// SPDX-FileCopyrightText: 2025 The Project Pterodactyl Developers
//
// SPDX-License-Identifier: MPL-2.0

import LanguageServerProtocol

public struct Diagnostic: Equatable, Codable, Sendable {
	public typealias Severity = LanguageServerProtocol.DiagnosticSeverity

	public let message: String
	public let severity: Severity
	public let absoluteUtf16Range: Range<Int>

	init(message: String, severity: Severity, absoluteRange: Range<Int>) {
		self.message = message
		self.severity = severity
		self.absoluteUtf16Range = absoluteRange
	}

	init(message: String, absoluteRange: Range<Int>) {
		self.init(message: message, severity: Severity.error, absoluteRange: absoluteRange)
	}

	func lspRange(lineMap: LineMap) -> LanguageServerProtocol.LSPRange {
		let start = lineMap.lspPosition(at: absoluteUtf16Range.lowerBound)
		let end = lineMap.lspPosition(at: absoluteUtf16Range.upperBound)
		return LSPRange(start: start, end: end)
	}

	public func lspDiagnostic(lineMap: LineMap) -> LanguageServerProtocol.Diagnostic {
		LanguageServerProtocol.Diagnostic(
			range: lspRange(lineMap: lineMap),
			severity: severity,
			message: message
		)
	}
}