/**
 * Single source of truth for filter presets.
 *
 * The CSS rules in src/styles/style.scss MUST match this list one-to-one.
 * Adding a preset = add an entry here + add a matching .has-filter-<slug>
 * rule in style.scss. Do not duplicate filter values elsewhere.
 *
 * @package SoloFiltersImageEnhancements
 */

export const PRESETS = [
    {
        slug: 'normal',
        label: 'Normal',
        color: '#f0f0f0',
        cssFilter: 'none',
    },
    {
        slug: 'warm',
        label: 'Warm',
        color: '#f4a261',
        cssFilter: 'saturate(1.5) sepia(0.6) brightness(1.08) contrast(1.1) hue-rotate(-8deg)',
    },
    {
        slug: 'cool',
        label: 'Cool',
        color: '#a8dadc',
        cssFilter: 'saturate(0.85) hue-rotate(-30deg) brightness(0.95) contrast(1.08)',
    },
    {
        slug: 'vivid',
        label: 'Vivid',
        color: '#e63946',
        cssFilter: 'saturate(2.0) contrast(1.3) brightness(1.0) hue-rotate(-5deg)',
    },
    {
        slug: 'fade',
        label: 'Fade',
        color: '#cdb4db',
        cssFilter: 'saturate(0.6) contrast(0.85) brightness(1.15) sepia(0.18)',
    },
    {
        slug: 'mono',
        label: 'Mono',
        color: '#6c757d',
        cssFilter: 'grayscale(1) contrast(1.05)',
    },
    {
        slug: 'dramatic',
        label: 'Dramatic',
        color: '#1d3557',
        cssFilter: 'contrast(1.35) saturate(1.15) brightness(0.92)',
    },
    {
        slug: 'sepia',
        label: 'Sepia',
        color: '#d4a373',
        cssFilter: 'sepia(0.85) saturate(1.1) contrast(1.05)',
    },
];

export const DEFAULT_PRESET = 'normal';

const VALID_SLUGS = new Set( PRESETS.map( ( p ) => p.slug ) );

/**
 * Returns true if the given slug is a known preset.
 *
 * @param {string} slug
 * @return {boolean}
 */
export function isValidPresetSlug( slug ) {
    return VALID_SLUGS.has( slug );
}