struct IconCommandProcessor: CommandProcessor {

    let commandType: ShorthandMarkdownKey = .icons

    let results: PageGenerationResults

    init(content: Content, results: PageGenerationResults) {
        self.results = results
    }
    
    func process(_ arguments: [String], markdown: Substring) -> String {
        var icons = [PageIcon]()
        for argument in arguments {
            guard let icon = PageIcon(rawValue: argument) else {
                results.invalid(command: .icons, markdown)
                continue
            }
            icons.append(icon)
        }
        results.require(icons: icons)
        return ""
    }
}