"""Seed the Car Control database from the original "Car Service.xlsx".

Imports each car sheet (service log + parts catalog) by POSTing through the
API Server, so the full stack (client -> API Server -> PocketBase) is exercised.

Usage:
    pip install openpyxl requests
    set API_BASE=http://localhost:8080/api   (default)
    python scripts/seed_from_excel.py "C:/Users/jania/Desktop/Car Service.xlsx"

Idempotency: a car is created only if no car with the same name exists yet.
"""

import os
import sys
import datetime as dt

# Force UTF-8 stdout so console output works on Windows code pages (cp1250).
sys.stdout.reconfigure(encoding="utf-8")

import requests
import openpyxl

API_BASE = os.environ.get("API_BASE", "http://localhost:8080/api").rstrip("/")
DEFAULT_XLSX = r"C:/Users/jania/Desktop/Car Service.xlsx"


def yesno(v):
    return isinstance(v, str) and v.strip().lower() == "yes"


def split_make_model(title):
    parts = title.split(" ", 1)
    if len(parts) == 2:
        return parts[0], parts[1]
    return title, ""


def get_existing_cars():
    r = requests.get(f"{API_BASE}/cars", timeout=15)
    r.raise_for_status()
    return {c["name"]: c for c in r.json()}


def create_car(name, oil_spec):
    make, model = split_make_model(name)
    payload = {
        "name": name,
        "make": make,
        "model": model,
        "serviceIntervalDays": 365,
        "serviceIntervalKm": 15000,
        "oilSpec": oil_spec or "",
    }
    r = requests.post(f"{API_BASE}/cars", json=payload, timeout=15)
    r.raise_for_status()
    return r.json()


def create_service(car_id, date, km, e, f, g):
    payload = {
        "car": car_id,
        "date": date.strftime("%Y-%m-%dT00:00:00Z"),
        "km": int(km) if km else 0,
        "changedOil": yesno(e),
        "changedEngineAirFilter": yesno(f),
        "changedCabinAirFilter": yesno(g),
    }
    r = requests.post(f"{API_BASE}/service-records", json=payload, timeout=15)
    r.raise_for_status()
    return r.json()


def create_part(car_id, name, number):
    payload = {"car": car_id, "name": str(name), "partNumber": str(number) if number else ""}
    r = requests.post(f"{API_BASE}/parts", json=payload, timeout=15)
    r.raise_for_status()
    return r.json()


def seed_service_sheet(ws, existing):
    """Sheets like 'Toyota Yaris' / 'Toyota Avensis': service log + parts (M/N)."""
    name = ws.title

    # Oil spec lives in N2 (with the oil-filter etc. catalog below in M/N).
    oil_spec = ws["N2"].value
    if isinstance(oil_spec, str):
        oil_spec = " / ".join(line.strip() for line in oil_spec.splitlines() if line.strip())

    if name in existing:
        print(f"• {name} — car exists, skipping")
        return
    car = create_car(name, oil_spec)
    cid = car["id"]
    print(f"✓ {name} — car created ({cid})")

    services = parts = 0
    for row in range(4, ws.max_row + 1):
        date = ws.cell(row=row, column=1).value  # A
        if isinstance(date, dt.datetime):
            km = ws.cell(row=row, column=2).value  # B
            create_service(
                cid, date, km,
                ws.cell(row=row, column=5).value,  # E
                ws.cell(row=row, column=6).value,  # F
                ws.cell(row=row, column=7).value,  # G
            )
            services += 1

        pname = ws.cell(row=row, column=13).value   # M
        pnum = ws.cell(row=row, column=14).value    # N
        if pname and row >= 3:  # M3 onward are real parts (M2/N2 = oil header)
            create_part(cid, pname, pnum)
            parts += 1

    print(f"    {services} service records, {parts} parts")


def seed_reference_sheet(ws, existing):
    """Small sheets like 'Corolla Mama': just a parts reference (A/B columns)."""
    name = ws.title
    if name in existing:
        print(f"• {name} — car exists, skipping")
        return
    car = create_car(name, None)
    cid = car["id"]
    print(f"✓ {name} — car created ({cid})")
    parts = 0
    for row in range(1, ws.max_row + 1):
        pname = ws.cell(row=row, column=1).value  # A
        pnum = ws.cell(row=row, column=2).value   # B
        if pname:
            create_part(cid, pname, pnum)
            parts += 1
    print(f"    {parts} parts")


def main():
    path = sys.argv[1] if len(sys.argv) > 1 else DEFAULT_XLSX
    print(f"Reading {path}")
    print(f"Seeding via {API_BASE}")
    wb = openpyxl.load_workbook(path, data_only=True)
    existing = get_existing_cars()

    for ws in wb.worksheets:
        # Heuristic: a service sheet has the "Service" header layout (>= col G).
        if ws.max_column >= 7 and ws["A3"].value == "Date":
            seed_service_sheet(ws, existing)
        else:
            seed_reference_sheet(ws, existing)

    print("\nSeed complete.")


if __name__ == "__main__":
    main()