const h = require("hyperscript");


/**
 * Creates a header element with the given title and description.
 *
 * @param title {string} the title to display
 * @param description {string} the description to display
 * @returns {HTMLElement} a header element
 */
exports.header = function ({title, description}) {
    return h("header.header",
        h("section.container",
            h("h1", title),
            h("p", h("em", description))
        )
    );
}

/**
 * Creates a footer element with the given data.
 *
 * @param [author] {string} the author
 * @param [authorURL] {string} the URL to link the author's name to
 * @param [license] {string} the type of license
 * @param [licenseURL] {string} the URL to the license file
 * @param [vcs] {string} the type of version control
 * @param [vcsURL] {string} the URL to the repository
 * @param [version] {string} the page version
 * @returns {HTMLElement} a footer element
 */
exports.footer = function ({author, authorURL, license, licenseURL, vcs, vcsURL, version}) {
    return h("footer.footer",
        h("section.container",
            footerLink("Made by ", author, authorURL, ". "),
            footerLink("Licensed under the ", license, licenseURL, ". "),
            footerLink("Source code available on ", vcs, vcsURL, ". "),
            h("div", version || "", {style: {"float": "right"}})
        )
    );
}


/**
 * Constructs a link that is used in footers.
 *
 * @param prefix {string} the text to display before the text if the text is not undefined
 * @param text {string|undefined} the text to display, or `undefined` if the returned element should be empty
 * @param url {string|undefined} the URL to link the text to, or `undefined` if the text should not be a link
 * @param suffix {string} the text to display after the text if the text is not undefined
 * @returns {HTMLElement} a footer link element
 */
const footerLink = function (prefix, text, url, suffix) {
    if (text === undefined) return h("span");

    return h("span",
        h("span", prefix),
        url !== undefined
            ? h("a", text, {href: url})
            : h("span", text),
        h("span", suffix)
    );
}