<?php
namespace Noesis\Forms;
defined("ABSPATH") || exit();

function frameworks(): array
{
    return apply_filters("noesis_forms_frameworks", [
        "native" => "Feather Forms (default)",
        "theme" => "Theme styles / minimal",
        "uikit" => "YOOtheme / UIkit 3",
        "bootstrap" => "Bootstrap 5",
        "tailwind" => "Tailwind CSS",
        "elementor" => "Elementor",
        "divi" => "Divi",
        "bulma" => "Bulma",
        "foundation" => "Foundation 6",
    ]);
}
function framework_classes(string $framework): array
{
    $maps = [
        "bootstrap" => [
            "grid" => "row g-4",
            "half" => "col-12 col-md-6",
            "full" => "col-12",
            "input" => "form-control",
            "select" => "form-select",
            "check" => "form-check-input",
            "label" => "form-label",
            "help" => "form-text",
            "error" => "text-danger",
            "button" => "btn btn-dark",
            "back" => "btn btn-outline-secondary",
            "success" => "alert alert-success",
            "errors" => "alert alert-danger",
        ],
        "uikit" => [
            "form" => "uk-form-stacked",
            "grid" => "uk-grid uk-grid-small",
            "half" => "uk-width-1-1 uk-width-1-2@s",
            "full" => "uk-width-1-1",
            "input" => "uk-input",
            "textarea" => "uk-textarea",
            "select" => "uk-select",
            "check" => "uk-checkbox",
            "radio" => "uk-radio",
            "label" => "uk-form-label",
            "help" => "uk-text-meta",
            "error" => "uk-text-danger",
            "button" => "uk-button uk-button-secondary",
            "back" => "uk-button uk-button-default",
            "success" => "uk-alert-success",
            "errors" => "uk-alert-danger",
        ],
        "tailwind" => [
            "grid" => "grid grid-cols-1 md:grid-cols-2 gap-6",
            "half" => "col-span-1",
            "full" => "col-span-1 md:col-span-2",
            "input" =>
                "block w-full rounded-lg border border-gray-400 bg-white px-4 py-3 text-base text-gray-800 focus:outline-2 focus:outline-offset-2 focus:outline-sky-700",
            "check" => "h-5 w-5 accent-gray-700",
            "label" => "block mb-2 font-medium text-base",
            "help" => "block mt-2 text-sm text-gray-600",
            "error" => "block mt-2 text-sm text-red-700",
            "button" =>
                "inline-flex items-center justify-center rounded-lg bg-gray-700 px-6 py-3 text-base font-semibold text-white hover:bg-red-700 focus:outline-2 focus:outline-offset-2 focus:outline-sky-700",
            "back" =>
                "rounded-lg border border-gray-300 px-6 py-3 text-base font-medium",
            "success" =>
                "rounded-xl border border-emerald-200 bg-emerald-50 p-6",
            "errors" =>
                "rounded-lg border border-red-300 bg-red-50 p-4 text-red-800",
        ],
        "elementor" => [
            "grid" => "elementor-form-fields-wrapper elementor-labels-above",
            "half" =>
                "elementor-field-group elementor-column elementor-col-50 elementor-sm-100",
            "full" =>
                "elementor-field-group elementor-column elementor-col-100",
            "input" =>
                "elementor-field elementor-size-sm elementor-field-textual",
            "check" => "elementor-field",
            "label" => "elementor-field-label",
            "button" => "elementor-button elementor-size-sm",
            "back" => "elementor-button elementor-size-sm",
            "errors" => "elementor-message elementor-message-danger",
            "success" => "elementor-message elementor-message-success",
        ],
        "divi" => [
            "wrapper" => "et_pb_contact",
            "half" => "et_pb_contact_field et_pb_contact_field_half",
            "full" => "et_pb_contact_field",
            "input" => "input",
            "check" => "input",
            "button" => "et_pb_button",
            "back" => "et_pb_button",
            "success" => "et-pb-contact-message",
            "errors" => "et-pb-contact-message",
        ],
        "bulma" => [
            "grid" => "columns is-multiline",
            "half" => "column is-half",
            "full" => "column is-full",
            "input" => "input",
            "textarea" => "textarea",
            "check" => "checkbox",
            "label" => "label",
            "help" => "help",
            "error" => "help is-danger",
            "button" => "button is-dark",
            "back" => "button is-light",
            "success" => "notification is-success is-light",
            "errors" => "notification is-danger is-light",
        ],
        "foundation" => [
            "grid" => "grid-x grid-margin-x",
            "half" => "cell small-12 medium-6",
            "full" => "cell small-12",
            "input" => "",
            "label" => "",
            "help" => "help-text",
            "error" => "form-error is-visible",
            "button" => "button",
            "back" => "button secondary",
            "success" => "callout success",
            "errors" => "callout alert",
        ],
    ];
    return apply_filters(
        "noesis_forms_framework_classes",
        $maps[$framework] ?? [],
        $framework,
    );
}
function add_classes(\WP_HTML_Tag_Processor $tags, string $classes): void
{
    foreach (explode(" ", $classes) as $class) {
        if ($class !== "") {
            $tags->add_class($class);
        }
    }
}
function adapt_markup(string $html, string $framework): string
{
    if ($framework === "native") {
        return $html;
    }
    $map = framework_classes($framework);
    $tags = new \WP_HTML_Tag_Processor($html);
    while ($tags->next_tag()) {
        $tag = $tags->get_tag();
        $type = $tags->get_attribute("type");
        $classes = explode(" ", (string) $tags->get_attribute("class"));
        $key = "";
        if (in_array("nf-wrap", $classes, true)) {
            $key = "wrapper";
        } elseif (in_array("nf-form", $classes, true)) {
            $key = "form";
        } elseif (in_array("nf-grid", $classes, true)) {
            $key = "grid";
        } elseif (in_array("nf-field", $classes, true)) {
            $key = in_array("nf-width-half", $classes, true) ? "half" : "full";
        } elseif (in_array("nf-button", $classes, true)) {
            $key = "button";
        } elseif (
            in_array("nf-back", $classes, true) ||
            in_array("nf-add-row", $classes, true) ||
            in_array("nf-remove-row", $classes, true)
        ) {
            $key = "back";
        } elseif (
            in_array("nf-help", $classes, true) ||
            in_array("nf-file-hint", $classes, true)
        ) {
            $key = "help";
        } elseif (in_array("nf-field-error", $classes, true)) {
            $key = "error";
        } elseif (in_array("nf-errors", $classes, true)) {
            $key = "errors";
        } elseif (in_array("nf-success", $classes, true)) {
            $key = "success";
        } elseif ($tag === "LABEL" && !in_array("nf-choice", $classes, true)) {
            $key = "label";
        } elseif ($tag === "INPUT" && $type !== "hidden") {
            $key = in_array($type, ["checkbox", "radio"], true)
                ? ($type === "radio" && isset($map["radio"])
                    ? "radio"
                    : "check")
                : "input";
        } elseif ($tag === "TEXTAREA") {
            $key = isset($map["textarea"]) ? "textarea" : "input";
        } elseif ($tag === "SELECT") {
            $key = isset($map["select"])
                ? "select"
                : ($framework === "bulma"
                    ? ""
                    : "input");
        }
        if ($key && isset($map[$key])) {
            add_classes($tags, $map[$key]);
        }
    }
    return apply_filters(
        "noesis_forms_framework_markup",
        $tags->get_updated_html(),
        $framework,
    );
}
function preview_page(): void
{
    if (!isset($_GET["noesis_form_preview"])) {
        return;
    }
    $id = absint($_GET["noesis_form_preview"]);
    if (
        !allowed() ||
        !wp_verify_nonce(
            sanitize_text_field(wp_unslash($_GET["_wpnonce"] ?? "")),
            "nf_preview_" . $id,
        )
    ) {
        status_header(403);
        exit("You cannot preview this form.");
    }
    $form = get_form($id);
    if (!$form) {
        status_header(404);
        exit();
    }
    $html = render_form($id, [], true);
    nocache_headers();
    header("X-Robots-Tag: noindex, nofollow");
    echo '<!doctype html><html lang="' .
        esc_attr(get_bloginfo("language")) .
        '"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><meta name="robots" content="noindex,nofollow"><title>' .
        esc_html($form["name"]) .
        " — Preview</title>";
    wp_head();
    echo '</head><body><main style="max-width:860px;padding:32px 24px;margin:auto"><p style="font:14px/1.6 system-ui;margin:0 0 26px">Form preview · Responses are not sent from this page.</p>' .
        // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- render_form escapes dynamic values by context; this authenticated preview requires the complete form HTML.
        $html .
        "</main>";
    wp_footer();
    echo "</body></html>";
    exit();
}