"use strict";

// http://ruhoh.com/docs/2/pages/#toc_41
/*
  If a page has a permalink, that permalink should be respected.
  Otherwise it should use the the permalink for that collection.
*/

var tags,
  permalinkTransforms,
  cases,
  path = /*exports.path ||*/ require("path");
tags = {
  year: "Year from the page’s filename",
  month: "Month from the page’s filename",
  day: "Day from the page’s filename",
  path: "The page file's path relative to the base of your website.",
  relative_path: "The page file's path relative to its name-spaced directory.",
  filename: "The page file's filename (path is not included).",
  categories:
    "The specified categories for this page. If more than one category is set, only the first one is used. If no categories exist, the URL omits this parameter.",
  i_month: "Month from the page’s filename without leading zeros.",
  i_day: "Day from the page’s filename without leading zeros.",
  title: "The title, as a slug.",
  slug: "alias of title",
  name: "alias of title",
  collection: "i.e. posts/ or essays/ or whatever/",
};

function pad(str, n) {
  str = str.toString();
  if (str.length < n) {
    str = "0" + str;
  }

  return str;
}

// https://www.youtube.com/watch?v=1NryFD9_hR0&list=RDOeLUK4a6Ojc&index=2
cases = {
  "/:title.html": "/my-title.html",
  ":title/": "/my-title/",
  "/:bad/:title/": "/:bad/my-title/",
  "/:slug/": "/my-title/",
  "/:path/:name.html": "/posts/fun/my-title.html",
  "/:relative_path/:name/": "/fun/my-title/",
  "/:year-:month-:day/:name": "/2015-07-04/my-title/",
  "/:year/:i_month/:i_day/:name": "/2015/7/4/my-title/",
  "/:filename.html": "/my-file-name.html",
  "/:filename": "/my-file-name/",
  "/:filename/": "/my-file-name/",
  "/:collection/:title/": "/posts/my-title/",
  "/:collection/:filename": "/posts/my-file-name/",
  "/:something/:or/:other": "/:something/:or/:other/",
  "/:categories/:title/": "/desi/my-title/",
};

Object.keys(cases).forEach(function (tpl) {
  var entity, tpld;

  entity = {
    year: "2015",
    month: "07",
    day: "04",
    title: "My Title",
    slug: "my-title",
    name: "My-File-Name.html",
    relativePath: "posts/fun",
    path: "posts/fun/My-File-Name.html",
    collection: "posts",
    yml: { categories: ["desi"] },
  };

  tpld = permalinker(tpl, entity);

  if (cases[tpl] !== tpld) {
    console.error("[ERROR]");
    console.error(tpl + " " + tpld + " " + cases[tpl]);
    throw new Error(
      "Did not template permalink correctly. " +
        tpl +
        " " +
        tpld +
        " " +
        cases[tpl]
    );
  }
});