69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
import logging
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import os
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import re
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import base64
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import subprocess
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import tempfile
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from pathlib import Path
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from jinja2 import Environment, FileSystemLoader
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logging.basicConfig(
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level=logging.INFO,
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format="%(asctime)s [%(levelname)s] %(name)s: %(message)s"
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)
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logger = logging.getLogger(__name__.split(".")[-1])
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class BadgeGeneratorService:
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def __init__(self, svg_template: Path, chrome_path: Path):
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self.svg_template = svg_template
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self.chrome_path = chrome_path
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def generate_badge(self, name, seat_id, picture) -> None:
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svg = self.generate_svg(name, seat_id, picture)
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self.svg_to_pdf(svg, f"files/{name}.pdf")
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def generate_svg(self, username: str, seat: str, image_base64: bytes) -> str:
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with open(self.svg_template, "r", encoding="utf-8") as f:
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svg = f.read()
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# ToDo: Select font size for long names
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svg = svg.replace(">test_username</tspan>", f">{username}</tspan>")
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svg = svg.replace(">Platz: XYZ</tspan><", f">Platz: {seat}</tspan><")
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if image_base64:
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encoded = base64.b64encode(image_base64).decode("utf-8")
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svg = svg.replace('xlink:href="data:image/jpeg;base64,"', f'xlink:href="data:image/jpeg;base64,{encoded}"')
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logger.info(f"Generate svg string: Username: {username}, Seat: {seat}, Picture: {str(image_base64)[:15]}")
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return svg
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def svg_to_pdf(self, svg_string: str, pdf_path: str):
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width = re.search(r'width="([^"]+)"', svg_string).group(1)
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height = re.search(r'height="([^"]+)"', svg_string).group(1)
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env = Environment(loader=FileSystemLoader("template"))
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template = env.get_template("badge_pdf.html")
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html = template.render(
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width=width,
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height=height,
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svg_string=svg_string
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)
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with tempfile.NamedTemporaryFile(delete=False, suffix=".html", mode="w", encoding="utf-8") as f:
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f.write(html)
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html_path = f.name
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try:
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subprocess.run([
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self.chrome_path,
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"--headless",
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"--disable-gpu",
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f"--print-to-pdf={os.path.abspath(pdf_path)}",
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html_path
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], check=True)
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finally:
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os.remove(html_path)
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logger.info(f"Created: {pdf_path}")
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