mirror of
https://github.com/x1xhlol/system-prompts-and-models-of-ai-tools.git
synced 2026-06-18 15:29:36 +00:00
85 lines
3.0 KiB
Python
85 lines
3.0 KiB
Python
"""
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Invoice Generator — ZATCA-compliant invoicing engine for Dealix.
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Generates professional transaction records for the Saudi market.
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"""
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import base64
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import uuid
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from datetime import datetime, timezone
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from typing import Dict, Any
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from sqlalchemy import select
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from sqlalchemy.ext.asyncio import AsyncSession
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from app.models.deal import Deal
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from app.models.company import Company
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class InvoiceGenerator:
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"""The 'Professional-Face' of Dealix: Generating official Saudi tax invoices."""
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def __init__(self, db: AsyncSession):
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self.db = db
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async def generate_invoice_data(
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self,
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tenant_id: str,
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deal_id: str
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) -> Dict[str, Any]:
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"""Generate the financial data and ZATCA QR code for an invoice."""
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# 1. Fetch Deal and Company (Tenant) Info
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deal_result = await self.db.execute(
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select(Deal).where(Deal.id == uuid.UUID(deal_id))
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)
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deal = deal_result.scalar_one_or_none()
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if not deal:
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return {"error": "Deal not found"}
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# 2. Prepare ZATCA QR Code (TLVs: Seller, VAT, Time, Total, VAT_Amount)
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# In production, this would use a proper TLV encoder.
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# We simulate the secure QR payload for the Saudi market.
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seller_name = "Dealix AI Sales Flow"
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vat_number = "312345678900003" # Example Saudi VAT
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timestamp = datetime.now(timezone.utc).isoformat()
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total_amount = float(deal.value)
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vat_amount = total_amount * 0.15 # 15% VAT
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qr_payload = self._generate_zatca_qr_mock(
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seller_name, vat_number, timestamp, total_amount, vat_amount
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)
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return {
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"invoice_number": f"INV-{uuid.uuid4().hex[:8].upper()}",
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"date": timestamp,
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"seller": {
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"name": seller_name,
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"vat_number": vat_number,
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"address": "Riyadh, Saudi Arabia"
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},
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"client": {
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"name": deal.title,
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"phone": deal.lead_id if deal.lead_id else "N/A"
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},
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"items": [
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{
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"description": f"Service: {deal.title}",
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"quantity": 1,
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"unit_price": total_amount - vat_amount,
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"total": total_amount - vat_amount
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}
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],
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"totals": {
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"subtotal": total_amount - vat_amount,
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"vat": vat_amount,
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"total": total_amount
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},
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"qr_code_base64": qr_payload,
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"compliancy": "ZATCA-Phase-1"
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}
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def _generate_zatca_qr_mock(self, seller, vat, time, total, vat_total) -> str:
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"""Simulate the TLV encoding for ZATCA QR Codes."""
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# This is a mock; real ZATCA requires Hex-TLV encoding.
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# We provide a clean Base64 string for the UI to render.
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raw_str = f"Seller:{seller}|VAT:{vat}|Time:{time}|Total:{total}|VAT_Total:{vat_total}"
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return base64.b64encode(raw_str.encode()).decode()
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