import Elementary
import Foundation
import Infrastructure
import Localization

/// The HTML page rendered for a not-found response, with its text localized to a given locale.
struct ErrorPage {

    // MARK: Properties

    /// The version token appended to the page's asset URLs, or `nil` to leave them unversioned.
    let assetVersion: String?

    /// The locale the page content is localized to.
    let locale: Locale

    /// Resolves the page's text from the bundled String Catalog for the page's ``locale``.
    private let localize: Localize

    // MARK: Initializers

    /// Creates a not-found page localized to the given locale.
    /// - Parameters:
    ///   - locale: the locale the page content is localized to.
    ///   - assetVersion: the version token appended to the page's asset URLs, or `nil` (the
    ///     default) to leave them unversioned.
    init(
        locale: Locale,
        assetVersion: String? = nil
    ) {
        self.assetVersion = assetVersion
        self.locale = locale
        self.localize = .init(bundle: .module)
    }
}

// MARK: Page

extension ErrorPage: Page {

    // MARK: Properties

    var content: some HTML {
        h1 {
            localize("error.heading", locale: locale)
        }
        p {
            localize("error.message", locale: locale)
        }
    }

    var scripts: [any Asset] {
        [StaticFile.error, StaticFile.shared]
    }

    var stylesheets: [any Asset] {
        [StaticFile.shared, StaticFile.error]
    }

    var title: String {
        localize("error.title", locale: locale)
    }

}