#!/usr/bin/env python3
"""Append a new parameter (column) to the end of a type's sheet in the master
template, and bump the template VERSION. After running, push the updated
assets/template/template.xlsx + VERSION to the Skill_Assets repo.

Usage: python append_parameter.py --type Diode --param "Reverse Recovery Time(ns)" \
         --template assets/template/template.xlsx
"""
import argparse, os, openpyxl
ap=argparse.ArgumentParser()
ap.add_argument("--type", required=True); ap.add_argument("--param", required=True)
ap.add_argument("--template", required=True)
a=ap.parse_args()
wb=openpyxl.load_workbook(a.template)
if a.type not in wb.sheetnames:
    raise SystemExit(f"no sheet '{a.type}' in template; sheets: {wb.sheetnames}")
ws=wb[a.type]
headers=[ws.cell(1,c).value for c in range(1, ws.max_column+1)]
if a.param in headers:
    raise SystemExit(f"'{a.param}' already exists in {a.type}")
ws.cell(1, ws.max_column+1, a.param)   # append at the end
wb.save(a.template)
vf=os.path.join(os.path.dirname(a.template), "VERSION")
v=int(open(vf).read().strip()) if os.path.exists(vf) else 1
v+=1; open(vf,"w").write(str(v))
print(f"Appended '{a.param}' to {a.type}. Template is now v{v}. "
      f"Push {os.path.basename(a.template)} + VERSION to the Skill_Assets repo.")