//  MainMenuBuilder.swift
//  GreenshotMac
//
//  A menu bar for the editor windows; the app itself lives in the status bar.

import AppKit

@MainActor
enum MainMenuBuilder {

    static func install() {
        let mainMenu = NSMenu()

        // Application menu
        let appMenuItem = NSMenuItem()
        let appMenu = NSMenu()
        appMenu.addItem(withTitle: "About GreenshotMac", action: #selector(NSApplication.orderFrontStandardAboutPanel(_:)), keyEquivalent: "")
        appMenu.addItem(.separator())
        appMenu.addItem(withTitle: "Hide GreenshotMac", action: #selector(NSApplication.hide(_:)), keyEquivalent: "h")
        appMenu.addItem(.separator())
        appMenu.addItem(withTitle: "Quit GreenshotMac", action: #selector(NSApplication.terminate(_:)), keyEquivalent: "q")
        appMenuItem.submenu = appMenu
        mainMenu.addItem(appMenuItem)

        // File
        let fileItem = NSMenuItem()
        let fileMenu = NSMenu(title: "File")
        fileMenu.addItem(withTitle: "Save", action: #selector(EditorWindowController.saveDocument(_:)), keyEquivalent: "s")
        let saveAs = NSMenuItem(title: "Save As…",
                                action: #selector(EditorWindowController.saveDocumentAs(_:)),
                                keyEquivalent: "s")
        saveAs.keyEquivalentModifierMask = [.command, .shift]
        fileMenu.addItem(saveAs)
        fileMenu.addItem(withTitle: "Print…", action: #selector(EditorWindowController.printDocument(_:)), keyEquivalent: "p")
        fileMenu.addItem(withTitle: "Share…", action: #selector(EditorWindowController.shareDocument(_:)), keyEquivalent: "")
        fileMenu.addItem(.separator())
        fileMenu.addItem(withTitle: "Close", action: #selector(NSWindow.performClose(_:)), keyEquivalent: "w")
        fileItem.submenu = fileMenu
        mainMenu.addItem(fileItem)

        // Edit
        let editItem = NSMenuItem()
        let editMenu = NSMenu(title: "Edit")
        editMenu.addItem(withTitle: "Undo", action: Selector(("undo:")), keyEquivalent: "z")
        let redo = NSMenuItem(title: "Redo", action: Selector(("redo:")), keyEquivalent: "z")
        redo.keyEquivalentModifierMask = [.command, .shift]
        editMenu.addItem(redo)
        editMenu.addItem(.separator())
        editMenu.addItem(withTitle: "Cut", action: #selector(NSText.cut(_:)), keyEquivalent: "x")
        editMenu.addItem(withTitle: "Copy", action: #selector(EditorWindowController.copy(_:)), keyEquivalent: "c")
        editMenu.addItem(withTitle: "Paste", action: #selector(NSText.paste(_:)), keyEquivalent: "v")
        editMenu.addItem(withTitle: "Duplicate", action: #selector(EditorWindowController.duplicateSelection(_:)), keyEquivalent: "d")
        editMenu.addItem(withTitle: "Delete", action: #selector(EditorWindowController.deleteSelection(_:)), keyEquivalent: "\u{8}")
        editItem.submenu = editMenu
        mainMenu.addItem(editItem)

        // Capture
        let captureItem = NSMenuItem()
        let captureMenu = NSMenu(title: "Capture")
        captureMenu.addItem(withTitle: "Region", action: #selector(CaptureMenuTarget.captureRegion), keyEquivalent: "")
        captureMenu.addItem(withTitle: "Window", action: #selector(CaptureMenuTarget.captureWindow), keyEquivalent: "")
        captureMenu.addItem(withTitle: "Full screen", action: #selector(CaptureMenuTarget.captureFullscreen), keyEquivalent: "")
        captureMenu.addItem(withTitle: "Last region", action: #selector(CaptureMenuTarget.captureLastRegion), keyEquivalent: "")
        for menuItem in captureMenu.items { menuItem.target = CaptureMenuTarget.shared }
        captureItem.submenu = captureMenu
        mainMenu.addItem(captureItem)

        // Tools
        let toolsItem = NSMenuItem()
        let toolsMenu = NSMenu(title: "Tools")
        for tool in ToolKind.allCases {
            let menuItem = NSMenuItem(title: tool.title,
                                      action: #selector(EditorWindowController.selectTool(_:)),
                                      keyEquivalent: tool.keyEquivalent)
            menuItem.keyEquivalentModifierMask = []
            menuItem.representedObject = tool.rawValue
            toolsMenu.addItem(menuItem)
        }
        toolsMenu.addItem(.separator())
        toolsMenu.addItem(withTitle: "Apply crop", action: #selector(EditorWindowController.applyCrop(_:)), keyEquivalent: "\r")
        toolsMenu.addItem(.separator())
        toolsMenu.addItem(withTitle: "Bring to Front", action: #selector(EditorWindowController.bringToFront(_:)), keyEquivalent: "")
        toolsMenu.addItem(withTitle: "Send to Back", action: #selector(EditorWindowController.sendToBack(_:)), keyEquivalent: "")
        toolsItem.submenu = toolsMenu
        mainMenu.addItem(toolsItem)

        // View
        let viewItem = NSMenuItem()
        let viewMenu = NSMenu(title: "View")
        viewMenu.addItem(withTitle: "Zoom In", action: #selector(EditorWindowController.zoomIn(_:)), keyEquivalent: "+")
        viewMenu.addItem(withTitle: "Zoom Out", action: #selector(EditorWindowController.zoomOut(_:)), keyEquivalent: "-")
        viewMenu.addItem(withTitle: "Actual Size", action: #selector(EditorWindowController.actualSize(_:)), keyEquivalent: "0")
        viewItem.submenu = viewMenu
        mainMenu.addItem(viewItem)

        NSApp.mainMenu = mainMenu
    }
}

@MainActor
final class CaptureMenuTarget: NSObject {
    static let shared = CaptureMenuTarget()

    @objc func captureRegion() { CaptureCoordinator.shared.captureRegion() }
    @objc func captureWindow() { CaptureCoordinator.shared.captureWindow() }
    @objc func captureFullscreen() { CaptureCoordinator.shared.captureFullscreen() }
    @objc func captureLastRegion() { CaptureCoordinator.shared.captureLastRegion() }
}