import Foundation
import XCTest
@testable import DocsKit

final class DocumentCommandsTests: XCTestCase {
    @MainActor func testTypingInheritsPreviousTextButDoesNotExtendLinksOrCrossParagraphs() throws {
        let content = NSMutableAttributedString(string: "boldplain\nnext\n")
        let strong: [String: JSONValue] = ["strong": .object([:])]
        let link: [String: JSONValue] = ["link": .object(["href": .string("https://example.com")])]
        content.addAttribute(.docsMarks, value: try JSONEncoder().encode(strong), range: NSRange(location: 0, length: 4))
        content.addAttribute(.docsMarks, value: try JSONEncoder().encode([String: JSONValue]()), range: NSRange(location: 4, length: 5))
        content.addAttribute(.docsMarks, value: try JSONEncoder().encode(link), range: NSRange(location: 10, length: 4))
        XCTAssertEqual(TextEditMapping.marks(in: content, at: 4), strong)
        XCTAssertEqual(TextEditMapping.marks(in: content, at: 4, preferFollowing: true), [:])
        XCTAssertEqual(TextEditMapping.marks(in: content, at: 10), [:])
        XCTAssertEqual(TextEditMapping.marks(in: content, at: 12), link)
        XCTAssertEqual(TextEditMapping.marks(in: content, at: 14), [:])
        let onlyBold = NSMutableAttributedString(string: "bold\n")
        onlyBold.addAttribute(.docsMarks, value: try JSONEncoder().encode(strong), range: NSRange(location: 0, length: 4))
        XCTAssertEqual(TextEditMapping.displayCommand(in: onlyBold, range: NSRange(location: 4, length: 0), replacement: "!")?["marks"], .object(strong))
    }
    @MainActor func testListConversionsTargetEachContainerOnceAndLiftFromEnd() {
        let list = CRDTNode(id: "list", type: "bullet_list")
        let first = CRDTNode(id: "first", type: "list_item")
        let second = CRDTNode(id: "second", type: "list_item")
        let paths = [
            [list, first, CRDTNode(id: "a", type: "paragraph")],
            [list, first, CRDTNode(id: "b", type: "paragraph")],
            [list, second, CRDTNode(id: "c", type: "paragraph")],
        ]
        let converted = DocumentCommands.listCommands(type: "ordered_list", paths: paths)
        XCTAssertEqual(converted.count, 1)
        XCTAssertEqual(converted.first?["node"], .string("c"))
        let lifted = DocumentCommands.listCommands(type: "bullet_list", paths: paths)
        XCTAssertEqual(lifted.map { $0["node"] }, [.string("c"), .string("b")])
    }
    @MainActor func testFormattingAcrossBlocksKeepsUTF16OffsetsAndSkipsAttachments() throws {
        let content = NSMutableAttributedString(string: "a😀b\ncd\n\u{fffc}")
        let marks = try JSONEncoder().encode([String: JSONValue]())
        content.addAttributes([.docsNode: "first", .docsMarks: marks], range: NSRange(location: 0, length: 4))
        content.addAttributes([.docsNode: "second", .docsMarks: marks], range: NSRange(location: 5, length: 2))
        content.addAttribute(.docsNode, value: "image", range: NSRange(location: 8, length: 1))
        let commands = DocumentCommands.markCommands(content: content, selection: NSRange(location: 1, length: 8), marks: ["strong": .object([:])])
        XCTAssertEqual(commands.count, 2)
        XCTAssertEqual(commands[0]["node"], .string("first"))
        XCTAssertEqual(commands[0]["at"], .number(1))
        XCTAssertEqual(commands[0]["length"], .number(3))
        XCTAssertEqual(commands[1]["node"], .string("second"))
        XCTAssertEqual(commands[1]["at"], .number(0))
        XCTAssertEqual(commands[1]["length"], .number(2))
        XCTAssertEqual(commands[1]["op"], .string("format"))
        XCTAssertNil(commands[1]["text"])
    }
    @MainActor func testExportNamesUseDocumentTitleWithoutPathOrOversizeBytes() {
        XCTAssertEqual(DocumentExportControls.filename(title: "Quarterly report", extension: "pdf"), "Quarterly report.pdf")
        XCTAssertEqual(DocumentExportControls.filename(title: "Notes.md", extension: "md"), "Notes.md")
        let name = DocumentExportControls.filename(title: "../team:notes\\draft\n" + String(repeating: "日本語", count: 100), extension: "md")
        XCTAssertFalse(name.contains("/")); XCTAssertFalse(name.contains("\\")); XCTAssertFalse(name.contains(":")); XCTAssertFalse(name.contains("\n"))
        XCTAssertLessThanOrEqual(name.utf8.count, 183)
        XCTAssertTrue(name.hasSuffix(".md"))
    }
}