Merge pull request 'behruz' (#134) from behruz into main

Reviewed-on: #134

core/apps/documents/apps.py

@@ -0,0 +1,5 @@
+from django.apps import AppConfig
+
+
+class DocumentsConfig(AppConfig):
+    name = "core.apps.documents"

core/apps/documents/urls.py

@@ -0,0 +1,7 @@
+from django.urls import path
+
+from core.apps.documents.views.contract import ValuationReportPDFView
+
+urlpatterns = [
+    path('generate-contract-pdf/<int:pk>/', ValuationReportPDFView.as_view(), name='generate_contract_pdf'),
+]

core/apps/documents/views/contract.py

@@ -0,0 +1,387 @@
+from datetime import date
+from decimal import Decimal
+
+from django.shortcuts import get_object_or_404
+from django.template.loader import render_to_string
+from django.http import HttpResponse
+from rest_framework.views import APIView
+from rest_framework.response import Response
+from rest_framework import status
+from weasyprint import HTML
+
+from core.apps.evaluation.models import AutoEvaluationModel
+
+
+UZ_MONTHS = {
+    1: "yanvar", 2: "fevral", 3: "mart", 4: "aprel",
+    5: "may", 6: "iyun", 7: "iyul", 8: "avgust",
+    9: "sentabr", 10: "oktabr", 11: "noyabr", 12: "dekabr",
+}
+
+UZ_ONES = [
+    "", "bir", "ikki", "uch", "to'rt", "besh",
+    "olti", "yetti", "sakkiz", "to'qqiz",
+]
+UZ_TENS = [
+    "", "o'n", "yigirma", "o'ttiz", "qirq", "ellik",
+    "oltmish", "yetmish", "sakson", "to'qson",
+]
+
+
+def _format_currency(value):
+    if value is None:
+        return "0"
+    try:
+        int_val = int(Decimal(value))
+    except (ValueError, TypeError):
+        return "0"
+    return f"{int_val:,}".replace(",", " ")
+
+
+def _format_date(value):
+    if not value:
+        return ""
+    return value.strftime("%d.%m.%Y")
+
+
+def _three_digit_words(num):
+    if num == 0:
+        return ""
+    words = []
+    hundreds = num // 100
+    rest = num % 100
+    if hundreds:
+        if hundreds == 1:
+            words.append("bir yuz")
+        else:
+            words.append(f"{UZ_ONES[hundreds]} yuz")
+    tens = rest // 10
+    ones = rest % 10
+    if tens:
+        words.append(UZ_TENS[tens])
+    if ones:
+        words.append(UZ_ONES[ones])
+    return " ".join(words)
+
+
+def _number_to_uzbek_words(value):
+    if value is None:
+        return ""
+    try:
+        num = int(Decimal(value))
+    except (ValueError, TypeError):
+        return ""
+    if num == 0:
+        return "nol"
+
+    parts = []
+    billions = num // 1_000_000_000
+    millions = (num % 1_000_000_000) // 1_000_000
+    thousands = (num % 1_000_000) // 1_000
+    rest = num % 1_000
+
+    if billions:
+        parts.append(f"{_three_digit_words(billions)} milliard")
+    if millions:
+        parts.append(f"{_three_digit_words(millions)} million")
+    if thousands:
+        parts.append(f"{_three_digit_words(thousands)} ming")
+    if rest:
+        parts.append(_three_digit_words(rest))
+
+    text = " ".join(parts).strip()
+    return text[0].upper() + text[1:] if text else ""
+
+
+class ValuationReportPDFView(APIView):
+    """
+    Baholash hisobotini PDF formatida yuklab olish uchun API.
+
+    GET /api/documents/generate-contract-pdf/<pk>/
+    pk — AutoEvaluationModel id si.
+    """
+
+    def get(self, request, pk, *args, **kwargs):
+        return self._generate_pdf(request, pk)
+
+    def post(self, request, pk, *args, **kwargs):
+        return self._generate_pdf(request, pk)
+
+    def _generate_pdf(self, request, pk):
+        auto_evaluation = get_object_or_404(
+            AutoEvaluationModel.objects.select_related(
+                "vehicle",
+                "vehicle__brand",
+                "vehicle__model",
+                "vehicle__color",
+                "vehicle__fuel_type",
+                "vehicle__body_type",
+                "valuation",
+                "valuation__customer",
+                "valuation__property_owner",
+            ),
+            pk=pk,
+        )
+
+        context = self._build_context(auto_evaluation)
+
+        html_string = render_to_string("documents/contract.html", context)
+        base_url = request.build_absolute_uri("/")
+
+        try:
+            pdf_file = HTML(string=html_string, base_url=base_url).write_pdf()
+        except Exception as e:
+            return Response(
+                {"error": f"PDF yaratishda xatolik: {str(e)}"},
+                status=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            )
+
+        report_number = context["report"]["number"]
+        filename = f"baholash_hisoboti_{report_number}.pdf"
+
+        response = HttpResponse(pdf_file, content_type="application/pdf")
+        response["Content-Disposition"] = f'attachment; filename="{filename}"'
+        response["Content-Length"] = len(pdf_file)
+        return response
+
+    def _build_context(self, auto):
+        vehicle = auto.vehicle
+        valuation = auto.valuation
+        customer = valuation.customer if valuation else None
+        owner = valuation.property_owner if valuation and valuation.property_owner else customer
+        report = getattr(valuation, "report", None) if valuation else None
+
+        report_date = (
+            auto.rate_report_date
+            or auto.contract_date
+            or (report.created_at.date() if report else None)
+            or date.today()
+        )
+        valuation_date = auto.rate_date or report_date
+        inspection_date = auto.object_inspection_date or report_date
+
+        report_number = (
+            (report.report_number if report else None)
+            or auto.registration_number
+            or (valuation.conclusion_number if valuation else None)
+            or f"{auto.pk}/{report_date.year}"
+        )
+
+        final_value = None
+        if report and report.final_value is not None:
+            final_value = report.final_value
+        elif valuation and valuation.final_price is not None:
+            final_value = valuation.final_price
+        elif valuation and valuation.estimated_price is not None:
+            final_value = valuation.estimated_price
+
+        market_value_formatted = (
+            f"{_format_currency(final_value)} so'm" if final_value is not None else "0 so'm"
+        )
+        market_value_words = (
+            f"{_number_to_uzbek_words(final_value)} so'm"
+            if final_value is not None
+            else ""
+        )
+
+        cost_final = final_value
+        comparative_final = final_value
+
+        brand_name = ""
+        model_name = ""
+        if vehicle:
+            brand_name = vehicle.brand.name if vehicle.brand else ""
+            model_name = vehicle.model.name if vehicle.model else ""
+        if not brand_name:
+            brand_name = auto.car_brand or ""
+        if not model_name:
+            model_name = auto.car_model or ""
+        full_brand = f"{brand_name} {model_name}".strip()
+
+        plate_number = (vehicle.license_plate if vehicle else None) or auto.car_number or ""
+        manufacture_year = ""
+        if vehicle and vehicle.manufacture_year:
+            manufacture_year = str(vehicle.manufacture_year)
+        elif auto.manufacture_year:
+            manufacture_year = str(auto.manufacture_year)
+
+        production_date = f"{manufacture_year}-yil" if manufacture_year else ""
+        engine_number = (vehicle.engine_number if vehicle else None) or auto.car_dvigatel_number or ""
+        body_number = vehicle.vin_number if vehicle and vehicle.vin_number else ""
+        color_value = ""
+        if vehicle and vehicle.color:
+            color_value = vehicle.color.name
+        elif auto.car_color:
+            color_value = auto.car_color
+        fuel_type_value = ""
+        if vehicle and vehicle.fuel_type:
+            fuel_type_value = vehicle.fuel_type.name
+
+        tech_passport_value = ""
+        if vehicle and (vehicle.tech_passport_series or vehicle.tech_passport_number):
+            tech_passport_value = (
+                f"{vehicle.tech_passport_series or ''} № {vehicle.tech_passport_number or ''}"
+            ).strip()
+        elif auto.tex_passport_serie_num:
+            tech_passport_value = auto.tex_passport_serie_num
+
+        customer_ctx = self._customer_context(customer)
+        owner_ctx = self._owner_context(owner)
+        if not owner_ctx["name"]:
+            owner_ctx = customer_ctx
+
+        contract_ctx = self._contract_context(auto, report_date)
+
+        director_name = customer.director_name if customer and customer.director_name else "—"
+
+        ctx = {
+            "logo_url": "",
+            "report": {
+                "number": report_number,
+                "date": _format_date(report_date),
+                "valuation_date": _format_date(valuation_date),
+                "inspection_date": _format_date(inspection_date),
+                "year": str(report_date.year),
+                "market_value_formatted": market_value_formatted,
+                "market_value_words": market_value_words,
+            },
+            "vehicle": {
+                "brand": full_brand,
+                "plate_number": plate_number,
+                "production_date": production_date,
+                "production_year": manufacture_year,
+                "type": auto.get_object_type_display() if auto.object_type else "",
+                "engine_number": engine_number,
+                "body_number": body_number,
+                "chassis_number": body_number,
+                "color": color_value,
+                "tech_passport": tech_passport_value,
+                "fuel_type": fuel_type_value,
+                "engine_power": "",
+                "full_weight": "",
+                "empty_weight": "",
+            },
+            "customer": customer_ctx,
+            "owner": owner_ctx,
+            "contract": contract_ctx,
+            "company": {
+                "director": director_name,
+            },
+            "rates": {
+                "rur": "",
+                "usd": "",
+                "eur": "",
+            },
+            "inspection": {
+                "tires": "",
+                "engine": "",
+                "chassis": "",
+                "transmission": "",
+                "body": "",
+            },
+            "cost": {
+                "engine_volume": "",
+                "factory_price": _format_currency(cost_final),
+                "replacement_value": _format_currency(cost_final),
+                "wear_percent": "",
+                "final_value": _format_currency(cost_final),
+                "final_value_words": _number_to_uzbek_words(cost_final) + (" so'm" if cost_final else ""),
+            },
+            "comparative": {
+                "final_value": _format_currency(comparative_final),
+                "final_value_usd": "",
+                "final_value_words": _number_to_uzbek_words(comparative_final) + (" so'm" if comparative_final else ""),
+            },
+            "approach": {
+                "cost": {
+                    "value": _format_currency(cost_final),
+                    "weight": "30%",
+                    "weighted": "",
+                },
+                "comparative": {
+                    "value": _format_currency(comparative_final),
+                    "weight": "70%",
+                    "weighted": "",
+                },
+                "weighted_total": _format_currency(final_value),
+            },
+            "analog_1": self._empty_analog(),
+            "analog_2": self._empty_analog(),
+            "analog_3": self._empty_analog(),
+        }
+        return ctx
+
+    def _customer_context(self, customer):
+        empty = {
+            "name": "",
+            "address": "",
+            "phone": "",
+            "tin": "",
+            "account": "",
+            "bank": "",
+            "mfo": "",
+        }
+        if not customer:
+            return empty
+        if customer.customer_type == "legal":
+            return {
+                "name": customer.org_name or "",
+                "address": customer.org_address or "",
+                "phone": "",
+                "tin": customer.inn or "",
+                "account": customer.bank_account or "",
+                "bank": "",
+                "mfo": customer.mfo or "",
+            }
+        full_name = " ".join(
+            filter(None, [customer.last_name, customer.first_name, customer.middle_name])
+        )
+        return {
+            "name": full_name,
+            "address": customer.address or "",
+            "phone": "",
+            "tin": customer.jshshir or "",
+            "account": "",
+            "bank": "",
+            "mfo": "",
+        }
+
+    def _owner_context(self, owner):
+        empty = {"name": "", "address": ""}
+        if not owner:
+            return empty
+        type_field = getattr(owner, "owner_type", None) or getattr(owner, "customer_type", None)
+        if type_field == "legal":
+            return {
+                "name": owner.org_name or "",
+                "address": owner.org_address or "",
+            }
+        full_name = " ".join(
+            filter(None, [owner.last_name, owner.first_name, owner.middle_name])
+        )
+        return {
+            "name": full_name,
+            "address": owner.address or "",
+        }
+
+    def _contract_context(self, auto, fallback_date):
+        contract_date = auto.contract_date or fallback_date
+        return {
+            "number": auto.registration_number or str(auto.pk),
+            "day": f"{contract_date.day:02d}",
+            "month": UZ_MONTHS.get(contract_date.month, ""),
+            "year": str(contract_date.year),
+        }
+
+    def _empty_analog(self):
+        return {
+            "source": "",
+            "phone": "",
+            "description": "",
+            "year": "",
+            "mileage": "",
+            "price": "",
+            "adjusted_price_1": "",
+            "final_price": "",
+            "weight": "",
+        }