const internals = {
    kDefaultStages: [25, 50, 75],
};

/**
 * Convert percentage to pixel size
 * @param {number} percentage - Percentage value (can be negative)
 * @param {number} dimension - Dimension in pixels
 * @returns {number} Pixel value
 */
export function percentToPixel(percentage, dimension) {
    return (percentage * dimension) / 100;
}

/**
 * Get stage values from parsed map or use defaults
 * @param {Array} stageOverrides - Stage overrides from parsed map
 * @returns {Array<number>} Array of 3 stage values
 */
export function getStageValues(stageOverrides) {
    const stages = [...internals.kDefaultStages];

    if (stageOverrides && stageOverrides.length > 0) {
        stageOverrides.forEach((override) => {
            const index = { i: 0, ii: 1, iii: 2 }[override.stage];
            if (index !== undefined) {
                stages[index] = override.value;
            }
        });
    }

    return stages;
}

/**
 * Creates a render-friendly component map.
 * @param {Array<Object>} The list of components
 * @param {number} mapWidth - Map width in pixels
 * @param {number} mapHeight - Map height in pixels
 * @returns {Map} Pixel value
 */
export function createComponentMap(components, width, height) {
    return components.reduce((map, current) => {
        map[current.label.toLowerCase()] = [
            percentToPixel(current.coordinates[0], width),
            percentToPixel(current.coordinates[1], height),
        ];
        return map;
    }, {});
}