"""Execute actual opt-in parsing, admission and flag emission without native launch."""
import argparse, ast, contextlib, io, os
from pathlib import Path
ROOT = Path(__file__).resolve().parents[1]
p = Path(os.environ.get('ERR_RANDOM_RADIUS_RUNNER', ROOT / 'tools/headless_workbench.py'))
tree = ast.parse(p.read_text())
declarations = [n for n in tree.body if isinstance(n, ast.Expr) and isinstance(n.value, ast.Call)
                and isinstance(n.value.func, ast.Attribute) and isinstance(n.value.func.value, ast.Name)
                and n.value.func.value.id == 'p' and n.value.func.attr == 'add_argument']
selected = [n for n in tree.body if isinstance(n, ast.If) and any(isinstance(v, ast.Attribute)
            and v.attr == 'trace_random_radius' for v in ast.walk(n.test))]
guards = [n for n in selected if any(isinstance(v, ast.Call) and isinstance(v.func, ast.Attribute)
          and v.func.attr == 'error' for v in ast.walk(n))]
emissions = [n for n in selected if isinstance(n.body[0], ast.AugAssign)]
assert len(guards) == len(emissions) == 1
# Refusal must precede file-system/process setup.
resolve = next(n.lineno for n in tree.body if isinstance(n, ast.Assign) and isinstance(n.targets[0], ast.Tuple)
               and any(isinstance(v, ast.Name) and v.id == 'compat' for v in ast.walk(n.targets[0])))
assert guards[0].lineno < resolve
parser = argparse.ArgumentParser()
exec(compile(ast.Module(body=declarations, type_ignores=[]), str(p), 'exec'), {'p': parser, 'Path': Path})
base = ['--compat','/tmp/erri-unused-radius-prefix','--profile','/tmp/erri-unused-radius-profile']
assert not parser.parse_args(base).trace_random_radius
validate = compile(ast.Module(body=guards, type_ignores=[]), str(p), 'exec')
emit = compile(ast.Module(body=emissions, type_ignores=[]), str(p), 'exec')
def check(enabled=True, smoke='normal-escape-route', project='chat', rounds=1, timeout=420):
    a = parser.parse_args(base + ['--smoke',smoke,'--project',project,'--rounds',str(rounds),'--timeout',str(timeout)]
                          + (['--trace-random-radius'] if enabled else []))
    try:
        with contextlib.redirect_stderr(io.StringIO()): exec(validate, {'a': a, 'p': parser})
    except SystemExit as e:
        assert e.code == 2
        return False
    command = ['existing','-errSmokeOutcome',smoke]
    exec(emit, {'a': a, 'command': command})
    assert command == ['existing','-errSmokeOutcome',smoke] + (['-errTraceRandomRadius','1'] if enabled else [])
    return True
assert check() and check(timeout=600)
for changes in [dict(smoke='victory'),dict(project='core'),dict(rounds=0),dict(rounds=2),dict(timeout=419)]:
    assert not check(**changes), changes
assert check(enabled=False,smoke='victory',project='core',rounds=2,timeout=60)
print('PASS: zero-radius trace disabled by default, scoped before setup, exact opt-in emission; no native launch')