Remove logo data from templates, add logo args

Removed the hard-coded data: URIs from the template files. Implemented a
--logo argument to provide a logo file, and a --no-logo argument to
prevent the default logo from being displayed. Data URIs are now created
on demand and passed as context to the templates.

Bumped version to 0.1.3

README.md

@@ -1,6 +1,6 @@
 # Kalente
 
-<img src="img/kalente.png" alt="Kalente logo" width="200" height="200" align="right">
+<img src="src/kalente/static/logo.png" alt="Kalente logo" width="200" height="200" align="right">
 
 Kalente is a simple Python script for generating PDF calendars.
 

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "kalente"
-version = "0.1.2"
+version = "0.1.3"
 authors = [
   { name="Kumi Mitterer", email="kalente@kumi.email" },
 ]

requirements-dev.txt

@@ -0,0 +1,2 @@
+djlint
+black

src/kalente/__main__.py

@@ -6,12 +6,15 @@ from datetime import date, timedelta
 from pathlib import Path
 from typing import Optional
 from locale import setlocale, LC_ALL
+from base64 import b64encode
 
 from jinja2 import Environment, FileSystemLoader
 from dateutil.parser import parse
 
 import math
 
+NO_LOGO = ""
+
 
 def get_day(
     for_date: date = None,
@@ -25,11 +28,14 @@ def get_day(
         "date_obj": day,
         "day": day.strftime("%A"),
         "date": day.strftime(date_format),
-        "holiday": holidays.CountryHoliday(country_code, years=[for_date.year]).get(day),
+        "holiday": holidays.CountryHoliday(country_code, years=[for_date.year]).get(
+            day
+        ),
         "is_weekend": (day.weekday() in [5, 6]),
     }
     return day_info
 
+
 def get_week(
     for_date: date = None,
     country_code: Optional[str] = None,
@@ -60,6 +66,7 @@ def get_week(
         week_days.append(day_info)
     return week_days
 
+
 def get_month(
     for_date: date = None,
     country_code: Optional[str] = None,
@@ -87,6 +94,7 @@ def get_month(
 
     return month_weeks
 
+
 def get_year(
     for_date: date = None,
     country_code: Optional[str] = None,
@@ -107,7 +115,10 @@ def get_year(
 
     return year_months
 
-def generate_html(content, content_type, template_path: str = None):
+
+def generate_html(
+    content, content_type, template_path: str = None, logo_path: str = None
+):
     if not template_path:
         template_name = "{}.html".format(content_type)
         file_loader = FileSystemLoader(Path(__file__).parent.absolute() / "templates")
@@ -115,20 +126,35 @@ def generate_html(content, content_type, template_path: str = None):
         template_name = template_path
         file_loader = FileSystemLoader()
 
+    if logo_path is None:
+        logo_path = Path(__file__).parent / "static" / "logo.png"
+
+    if logo_path:
+        # Let it throw, let it throw, let it throw...
+        with Path(logo_path).open("rb") as logo_file:
+            logo = b64encode(logo_file.read()).decode("utf-8")
+            mime_type = (
+                "image/png" if str(logo_path).endswith(".png") else "image/jpeg"
+            )  # Doesn't matter much anyway.
+            data_uri = f"data:image/png;base64,{logo}"
+
     env = Environment(loader=file_loader)
     template = env.get_template(template_name)
 
+    context = {"logo": data_uri}
+
     if content_type == "yearly":
-        return template.render(year=content)
+        return template.render(year=content, **context)
     elif content_type == "monthly":
-        return template.render(month=content, month_obj=content[1][0]["date_obj"])
+        return template.render(month=content, **context)
     elif content_type == "weekly":
-        return template.render(week=content)
+        return template.render(week=content, **context)
     elif content_type == "daily":
-        return template.render(day=content)
+        return template.render(day=content, **context)
     else:
         raise ValueError("Invalid content type: {}".format(content_type))
 
+
 def convert_html_to_pdf(content, output_filename, options=None):
     options.setdefault("page-size", "A4")
     options.setdefault("orientation", "Landscape")
@@ -224,6 +250,20 @@ def main():
         default=None,
     )
 
+    logo_group = parser.add_mutually_exclusive_group()
+    logo_group.add_argument(
+        "--logo",
+        help="Path to the logo to use",
+        required=False,
+        default=None,
+    )
+    logo_group.add_argument(
+        "--no-logo",
+        action="store_true",
+        help="Don't use a logo",
+        required=False,
+    )
+
     args = parser.parse_args()
 
     # Set locale to en_US.UTF-8 – for now, only English is supported
@@ -277,20 +317,27 @@ def main():
     if not args.type in ["daily", "weekly", "monthly", "yearly"]:
         raise ValueError(f"Invalid calendar type: {args.type}")
 
+    if args.no_logo:
+        logo_path = NO_LOGO
+    else:
+        logo_path = args.logo
+
     for i in range(count):
-        data = ({
+        data = (
+            {
                 "daily": get_day,
                 "weekly": get_week,
                 "monthly": get_month,
-            "yearly": get_year
-        }[args.type])(for_date, country_code, args.date_format)
-        html_content = generate_html(data, args.type, args.template)
+                "yearly": get_year,
+            }[args.type]
+        )(for_date, country_code, args.date_format)
+        html_content = generate_html(data, args.type, args.template, logo_path)
         pages.append(html_content)
         for_date = {
             "daily": lambda x: x["date_obj"] + timedelta(days=1),
             "weekly": lambda x: x[-1]["date_obj"] + timedelta(days=1),
             "monthly": lambda x: x[1][0]["date_obj"] + timedelta(days=31),
-            "yearly": lambda x: x[11][5][0]["date_obj"] + timedelta(days=365)
+            "yearly": lambda x: x[11][5][0]["date_obj"] + timedelta(days=365),
         }[args.type](data)
 
     conversion_options = {"orientation": "Portrait"} if args.type == "daily" else {}