Add link to chart

* Added SQL file to export CSV
* Updated plot.py to close figures due to RuntimeWarning shown
* hnbot now includes link to chart in comment
* charts are generated and copied to files.ekzyis.com using a cronjob

cron.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+set -xe
+
+cd /home/ekzyis/hnbot
+sqlite3 hnbot.sqlite3 < hacker_news.csv.sql
+venv/bin/python plot.py
+mv hn_*.png plots/
+rsync plots/* vps:/var/www/files/public/hn/
+

hacker_news.csv.sql

@@ -0,0 +1,7 @@
+.headers on
+.mode csv
+.output hacker_news.csv
+SELECT id, created_at, time, title, url, author, ndescendants, score, rank
+FROM hn_items
+WHERE id IN (SELECT hn_id FROM sn_items)
+ORDER BY id, created_at DESC;

plot.py

@@ -58,3 +58,6 @@ for [hn_id], group in grouped:
 
     plt.tight_layout()
     plt.savefig(f'hn_{hn_id}.png')
+    plt.close()
+
+    print(f'Saved hn_{hn_id}.png')

sn.go

@@ -84,7 +84,8 @@ func PostStoryToStackerNews(story *Story, options PostStoryOptions) (int, error)
 	SendStackerNewsEmbedToDiscord(story.Title, parentId)
 
 	comment := fmt.Sprintf(
-		"This link was posted by [%s](%s) %s on [HN](%s). It received %d points and %d comments.",
+		"This link was posted by [%s](%s) %s on [HN](%s). It received %d points and %d comments.\n\n"+
+			fmt.Sprintf("https://files.ekzyis.com/public/hn/hn_%d.png", story.ID),
 		story.By,
 		HackerNewsUserLink(story.By),
 		humanize.Time(time.Unix(int64(story.Time), 0)),