Comment and refactor [TIMETABLE/SUBSTITUTIONS]

biscuit/apps/chronos/pdf.py

@@ -4,6 +4,8 @@ import subprocess
 from django.utils import timezone
 from django.utils import formats
 
+# LaTeX constants
+
 TEX_HEADER = """\\documentclass[11pt]{article}
 \\usepackage[ngerman]{babel}
 \\usepackage[utf8]{inputenc}
@@ -86,28 +88,38 @@ TEX_HEADER_CLASS = """
 
 
 def generate_pdf(tex, filename):
+    """Generate a PDF by LaTeX code"""
+
+    # Read LaTeX file
     tex_file = open(os.path.join("latex", filename + ".tex"), "w")
     tex_file.write(tex)
     tex_file.close()
 
+    # Execute pdflatex to generate the PDF
     bash_command = "pdflatex -output-directory latex {}.tex".format(filename)
     process = subprocess.Popen(bash_command.split(), stdout=subprocess.PIPE)
     output = process.communicate()[0]
-    # bash_command = "xreader {}.pdf".format(filename)
-    # process = subprocess.Popen(bash_command.split(), stdout=subprocess.PIPE)
-    return True
 
 
 def tex_replacer(s):
+    """Replace HTML tags by LaTeX tags"""
+
+    # Strong text
     s = s.replace("<strong>", "\\textbf{")
-    s = s.replace("<s>", "\\sout{")
     s = s.replace("</strong>", "}")
+
+    # Struck out text
+    s = s.replace("<s>", "\\sout{")
     s = s.replace("</s>", "}")
+
+    # Arrow
     s = s.replace("→", "$\\rightarrow$")
+
     return s
 
 
 def generate_class_tex(subs, date):
+    """Generate LaTeX for a PDF by a substitution table"""
     tex_body = ""
 
     # Format dates

biscuit/apps/chronos/views.py

@@ -68,6 +68,8 @@ def plan(request, plan_type, plan_id):
 
 
 def get_next_weekday(date):
+    """Get the next weekday by a datetime object"""
+
     if date.isoweekday() in {6, 7}:
         date += datetime.timedelta(days=date.isoweekday() % 4)
     return date
@@ -75,38 +77,38 @@ def get_next_weekday(date):
 
 @login_required
 def sub_pdf(request):
+    """Show substitutions as PDF for the next weekday (specially for monitors)"""
+
+    # Get the next weekday
     today = timezone.datetime.now()
     first_day = get_next_weekday(today)
 
+    # Get subs and generate table
     subs = get_substitutions_by_date(first_day)
     sub_table = generate_sub_table(subs)
+
+    # Generate LaTeX
     tex = generate_class_tex(sub_table, first_day)
-    print(first_day)
-    print(tex)
 
+    # Generate PDF
     generate_pdf(tex, "class")
+
+    # Read and response PDF
     file = open(os.path.join("latex", "class.pdf"), "rb")
     return FileResponse(file, content_type="application/pdf")
 
 
 @login_required
 def substitutions(request, year=None, day=None, month=None):
+    """Show substitutions in a classic view"""
+
     date = timezone.datetime.now()
     if year is not None and day is not None and month is not None:
         date = timezone.datetime(year=year, month=month, day=day)
 
-    print(date)
-
+    # Get subs and generate table
     subs = get_substitutions_by_date(date)
     sub_table = generate_sub_table(subs)
-    tex = generate_class_tex(sub_table, date)
-    print(tex)
-
-    generate_pdf(tex, "class")
-
-    for row in sub_table:
-        print(row.lesson)
-        print(row.teacher)
 
     context = {
         "subs": subs,