var postcss = require('postcss');

module.exports = function(decl) {
    if (decl.prop === 'flex') {
        var values = postcss.list.space(decl.value);
        var flexGrow = values[0];
        var flexShrink = values[1] || '1';
        var flexBasis = values[2] || '0%';
        // Safari seems to hate '0%' and the others seems to make do with a nice value when basis is missing,
        // so if we see a '0%', just remove it.  This way it'll get adjusted for any other cases where '0%' is
        // already defined somewhere else.
        if(flexBasis === '0%') flexBasis = null;
        decl.value = flexGrow + ' ' + flexShrink + (flexBasis ? ' ' + flexBasis : '');
    }
};