add contract pdf generation

backend/src/contracts/generate_contract.py

@@ -0,0 +1,58 @@
+
+import jinja2
+import src.models as models
+import html
+from weasyprint import HTML
+
+def generate_html_contract(
+    form: models.Form, 
+    contract_informations: dict,
+    planned: list[dict],
+    recurrent: list[dict],
+    recurrent_price: float,
+    total_price: float,
+):
+    template_dir = "./src/contracts/templates"
+    template_loader = jinja2.FileSystemLoader(searchpath=template_dir)
+    template_env = jinja2.Environment(loader=template_loader, autoescape=jinja2.select_autoescape(["html", "xml"]))
+    template_file = "layout.html"
+    template = template_env.get_template(template_file)
+    output_text = template.render(
+        contract_name=form.name,
+        contract_type=form.productor.type,
+        contract_season=form.season,
+        referer_name=form.referer.name,
+        referer_email=form.referer.email,
+        productor_name=form.productor.name,
+        productor_address=form.productor.address,
+        payment_methods_map={"cheque": "Ordre du chèque", "transfer": "IBAN (paiement par virements)"},
+        productor_payment_methods=form.productor.payment_methods,
+        member_name=f'{html.escape(contract_informations["firstname"])} {html.escape(contract_informations["lastname"])}',
+        member_email=html.escape(contract_informations["email"]),
+        member_phone=html.escape(contract_informations["phone"]),
+        contract_start_date=form.start,
+        contract_end_date=form.end,
+        planned=planned,
+        recurrent=recurrent,
+        recurrent_price=recurrent_price,
+        total_price=total_price,
+    )
+    options = {
+        'page-size': 'Letter',
+        'margin-top': '0.5in',
+        'margin-right': '0.5in',
+        'margin-bottom': '0.5in',
+        'margin-left': '0.5in',
+        'encoding': "UTF-8",
+        'print-media-type': True,
+        "disable-javascript": True,
+        "disable-external-links": True,
+        'enable-local-file-access': False,
+        "disable-local-file-access": True,
+        "no-images": True,
+    }
+
+    return HTML(
+        string=output_text,
+        base_url=template_dir
+    ).write_pdf()