#if os(macOS)
import AppKit
import SwiftUI
import XCTest
@testable import DocsKit

final class NativeClipboardInputTests: XCTestCase {
    @MainActor func testDelegateTextReplacementAlsoRunsStructuralInputRule() {
        var commands: [[String: JSONValue]] = []
        let candidate = NativeDocumentTextView(content: NSAttributedString(string: "-\n"), generation: 1, didRender: { _ in }, compositionChanged: { _ in }, isEditable: true, paged: false, pendingInput: false, canRender: { _ in true }, currentSelection: { NSRange(location: 1, length: 0) }, selection: .constant(NSRange(location: 1, length: 0)), edit: { commands.append($0); return true })
        let coordinator = candidate.makeCoordinator()
        let text = DocsTextView(frame: CGRect(x: 0, y: 0, width: 500, height: 700))
        text.delegate = coordinator
        text.ruleCommand = coordinator.ruleEdit
        coordinator.applyRender(candidate, to: text)
        let allowed = coordinator.textView(text, shouldChangeTextIn: NSRange(location: 1, length: 0), replacementString: " ")
        XCTAssertFalse(allowed)
        XCTAssertEqual(text.string, "\n")
        XCTAssertEqual(commands.last?["op"], .string("display_autoformat"))
        XCTAssertEqual(commands.last?["generation"], .number(1))
    }
    @MainActor func testDelayedDuplicateRuleSelectionNotificationDoesNotCancelReversal() {
        var commands: [[String: JSONValue]] = []
        var selected = NSRange(location: 1, length: 0)
        let candidate = NativeDocumentTextView(content: NSAttributedString(string: "-\n"), generation: 1, didRender: { _ in }, compositionChanged: { _ in }, isEditable: true, paged: false, pendingInput: false, canRender: { _ in true }, currentSelection: { selected }, selection: Binding(get: { selected }, set: { selected = $0 }), edit: { commands.append($0); return true })
        let coordinator = candidate.makeCoordinator()
        let text = DocsTextView(frame: CGRect(x: 0, y: 0, width: 500, height: 700))
        text.delegate = coordinator; text.ruleCommand = coordinator.ruleEdit
        coordinator.applyRender(candidate, to: text)
        text.insertText(" ", replacementRange: NSRange(location: NSNotFound, length: 0))
        coordinator.textViewDidChangeSelection(Notification(name: NSTextView.didChangeSelectionNotification, object: text))
        coordinator.textViewDidChangeSelection(Notification(name: NSTextView.didChangeSelectionNotification, object: text))
        XCTAssertNotNil(text.lastInputRule)
        text.deleteBackward(nil)
        XCTAssertEqual(text.string, "- \n")
        XCTAssertEqual(commands.last?["op"], .string("display_revert_rule"))
    }
    @MainActor func testDirectDelegateBackspaceReversesRuleBeforeGenericDeletion() {
        var commands: [[String: JSONValue]] = []
        var selected = NSRange(location: 1, length: 0)
        let candidate = NativeDocumentTextView(content: NSAttributedString(string: "-\n"), generation: 1, didRender: { _ in }, compositionChanged: { _ in }, isEditable: true, paged: false, pendingInput: false, canRender: { _ in true }, currentSelection: { selected }, selection: Binding(get: { selected }, set: { selected = $0 }), edit: { commands.append($0); return true })
        let coordinator = candidate.makeCoordinator()
        let text = DocsTextView(frame: CGRect(x: 0, y: 0, width: 500, height: 700))
        text.delegate = coordinator; text.ruleCommand = coordinator.ruleEdit
        coordinator.applyRender(candidate, to: text)
        text.insertText(" ", replacementRange: NSRange(location: NSNotFound, length: 0))
        XCTAssertNotNil(text.lastInputRule)
        let allowed = coordinator.textView(text, shouldChangeTextIn: NSRange(location: 0, length: 0), replacementString: "")
        XCTAssertFalse(allowed)
        XCTAssertEqual(text.string, "- \n")
        XCTAssertEqual(commands.last?["op"], .string("display_revert_rule"))
    }
    @MainActor func testRichPasteOptimisticMarksMatchImmediateTyping() throws {
        let blocks: [JSONValue] = [.object(["type": .string("paragraph"), "children": .array([.object(["type": .string("text"), "runs": .array([.object(["insert": .string("bold😀"), "marks": .object(["strong": .object([:])])])])])])])]
        let initial = NSAttributedString(string: "AB\n")
        let insertion = try XCTUnwrap(DocumentClipboardInsertion.attributed(blocks: blocks, in: initial, range: NSRange(location: 1, length: 0)))
        let optimistic = NSMutableAttributedString(attributedString: initial)
        optimistic.replaceCharacters(in: NSRange(location: 1, length: 0), with: insertion)
        XCTAssertEqual(optimistic.string, "Abold😀B\n")
        let command = try XCTUnwrap(TextEditMapping.displayCommand(in: optimistic, range: NSRange(location: 7, length: 0), replacement: "!"))
        XCTAssertEqual(command["at"], .number(7))
        XCTAssertEqual(command["marks"], .object(["strong": .object([:])]))
    }
    @MainActor func testNativeSpaceRuleAndImmediateBackspaceRestorePrefix() {
        let text = DocsTextView(frame: CGRect(x: 0, y: 0, width: 500, height: 700))
        text.textStorage?.setAttributedString(NSAttributedString(string: "-\n"))
        text.setSelectedRange(NSRange(location: 1, length: 0))
        var commands: [[String: JSONValue]] = []
        text.ruleCommand = { commands.append($0); return true }
        text.insertText(" ", replacementRange: NSRange(location: NSNotFound, length: 0))
        XCTAssertEqual(text.string, "\n")
        XCTAssertEqual(text.selectedRange().location, 0)
        XCTAssertEqual(commands.last?["op"], .string("display_autoformat"))
        text.deleteBackward(nil)
        XCTAssertEqual(text.string, "- \n")
        XCTAssertEqual(commands.last?["op"], .string("display_revert_rule"))
        let terminatorStyle = text.attributedString().attribute(.paragraphStyle, at: 2, effectiveRange: nil) as? NSParagraphStyle
        XCTAssertTrue(terminatorStyle?.textLists.isEmpty == true, "The restored paragraph terminator must not continue an old native list")
    }
    @MainActor func testImmediateSecondReturnLeavesEmptyNativeListWithoutAddingText() {
        let text = DocsTextView(frame: CGRect(x: 0, y: 0, width: 500, height: 700))
        text.textStorage?.setAttributedString(NSAttributedString(string: "-\n"))
        text.setSelectedRange(NSRange(location: 1, length: 0))
        var commands: [[String: JSONValue]] = []
        text.ruleCommand = { commands.append($0); return true }
        text.insertText(" ", replacementRange: NSRange(location: NSNotFound, length: 0))
        text.insertText("\n", replacementRange: NSRange(location: NSNotFound, length: 0))
        XCTAssertEqual(text.string, "\n")
        XCTAssertEqual(commands.last?["op"], .string("display_exit_list"))
    }
}
#endif