"""Shared ReportLab PDF builder for cemetery plot purchase agreements.""" from __future__ import annotations import base64 from decimal import Decimal from io import BytesIO from typing import TYPE_CHECKING if TYPE_CHECKING: from src.apps.sales.models.contract import Contract def build_contract_pdf_bytes(contract: "Contract") -> bytes: """Build a signed contract PDF and return the raw bytes.""" from reportlab.lib import colors from reportlab.lib.pagesizes import letter from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle from reportlab.lib.units import inch from reportlab.lib.utils import ImageReader # noqa: F401 (kept for potential canvas use) from reportlab.platypus import ( SimpleDocTemplate, Paragraph, Spacer, Table, TableStyle, HRFlowable, Image as RLImage, ) buf = BytesIO() doc = SimpleDocTemplate( buf, pagesize=letter, rightMargin=0.75 * inch, leftMargin=0.75 * inch, topMargin=0.75 * inch, bottomMargin=0.75 * inch, ) styles = getSampleStyleSheet() title_style = ParagraphStyle( "ContractTitle", parent=styles["Title"], fontSize=16, spaceAfter=4, textColor=colors.HexColor("#1a1a2e"), ) heading_style = ParagraphStyle( "SectionHeading", parent=styles["Heading2"], fontSize=11, spaceBefore=12, spaceAfter=4, textColor=colors.HexColor("#2563eb"), ) normal = styles["Normal"] small_style = ParagraphStyle( "Small", parent=normal, fontSize=8, textColor=colors.HexColor("#6b7280"), ) story = [] # Letterhead story.append(Paragraph("INDELIS Cemetery", title_style)) story.append(Paragraph("Cemetery Plot Purchase Agreement", styles["Heading1"])) story.append(HRFlowable(width="100%", thickness=1, color=colors.HexColor("#2563eb"))) story.append(Spacer(1, 0.15 * inch)) # Contract meta signed_date = contract.signed_at.strftime("%B %d, %Y") if contract.signed_at else "N/A" meta_data = [ ["Contract Number:", contract.contract_number or "—"], ["Contract Type:", (contract.contract_type or "—").replace("_", " ").title()], ["Date Signed:", signed_date], ["Status:", (contract.status or "—").upper()], ] meta_table = Table(meta_data, colWidths=[2 * inch, 4 * inch]) meta_table.setStyle(TableStyle([ ("FONTNAME", (0, 0), (0, -1), "Helvetica-Bold"), ("FONTSIZE", (0, 0), (-1, -1), 10), ("BOTTOMPADDING", (0, 0), (-1, -1), 4), ("TOPPADDING", (0, 0), (-1, -1), 4), ("TEXTCOLOR", (0, 0), (0, -1), colors.HexColor("#374151")), ])) story.append(meta_table) story.append(Spacer(1, 0.2 * inch)) # Purchaser details story.append(Paragraph("Purchaser Information", heading_style)) purchaser_data = [ ["Name:", contract.purchaser_name or "—"], ["Email:", contract.purchaser_email or "—"], ["Phone:", contract.purchaser_phone or "—"], ["Address:", contract.purchaser_address or "—"], ] purchaser_table = Table(purchaser_data, colWidths=[1.5 * inch, 5 * inch]) purchaser_table.setStyle(TableStyle([ ("FONTNAME", (0, 0), (0, -1), "Helvetica-Bold"), ("FONTSIZE", (0, 0), (-1, -1), 10), ("BOTTOMPADDING", (0, 0), (-1, -1), 4), ("TOPPADDING", (0, 0), (-1, -1), 4), ])) story.append(purchaser_table) story.append(Spacer(1, 0.2 * inch)) # Line items table story.append(Paragraph("Items", heading_style)) line_items = contract.line_items or [] li_headers = [["Description", "Qty", "Unit Price", "Subtotal"]] li_rows = [] subtotal = Decimal("0") for item in line_items: unit = Decimal(str(item.unit_price)) qty = item.quantity total = Decimal(str(item.line_total)) subtotal += total li_rows.append([item.description, str(qty), f"${unit:,.2f}", f"${total:,.2f}"]) if not li_rows: li_rows = [["No line items", "", "", ""]] hst_rate = Decimal("0.13") hst_amount = (subtotal * hst_rate).quantize(Decimal("0.01")) grand_total = subtotal + hst_amount summary_rows = [ ["", "", "Subtotal:", f"${subtotal:,.2f}"], ["", "", "HST (13%):", f"${hst_amount:,.2f}"], ["", "", "Total:", f"${grand_total:,.2f}"], ] li_col_widths = [3.5 * inch, 0.5 * inch, 1.25 * inch, 1.25 * inch] li_table_data = li_headers + li_rows + summary_rows li_table = Table(li_table_data, colWidths=li_col_widths) li_table.setStyle(TableStyle([ ("BACKGROUND", (0, 0), (-1, 0), colors.HexColor("#1e3a5f")), ("TEXTCOLOR", (0, 0), (-1, 0), colors.white), ("FONTNAME", (0, 0), (-1, 0), "Helvetica-Bold"), ("FONTSIZE", (0, 0), (-1, 0), 10), ("ALIGN", (1, 0), (-1, 0), "RIGHT"), ("FONTSIZE", (0, 1), (-1, -1), 9), ("ROWBACKGROUNDS", (0, 1), (-1, len(li_rows)), [colors.white, colors.HexColor("#f9fafb")]), ("ALIGN", (1, 1), (-1, -1), "RIGHT"), ("FONTNAME", (2, len(li_rows) + 1), (2, -1), "Helvetica-Bold"), ("LINEABOVE", (2, len(li_rows) + 1), (-1, len(li_rows) + 1), 1, colors.HexColor("#d1d5db")), ("FONTNAME", (2, -1), (-1, -1), "Helvetica-Bold"), ("FONTSIZE", (2, -1), (-1, -1), 10), ("GRID", (0, 0), (-1, len(li_rows)), 0.5, colors.HexColor("#e5e7eb")), ("BOTTOMPADDING", (0, 0), (-1, -1), 6), ("TOPPADDING", (0, 0), (-1, -1), 6), ("LEFTPADDING", (0, 0), (-1, -1), 6), ("RIGHTPADDING", (0, 0), (-1, -1), 6), ])) story.append(li_table) story.append(Spacer(1, 0.15 * inch)) # Payment plan if contract.payment_plan_type: story.append(Paragraph( f"Payment Plan: {contract.payment_plan_type.replace('_', ' ').title()}", normal, )) story.append(Spacer(1, 0.2 * inch)) # Signature section story.append(Paragraph("Signatures", heading_style)) story.append(HRFlowable(width="100%", thickness=0.5, color=colors.HexColor("#d1d5db"))) story.append(Spacer(1, 0.1 * inch)) if contract.purchaser_signature_b64: try: sig_b64 = contract.purchaser_signature_b64 if "," in sig_b64: sig_b64 = sig_b64.split(",", 1)[1] sig_bytes = base64.b64decode(sig_b64) sig_img = RLImage(BytesIO(sig_bytes), width=2.5 * inch, height=0.75 * inch) story.append(Paragraph("Purchaser Signature:", normal)) story.append(Spacer(1, 0.05 * inch)) sig_img_table = Table([[sig_img]], colWidths=[2.5 * inch], rowHeights=[0.75 * inch]) sig_img_table.setStyle(TableStyle([ ("ALIGN", (0, 0), (-1, -1), "LEFT"), ("VALIGN", (0, 0), (-1, -1), "MIDDLE"), ("BOX", (0, 0), (-1, -1), 0.5, colors.HexColor("#d1d5db")), ])) story.append(sig_img_table) except Exception: story.append(Paragraph("Purchaser Signature: [on file]", normal)) else: story.append(Paragraph("Purchaser Signature: [on file]", normal)) story.append(Spacer(1, 0.1 * inch)) story.append(Paragraph(f"Purchaser Name: {contract.purchaser_name or '—'}", normal)) story.append(Spacer(1, 0.1 * inch)) story.append(Paragraph(f"Witness Name: {contract.witness_name or '—'}", normal)) story.append(Spacer(1, 0.2 * inch)) story.append(Paragraph( "This document constitutes a legally binding agreement between the purchaser " "and INDELIS Cemetery upon execution by both parties.", small_style, )) doc.build(story) return buf.getvalue()