import Foundation

extension Site {
    
    struct Metadata {

        let author: String

        let ignoredSubFolders: Set<String>

        let topBarTitle: String?

        /**
         The url where the site will be deployed.

         This value is required to build absolute links for link previews.
         - Note: The path does not need to contain a trailing slash.
         */
        let deployedBaseUrl: String

        let languages: [LocalizedMetadata]

        static func write(to url: URL) throws {
            try Metadata.initial.writeJSON(to: url)
        }
    }
}

extension Site.Metadata: LanguageContainer {

}

extension Site.Metadata: Codable {

}

extension Site.Metadata: Metadata {

    static let fileName = "site.json"

    static var initial: Self {
        .init(author: "Author",
              ignoredSubFolders: ["templates"],
              topBarTitle: "<b>Title</b>",
              deployedBaseUrl: "http://example.com",
              languages: [.initial])
    }
}