[SSG] Complete thumbnail gen. Refactor Episode, main.

nova.py

@@ -3,14 +3,21 @@
 
 import argparse
 from collections import UserList
+from datetime import datetime
 import os
 import os.path as path
 import re
+import subprocess
 import sys
 
 import jinja2
 
 
+def gen_name(date, slug):
+    "Returns to file name"
+    return date.strftime("%Y-%m-%d-") + slug
+
+
 class EpisodeList(UserList):
     "Represents list of episodes"
     def __init__(self, data, output, template):
@@ -18,11 +25,20 @@ class EpisodeList(UserList):
         self.output = output
         self.template = template
 
-    def sort(self):
+    def sort(self, *_args, **_kwargs):
         "Sorts the EpisodeList"
+        super().sort(key=lambda x: x.date, reverse=True)
 
-    def generate_thumnails(self):
+    def generate_thumbnails(self):
         "Generates thumbnails for all the videos"
+        if not path.isdir(self.output + "assets"):
+            os.mkdir(self.output + "assets")
+        if not path.isdir(self.output + "assets/thumbnails"):
+            os.mkdir(self.output + "assets/thumbnails")
+        for episode in self.data:
+            location = (self.output + "assets/thumbnails/" +
+                        gen_name(episode.date, episode.slug) + ".jpg")
+            episode.store_thumbnail(location)
 
     def generate_atom(self):
         "Generates the Atom feed"
@@ -33,27 +49,32 @@ class EpisodeList(UserList):
 
 class Episode:
     "Represents one episode of podcast"
-    def __init__(self, date, slug, title, show_notes):
+    def __init__(self, date, slug, title, show_notes, video_src):
         self.date = date
         self.slug = slug
         self.title = title
         self.show_notes = show_notes
+        self.video = video_src
 
-    def render(self, template, thumbnail_src, video_src):
+    def render(self, template, thumbnail_src):
         "Renders the Episode with the given template"
         return template.render(
             title=self.title,
             show_notes=jinja2.Markup(self.show_notes),
             thumbnail_src=thumbnail_src,
-            video_src=video_src
+            video_src=self.video
         )
 
     def store_thumbnail(self, location):
         "Stores the thumbnail for given image at path"
+        args = ["ffmpeg", "-i", self.video, "-ss", "00:00:01.000", "-vframes",
+                "1", location]
+        subprocess.run(args, check=False)
 
 
 def main():
     "Main method"
+    root = path.dirname(sys.argv[0])
     parser = argparse.ArgumentParser()
     parser.add_argument("input_dir", help="Input directory")
     parser.add_argument("output_dir", help="Output directory")
@@ -71,27 +92,28 @@ def main():
         os.mkdir(args.output_dir)
 
     template = jinja2.Environment(
-        loader=jinja2.FileSystemLoader(input_dir),
+        loader=jinja2.FileSystemLoader(root),
         autoescape=jinja2.select_autoescape("html")
     ).get_template("index.html")
 
     podcast = EpisodeList([], output_dir, template)
 
-    split = re.compile(r"((?P<date>\d{4}-[01]?\d-[0123]?\d)-(?P<slug>.*))")
+    split = re.compile(r"((?P<date>\d{4}-[01]?\d-[0123]?\d)-(?P<slug>.*).md)")
     for file in os.listdir(input_dir + "md"):
         match = split.match(file)
         if not match:
             print(f"Invalid filename: {file}", file=sys.stderr)
             continue
-        date = match.group("date")
+        date = datetime.strptime(match.group("date"), "%Y-%M-%d")
         slug = match.group("slug")
-        with open(file) as f:  # pylint: disable=invalid-name
-            title = f.readline()
-            show_notes = f.read()
-        podcast.append(Episode(date, slug, title, show_notes))
+        with open(input_dir + "md/" + file) as episode:
+            title = episode.readline()
+            show_notes = episode.read()
+        video = input_dir + "videos/" + gen_name(date, slug) + ".mp4"
+        podcast.append(Episode(date, slug, title, show_notes, video))
 
     podcast.sort()
-    podcast.generate_thumnails()
+    podcast.generate_thumbnails()
     podcast.generate_atom()
     podcast.generate_site()
 

requirements.txt

@@ -0,0 +1,2 @@
+jinja2
+markdown