from __future__ import annotations import base64 from datetime import date, datetime, timezone from io import BytesIO from pathlib import Path from urllib.request import Request, urlopen from fpdf import FPDF from app.models import NimitSevakReceiptRequest from app.services.font_resolver import resolve_gujarati_font_paths REGULAR_FONT_NAME = "GujaratiRegular" BOLD_FONT_NAME = "GujaratiBold" BODY_TEXT = (35, 31, 32) PAGE_WIDTH_MM = 210 PAGE_HEIGHT_MM = 297 GUJARATI_DIGIT_TRANSLATION = str.maketrans("0123456789", "૦૧૨૩૪૫૬૭૮૯") # Layout controls. Adjust x, y, font_size, and font_name for text placement. FORM_NUMBER_BOX = { "x": 179.0, "y": 44, "font_size": 12, "font_name": BOLD_FONT_NAME, } PHOTO_FRAME = { "x": 161.0, "y": 53.0, "w": 42.0, "h": 50.0, "inset_x": 1.8, "inset_y": 1.8, "scale": 0.99, } FIELD_NAME = { "x": 8, "y": 65, "font_size": 14, "font_name": REGULAR_FONT_NAME, } FIELD_ADDRESS = { "x": 8, "y": 74, "font_size": 14, "font_name": REGULAR_FONT_NAME, "width": 150, "line_height": 5.4, } FIELD_AADHAR = { "x": 8, "y": 92, "font_size": 14, "font_name": REGULAR_FONT_NAME, } FIELD_MOBILE = { "x": 90.0, "y": 92, "font_size": 14, "font_name": REGULAR_FONT_NAME, } FIELD_OCCUPATION = { "x": 8, "y": 101, "font_size": 14, "font_name": REGULAR_FONT_NAME, } FIELD_AGE = { "x": 90.0, "y": 101, "font_size": 14, "font_name": REGULAR_FONT_NAME, } FIELD_PRADESH = { "x": 8, "y": 110, "font_size": 14, "font_name": REGULAR_FONT_NAME, } # FIELD_MANDAL = { # "x": 64.5, # "y": 104, # "font_size": 14, # "font_name": BOLD_FONT_NAME, # } FIELD_REFERENCE = { "x": 90.0, "y": 110, "font_size": 14, "font_name": REGULAR_FONT_NAME, } SEVA_SECTION = { "x": 8.0, "y": 130.0, "width": 180.0, "font_size": 14, "font_name": REGULAR_FONT_NAME, "line_height": 6.3, } PRAYER_POINTS_SECTION = { "x": 8.0, "y": 147.0, "width": 180.0, "font_size": 14, "font_name": REGULAR_FONT_NAME, "line_height": 6.3, "gap": 2.2, } class ReceiptPDF(FPDF): pass def _build_pdf() -> ReceiptPDF: pdf = ReceiptPDF(orientation="P", unit="mm", format="A4") pdf.set_auto_page_break(auto=False) pdf.set_margins(12, 12, 12) pdf.add_page() pdf.set_text_shaping(True) return pdf def _register_fonts(pdf: ReceiptPDF) -> None: regular_path, bold_path = resolve_gujarati_font_paths() pdf.add_font(REGULAR_FONT_NAME, style="", fname=str(regular_path)) pdf.add_font(BOLD_FONT_NAME, style="", fname=str(bold_path)) def generate_receipt_number() -> str: return f"NS-{datetime.now(timezone.utc).microsecond % 100000:05d}" def _normalize_text(value: str | None, fallback: str = "-") -> str: text = str(value or "").strip() return text or fallback def _format_list(values: list[str], fallback: str = "-") -> str: cleaned = [_normalize_text(value, "") for value in values] items = [value for value in cleaned if value] return ", ".join(items) if items else fallback def _format_gujarati_date(value: date | None) -> str: if value is None: return "-" return value.strftime("%d/%m/%Y").translate(GUJARATI_DIGIT_TRANSLATION) def _build_seva_list_text(payload: NimitSevakReceiptRequest) -> str: seva_items = list(payload.available_sevas) if payload.other_seva_details: seva_items.append(payload.other_seva_details) return f"સેવા યાદી :- {_format_list(seva_items)}" def _build_prayer_points(payload: NimitSevakReceiptRequest) -> list[str]: seva_from = _format_gujarati_date(payload.seva_available_from) seva_to = _format_gujarati_date(payload.seva_available_to) vehicle_from = _format_gujarati_date(payload.vehicle_available_from) vehicle_to = _format_gujarati_date(payload.vehicle_available_to) drivable_vehicles = _format_list(payload.drivable_vehicles) available_vehicles = _format_list(payload.available_vehicles) points = [ f"૧. હે સ્વામીજી, હું તારીખ {seva_from} થી {seva_to} સુધી મ.૨૮, ૪૧ પ્રમાણે નિમિત્ત બની આપને રાજી કરવા સેવામાં આવી શકીશ.", f"૨. મને {drivable_vehicles} ચલાવતા આવડે છે.", f"૩. હે સ્વામીજી, મારી પાસે {available_vehicles} છે. જે હું તારીખ {vehicle_from} થી {vehicle_to} સેવામાં લાવી શકું તેમ છું.", ] if payload.night_shift_available: points.append( "૪. હે સ્વામીજી!, દિવસે હું મારા વ્યવહાર/ વ્યવસાયમાં વ્યસ્ત હોઉ છું , પરંતુ મારે નિમિત બનવું છે , હું રાત્રે સેવા માં ચોક્કસ આવી શકીશ" ) return points def _decode_image(data: str | None): if not data: return None payload = data.split(",", 1)[1] if "," in data else data try: return BytesIO(base64.b64decode(payload)) except Exception: return None def _load_remote_image(url: str | None): if not url: return None try: request = Request(url, headers={"User-Agent": "sdm-receipt-service/1.0"}) with urlopen(request, timeout=15) as response: return BytesIO(response.read()) except Exception: return None def _load_local_image(path_value: str | None): if not path_value: return None try: candidate = Path(path_value).expanduser() if candidate.exists() and candidate.is_file(): return str(candidate) except Exception: return None return None def _load_form_background_image() -> str | None: project_root = Path(__file__).resolve().parents[2] background_path = project_root / "assets" / "images" / "form.jpg" if background_path.exists(): return str(background_path) return None def _set_text_color(pdf: ReceiptPDF, rgb: tuple[int, int, int]) -> None: pdf.set_text_color(*rgb) def _draw_centered_image(pdf: ReceiptPDF, image, x: float, y: float, w: float, h: float, *, scale: float = 0.96) -> None: target_w = w * scale target_h = h * scale offset_x = x + ((w - target_w) / 2) offset_y = y + ((h - target_h) / 2) pdf.image(image, x=offset_x, y=offset_y, w=target_w, h=target_h, keep_aspect_ratio=True) def _draw_form_number_box(pdf: ReceiptPDF, form_number: str) -> None: normalized_number = _normalize_text(form_number, "") if normalized_number: _set_text_color(pdf, BODY_TEXT) pdf.set_font(str(FORM_NUMBER_BOX["font_name"]), size=FORM_NUMBER_BOX["font_size"]) pdf.set_xy(FORM_NUMBER_BOX["x"], FORM_NUMBER_BOX["y"]) pdf.cell(0, 4.2, text=normalized_number) def _draw_text( pdf: ReceiptPDF, text: str, x: float, y: float, font_size: float, *, font_name: str = REGULAR_FONT_NAME, width: float | None = None, line_height: float = 5.0, ) -> float: value = _normalize_text(text, "") if not value: return y _set_text_color(pdf, BODY_TEXT) pdf.set_font(font_name, size=font_size) pdf.set_xy(x, y) if width is None: pdf.cell(0, line_height, text=value) return y + line_height else: pdf.multi_cell(width, line_height, text=value) return pdf.get_y() def generate_nimit_sevak_pdf(payload: NimitSevakReceiptRequest, receipt_number: str) -> bytes: pdf = _build_pdf() _register_fonts(pdf) pdf.set_title(f"Nimit Sevak Gujarati Receipt - {receipt_number}") background_image = _load_form_background_image() photo_image = ( _decode_image(payload.photo_image_base64) or _load_local_image(payload.profile_photo_url) or _load_remote_image(payload.profile_photo_url) ) form_number = _normalize_text(payload.form_no or payload.receipt_number or receipt_number, "") if background_image: pdf.image(background_image, x=0, y=0, w=PAGE_WIDTH_MM, h=PAGE_HEIGHT_MM) if photo_image: _draw_centered_image( pdf, photo_image, x=PHOTO_FRAME["x"] + PHOTO_FRAME["inset_x"], y=PHOTO_FRAME["y"] + PHOTO_FRAME["inset_y"], w=PHOTO_FRAME["w"] - (PHOTO_FRAME["inset_x"] * 2), h=PHOTO_FRAME["h"] - (PHOTO_FRAME["inset_y"] * 2), scale=PHOTO_FRAME["scale"], ) _draw_form_number_box(pdf, form_number) _draw_text(pdf, f"નામ :- શ્રી {_normalize_text(payload.applicant_name, '')}", FIELD_NAME["x"], FIELD_NAME["y"], FIELD_NAME["font_size"], font_name=str(FIELD_NAME["font_name"])) _draw_text( pdf, f"રહેઠાણ :- {_normalize_text(payload.address, '')}", FIELD_ADDRESS["x"], FIELD_ADDRESS["y"], FIELD_ADDRESS["font_size"], font_name=str(FIELD_ADDRESS["font_name"]), width=FIELD_ADDRESS["width"], line_height=FIELD_ADDRESS["line_height"], ) _draw_text(pdf, f"આધારકાર્ડ નં. :- {_normalize_text(payload.aadhar_card_no, '')}", FIELD_AADHAR["x"], FIELD_AADHAR["y"], FIELD_AADHAR["font_size"], font_name=str(FIELD_AADHAR["font_name"])) _draw_text(pdf, f"મો નં. :- {_normalize_text(payload.mobile_no, '')}", FIELD_MOBILE["x"], FIELD_MOBILE["y"], FIELD_MOBILE["font_size"], font_name=str(FIELD_MOBILE["font_name"])) _draw_text(pdf, f"વ્યવસાય :- {_normalize_text(payload.occupation, '')}", FIELD_OCCUPATION["x"], FIELD_OCCUPATION["y"], FIELD_OCCUPATION["font_size"], font_name=str(FIELD_OCCUPATION["font_name"])) _draw_text(pdf, f"ઉંમર :- {_normalize_text(payload.age, '')}, {_normalize_text(payload.gender, '')}", FIELD_AGE["x"], FIELD_AGE["y"], FIELD_AGE["font_size"], font_name=str(FIELD_AGE["font_name"])) _draw_text(pdf, f"પ્રદેશ :- {_normalize_text(payload.pradesh, '')}", FIELD_PRADESH["x"], FIELD_PRADESH["y"], FIELD_PRADESH["font_size"], font_name=str(FIELD_PRADESH["font_name"])) _draw_text(pdf, f"કાર્યકર્તા નું નામ :- {_normalize_text(payload.reference_person_name, '')}", FIELD_REFERENCE["x"], FIELD_REFERENCE["y"], FIELD_REFERENCE["font_size"], font_name=str(FIELD_REFERENCE["font_name"])) _draw_text( pdf, _build_seva_list_text(payload), SEVA_SECTION["x"], SEVA_SECTION["y"], SEVA_SECTION["font_size"], font_name=str(SEVA_SECTION["font_name"]), width=SEVA_SECTION["width"], line_height=SEVA_SECTION["line_height"], ) current_y = PRAYER_POINTS_SECTION["y"] for point in _build_prayer_points(payload): current_y = _draw_text( pdf, point, PRAYER_POINTS_SECTION["x"], current_y, PRAYER_POINTS_SECTION["font_size"], font_name=str(PRAYER_POINTS_SECTION["font_name"]), width=PRAYER_POINTS_SECTION["width"], line_height=PRAYER_POINTS_SECTION["line_height"], ) current_y += PRAYER_POINTS_SECTION["gap"] return bytes(pdf.output())