//

// main.swift

// settings_chk

//

// Created by Sbarex on 20/06/25.

// Copyright © 2025 sbarex. All rights reserved.

//

import Foundation

import Yams

func usage() {

let executablePath = CommandLine.arguments[0]

let executableName = url(fileURLWithPath: executablePath).lastPathComponent

print("Usage: \(executableName) settings.yaml")

print("Check the validity of the settings.yaml file (must be a valid yaml, decodable as [String: [String: [String: String]]], with the UTIs and extesions root keys.")

print("")

}

guard CommandLine.arguments.count == 2, !CommandLine.arguments[1].isEmpty else {

print(CommandLine.arguments.count)

usage()

exit(1)

}

let filename = CommandLine.arguments[1]

guard FileManager.default.fileExists(atPath: filename) else {

print("Error: \(filename) not found!")

exit(2)

}

let data: String

if #available(macOS 13.0, *) {

var enc: String.Encoding = .utf8

guard let _data = try? String(contentsOf: url(filePath: filename), usedEncoding: &enc) else {

print("Error: unable to read \(filename)!")

exit(3)

}

data = _data

} else {

guard let _data = try? String(contentsOf: url(fileURLWithPath: filename)) else {

print("Error: unable to read \(filename)!")

exit(3)

}

data = _data

}

let raw_d: Any

do {

guard let d = try Yams.load(yaml: data) else {

print("Error: \(filename) is not a valid yaml file!")

exit(4)

}

raw_d = d

} catch {

print("Error: \(filename) is not a valid yaml file: \(error)!")

exit(4)

}

let global_nodes = ["UTIs", "extensions"]

if let a = raw_d as? [String: [String: [String: String]]] {

for node in global_nodes {

guard let _ = a[node] else {

print("Error: missing \(node) root key on \(filename)!")

exit(5)

}

}

print("\(filename) is valid.")

exit(0)

}

print("Error: \(filename) is not a valid settings file!")

if let a = raw_d as? [String: Any] {

for node_name in global_nodes {

guard let node = a[node_name] else {

print("Missing \(node_name) root key on \(filename)!")

exit(5)

}

if let node = node as? [String: Any] {

for d in node {

guard let _ = d.value as? [String: String] else {

print("\(node_name)/\(d.key): is not a [String: String]!")

exit(6)

}

}

} else {

print("\(node) is not a [String: String]!")

exit(6)

}

}

}

print(raw_d)

exit(6)