//
//  LogViewController.swift
//  KdanAuto
//
//  Created by 朱东勇 on 2023/4/19.
//

import Cocoa

let kMaxLogLength = 81920 as Int
let kTitleBarHeight = 26 as CGFloat

class LogViewController: NSViewController, NSWindowDelegate {
    @IBOutlet var m_scrollView:NSScrollView!;
    @IBOutlet var m_logTV:NSTextView!;
    @IBOutlet var m_clearBtn:NSButton!;
    
    @IBOutlet var m_window:NSWindow!;

    var m_logString = ""
    var m_isVisable = false;
    
    static var __logVC:LogViewController? = nil
    class func shared() -> LogViewController {
        if nil == __logVC {
            var objects : NSArray!
            
            Bundle.main.loadNibNamed("LogViewController", owner: nil, topLevelObjects: &objects)
            
            for tView in objects {
                if let tv = tView as? LogViewController {
                    __logVC = tv
                }
            }
        }
        
        return __logVC!
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do view setup here.
    }
    
    ///
    func isVisable() -> Bool {
        return m_isVisable
    }
    
    // interface
    func appendLog(_ log:String?) {
        if (log != nil) {
            m_logString.append(log!);
            
            var showLog = m_logString
            if (showLog.lengthOfBytes(using: .utf8) > kMaxLogLength) {
                showLog = (m_logString as NSString).substring(from: m_logString.lengthOfBytes(using: .utf8) - kMaxLogLength);
            }
            let attString = NSAttributedString(string: showLog,
                                               attributes: [.foregroundColor : NSColor(white: 1, alpha: 1),
                                                            .strokeColor : NSColor(white: 1, alpha: 1),
                                                            .font:NSFont.systemFont(ofSize: 12)])
                                               
            let size = attString.boundingRect(with: NSMakeSize(self.m_logTV.frame.size.width, CGFLOAT_MAX))
            if (Thread.isMainThread) {
                self.m_logTV.string = "";
                self.m_logTV.textColor = NSColor.white
                self.m_logTV.textStorage?.insert(attString, at: 0)
                self.m_logTV.scrollRangeToVisible(NSMakeRange(self.m_logTV.string.count, 0))
                self.m_logTV.scroll(NSPoint(x: 0, y: -size.height))
            }else {
                DispatchQueue.main.sync {
                    self.m_logTV.string = "";
                    self.m_logTV.textColor = NSColor.white
                    self.m_logTV.textStorage?.insert(attString, at: 0)
                    self.m_logTV.scrollRangeToVisible(NSMakeRange(self.m_logTV.string.count, 0))
                }
            }
        }
    }
    
    func updateFrame(_ rect:CGRect) {
        let screenSize = NSScreen.main!.frame.size
        
        if (screenSize.width - CGRectGetMaxX(rect) > self.view.frame.size.width) {
            self.m_window.setFrame(CGRectMake(CGRectGetMaxX(rect), CGRectGetMinY(rect),
                                              self.view.frame.size.width,
                                              self.view.frame.size.height + kTitleBarHeight),
                                   display: self.m_window.isVisible);
        }else if (CGRectGetMinX(rect) > self.view.frame.size.width) {
            self.m_window.setFrame(CGRectMake(CGRectGetMinX(rect) - self.view.frame.size.width, CGRectGetMinY(rect),
                                              self.view.frame.size.width,
                                              self.view.frame.size.height + kTitleBarHeight),
                                   display: self.m_window.isVisible);
        }else {
            self.m_window.setFrame(CGRectMake((screenSize.width - self.view.frame.size.width)/2,
                                              (screenSize.height - self.view.frame.size.height + kTitleBarHeight)/2,
                                              self.view.frame.size.width,
                                              self.view.frame.size.height + kTitleBarHeight),
                                   display: self.m_window.isVisible);
        }
    }
    
    // IBAction
    @IBAction func clearLog(_ sender:NSButton) {
        m_logString = ""
        self.m_logTV.string = "";
    }
    
    @IBAction func showLogWindow(_ sender:AnyObject) {
        self.m_window.setIsVisible(true)
        m_isVisable = true;
    }
    
    @IBAction func hideLogWindow(_ sender:AnyObject) {
        self.m_window.setIsVisible(false)
        m_isVisable = false;
    }
    
    ///NSWindowDelegate
    @MainActor func windowShouldClose(_ sender: NSWindow) -> Bool {
        self.hideLogWindow(sender)
        
        return false
    }
    
}