//
//  KMRedactTools.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2023/1/19.
//

import Cocoa

class KMRedactTools: NSObject {
    class func eraserDocument(_ document: CPDFDocument, callback: @escaping (_ result: Bool, _ errorAnno: CPDFAnnotation?) -> ()) {
        for i in 0 ..< document.pageCount {
            let page: CPDFPage = document.page(at: i)
            for anno in page.annotations {
                if ((anno.isKind(of: CPDFRedactAnnotation.self)) == false) {
                    continue
                }
                
                let result = page.erasureRedact(from: anno.bounds)
                if (result == false) {
                    callback(false, anno)
                    return
                }
            }
        }
        
        callback(true, nil)
    }
    
    class func getPageIndexs(_ type: Int, string: String, _ pageCount: Int) -> IndexSet {
        var indexs: IndexSet = []
        if (type == 1) { /// 所有页面
            for i in 0 ..< pageCount {
                indexs.insert(i)
            }
        } else if (type == 2) { /// 奇数页
            for i in 0 ..< pageCount {
                if (i % 2 == 1) {
                    continue
                }
                indexs.insert(i)
            }
        } else if (type == 3) { /// 偶数页
            for i in 0 ..< pageCount {
                if (i % 2 == 0) {
                    continue
                }
                indexs.insert(i)
            }
        } else if (type == 4) {
            let array = KMPageRangeTools.findSelectPage(pageRangeString: string, pageCount: pageCount)
            for i in array {
                indexs.insert(i-1)
            }
        }
        return indexs
    }
    
    class func createRedactAnnotation(_ document: CPDFDocument, _ anno: CPDFRedactAnnotation) -> CPDFRedactAnnotation {
        let redactAnno = CPDFRedactAnnotation(document: document)
        redactAnno?.setInteriorColor(anno.interiorColor())
        redactAnno?.setBorderColor(anno.borderColor())
        redactAnno?.setOverlayText(anno.overlayText())
        redactAnno?.setFontColor(anno.fontColor())
        redactAnno?.setAlignment(anno.alignment())
        redactAnno?.setFont(anno.font())
        
        redactAnno?.bounds = anno.bounds
        
        return redactAnno!
    }
}