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[rbdr/map] / Map / Presentation / Commands / MapCommands.swift

// Copyright (C) 2024 Rubén Beltrán del Río

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program. If not, see https://map.tranquil.systems.
import SwiftUI

struct MapCommands: Commands {

  @AppStorage("viewStyle") var viewStyle: ViewStyle = .horizontal
  @AppStorage("zoom") var zoom = 1.0
  @FocusedBinding(\.document) var document: MapDocument?
  @FocusedValue(\.fileURL) var url: URL?
  @FocusedBinding(\.selectedEvolution) var selectedEvolution: StageType?
  @FocusedBinding(\.isSearching) var isSearching

  var body: some Commands {

    // File

    CommandGroup(after: CommandGroupPlacement.saveItem) {
      Divider()
      Button("Export...") {
        if let selectedEvolution, let document {
          if let image = document.exportAsImage(withEvolution: selectedEvolution) {

            let filename = url?.deletingPathExtension().lastPathComponent ?? "Untitled"

            let savePanel = NSSavePanel()
            savePanel.allowedContentTypes = [.png]
            savePanel.canCreateDirectories = true
            savePanel.isExtensionHidden = false
            savePanel.title = "Save \(filename) as image"
            savePanel.message = "Choose a location to save the image"
            savePanel.nameFieldStringValue = "\(filename).png"
            savePanel.begin { result in
              if result == .OK, let url = savePanel.url {
                if let tiffRepresentation = image.tiffRepresentation {
                  let bitmapImage = NSBitmapImageRep(data: tiffRepresentation)
                  let pngData = bitmapImage?.representation(using: .png, properties: [:])
                  do {
                    try pngData?.write(to: url)
                  } catch {
                    return
                  }
                }
              }
            }
          }
        }
      }.keyboardShortcut(
        "e", modifiers: EventModifiers([.command])
      ).disabled(document == nil)
    }

    // Edit

    CommandGroup(after: CommandGroupPlacement.pasteboard) {
      Divider()
      Button("Find...") {
        withAnimation {
          isSearching = isSearching != nil ? !isSearching! : true
        }
      }.keyboardShortcut(
        "f", modifiers: EventModifiers([.command])
      ).disabled(document == nil)
    }

    // View

    CommandGroup(after: CommandGroupPlacement.toolbar) {
      if viewStyle == .horizontal {
        Button("Use Vertical Layout") {
          viewStyle = .vertical
        }.keyboardShortcut(
          "l", modifiers: EventModifiers([.command])
        ).disabled(document == nil)
      } else {
        Button("Use Horizontal Layout") {
          viewStyle = .horizontal
        }.keyboardShortcut(
          "l", modifiers: EventModifiers([.command])
        ).disabled(document == nil)
      }
      Divider()
      Button("Zoom In") {
        zoom = min(Constants.kMaxZoom, zoom + 0.1)
      }.keyboardShortcut(
        "+", modifiers: EventModifiers([.command])
      ).disabled(document == nil)
      Button("Zoom Out") {
        zoom = max(Constants.kMinZoom, zoom - 0.1)
      }.keyboardShortcut(
        "-", modifiers: EventModifiers([.command])
      ).disabled(document == nil)
      Divider()
    }

    CommandGroup(replacing: CommandGroupPlacement.help) {
      Button("Map Help") { NSWorkspace.shared.open(URL(string: "https://map.tranquil.systems")!) }
    }
  }
}