"use strict";

const {
  slash
} = require(`./utils`);

const path = require(`path`);

const fs = require(`fs-extra`);

const mime = require(`mime`);

const prettyBytes = require(`pretty-bytes`);

const md5File = require(`bluebird`).promisify(require(`md5-file`));

const {
  createContentDigest
} = require(`gatsby-core-utils`);

exports.createFileNode = async (pathToFile, createNodeId, pluginOptions = {}) => {
  const slashed = slash(pathToFile);
  const parsedSlashed = path.parse(slashed);
  const slashedFile = Object.assign({}, parsedSlashed, {
    absolutePath: slashed,
    // Useful for limiting graphql query with certain parent directory
    relativeDirectory: path.relative(pluginOptions.path || process.cwd(), parsedSlashed.dir)
  });
  const stats = await fs.stat(slashedFile.absolutePath);
  let internal;

  if (stats.isDirectory()) {
    const contentDigest = createContentDigest({
      stats: stats,
      absolutePath: slashedFile.absolutePath
    });
    internal = {
      contentDigest,
      type: `Directory`,
      description: `Directory "${path.relative(process.cwd(), slashed)}"`
    };
  } else {
    const contentDigest = await md5File(slashedFile.absolutePath);
    const mediaType = mime.getType(slashedFile.ext);
    internal = {
      contentDigest,
      type: `File`,
      mediaType: mediaType ? mediaType : `application/octet-stream`,
      description: `File "${path.relative(process.cwd(), slashed)}"`
    };
  } // Stringify date objects.


  return JSON.parse(JSON.stringify(Object.assign({
    // Don't actually make the File id the absolute path as otherwise
    // people will use the id for that and ids shouldn't be treated as
    // useful information.
    id: createNodeId(pathToFile),
    children: [],
    parent: null,
    internal,
    sourceInstanceName: pluginOptions.name || `__PROGRAMMATIC__`,
    absolutePath: slashedFile.absolutePath,
    relativePath: slash(path.relative(pluginOptions.path || process.cwd(), slashedFile.absolutePath)),
    extension: slashedFile.ext.slice(1).toLowerCase(),
    size: stats.size,
    prettySize: prettyBytes(stats.size),
    modifiedTime: stats.mtime,
    accessTime: stats.atime,
    changeTime: stats.ctime,
    birthTime: stats.birthtime
  }, slashedFile, stats)));
};