#if os(macOS)
import AppKit
import SwiftUI

public struct SheetsEditorCommands: Commands {
    @FocusedValue(\.sheetEditor) private var editor
    public init() {}
    private var available: Bool { editor?.model.page != nil }
    private var writable: Bool {
        guard let model = editor?.model else { return false }
        return model.mayWrite && !model.busy && !model.hasUnconfirmedChanges
    }
    private func route(_ selector: Selector, grid: (SheetModel) -> Void) {
        if NSApp.keyWindow?.firstResponder is NSTextView {
            NSApp.sendAction(selector, to: nil, from: nil)
        } else if let model = editor?.model, model.gridFocused { grid(model) }
        else { NSApp.sendAction(selector, to: nil, from: nil) }
    }
    public var body: some Commands {

        CommandGroup(replacing: .undoRedo) {
            Button(sheetsMacString("Undo")) { route(Selector(("undo:"))) { model in Task { await model.command("/undo") } } }.keyboardShortcut("z")
            Button(sheetsMacString("Redo")) { NSApp.sendAction(Selector(("redo:")), to: nil, from: nil) }.keyboardShortcut("z", modifiers: [.command, .shift])
        }
        CommandGroup(replacing: .pasteboard) {
            Button(sheetsMacString("Cut")) { route(#selector(NSText.cut(_:))) { model in
                guard model.mayWrite, !model.busy, !model.hasUnconfirmedChanges else { return }
                model.copy(); Task { await model.clear() }
            } }.keyboardShortcut("x")
            Button(sheetsMacString("Copy")) { route(#selector(NSText.copy(_:))) { $0.copy() } }.keyboardShortcut("c")
            Button(sheetsMacString("Paste")) { route(#selector(NSText.paste(_:))) { model in Task { await model.paste() } } }.keyboardShortcut("v")
            Button(sheetsMacString("Select all")) { route(#selector(NSText.selectAll(_:))) { model in
                model.rangeText = "A1:" + Coordinate(r: model.rows - 1, c: model.cols - 1).ref
                model.selectRange()
            } }.keyboardShortcut("a")
        }
        CommandGroup(after: .pasteboard) {
            Button(sheetsMacString("Clear contents")) { if let model = editor?.model { Task { await model.clear() } } }.disabled(!writable)
            Button(sheetsMacString("Fill down")) { if let model = editor?.model { Task { await model.fill(down: true) } } }.keyboardShortcut("d").disabled(!writable)
            Button(sheetsMacString("Fill right")) { if let model = editor?.model { Task { await model.fill(down: false) } } }.disabled(!writable)
        }
        CommandMenu(sheetsMacString("Format")) {
            if let model = editor?.model {
                SheetFormatMenu(model: model)
                Button(sheetsMacString("Row and column sizes…")) { editor?.panel.wrappedValue = "Sizes" }.disabled(!writable)
                Button(sheetsMacString("Fit column to contents")) { Task { await model.fitColumn(model.selection.start.c) } }.disabled(!writable)
            }
        }
        CommandMenu(sheetsMacString("Insert")) {
            ForEach(["SUM", "AVERAGE", "COUNT", "MIN", "MAX"], id: \.self) { name in
                Button(name) { if let model = editor?.model { Task { await model.insertFunction(name) } } }.disabled(!writable)
            }
        }
        CommandMenu(sheetsMacString("Sheet")) {
            Button(sheetsMacString("Sort and filter…")) { editor?.panel.wrappedValue = "Data" }.disabled(!available)
            Button(sheetsMacString("Comments…")) { editor?.panel.wrappedValue = "Comments" }.disabled(!available)
            Button(sheetsMacString("Refresh")) { if let model = editor?.model { Task { await model.refresh() } } }.disabled(!available)
        }
    }
}
#endif