"use strict";

var fs = require('fs').promises;

function create(Desi, options) {
  var fsapi = Desi.fsapi;
  options.blogdir = options.blogdir || options.working_path;

  fsapi.getMeta = function (dirnames, opts) {
    opts = opts || {};

    var extensions = "",
      dotfiles = "",
      contents = "",
      sha1sum = "";
    if (Array.isArray(opts.extensions)) {
      extensions = "&extensions=" + opts.extensions.join(","); // md,markdown,jade,htm,html
    }
    if (opts.dotfiles) {
      dotfiles = "&dotfiles=true";
    }
    if (opts.contents) {
      contents = "&contents=true";
    }
    if (false === opts.sha1sum) {
      sha1sum = "&sha1sum=false";
    }

    return fsapi.walk.walkDirs(options.blogdir, dirnames, opts);
  };

  fsapi.getContents = function (filepaths) {
    return fsapi.getfs(options.blogdir, filepaths);
  };

  fsapi.getCache = function () {
    return fs
      .readFile(options.blogdir, "/cache.json")
      .catch(function (/*e*/) {
        return {};
      })
      .then(function (obj) {
        return obj;
      });
  };

  fsapi.copy = function (files) {
    // TODO size
    return fsapi.copyfs(options.blogdir, files);
  };

  fsapi.putFiles = function (files, opts) {
    files.forEach(function (file) {
      if (!file.contents || "string" === typeof file.contents) {
        return;
      }
      if (/\.json$/i.test(file.path)) {
        file.contents = JSON.stringify(file.contents);
      } else if (/\.ya?ml$/i.test(file.path)) {
        file.contents = Desi.YAML.stringify(file.contents);
      }
    });

    // TODO size
    return fsapi.putfs(options.blogdir, files, opts);
  };
}

exports.create = create;