<?php
namespace DayTidy;

class EmptyState
{
    /**
     * @param string $message
     * @param array<string, string> $args
     * @return string
     */
    public static function error(string $message, array $args = []): string
    {
        return self::message($message, 'error', $args);
    }

    /**
     * @param string $message
     * @param array<string, string> $args
     * @return string
     */
    public static function info(string $message, array $args = []): string
    {
        return self::message($message, 'info', $args);
    }

    /**
     * @param string $message
     * @param array<string, string> $args
     * @return string
     */
    public static function success(string $message, array $args = []): string
    {
        return self::message($message, 'success', $args);
    }

    /**
     * @param string $message
     * @param array<string, string> $args
     * @return string
     */
    public static function warning(string $message, array $args = []): string
    {
        return self::message($message, 'warning', $args);
    }

    /**
     * @param string $message
     * @param string $type
     * @param array<string, string> $args
     * @return string
     */
    public static function message(string $message, string $type = 'info', array $args = []): string
    {
        $type = self::type($type);
        $class = trim(
            'daytidy-empty-state daytidy-empty-state-' . sanitize_html_class($type) . ' ' . (string) ($args['class'] ?? '')
        );

        $attributes = [
            'class' => $class,
            'role' => (string) ($args['role'] ?? self::role($type)),
            'aria-live' => (string) ($args['aria_live'] ?? self::ariaLive($type)),
        ];

        if (!empty($args['id'])) $attributes['id'] = $args['id'];

        return '<div ' . self::attributes($attributes) . '>' . $message . '</div>';
    }

    private static function type(string $type): string
    {
        return in_array($type, ['error', 'info', 'success', 'warning'], true) ? $type : 'info';
    }

    private static function role(string $type): string
    {
        return in_array($type, ['error', 'warning'], true) ? 'alert' : 'status';
    }

    private static function ariaLive(string $type): string
    {
        return in_array($type, ['error', 'warning'], true) ? 'assertive' : 'polite';
    }

    /**
     * @param array<string, string> $attributes
     * @return string
     */
    private static function attributes(array $attributes): string
    {
        $output = [];

        foreach ($attributes as $key => $value)
        {
            if ($value === '') continue;

            $output[] = sprintf('%s="%s"', esc_attr($key), esc_attr($value));
        }

        return implode(' ', $output);
    }
}