"""Admission guards for complete pytest evidence and world/repeat coverage."""


def report_health(report, expected_ids=None):
    if not isinstance(report, dict):
        return ['Missing pytest report']
    issues = []
    ids = report.get('collected', [])
    if not ids or len(ids) != len(set(ids)):
        issues.append('Empty or duplicate case collection')
    if report.get('testscollected') != len(ids):
        issues.append('Collection count mismatch')
    if expected_ids is not None and set(ids) != set(expected_ids):
        issues.append('Case inventory drift')
    if report.get('collection_errors') or report.get('internal_errors'):
        issues.append('Collection or internal error')
    reports = report.get('reports', [])
    if set(x.get('nodeid') for x in reports) != set(ids):
        issues.append('Case report coverage mismatch')
    calls = []
    for nodeid in ids:
        phases = [x for x in reports if x.get('nodeid') == nodeid]
        if sorted(x.get('when', '') for x in phases) != ['call', 'setup', 'teardown']:
            issues.append(f'Incomplete/duplicate phases: {nodeid}')
        for p in phases:
            if p.get('when') == 'call':
                calls.append(p.get('outcome'))
                if p.get('outcome') not in ('passed', 'failed') or p.get('wasxfail'):
                    issues.append(f'Skipped/xfail/unknown case: {nodeid}')
            elif p.get('outcome') != 'passed':
                issues.append(f'Setup/teardown error: {nodeid}')
    expected_exit = 1 if 'failed' in calls else 0
    if report.get('exitstatus') != expected_exit:
        issues.append('Exit status disagrees with case outcomes')
    return issues


def matrix_health(runs, worlds, repeats):
    from collections import Counter
    actual = Counter((r.get('world'), r.get('repeat')) for r in runs)
    expected = Counter((w, n) for w in worlds for n in range(1, repeats + 1))
    return [] if actual == expected else ['Missing, duplicate or unexpected world/repeat']