Added limit and sort parameters, post index variable and relevant usage documentation.

README.md

@@ -6,6 +6,10 @@
 ## Usage
 `node app.js --user={username}`
 
+### Optional parameters
+* `--limit={number}`: Maximum amount posts to fetch content from
+* `--sort={method}`: How posts should be sorted while fetched. This affects the `$postIndex` variable, and in combination with a `--limit` decides what posts will be included
+
 ## Configuration
 The default configuration aims to be sensible, and the application may be used without any further tweaking. However, this application came to life because I was not satisfied by the organizatory facilities of similar applications, thus a multitude of options are at your disposal as described in this document.
 
@@ -17,12 +21,11 @@ Path patterns dictate where and how a file will be saved. Various variables and
 * `$postTitle`: The title of the reddit post
 * `$postUser`: The user that submitted the post, almost always equivalent to the `--user` command line argument
 * `$postDate`: The submission date of the reddit post, formatted by the `dateformat` configuration described below
-
+* `$postIndex`: The index of the post according to the sort method
 * `$albumId`: The ID of the media host album
 * `$albumTitle`: The title of the media host album
 * `$albumDescription`: The description of the media host album
 * `$albumDate`: The submission date of the media host album, formatted by the `dateformat` configuration described below
-
 * `$itemId`: The ID of the individual image or video
 * `$itemTitle`: The title of the individual image or video
 * `$itemDescription`: The description of the individual image or video

app.js

@@ -8,14 +8,16 @@ const methods = require('./methods/methods.js');
 const dissectLink = require('./dissectLink.js');
 const fetchContent = require('./fetchContent.js');
 
-const reddit = new snoowrap(config.reddit);
+const reddit = new snoowrap(config.reddit.api);
 
 reddit.getUser(yargs.user).getSubmissions({
-    limit: Infinity
+    sort: yargs.sort || config.reddit.sort,
+    limit: yargs.limit || config.reddit.limit
 }).then(submissions => {
-    const curatedPosts = submissions.map(submission => {
+    const curatedPosts = submissions.map((submission, index) => {
         return {
             id: submission.id,
+            index: index,
             title: submission.title,
             text: submission.selftext,
             user: submission.author.name,

fetchContent.js

@@ -32,14 +32,14 @@ function textPostToStream(item) {
     });
 };
 
-function fetchItem(item, index, post, attempt) {
+function fetchItem(item, post, attempt) {
     function retry(error) {
         console.log(error);
 
         if(attempt < 3) {
             console.log('Retrying...');
 
-            return fetchItem(item, index, post, ++attempt);
+            return fetchItem(item, post, ++attempt);
         }
     };
 
@@ -58,16 +58,18 @@ module.exports = function(posts) {
     return Promise.all(posts.map(post => {
         return Promise.resolve().then(() => {
             return Promise.all(post.content.items.map((item, index) => {
+                item.index = index;
+
                 if(item.self) {
                     return textPostToStream(item);
                 }
 
-                return fetchItem(item, index, post, 0);
+                return fetchItem(item, post, 0);
             }));
         }).then(items => {
-            return Promise.all(items.map((item, index) => {
+            return Promise.all(items.map(item => {
                 const type = item.type.split('/')[0];
-                const filepath = post.content.album ? interpolate(config.patterns.album[type], post, item, index) : interpolate(config.patterns[type], post, item, index);
+                const filepath = post.content.album ? interpolate(config.patterns.album[type], post, item) : interpolate(config.patterns[type], post, item);
 
                 return Promise.resolve().then(() => {
                     return fs.ensureDir(path.dirname(filepath));

interpolate.js

@@ -10,14 +10,15 @@ const extensions = {
     'video/webm': '.webm'
 };
 
-function interpolate(path, post, item, index) {
+function interpolate(path, post, item) {
     const dateFormat = config.patterns.dateformat || 'YYYYMMDD';
 
     const vars = {
         $postId: post.id,
         $postTitle: post.title,
         $postUser: post.user,
-        $postDate: dateFns.format(post.datetime, dateFormat)
+        $postDate: dateFns.format(post.datetime, dateFormat),
+        $postIndex: post.index + config.patterns.indexOffset
     };
 
     if(post.content.album) {
@@ -35,7 +36,7 @@ function interpolate(path, post, item, index) {
             $itemTitle: item.title,
             $itemDescription: item.description,
             $itemDate: dateFns.format(item.datetime, dateFormat),
-            $itemIndex: index + config.patterns.indexOffset,
+            $itemIndex: item.index + config.patterns.indexOffset,
             $ext: extensions[item.type]
         });
     }