AfterAales/node_modules/hexo/lib/hexo/load_theme_config.js

'use strict';

const { join, parse } = require('path');
const tildify = require('tildify');
const { exists, readdir } = require('hexo-fs');
const { magenta } = require('chalk');
const { deepMerge } = require('hexo-util');

module.exports = ctx => {
  if (!ctx.env.init) return;
  if (!ctx.config.theme) return;

  let configPath = join(ctx.base_dir, `_config.${String(ctx.config.theme)}.yml`);

  return exists(configPath).then(exist => {
    return exist ? configPath : findConfigPath(configPath);
  }).then(path => {
    if (!path) return;

    configPath = path;
    return ctx.render.render({ path });
  }).then(config => {
    if (!config || typeof config !== 'object') return;

    ctx.log.debug('Second Theme Config loaded: %s', magenta(tildify(configPath)));

    // ctx.config.theme_config should have highest priority
    // If ctx.config.theme_config exists, then merge it with _config.[theme].yml
    // If ctx.config.theme_config doesn't exist, set it to _config.[theme].yml
    ctx.config.theme_config = ctx.config.theme_config
      ? deepMerge(config, ctx.config.theme_config) : config;
  });
};

function findConfigPath(path) {
  const { dir, name } = parse(path);

  return readdir(dir).then(files => {
    const item = files.find(item => item.startsWith(name));
    if (item != null) return join(dir, item);
  });
}