#!/usr/bin/env python3
"""Source-only regression guards for the OPT3 patch (NOT a Rust compile)."""
from pathlib import Path
root = Path(__file__).resolve().parents[2]

def read(name):
    return (root / name).read_text(encoding='utf-8')

assert 'version = "0.34.0"' in read('Cargo.toml')
acl = read('src/acl.rs')
assert "pub fn routing_path_view(raw: &str)" in acl
assert "return routing_path(raw).map(std::borrow::Cow::Owned)" in acl
assert 'raw.split' in acl and 'raw.len() <= 8192' in acl
forward = read('src/proxy/forward_entry.rs')
assert 'let routing_uri = request.uri().clone();' in forward
assert 'crate::acl::routing_path_view(routing_uri.path())' in forward
assert 'if context.client_ip != peer.0.ip()' in forward
route = read('src/proxy/cache_helpers.rs')
assert 'crate::acl::routing_path_view(request.uri().path())' in route
for name in ('src/proxy/forward/cache_lookup.rs', 'src/proxy/forward/success_finish.rs', 'src/proxy/forward/web_source.rs'):
    assert 'path.clone()' not in read(name), name
assert 'if !trusted_peer' in read('src/forwarding.rs')
assert 'let mut ips = chain(incoming).unwrap_or_default();' in read('src/forwarding.rs')
headers = read('src/proxy/headers.rs')
assert 'let only_keep_alive' in headers
assert 'let nominated: Vec<HeaderName>' in headers
assert 'headers.remove(name)' in headers
assert 'String::from_utf8(encoded)' in read('src/proxy/request_id.rs')
assert 'if reason == "cache_disabled"' in read('src/cache/stats.rs')
assert not read('src/cache/stats.rs').startswith('//!')  # previous E0753 build issue
for name in ('src/acl/tests.rs', 'src/proxy/headers/tests.rs', 'src/forwarding/tests.rs'):
    assert (root / name).exists()
for source in (root / 'src').rglob('*.rs'):
    if '/tests/' in source.as_posix() or source.name == 'tests.rs':
        continue
    assert len(source.read_text(encoding='utf-8').splitlines()) <= 500, source
print('PASS OPT3 source guards (STATIC ONLY; not cargo check, live HTTP or throughput)')