"""QE-CONTRACT-01/1.0: invented numerical counterexamples, no operational data."""
import argparse,json
from pathlib import Path

def examples():
    notional=8000; rate_fraction=0.0001
    wrong_fast=notional*rate_fraction/100
    wrong_slow=sum(80*rate_fraction/100 for _ in range(100))
    price_before,price_start,price_end=100,110,105
    qty=10;initial=10000
    inherited_start=initial-qty*price_before+qty*price_start
    inherited_end=initial-qty*price_before+qty*price_end
    return {'schema':'QE-CONTRACT-01/1.0','synthetic':True,
      'units':{'notional_eur':notional,'fraction_per_side':rate_fraction,
               'declared_bps_per_side':1,'expected_cost_eur':notional*rate_fraction,
               'wrong_fast_eur':wrong_fast,'wrong_slow_eur':wrong_slow,
               'lesson':'Numerical agreement does not validate the commission unit.'},
      'boundary':{'prices':[price_before,price_start,price_end],'quantity':qty,
                  'continuous_equity_start':inherited_start,'continuous_equity_end':inherited_end,
                  'calendar_pnl':inherited_end-inherited_start,
                  'calendar_return_pct':100*(inherited_end/inherited_start-1),
                  'cohort_pnl_since_entry':qty*(price_end-price_before),
                  'empty_no_new_signal_pnl':0,'costs_assumed':0,
                  'lesson':'Same price path: calendar change, entry-cohort result and a fresh empty account answer different questions.'},
      'maturity':{'closed_trade_profits':[20,30],'open_mtm':[-80,-90,-60],
                  'realised':50,'unrealised':-230,'total_mtm_pnl':-180,
                  'initial_equity':10000,'final_equity':9820,
                  'lesson':'Open positions are marked at the cutoff, not treated as zero or as final realised outcomes.'},
      'neighbours':{'A':[10,-3,-4,1,-2],'B':[4,3,2,4,3],
                    'rule':'Five declared settings each; index 0 is the initial choice. These are invented dependent observations, not independent evidence or a probability of future profit.'}}

def main():
    p=argparse.ArgumentParser(description=__doc__);p.add_argument('--out',type=Path);a=p.parse_args()
    text=json.dumps(examples(),indent=2)+'\n'
    if a.out:
        with a.out.open('x',encoding='utf-8') as f:f.write(text)
    else:print(text,end='')
if __name__=='__main__':main()