue = NSLocalizedString("Rewrite", comment: "")
            self.resultLabel.stringValue = NSLocalizedString("Result", comment: "")
            self.copyLabel.stringValue = NSLocalizedString("Copy", comment: "")
            self.rewritingTextField.placeholderString = NSLocalizedString("Please enter text content here...", comment: "")
            self.wordsLabel.stringValue = NSLocalizedString("0/150", comment: "")
            self.rewritingTextField.stringValue = self.aiRewritingStr
            self.resultTextView.string = self.aiRewritingResultStr
            self.emptyImageView.image = NSImage(named: "ic_ai_rewriting_empty")
            break
        case .AIErrorCorrection:
            self.aiRewritingLabel.stringValue = NSLocalizedString("AI Error Correction", comment: "")
            self.aiRewritingSubLabel.stringValue = NSLocalizedString("Limited to 150 characters per session, 5 times per month", comment: "")
            self.rewritingLabel.stringValue = NSLocalizedString("Correct", comment: "")
            self.resultLabel.stringValue = NSLocalizedString("Result", comment: "")
            self.copyLabel.stringValue = NSLocalizedString("Copy", comment: "")
            self.rewritingTextField.placeholderString = NSLocalizedString("Please enter text content here...", comment: "")
            self.wordsLabel.stringValue = NSLocalizedString("0/150", comment: "")
            self.rewritingTextField.stringValue = self.aiErrorCorrectionStr
            self.resultTextView.string = self.aiErrorCorrectionResultStr
            self.emptyImageView.image = NSImage(named: "ic_ai_ErrorCorrection_empty")
            break
        default:
            break
        }
    }
    
    // MARK: Get、Set
    
    var uiState: KMAITranslationState {
        get {
            return _uiState
        }
        set {
            _uiState = newValue
            
            self.refreshAIUI()
        }
    }
    
    // MARK: Private Methods

    func refreshAIUI() -> Void {
        self.wordsLabel.stringValue = String(format: "%d/150", self.rewritingTextField.stringValue.count)
        self.copyLabel.stringValue = NSLocalizedString("Copy", comment: "")

        if self.uiState == .CanAIRewriting || self.uiState == .CanAIErrorCorrection {
            self.rewritingBox.fillColor = NSColor(hex: "#1770F4")
            self.rewritingBox.borderWidth = 0.0
            self.rewritingLabel.textColor = NSColor(hex: "#FFFFFF")
            self.copyBox.fillColor = NSColor(hex: "#EDEEF0")
            self.copyBox.borderWidth = 1.0
            self.copyBox.borderColor = NSColor(hex: "#DFE1E5")
            self.copyLabel.textColor = NSColor(hex: "#B1B3B8")
            self.wordsLabel.textColor = NSColor(hex: "#94989C")
            self.resultTextBox.fillColor = NSColor(hex: "#FFFFFF")
            self.resultTextBox.borderWidth = 1.0
            self.rewritingBox.borderColor = NSColor(hex: "#DFE1E5")
            self.emptyImageView.isHidden = false
            self.errorView.isHidden = true
        } else if self.uiState == .CanCopy {
            self.rewritingBox.fillColor = NSColor(hex: "#1770F4")
            self.rewritingBox.borderWidth = 0.0
            self.rewritingLabel.textColor = NSColor(hex: "#FFFFFF")
            self.copyBox.fillColor = NSColor(hex: "#FFFFFF")
            self.copyBox.borderWidth = 1.0
            self.copyBox.borderColor = NSColor(hex: "#DFE1E5")
            self.copyLabel.textColor = NSColor(hex: "#252629")
            self.wordsLabel.textColor = NSColor(hex: "#94989C")
            self.resultTextBox.fillColor = NSColor(hex: "#FFFFFF")
            self.resultTextBox.borderWidth = 1.0
            self.rewritingBox.borderColor = NSColor(hex: "#DFE1E5")
            self.emptyImageView.isHidden = true
            self.errorView.isHidden = true
        } else if self.uiState == .Copyed {
            self.rewritingBox.fillColor = NSColor(hex: "#1770F4")
            self.rewritingBox.borderWidth = 0.0
            self.rewritingLabel.textColor = NSColor(hex: "#FFFFFF")
            self.copyBox.fillColor = NSColor(hex: "#36383B")
            self.copyBox.borderWidth = 0.0
            self.copyLabel.textColor = NSColor(hex: "#FFFFFF")
            self.copyLabel.stringValue = NSLocalizedString("Copied", comment: "")
            self.wordsLabel.textColor = NSColor(hex: "#94989C")
            self.resultTextBox.fillColor = NSColor(hex: "#FFFFFF")
            self.resultTextBox.borderWidth = 1.0
            self.rewritingBox.borderColor = NSColor(hex: "#DFE1E5")
            self.emptyImageView.isHidden = true
            self.errorView.isHidden = true
        } else if self.uiState == .Exceed { // 是否超过
            self.rewritingBox.fillColor = NSColor(hex: "#1770F4")
            self.rewritingBox.borderWidth = 0.0
            self.rewritingLabel.textColor = NSColor(hex: "#FFFFFF")
            self.copyBox.fillColor = NSColor(hex: "#EDEEF0")
            self.copyBox.borderWidth = 1.0
            self.copyBox.borderColor = NSColor(hex: "#DFE1E5")
            self.copyLabel.textColor = NSColor(hex: "#B1B3B8")
            self.wordsLabel.textColor = NSColor(hex: "#F3465B")
            self.resultTextBox.fillColor = NSColor(hex: "#FFFFFF")
            self.resultTextBox.borderWidth = 1.0
            self.rewritingBox.borderColor = NSColor(hex: "#F3465B")
            self.emptyImageView.isHidden = true
            self.errorView.isHidden = false
            self.errorLabel.stringValue = NSLocalizedString("Limit to 150 characters at a time", comment: "")
        } else if self.uiState == .Error {
            self.rewritingBox.fillColor = NSColor(hex: "#1770F4")
            self.rewritingBox.borderWidth = 0.0
            self.rewritingLabel.textColor = NSColor(hex: "#FFFFFF")
            self.copyBox.fillColor = NSColor(hex: "#EDEEF0")
            self.copyBox.borderWidth = 1.0
            self.copyBox.borderColor = NSColor(hex: "#DFE1E5")
            self.copyLabel.textColor = NSColor(hex: "#B1B3B8")
            if self.rewritingTextField.stringValue.count > 150 {
                self.wordsLabel.textColor = NSColor(hex: "#F3465B")
            } else {
                self.wordsLabel.textColor = NSColor(hex: "#94989C")
            }
            self.resultTextBox.fillColor = NSColor(hex: "#FFFFFF")
            self.resultTextBox.borderWidth = 1.0
            self.rewritingBox.borderColor = NSColor(hex: "#F3465B")
            self.emptyImageView.isHidden = true
            self.errorView.isHidden = false
            if self.state == .AIRewriting {
                self.errorLabel.stringValue = self.aiRewritingErrorStr
            } else if self.state == .AIErrorCorrection {
                self.errorLabel.stringValue = self.aiErrorCorrectionErrorStr
            }
        } else {
            self.rewritingBox.fillColor = NSColor(hex: "#BDDFFD")
            self.rewritingBox.borderWidth = 0.0
            self.rewritingLabel.textColor = NSColor(hex: "#F7F8FA")
            self.copyBox.fillColor = NSColor(hex: "#EDEEF0")
            self.copyBox.borderWidth = 1.0
            self.copyBox.borderColor = NSColor(hex: "#DFE1E5")
            self.copyLabel.textColor = NSColor(hex: "#B1B3B8")
            self.wordsLabel.textColor = NSColor(hex: "#94989C")
            self.resultTextBox.fillColor = NSColor(hex: "#FFFFFF")
            self.resultTextBox.borderWidth = 1.0
            self.rewritingBox.borderColor = NSColor(hex: "#DFE1E5")
            self.emptyImageView.isHidden = false
            self.errorView.isHidden = true
        }
    }
    
    func acquisition_uiState() -> Void {
        if self.state == .AIRewriting {
            if (self.aiRewritingStr.count > 0) && (self.aiRewritingResultStr.count > 0) {
                let pasteboard = NSPasteboard.general
                if pasteboard.string(forType: .string) != nil {
                    if pasteboard.string(forType: .string)!.count > 0 {
                        if pasteboard.string(forType: .string)! == self.aiRewritingResultStr {
                            self.uiState = .Copyed
                        } else {
                            self.uiState = .CanCopy
                        }
                    } else {
                        self.uiState = .CanCopy
                    }
                } else {
                    self.uiState = .CanCopy
                }
            } else if (self.aiRewritingStr.count > 0) {
                if self.aiRewritingStr.count > 150 {
                    self.uiState = .Exceed
                } else {
                    self.uiState = .CanAIRewriting
                }
            } else {
                if self.aiRewritingErrorStr.count > 0 {
                    self.uiState = .Error
                } else {
                    self.uiState = .None
                }
            }
        } else if self.state == .AIErrorCorrection {
            if (self.aiErrorCorrectionStr.count > 0) && (self.aiErrorCorrectionResultStr.count > 0) {
                let pasteboard = NSPasteboard.general
                if pasteboard.string(forType: .string) != nil {
                    if pasteboard.string(forType: .string)!.count > 0 {
                        if pasteboard.string(forType: .string)! == self.aiErrorCorrectionResultStr {
                            self.uiState = .Copyed
                        } else {
                            self.uiState = .CanCopy
                        }
                    } else {
                        self.uiState = .CanCopy
                    }
                } else {
                    self.uiState = .CanCopy
                }
            } else if (self.aiErrorCorrectionStr.count > 0) {
                if self.aiErrorCorrectionStr.count > 150 {
                    self.uiState = .Exceed
                } else {
                    self.uiState = .CanAIRewriting
                }
            } else {
                if self.aiErrorCorrectionErrorStr.count > 0 {
                    self.uiState = .Error
                } else {
                    self.uiState = .None
                }
            }
        }
    }
    
    func showProgressWindow() {
        let progress = SKProgressController()
        if self.state == .AIRewriting {
            progress.message = NSLocalizedString("Rewriting...", comment: "")
        } else if self.state == . AIErrorCorrection {
            progress.message = NSLocalizedString("Error Correcting...", comment: "")
        }
        progress.window?.backgroundColor = NSColor(hex: "#36383B")
        progress.window?.contentView?.wantsLayer = true
        progress.window?.contentView?.layer?.backgroundColor = NSColor(hex: "#36383B").cgColor
        progress.progressField.textColor = NSColor.white
        
        progress.closeBlock = { [unowned self] in
            
        }
        
        self.progressController = progress
        self.view.window?.beginSheet(progress.window!)
    }
    
    func hiddenProgressWindow() {
        if (self.progressController != nil) {
            self.view.window?.endSheet((self.progressController?.window)!)
            self.progressController = nil
        }
    }
    
    // MARK: Action
    
    @IBAction func aiRewritingAction(_ sender: NSButton) {
        if self.uiState == .CanAIRewriting || self.uiState == .CanAIErrorCorrection || self.uiState == .CanCopy || self.uiState == .Copyed || self.uiState == .Exceed || self.uiState == .Error {
            if !KMLightMemberManager.manager.isLogin() {
                KMLoginWindowController.show(window: NSApp.mainWindow!)
                return
            }

            self.errorView.isHidden = true
            DispatchQueue.main.async {
                self.showProgressWindow()
            }

            let infoDictionary = Bundle .main.infoDictionary!
            let majorVersion = infoDictionary["CFBundleShortVersionString"]
            KMRequestServerManager.manager.aiRewriting(content: self.rewritingTextField.stringValue, version: "1.0.1", state: self.state) { [unowned self] success, result in
                self.hiddenProgressWindow()

                if success {
                    let result: NSDictionary = result!.result
                    self.uiState = .CanCopy
                    
                    self.resultTextView.string = ""
                    self.resultTextView.string =  result["content"] as? String ?? ""
                    if self.state == .AIRewriting {
                        self.aiRewritingResultStr = result["content"] as? String ?? ""
                        self.aiRewritingErrorStr = ""
                    } else if self.state == .AIErrorCorrection {
                        self.aiErrorCorrectionResultStr = result["content"] as? String ?? ""
                        self.aiErrorCorrectionErrorStr = ""
                    }
                } else {
                    let result: String = result!.message
                    
                    DispatchQueue.main.async {
                        self.resultTextView.string = ""
                        self.errorLabel.stringValue = result
                        if self.state == .AIRewriting {
                            self.aiRewritingErrorStr = result
                        } else if self.state == .AIErrorCorrection {
                            self.aiErrorCorrectionErrorStr = result
                        }
                        self.uiState = .Error
                    }
                }
            }
        }
    }
    
    @IBAction func copyAction(_ sender: NSButton) {
        if self.uiState == .CanCopy || self.uiState == .Copyed {
            if !KMLightMemberManager.manager.isLogin() {
                KMLoginWindowController.show(window: NSApp.mainWindow!)
                return
            }

            let pasteboard = NSPasteboard.general
            pasteboard.clearContents()
            pasteboard.setString(self.resultTextView.string, forType: .string)
            
            self.uiState = .Copyed
        }
    }
}

extension KMAIRewritingVC: NSTextFieldDelegate {
    func controlTextDidEndEditing(_ obj: Notification) {
        let object = obj.object as! NSTextField
        
    }
    
    func controlTextDidChange(_ obj: Notification) {
        let object = obj.object as! NSTextField
        self.wordsLabel.stringValue = String(format: "%d/150", object.stringValue.count)
        
        if object.stringValue.count > 0 {
            if self.state == .AIRewriting {
                self.uiState = .CanAIRewriting
            } else if self.state == .AIErrorCorrection {
                self.uiState = .CanAIErrorCorrection
            }
        } else {
            self.uiState = .None
        }
        
        if object.stringValue.count > 150 {
            self.uiState = .Exceed
            if self.state == .AIRewriting {
                self.aiRewritingErrorStr = NSLocalizedString("Limit to 150 characters at a time", comment: "")
            } else if self.state == .AIErrorCorrection {
                self.aiErrorCorrectionErrorStr = NSLocalizedString("Limit to 150 characters at a time", comment: "")
            }
        } else {
            if self.state == .AIRewriting {
                self.aiRewritingErrorStr = ""
            } else if self.state == .AIErrorCorrection {
                self.aiErrorCorrectionErrorStr = ""
            }
        }
        
        if self.state == .AIRewriting {
            self.aiRewritingStr = object.stringValue
            self.aiRewritingResultStr = ""
            self.resultTextView.string = ""
        } else if self.state == .AIErrorCorrection {
            self.aiErrorCorrectionStr = object.stringValue
            self.aiErrorCorrectionResultStr = ""
            self.resultTextView.string = ""
        }
    }

}