# services.py
from io import BytesIO

from reportlab.lib import colors
from reportlab.lib.enums import TA_RIGHT, TA_CENTER
from reportlab.lib.pagesizes import A4
from reportlab.lib.styles import getSampleStyleSheet, ParagraphStyle
from reportlab.platypus import SimpleDocTemplate, Table, TableStyle, Paragraph, Spacer


class PDFService:
    @staticmethod
    def generate_vehicle_pdf(data):
        buffer = BytesIO()
        doc = SimpleDocTemplate(
            buffer, pagesize=A4,
            rightMargin=40, leftMargin=40,
            topMargin=40, bottomMargin=40
        )
        styles = getSampleStyleSheet()

        cell_style = ParagraphStyle(
            'CellStyle', parent=styles['Normal'],
            fontSize=9, leading=11
        )
        cell_style_bold = ParagraphStyle(
            'CellStyleBold', parent=cell_style,
            fontName='Helvetica-Bold',
            textColor=colors.red
        )
        header_style = ParagraphStyle(
            'HeaderStyle', parent=styles['Normal'],
            alignment=TA_RIGHT, fontSize=10, leading=12
        )
        title_style = ParagraphStyle(
            'TitleStyle', parent=styles['Normal'],
            alignment=TA_CENTER, fontSize=14, leading=16
        )

        elements = []

        header_text = (
            f'<b>"Sifat baholash" MChJ direktori<br/>'
            f"T.R.To'rayevga</b><br/><br/>"
            f"{data.get('address', '')}<br/>"
            f"ro'yxatda turuvchi fuqaro<br/>"
            f"<u>{data.get('person_name', '')}</u> tomonidan<br/>"
            f"<u>Avtotransport vositasini baholash uchun</u>"
        )
        elements.append(Paragraph(header_text, header_style))
        elements.append(Spacer(1, 25))

        elements.append(Paragraph("<b>A R I Z A</b>", title_style))
        elements.append(Spacer(1, 10))
        elements.append(Paragraph(
            "Ushbu orqali quyidagi avtotransport vositasini baholab berishingizni so'rayman:",
            cell_style
        ))
        elements.append(Spacer(1, 10))

        date_created = data.get('date_created')
        year_str = str(date_created.year) + " yil" if date_created else ""

        tec_date = data.get('tec_passport_date')
        tec_date_str = tec_date.strftime('%d.%m.%Y yil') if tec_date else ""

        raw_data = [
            ["Mulk egasi",                  data.get('property_owner', '')],
            ["Manzil",                       data.get('address', '')],
            ["Marka",                        data.get('marka', '')],
            ["Model",                        data.get('model', '')],
            ["Komplektatsiya",               data.get('configuration', '')],
            ["Davlat raqami",                data.get('auto_number', '')],
            ["Ishlab chiqarilgan yili",      year_str],
            ["Bosib o'tgan masofasi",        f"{data.get('mileage', 0):,}".replace(',', ' ')],
            ["№ kuzov (VIN)",                data.get('vehicle_identification', '')],
            ["№ dvigatel",                   data.get('engine_number', '')],
            ["Rang",                         data.get('colour', '')],
            ["Texnik passport seriyasi",     data.get('registration_certificate_series', '')],
            ["Texnik passport raqami",       data.get('tec_passport_number', '')],
            ["Texnik passport berilgan sanasi", tec_date_str],
            ["Texnik passport berilgan joyi", data.get('tec_passport_place', '')],
            ["Kuzov turi",                   data.get('body_type', '')],
            ["Shassi",                       data.get('chassis', '')],
            ["Davlat belgisi (plate)",       data.get('plate', '')],  # ← was missing
        ]

        table_data = [
            [Paragraph(row[0], cell_style), Paragraph(str(row[1]), cell_style_bold)]
            for row in raw_data
        ]
        table = Table(table_data, colWidths=[170, 345])
        table.setStyle(TableStyle([
            ('GRID',          (0, 0), (-1, -1), 0.5, colors.black),
            ('VALIGN',        (0, 0), (-1, -1), 'TOP'),
            ('LEFTPADDING',   (0, 0), (-1, -1), 6),
            ('TOPPADDING',    (0, 0), (-1, -1), 4),
            ('BOTTOMPADDING', (0, 0), (-1, -1), 4),
        ]))
        elements.append(table)
        elements.append(Spacer(1, 15))

        elements.append(Paragraph("<b>Baholash maqsadi:</b>", cell_style))
        purpose_raw = [
            ["Aniqlanayotgan qiymat turi", data.get('value_type', '')],
            ["Baholash maqsadi",           data.get('evaluation_purpose', '')],
        ]
        purpose_data = [
            [Paragraph(r[0], cell_style), Paragraph(str(r[1]), cell_style_bold)]
            for r in purpose_raw
        ]
        pt = Table(purpose_data, colWidths=[170, 345])
        pt.setStyle(TableStyle([
            ('GRID',   (0, 0), (-1, -1), 0.5, colors.black),
            ('VALIGN', (0, 0), (-1, -1), 'TOP'),
        ]))
        elements.append(pt)
        elements.append(Spacer(1, 15))

        elements.append(Paragraph("<b>Buyurtmachi rekvizitlari:</b>", cell_style))
        footer_raw = [
            ["Shaxsiy raqam (PINFL)", str(data.get('personal_id_number', ''))],
            ["ID karta raqami",       data.get('id_number', '')],
        ]
        footer_data = [
            [Paragraph(f[0], cell_style), Paragraph(str(f[1]), cell_style_bold)]
            for f in footer_raw
        ]
        ft = Table(footer_data, colWidths=[170, 345])
        ft.setStyle(TableStyle([
            ('GRID',   (0, 0), (-1, -1), 0.5, colors.black),
            ('VALIGN', (0, 0), (-1, -1), 'TOP'),
        ]))
        elements.append(ft)

        doc.build(elements)
        buffer.seek(0)
        return buffer