<?php
/**
 * Icon Sets class - Static definitions of all preset icon sets.
 *
 * @package MapleIcons
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

/**
 * Class MI_Icon_Sets
 *
 * Provides static definitions and utilities for preset icon sets.
 */
class MI_Icon_Sets {

    /**
     * Get all available preset icon sets.
     *
     * @return array Array of icon set configurations.
     */
    public static function get_all() {
        return array(
            'heroicons' => array(
                'slug'          => 'heroicons',
                'name'          => 'Heroicons',
                'version'       => '2.1.1',
                'license'       => 'MIT',
                'url'           => 'https://heroicons.com',
                'cdn_base'      => 'https://cdn.jsdelivr.net/npm/heroicons@2.1.1/',
                'styles'        => array(
                    'outline' => array(
                        'path'  => '24/outline',
                        'label' => 'Outline',
                    ),
                    'solid'   => array(
                        'path'  => '24/solid',
                        'label' => 'Solid',
                    ),
                    'mini'    => array(
                        'path'  => '20/solid',
                        'label' => 'Mini',
                    ),
                ),
                'default_style' => 'outline',
                'viewbox'       => '0 0 24 24',
                'normalize'     => false,
                'color_fix'     => false,
                'description'   => 'Beautiful hand-crafted SVG icons by the makers of Tailwind CSS.',
                'icon_count'    => 292,
            ),
            'lucide'    => array(
                'slug'          => 'lucide',
                'name'          => 'Lucide',
                'version'       => '0.303.0',
                'license'       => 'ISC',
                'url'           => 'https://lucide.dev',
                'cdn_base'      => 'https://cdn.jsdelivr.net/npm/lucide-static@0.303.0/',
                'styles'        => array(
                    'icons' => array(
                        'path'  => 'icons',
                        'label' => 'Default',
                    ),
                ),
                'default_style' => 'icons',
                'viewbox'       => '0 0 24 24',
                'normalize'     => false,
                'color_fix'     => false,
                'description'   => 'Beautiful & consistent icon toolkit made by the community.',
                'icon_count'    => 1411,
            ),
            'feather'   => array(
                'slug'          => 'feather',
                'name'          => 'Feather',
                'version'       => '4.29.1',
                'license'       => 'MIT',
                'url'           => 'https://feathericons.com',
                'cdn_base'      => 'https://cdn.jsdelivr.net/npm/feather-icons@4.29.1/',
                'styles'        => array(
                    'icons' => array(
                        'path'  => 'dist/icons',
                        'label' => 'Default',
                    ),
                ),
                'default_style' => 'icons',
                'viewbox'       => '0 0 24 24',
                'normalize'     => false,
                'color_fix'     => false,
                'description'   => 'Simply beautiful open source icons.',
                'icon_count'    => 287,
            ),
            'phosphor'  => array(
                'slug'          => 'phosphor',
                'name'          => 'Phosphor',
                'version'       => '2.1.1',
                'license'       => 'MIT',
                'url'           => 'https://phosphoricons.com',
                'cdn_base'      => 'https://cdn.jsdelivr.net/npm/@phosphor-icons/core@2.1.1/',
                'styles'        => array(
                    'regular'  => array(
                        'path'  => 'assets/regular',
                        'label' => 'Regular',
                    ),
                    'bold'     => array(
                        'path'  => 'assets/bold',
                        'label' => 'Bold',
                    ),
                    'light'    => array(
                        'path'  => 'assets/light',
                        'label' => 'Light',
                    ),
                    'thin'     => array(
                        'path'  => 'assets/thin',
                        'label' => 'Thin',
                    ),
                    'fill'     => array(
                        'path'  => 'assets/fill',
                        'label' => 'Fill',
                    ),
                    'duotone'  => array(
                        'path'  => 'assets/duotone',
                        'label' => 'Duotone',
                    ),
                ),
                'default_style' => 'regular',
                'viewbox'       => '0 0 256 256',
                'normalize'     => true, // Needs viewBox normalization to 24x24.
                'color_fix'     => false,
                'description'   => 'A flexible icon family for interfaces, diagrams, presentations, and more.',
                'icon_count'    => 1248,
            ),
            'material'  => array(
                'slug'          => 'material',
                'name'          => 'Material Design Icons',
                'version'       => '0.14.13',
                'license'       => 'Apache-2.0',
                'url'           => 'https://fonts.google.com/icons',
                'cdn_base'      => 'https://cdn.jsdelivr.net/npm/@material-design-icons/svg@0.14.13/',
                'styles'        => array(
                    'filled'   => array(
                        'path'  => 'filled',
                        'label' => 'Filled',
                    ),
                    'outlined' => array(
                        'path'  => 'outlined',
                        'label' => 'Outlined',
                    ),
                    'round'    => array(
                        'path'  => 'round',
                        'label' => 'Round',
                    ),
                    'sharp'    => array(
                        'path'  => 'sharp',
                        'label' => 'Sharp',
                    ),
                    'two-tone' => array(
                        'path'  => 'two-tone',
                        'label' => 'Two Tone',
                    ),
                ),
                'default_style' => 'filled',
                'viewbox'       => '0 0 24 24',
                'normalize'     => false,
                'color_fix'     => true, // Needs hardcoded color replacement.
                'description'   => 'Material Design Icons by Google. Beautiful, delightful, and easy to use.',
                'icon_count'    => 2189,
            ),
        );
    }

    /**
     * Get a specific icon set by slug.
     *
     * @param string $slug Icon set slug.
     * @return array|null Icon set configuration or null if not found.
     */
    public static function get( $slug ) {
        $sets = self::get_all();
        return isset( $sets[ $slug ] ) ? $sets[ $slug ] : null;
    }

    /**
     * Get all available set slugs.
     *
     * @return array Array of set slugs.
     */
    public static function get_slugs() {
        return array_keys( self::get_all() );
    }

    /**
     * Validate that a slug is a valid preset.
     *
     * @param string $slug Slug to validate.
     * @return bool True if valid, false otherwise.
     */
    public static function is_valid_slug( $slug ) {
        return in_array( $slug, self::get_slugs(), true );
    }

    /**
     * Validate that a style is valid for a given set.
     *
     * @param string $slug  Icon set slug.
     * @param string $style Style slug.
     * @return bool True if valid, false otherwise.
     */
    public static function is_valid_style( $slug, $style ) {
        $set = self::get( $slug );
        if ( ! $set ) {
            return false;
        }
        return isset( $set['styles'][ $style ] );
    }

    /**
     * Get the CDN URL for a specific icon.
     *
     * @param string $slug  Icon set slug.
     * @param string $style Style slug.
     * @param string $name  Icon name.
     * @return string|null CDN URL or null if invalid.
     */
    public static function get_cdn_url( $slug, $style, $name ) {
        $set = self::get( $slug );
        if ( ! $set || ! isset( $set['styles'][ $style ] ) ) {
            return null;
        }

        $style_config = $set['styles'][ $style ];
        return $set['cdn_base'] . $style_config['path'] . '/' . $name . '.svg';
    }

    /**
     * Get the local file path for a specific icon.
     *
     * @param string $slug  Icon set slug.
     * @param string $style Style slug.
     * @param string $name  Icon name.
     * @return string Local file path.
     */
    public static function get_local_path( $slug, $style, $name ) {
        return MI_ICONS_DIR . $slug . '/' . $style . '/' . $name . '.svg';
    }

    /**
     * Get the local URL for a specific icon.
     *
     * @param string $slug  Icon set slug.
     * @param string $style Style slug.
     * @param string $name  Icon name.
     * @return string Local URL.
     */
    public static function get_local_url( $slug, $style, $name ) {
        return MI_ICONS_URL . $slug . '/' . $style . '/' . $name . '.svg';
    }

    /**
     * Get the manifest file path for a set.
     *
     * @param string $slug Icon set slug.
     * @return string Manifest file path.
     */
    public static function get_manifest_path( $slug ) {
        return MI_PRESETS_DIR . $slug . '.json';
    }

    /**
     * Load and parse a manifest file.
     *
     * @param string $slug Icon set slug.
     * @return array|WP_Error Manifest data or error.
     */
    public static function load_manifest( $slug ) {
        $path = self::get_manifest_path( $slug );

        if ( ! file_exists( $path ) ) {
            return new WP_Error(
                'manifest_not_found',
                sprintf(
                    /* translators: %s: Icon set name */
                    __( 'Manifest file not found for %s.', 'maple-icons' ),
                    $slug
                )
            );
        }

        $content = file_get_contents( $path ); // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents
        if ( false === $content ) {
            return new WP_Error(
                'manifest_read_error',
                __( 'Could not read manifest file.', 'maple-icons' )
            );
        }

        $manifest = json_decode( $content, true );
        if ( json_last_error() !== JSON_ERROR_NONE ) {
            return new WP_Error(
                'manifest_parse_error',
                __( 'Could not parse manifest file.', 'maple-icons' )
            );
        }

        return $manifest;
    }

    /**
     * Get style labels for a set.
     *
     * @param string $slug Icon set slug.
     * @return array Array of style labels.
     */
    public static function get_style_labels( $slug ) {
        $set = self::get( $slug );
        if ( ! $set ) {
            return array();
        }

        $labels = array();
        foreach ( $set['styles'] as $style_slug => $style_config ) {
            $labels[ $style_slug ] = $style_config['label'];
        }

        return $labels;
    }
}