nthinspectiontool/app/utils/pdf_generator.py

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2026-03-30 14:01:29 +00:00
"""
PDF generation utility for inspection reports.
"""
import os
from weasyprint import HTML, CSS
from flask import url_for, current_app
from app.models import Inspection
def generate_pdf(inspection_id):
"""Generate PDF for a given inspection ID."""
from flask import render_template
inspection = Inspection.query.get_or_404(inspection_id)
# Render the HTML template for PDF
html_string = render_template('pdf/inspection_pdf.html', inspection=inspection)
# Define CSS for PDF (we can also use external CSS)
css_string = """
@page {
size: A4;
margin: 2cm;
@bottom-center {
content: "Page " counter(page) " of " counter(pages);
font-size: 9pt;
color: #666;
}
}
body {
font-family: "Helvetica", "Arial", sans-serif;
line-height: 1.5;
color: #333;
}
.header {
text-align: center;
margin-bottom: 2cm;
}
.header h1 {
font-size: 24pt;
margin: 0;
}
.header h2 {
font-size: 18pt;
margin: 0;
color: #666;
}
.section {
margin-bottom: 1.5cm;
}
.section h2 {
font-size: 16pt;
border-bottom: 1px solid #ccc;
padding-bottom: 2px;
margin-bottom: 0.5cm;
}
.two-column {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 1cm;
}
.photo-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
gap: 0.5cm;
}
.photo-item {
page-break-inside: avoid;
margin-bottom: 0.5cm;
}
.photo-item img {
max-width: 100%;
height: auto;
border: 1px solid #ddd;
}
.photo-caption {
font-size: 9pt;
margin-top: 2px;
}
.photo-action {
font-size: 9pt;
font-weight: bold;
margin-top: 2px;
}
.conclusion-status {
font-size: 14pt;
padding: 0.5cm;
text-align: center;
margin: 1cm 0;
}
.conclusion-status.ok {
background-color: #d4edda;
border: 1px solid #c3e6cb;
color: #155724;
}
.conclusion-status.minor {
background-color: #fff3cd;
border: 1px solid #ffeaa7;
color: #856404;
}
.conclusion-status.major {
background-color: #f8d7da;
border: 1px solid #f5c6cb;
color: #721c24;
}
.footer {
margin-top: 2cm;
text-align: center;
font-size: 9pt;
color: #666;
}
"""
# Create HTML object
html = HTML(string=html_string, base_url=current_app.config['WEASYPRINT_BASE_URL'])
# Create CSS object
css = CSS(string=css_string)
# Generate PDF
pdf_bytes = html.write_pdf(stylesheets=[css])
return pdf_bytes