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* Shared color processing utilities for mobile platforms (Android/iOS)
*
* This module contains common logic for processing color tokens with light/dark modes
* to reduce duplication between Android and iOS format files.
*/
import {
getRawValueUnitValue,
isTokenReference,
findTokenByReference,
shouldSkipToken,
isDeprecatedToken,
getTokenDescription,
} from './mobile-helpers.js';
import { MODE_EXTENSION_KEY } from './constants.js';
/**
* Extract color values from a token (light and dark modes)
* @param {object} token - The token to process
* @returns {object} - { tokenValue, originalValue, originalDarkValue, darkValue }
*/
export function extractColorValues(token) {
const tokenValue = getRawValueUnitValue(token);
const originalValue = token.original?.$value;
const originalDarkValue = token.original?.$extensions?.[MODE_EXTENSION_KEY]?.dark?.$value;
const darkValue = token.$extensions?.[MODE_EXTENSION_KEY]?.dark?.$value || originalDarkValue;
return { tokenValue, originalValue, originalDarkValue, darkValue };
}
/**
* Process a single color token for both light and dark modes
* @param {object} config - Configuration object
* @param {object} config.token - The token to process
* @param {Array} config.allTokens - All tokens for reference resolution
* @param {Function} config.getPropName - Function to get property name from token
* @param {Function} config.getRefProperty - Function to get reference property string (refToken, isDark) => string | null
* @param {Function} config.resolveColor - Function to resolve color to final format (colorValue, tokens) => string | null
* @param {boolean} config.useDarkFallback - Whether to use light value as fallback for dark mode
* @returns {object} - { lightColor, darkColor } objects with { name, color } or null
*/
export function processColorToken({
token,
allTokens,
getPropName,
getRefProperty,
resolveColor,
useDarkFallback = true,
}) {
Iif (shouldSkipToken(token)) {
return { lightColor: null, darkColor: null };
}
const { tokenValue, originalValue, originalDarkValue, darkValue } = extractColorValues(token);
const propName = getPropName(token.path);
const description = getTokenDescription(token);
const deprecated = isDeprecatedToken(token);
let lightColor = null;
let darkColor = null;
// Process light value
const lightRef = isTokenReference(originalValue) ? originalValue : null;
if (lightRef) {
const refToken = findTokenByReference(lightRef, allTokens);
if (refToken) {
const refProp = getRefProperty(refToken, false); // false for light mode
if (refProp) {
lightColor = { name: propName, color: refProp, description, token, deprecated };
} else {
const resolved = resolveColor(tokenValue, allTokens);
Eif (resolved) {
lightColor = { name: propName, color: resolved, description, token, deprecated };
}
}
}
} else {
// Not a reference, resolve directly
const resolved = resolveColor(tokenValue, allTokens);
if (resolved) {
lightColor = { name: propName, color: resolved, description, token, deprecated };
}
}
// Process dark value
let darkColorAdded = false;
if (originalDarkValue && isTokenReference(originalDarkValue)) {
// Has explicit dark value reference
const refToken = findTokenByReference(originalDarkValue, allTokens);
Eif (refToken) {
const refProp = getRefProperty(refToken, true); // true for dark mode
if (refProp) {
darkColor = { name: propName, color: refProp, description, token, deprecated };
darkColorAdded = true;
} else E{
const resolved = resolveColor(darkValue, allTokens);
if (resolved) {
darkColor = { name: propName, color: resolved, description, token, deprecated };
darkColorAdded = true;
}
}
}
} else if (lightRef) {
// No explicit dark value, but light value is a reference
const refToken = findTokenByReference(lightRef, allTokens);
if (refToken) {
const refProp = getRefProperty(refToken, true); // true for dark
if (refProp) {
darkColor = { name: propName, color: refProp, description, token, deprecated };
darkColorAdded = true;
} else {
// Check if referenced token has a dark mode extension
const refDarkValue =
refToken.$extensions?.[MODE_EXTENSION_KEY]?.dark?.$value ||
refToken.original?.$extensions?.[MODE_EXTENSION_KEY]?.dark?.$value;
Iif (refDarkValue) {
// Use the referenced token's dark value
const resolved = resolveColor(refDarkValue, allTokens);
if (resolved) {
darkColor = { name: propName, color: resolved, description, token, deprecated };
darkColorAdded = true;
}
} else {
// Fall back to token's own dark value or light value
const resolved = resolveColor(darkValue || tokenValue, allTokens);
Eif (resolved) {
darkColor = { name: propName, color: resolved, description, token, deprecated };
darkColorAdded = true;
}
}
}
}
} else if (darkValue) {
// Dark value exists but is not a reference
const resolved = resolveColor(darkValue, allTokens);
Eif (resolved) {
darkColor = { name: propName, color: resolved, description, token, deprecated };
darkColorAdded = true;
}
}
// Apply fallback if enabled and no dark color was added
if (useDarkFallback && !darkColorAdded && lightColor) {
darkColor = { name: propName, color: lightColor.color, description, token, deprecated };
}
return { lightColor, darkColor };
}
/**
* Process an array of color tokens into light and dark arrays
* @param {object} config - Configuration object
* @param {Array} config.tokens - Tokens to process
* @param {Array} config.allTokens - All tokens for reference resolution
* @param {Function} config.getPropName - Function to get property name from token
* @param {Function} config.getRefProperty - Function to get reference property string
* @param {Function} config.resolveColor - Function to resolve color to final format
* @param {boolean} config.useDarkFallback - Whether to use light value as fallback for dark mode
* @returns {object} - { lightColors: [], darkColors: [] }
*/
export function processColorTokens(config) {
const lightColors = [];
const darkColors = [];
config.tokens.forEach((token) => {
const { lightColor, darkColor } = processColorToken({
token,
allTokens: config.allTokens,
getPropName: config.getPropName,
getRefProperty: config.getRefProperty,
resolveColor: config.resolveColor,
useDarkFallback: config.useDarkFallback,
});
if (lightColor) lightColors.push(lightColor);
if (darkColor) darkColors.push(darkColor);
});
return { lightColors, darkColors };
}
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