//
//  KMLeftSideViewController+Search.swift
//  PDF Reader Pro
//
//  Created by tangchao on 2023/12/24.
//

import Foundation

private let _kRelevanceColumnId = NSUserInterfaceItemIdentifier(rawValue: "relevance")

// MARK: - Methods

extension KMLeftSideViewController {
    func applySearchTableHeader(_ message: String) {
        self.findTableView.tableColumn(withIdentifier: kResultsColumnId)?.headerCell.stringValue = message
        self.findTableView.headerView?.needsDisplay = true
        self.groupedFindTableView.tableColumn(withIdentifier: _kRelevanceColumnId)?.headerCell.stringValue = message
        self.groupedFindTableView.headerView?.needsDisplay = true
    }
    
    func documentDidBeginFind() {
//        [leftSideController applySearchTableHeader:[NSLocalizedString(@"Searching", @"Message in search table header") stringByAppendingEllipsis]];
        self.applySearchTableHeader(KMLocalizedString("Searching"))
        self.searchResults = []
        self.groupSearchResults = []
    }
    
    func documentDidEndFind() {
        self.applySearchTableHeader(KMLocalizedString("\(self.searchResults.count) Results"))
    }
    
    func updateFindResultHighlightsForDirection(_ direction: NSWindow.SelectionDirection) {
        var findResults: [KMSearchMode] = []
        if self.findPaneState == .singular && self.findTableView.window != nil {
            findResults = self.searchResults
        } else if self.findPaneState == .grouped && self.groupedFindTableView.window != nil {
            findResults = self.groupSearchResults[self.groupedFindTableView.clickedRow].datas
        }
        
        if (findResults.count == 0) {
            self.listView?.setHighlightedSelections(nil)
        } else {
            if direction == .directSelection {
                self.searchResultIndex = 0
            } else if (direction == .selectingNext) {
                self.searchResultIndex += 1
                if self.searchResultIndex >= findResults.count {
                    self.searchResultIndex = 0
                }
            } else if (direction == .selectingPrevious) {
                self.searchResultIndex -= 1
                if self.searchResultIndex < 0 {
                    self.searchResultIndex = findResults.count-1
                }
            }

            let currentSel = findResults[self.searchResultIndex].selection
            if currentSel.hasCharacters() {
                let page = currentSel.safeFirstPage()
                var rect = NSZeroRect

                for model in findResults {
                    if let data = page, model.selection.pages().contains(data) {
                        rect = NSUnionRect(rect, model.selection.bounds(for: data))
                    }
                }
                let FIND_RESULT_MARGIN = 50.0
                rect = NSIntersectionRect(NSInsetRect(rect, -FIND_RESULT_MARGIN, -FIND_RESULT_MARGIN), page?.bounds(for: .cropBox) ?? .zero)
                self.listView?.go(to: page)
                self.listView?.go(to: rect, on: page)
            }
            
            if self.findPaneState == .grouped && self.groupedFindTableView.window != nil {
                var sels: [CPDFSelection] = []
                for model in findResults {
                    model.selection.setColor(NSColor(red: 236/255.0, green: 241/255.0, blue: 83/255.0, alpha: 0.5))
                    sels.append(model.selection)
//                    model.selection.setColor(.yellow)
                }
                self.listView?.setHighlightedSelections(sels)
            }
            
            if currentSel.hasCharacters() {
                let bColor = NSColor(red: 236/255.0, green: 241/255.0, blue: 83/255.0, alpha: 0.5)
                let color = NSColor(red: 219/255.0, green: 220/255.0, blue: 3/255.0, alpha: 0.5)
                self.listView?.setHighlight(currentSel, forBorderColor: .clear, fill: color, animated: true)
                self.listView?.go(to: currentSel, animated: true)
                self.listView?.setCurrentSelection(currentSel, animate: true)
            }
            let mode =  self.listView?.toolMode ?? .none
            if mode == .moveToolMode || mode == .magnifyToolMode || mode == .selectToolMode {
                self.listView?.setCurrentSelection(nil, animate: false)
            }
        }
    }
}

// MARK: - Actions

extension KMLeftSideViewController {
    // 显示搜索模块
    func showSearchMode(_ searchString: String = "") {
        if self.leftView.segmentedControl.selectedSegment == 0 {
            
        } else {
            self.leftView.segmentedControl.selectedSegment = 0
        }
        
        self.searchViewController.searchField.stringValue = searchString
        self.findTableView.reloadData()
    }
    
    func search_initSubViews() {
        self.findTableView.delegate = self
        self.findTableView.dataSource = self
        self.findTableView.botaDelegate = self
        self.findTableView.menu?.delegate = self
//        self.findTableView.target = self
//        self.findTableView.doubleAction = #selector(goToSelectedFindResults)
        
        self.groupedFindTableView.delegate = self
        self.groupedFindTableView.dataSource = self
        self.groupedFindTableView.botaDelegate = self
        self.groupedFindTableView.menu?.delegate = self
        
        self.groupedFindTableView.target = self
        self.groupedFindTableView.doubleAction = #selector(goToSelectedFindResults)
    }
    
    func search_initDefalutValue() {
        self.mwcFlags.wholeWordSearch = KMDataManager.ud_integer(forKey: SKWholeWordSearchKey)
        self.mwcFlags.caseInsensitiveSearch = KMDataManager.ud_integer(forKey: SKCaseInsensitiveSearchKey)
        
        self.findTableView.backgroundColor = KMAppearance.Layout.l0Color()
        self.groupedFindTableView.backgroundColor = KMAppearance.Layout.l0Color()
        
        self.findTableView.tableColumn(withIdentifier: kPageColumnId)?.headerCell.title = KMLocalizedString("Page")
        self.groupedFindTableView.tableColumn(withIdentifier: kPageColumnId)?.headerCell.title = KMLocalizedString("Page")
        (self.groupedFindTableView.tableColumn(withIdentifier: _kRelevanceColumnId)?.dataCell as? NSCell)?.isEnabled = false
    }
    
    public func refreshUIOfSeachListIfNeed() {
        if self.type.methodType != .Search {
            return
        }
        Task { @MainActor in
            if self.searchField.stringValue.isEmpty == false {
                self.search(self.searchField)
            }
        }
    }
}

// MARK: - Menu

extension KMLeftSideViewController {
    @objc func addAnnotationsForSelections(_ sender: NSMenuItem) {
        guard let selections = sender.representedObject as? [CPDFSelection], selections.count > 0 else {
            return
        }
        for selection in selections {
            self.listView?.addAnnotation(with: CAnnotationType(rawValue: sender.tag) ?? .circle, selection: selection, page: selection.page, bounds: selection.bounds)
        }
    }
    
    @objc func selectSelections(_ sender: NSMenuItem) {
        guard let selections = sender.representedObject as? [CPDFSelection], selections.count > 0 else {
            return
        }
        self.listView?.currentSelection = CPDFSelection.selectionByAddingSelections(selections as NSArray)
    }
    
    @objc func toggleWholeWordSearch(_ sender: AnyObject?) {
        if self.mwcFlags.wholeWordSearch == 1 {
            self.mwcFlags.wholeWordSearch = 0
        } else {
            self.mwcFlags.wholeWordSearch = 1
        }
        if self.searchField.stringValue.isEmpty == false {
            self.search(self.searchField)
        }
        KMDataManager.ud_set(self.mwcFlags.wholeWordSearch, forKey: SKWholeWordSearchKey)
    }
    
    @objc func toggleCaseInsensitiveSearch(_ sender: AnyObject?) {
        if self.mwcFlags.caseInsensitiveSearch == 0 {
            self.mwcFlags.caseInsensitiveSearch = 1
        } else {
            self.mwcFlags.caseInsensitiveSearch = 0
        }
        
        if self.searchField.stringValue.isEmpty == false {
            self.search(self.searchField)
        }
        KMDataManager.ud_set(self.mwcFlags.caseInsensitiveSearch, forKey: SKCaseInsensitiveSearchKey)
    }
    
    @objc func goToSelectedFindResults(_ sender: AnyObject?) {
        guard let olView = sender as? NSTableView, olView.clickedRow != -1 else {
            NSSound.beep()
            return
        }
        self.updateFindResultHighlightsForDirection(.directSelection)
    }
}