//
//  KMLeftSideViewController+Thumbnail.swift
//  PDF Master
//
//  Created by tangchao on 2024/1/12.
//

import Foundation

extension KMLeftSideViewController.Key {
    static let thumbSizeScaling = "KMThumbnailSizeScalingKey"
}

// MARK: - Actions

extension KMLeftSideViewController {
    public func refreshUIOfThumbnailIfNeed(preference: Bool = false) {
        if self.type.methodType != .Thumbnail {
            return
        }
        if preference {
            self.reloadThumbnailSize()
        }
        
        Task { @MainActor in
            self.thumbnailTableView.reloadData()
        }
    }
    
    public func reloadThumbnailDataIfNeed() {
        if self.type.methodType != .Thumbnail {
            return
        }
        self.resetThumbnails()
    }
    
    public func reloadThumbnailSize() {
        let defaultSize = roundf(KMPreference.shared.thumbPageSize)
//            var thumbnailSize = (defaultSize < TINY_SIZE + FUDGE_SIZE) ? TINY_SIZE : (defaultSize < SMALL_SIZE + FUDGE_SIZE) ? SMALL_SIZE : (defaultSize < LARGE_SIZE + FUDGE_SIZE) ? LARGE_SIZE : HUGE_SIZE
        var thumbnailSize = TINY_SIZE
        if defaultSize < TINY_SIZE + FUDGE_SIZE {
            
        } else {
            if defaultSize < SMALL_SIZE + FUDGE_SIZE {
                thumbnailSize = SMALL_SIZE
            } else {
                if defaultSize < LARGE_SIZE + FUDGE_SIZE {
                    thumbnailSize = LARGE_SIZE
                } else {
                    thumbnailSize = HUGE_SIZE
                }
            }
        }
        
        if (abs(thumbnailSize - Float(self.thumbnailCacheSize)) > FUDGE_SIZE) {
            self.thumbnailCacheSize = thumbnailSize.cgFloat
        }
        
        Task { @MainActor in
            self.thumbnailTableView.reloadData()
        }
    }
    
    // 显示缩略图模块
    func showThumbnail() {
        if self.leftView.segmentedControl.selectedSegment == 0 {
            
        } else {
            self.leftView.segmentedControl.selectedSegment = 0
        }
    }
    
    func updateThumbnail(at index: Int) {
        if index < self.thumbnails.count {
            self.thumbnails[index].dirty = true
            
            /*
             原问题：CrashKit - SKMainWindowController updateThumbnailAtPageIndex:] （[__NSArrayM objectAtIndex:]: index 9223372036854775807 beyond bounds [0 .. 17]）
             注释原因：缩略图高亮为自定义后，刷新会将高亮刷新到0行
             */
    //        [leftSideController.thumbnailTableView reloadData];
//            BOOL visible = NO;
//            PDFPage *page = [[pdfView document] pageAtIndex:anIndex];
//            if([self.pdfView.visiblePages containsObject:page]) {
//                visible = YES;
//            }
//            NSInteger curIndex = [pdfView.document indexForPage:pdfView.currentPage];
//            if (need && curIndex != anIndex && !visible) {
//                [pdfView goToPage:[[pdfView document] pageAtIndex:anIndex]];
//            }
        }
    }
    
    func allThumbnailsNeedUpdate() {
        for thumb in self.thumbnails {
            thumb.dirty = true
        }
        self.reloadThumbnailSize()
    }
    
    func thumb_selectRowIndexsIfNeed(_ indexs: IndexSet) {
        if self.type.methodType != .Thumbnail {
            return
        }
        
        if indexs.isEmpty {
            return
        }
        
        Task { @MainActor in
            self.thumbnailTableView.selectRowIndexes(indexs, byExtendingSelection: false)
            self.thumbnailTableView.scrollRowToVisible(indexs.first ?? 0)
        }
    }
    
    func thumb_initSubViews() {
        self.thumbnailZoomInButton.target = self
        self.thumbnailZoomInButton.action = #selector(thumbnailSizeScaling)
        self.thumbnailZoomInButton.tag = 1
        self.thumbnailZoomOutButton.target = self
        self.thumbnailZoomOutButton.action = #selector(thumbnailSizeScaling)
        self.thumbnailZoomOutButton.tag = 0
        
        self.thumbnailTableView.delegate = self
        self.thumbnailTableView.dataSource = self
        self.thumbnailTableView.thumbDelegate = self
        self.thumbnailTableView.botaDelegate = self
        self.thumbnailTableView.menu?.delegate = self
        
        //        [thumbnailTableView registerForDraggedTypes:@[KPDFThumbnailLocalForDraggedTypes,NSFilenamesPboardType]];
        self.thumbnailTableView.registerForDraggedTypes([.localDraggedTypes, .fileURL,.string,.pdf])
        self.thumbnailTableView.setDraggingSourceOperationMask(.every, forLocal: false)
    }
    
    func thumb_initDefalutValue() {
        self.thumbnailView.wantsLayer = true
        self.thumbnailView.layer?.backgroundColor = KMAppearance.Layout.l0Color().cgColor
        
        self.thumbnailTitleLabel.stringValue = KMLocalizedString("Thumbnails", nil)
        self.thumbnailTitleLabel.textColor = KMAppearance.Layout.h0Color()
        
        self.thumbnailZoomInButton.toolTip = KMLocalizedString("Zoom In", nil)
        self.thumbnailZoomOutButton.toolTip = KMLocalizedString("Zoom Out", nil)
        
        self.thumbnailTableView.backgroundColor = KMAppearance.Layout.l0Color()
        self.thumbnailTableView.allowsMultipleSelection = true
        self.thumbnailTableView.selectionHighlightStyle = .none
    }
}

// MARK: - Others

extension KMLeftSideViewController {}

// MARK: - KMThumbnailTableViewDelegate

extension KMLeftSideViewController: KMThumbnailTableViewDelegate {
    func tableView(_ tableView: NSTableView, highlightLevelForRow row: Int) -> UInt {
        if tableView.isEqual(to: self.thumbnailTableView) {
//            NSUInteger i, iMax = [lastViewedPages count];
//            for (i = 0; i < iMax; i++) {
//                if (row == (NSInteger)[lastViewedPages pointerAtIndex:i])
//                    return i;
//            }
        }
        return UInt.max
    }
    
    func tableView(_ tableView: NSTableView, commandSelectRow rowIndex: Int) -> Bool {
        if tableView.isEqual(to: self.thumbnailTableView) {
    //        NSRect rect = [[[pdfView document] pageAtIndex:row] boundsForBox:kPDFDisplayBoxCropBox];
    //
    //        rect.origin.y = NSMidY(rect) - 0.5 * SNAPSHOT_HEIGHT;
    //        rect.size.height = SNAPSHOT_HEIGHT;
    //        [self showSnapshotAtPageNumber:row forRect:rect scaleFactor:[pdfView scaleFactor] autoFits:NO];
            let thumbailTabCell = tableView.view(atColumn: 0, row: rowIndex, makeIfNecessary: true) as? KMThumbnailTableviewCell
            thumbailTabCell?.isSelectCell = true
            var rowIndexSet = IndexSet()
            for i in self.thumbnailTableView.selectedRowIndexes {
                rowIndexSet.insert(i)
            }
            rowIndexSet.insert(rowIndex)
            self.thumbnailTableView.selectRowIndexes(rowIndexSet, byExtendingSelection: true)
            return true
        }
        return false
    }
    
    func tableView(_ tableView: NSTableView, shiftSelectRow rowIndex: Int) -> Bool {
        if tableView.isEqual(to: self.thumbnailTableView) {
            if (self.thumbnailTableView.selectedRowIndexes.count == 0) {
                let thumbailTabCell = tableView.view(atColumn: 0, row: rowIndex, makeIfNecessary: true) as? KMThumbnailTableviewCell
                thumbailTabCell?.isSelectCell = true
                var rowIndexSet = IndexSet()
                self.thumbnailTableView.selectRowIndexes(rowIndexSet, byExtendingSelection: true)
                return true
            } else if (self.thumbnailTableView.selectedRowIndexes.count == 1 && self.thumbnailTableView.selectedRowIndexes.first == rowIndex) {
                return false
            } else {
                var fristIndex = self.thumbnailTableView.selectedRowIndexes.first ?? Int.min
                var lastIndex = self.thumbnailTableView.selectedRowIndexes.last ?? Int.max
                for idx in self.thumbnailTableView.selectedRowIndexes {
//                [leftSideController.thumbnailTableView.selectedRowIndexes enumerateIndexesUsingBlock:^(NSUInteger idx, BOOL * _Nonnull stop) {
                    if(idx < fristIndex) {
                        fristIndex = idx
                    }
                    if(idx > lastIndex) {
                        lastIndex = idx
                    }
                }
                
                if(rowIndex < fristIndex) {
                    fristIndex = rowIndex
                } else if (rowIndex > lastIndex) {
                    lastIndex = rowIndex
                }
                var rowIndexSet = IndexSet()
                for i in fristIndex ... lastIndex {
                    rowIndexSet.insert(i)
                }
                self.thumbnailTableView.selectRowIndexes(rowIndexSet, byExtendingSelection: true)
                return true
            }
        }
        return false
    }
}

// MARK: - Undo & Redo

extension KMLeftSideViewController {
    @objc dynamic func tableView(_ tv: NSTableView, rotateRowsWithIndexes rowIndexes: NSIndexSet) {
        if tv.isEqual(to: self.thumbnailTableView) {
            for idx in rowIndexes {
                if (idx != NSNotFound) {
                    let page = self.listView.document.page(at: UInt(idx))
                    (self.listView.undoManager?.prepare(withInvocationTarget: self) as AnyObject).rotatePage(page, pageAt: idx)
                    page?.rightRotate()
                    self.listView.layoutDocumentView()
                    self.resetThumbnails()
//                    NSInteger pageIndex = MIN(idx, [[pdfView document] pageCount]-1);
//                    [pdfView goToPage:[[pdfView document] pageAtIndex:pageIndex]];
                }
                self.thumbnailTableView.selectRowIndexes(rowIndexes as IndexSet, byExtendingSelection: true)
            }
        }
    }
 
    @objc dynamic func rotatePage(_ page: CPDFPage?, pageAt index: Int) {
        (self.listView.undoManager?.prepare(withInvocationTarget: self) as AnyObject).tableView(self.thumbnailTableView, rotateRowsWithIndexes: NSIndexSet(index: index))

        page?.leftRotate()
        self.listView.layoutDocumentView()
        self.resetThumbnails()
    }
    
    @objc dynamic func insertPage(_ page: CPDFPage, pageAt index: Int) {
        (self.listView.undoManager?.prepare(withInvocationTarget: self) as AnyObject).tableView(self.thumbnailTableView, deleteRowsWithIndexes: IndexSet(integer: index))
        self.listView.document.insertPageObject(page, at: UInt(index))
        self.listView.layoutDocumentView()
//        [pageLabels setArray:[[pdfView document] pageLabels]];
        self.resetThumbnails()
        let pageIndex = min(index, Int((self.listView.document?.pageCount ?? 0))-1)
        self.listView.go(toPageIndex: pageIndex, animated: false)
    }
    
    @objc dynamic func insertPages(_ selectedIndexSet: IndexSet, pageAt index: Int) {
        (self.listView.undoManager?.prepare(withInvocationTarget: self) as AnyObject).deletePages(selectedIndexSet, pageAt: index)
        self.listView.layoutDocumentView()
//        [pageLabels setArray:[[pdfView document] pageLabels]];
        self.resetThumbnails()
        
        if let pageIndex = selectedIndexSet.first {
            self.listView.go(toPageIndex: pageIndex, animated: false)
        }
    }
    
    @objc dynamic func deletePages(_ selectedIndexSet: IndexSet, pageAt index: Int) {
        (self.listView.undoManager?.prepare(withInvocationTarget: self) as AnyObject).insertPages(selectedIndexSet, pageAt: index)
        
        for idx in selectedIndexSet {
            if idx < self.listView.document.pageCount {
                self.listView.document.removePage(at: UInt(idx))
            }
        }
        
        self.listView.layoutDocumentView()
//        [pageLabels setArray:[[pdfView document] pageLabels]];
        self.resetThumbnails()
        let pageIndex = min(index, Int(self.listView.document.pageCount)-1)
        self.listView.go(toPageIndex: pageIndex, animated: false)
    }
}