'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = mergeRules;
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var _hasAllProps = require('./hasAllProps');
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var _hasAllProps2 = _interopRequireDefault(_hasAllProps);
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var _getDecls = require('./getDecls');
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var _getDecls2 = _interopRequireDefault(_getDecls);
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var _getRules = require('./getRules');
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var _getRules2 = _interopRequireDefault(_getRules);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function isConflictingProp(propA, propB) {
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if (!propB.prop || propB.important !== propA.important) {
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return;
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}
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const parts = propA.prop.split('-');
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return parts.some(() => {
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parts.pop();
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return parts.join('-') === propB.prop;
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});
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}
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function hasConflicts(match, nodes) {
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const firstNode = Math.min.apply(null, match.map(n => nodes.indexOf(n)));
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const lastNode = Math.max.apply(null, match.map(n => nodes.indexOf(n)));
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const between = nodes.slice(firstNode + 1, lastNode);
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return match.some(a => between.some(b => isConflictingProp(a, b)));
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}
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function mergeRules(rule, properties, callback) {
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let decls = (0, _getDecls2.default)(rule, properties);
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while (decls.length) {
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const last = decls[decls.length - 1];
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const props = decls.filter(node => node.important === last.important);
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const rules = (0, _getRules2.default)(props, properties);
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if ((0, _hasAllProps2.default)(rules, ...properties) && !hasConflicts(rules, rule.nodes)) {
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if (callback(rules, last, props)) {
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decls = decls.filter(node => !~rules.indexOf(node));
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}
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}
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decls = decls.filter(node => node !== last);
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}
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}
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module.exports = exports['default'];
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