git.r.bdr.sh - rbdr/blog/blob - lib/generators/static.js

   1 import { access, cp, readdir } from 'fs/promises';
   2 import { constants } from 'fs';
   3 import { join } from 'path';
   4 import { debuglog } from 'util';
   5 import { kFileNotFoundError } from '../constants.js';
   6
   7 const internals = {
   8   debuglog: debuglog('blog'),
   9   kAssetsDirectoryName: 'assets'
  10 };
  11
  12 /**
  13  * Generates the static assets required for the blog
  14  *
  15  * @name StaticGenerator
  16  * @param {string} source the source directory
  17  * @param {string} target the target directory
  18  * @param {Array.<Blog.tPost>} posts the list of posts
  19  */
  20 export default async function StaticGenerator(source, target, _) {
  21
  22   try {
  23     await access(source, constants.R_OK);
  24
  25     const entries = await readdir(source, { withFileTypes: true });
  26     for (const entry of entries) {
  27       const sourceAsset = join(source, entry.name);
  28       const targetAsset = join(target, entry.name);
  29
  30       internals.debuglog(`Copying ${sourceAsset} to ${targetAsset}`);
  31
  32       if (entry.isDirectory()) {
  33         await cp(sourceAsset, targetAsset, { recursive: true });
  34       }
  35       else {
  36         await cp(sourceAsset, targetAsset);
  37       }
  38     }
  39   }
  40   catch (error) {
  41     if (error.code === kFileNotFoundError) {
  42       internals.debuglog(`No static directory found in ${source}`);
  43       return;
  44     }
  45
  46     throw error;
  47   }
  48 }