"""Generate the 3 fictitious PWG scan PDFs used by the pilot demo.

Run: python _generateScans.py

Produces:
    scans/mieter01-bestaetigt.pdf            -> all fields ok, signed
    scans/mieter02-abweichung-betrag.pdf     -> rent on scan != journal lines
    scans/mieter03-keine-unterschrift.pdf    -> hasSignature=false
"""
from pathlib import Path

from reportlab.lib.pagesizes import A4
from reportlab.pdfgen import canvas


def _renderForm(outPath: Path, *, tenantName: str, tenantAddress: str,
                objectAddress: str, period: str, rentChf: float,
                tenantNotes: str, hasSignature: bool) -> None:
    c = canvas.Canvas(str(outPath), pagesize=A4)
    w, h = A4
    margin = 60
    y = h - margin

    c.setFont("Helvetica-Bold", 16)
    c.drawString(margin, y, "Stiftung PWG")
    y -= 18
    c.setFont("Helvetica", 10)
    c.drawString(margin, y, "Postfach 1234 · 8000 Zürich")
    y -= 30

    c.setFont("Helvetica-Bold", 14)
    c.drawString(margin, y, f"Jahresmietzinsbestätigung {period}")
    y -= 28

    c.setFont("Helvetica", 11)
    c.drawString(margin, y, "Sehr geehrte Damen und Herren,")
    y -= 18
    c.drawString(margin, y, "hiermit bestätige ich die nachstehenden Angaben für die o.g. Periode:")
    y -= 28

    rows = [
        ("Mieter / in:", tenantName),
        ("Wohnadresse:", tenantAddress),
        ("Mietobjekt:", objectAddress),
        ("Periode:", period),
        ("Bestätigter Mietzins (CHF, monatlich):", f"{rentChf:.2f}"),
        ("Anmerkungen:", tenantNotes or "(keine)"),
    ]
    c.setFont("Helvetica", 11)
    for lab, val in rows:
        c.drawString(margin, y, lab)
        c.drawString(margin + 220, y, str(val))
        y -= 18
    y -= 28

    c.drawString(margin, y, "Ort, Datum: Zürich, 12.04.2026")
    y -= 28
    c.drawString(margin, y, "Unterschrift Mieter / in:")
    y -= 36

    if hasSignature:
        c.setFont("Helvetica-Oblique", 14)
        c.drawString(margin + 220, y + 24, _signatureFor(tenantName))
    else:
        c.setFont("Helvetica", 9)
        c.drawString(margin + 220, y + 24, "(handschriftlich)")
        c.line(margin + 215, y + 22, margin + 415, y + 22)

    c.showPage()
    c.save()


def _signatureFor(name: str) -> str:
    parts = name.split()
    if not parts:
        return "____"
    return parts[0][0] + ". " + parts[-1]


def _main() -> None:
    here = Path(__file__).resolve().parent
    outDir = here / "scans"
    outDir.mkdir(parents=True, exist_ok=True)

    # 1) bestätigt — exakt passend zu seed (Anna Müller, 1850.00)
    _renderForm(
        outDir / "mieter01-bestaetigt.pdf",
        tenantName="Anna Müller",
        tenantAddress="Bahnhofstrasse 12, 8001 Zürich",
        objectAddress="Bahnhofstrasse 12, 3.OG, 8001 Zürich",
        period="2026",
        rentChf=1850.00,
        tenantNotes="",
        hasSignature=True,
    )

    # 2) abweichung_betrag — Mieter trägt 2300 ein, Buchhaltung sagt 2200
    _renderForm(
        outDir / "mieter02-abweichung-betrag.pdf",
        tenantName="Beat Schneider",
        tenantAddress="Limmatquai 45, 8001 Zürich",
        objectAddress="Limmatquai 45, 1.OG, 8001 Zürich",
        period="2026",
        rentChf=2300.00,
        tenantNotes="Mietzins gemäss letzter Indexanpassung — bitte prüfen.",
        hasSignature=True,
    )

    # 3) keine_unterschrift — Carla Weber, 1650 stimmt, aber nicht unterschrieben
    _renderForm(
        outDir / "mieter03-keine-unterschrift.pdf",
        tenantName="Carla Weber",
        tenantAddress="Seestrasse 88, 8002 Zürich",
        objectAddress="Seestrasse 88, EG, 8002 Zürich",
        period="2026",
        rentChf=1650.00,
        tenantNotes="",
        hasSignature=False,
    )

    print(f"Generated 3 scans in {outDir}")


if __name__ == "__main__":
    _main()