"""Generate the access.log fixture for the access-log-report task.

Deterministic: same bytes every run. The fixture is deliberately awkward --
one user-agent carries escaped quotes, two byte counts are "-", four lines are
malformed in four different ways, and four request paths carry query strings.

Run with:  python tools/mk_access_log.py
"""

from pathlib import Path

OUT = (
    Path(__file__).resolve().parent.parent
    / "tasks"
    / "access-log-report"
    / "environment"
    / "logs"
    / "access.log"
)

MS = [
    3, 7, 11, 12, 14, 18, 21, 25, 28, 31, 35, 40, 44, 47, 52, 55, 58, 61,
    66, 70, 74, 78, 82, 85, 90, 95, 99, 104, 110, 118, 126, 133, 141, 150,
    162, 175,
]

PATHS = (
    ["/index.html"] * 12
    + ["/api/users"] * 8
    + ["/api/users?id=42"] * 4
    + ["/static/app.js"] * 6
    + ["/health"] * 3
    + ["/api/orders"] * 3
)

STATUS = [200] * 28 + [304] * 4 + [404] * 3 + [500]

MALFORMED = {
    7: '10.0.0.9 - - [10/Oct/2026:13:02:11 +0000] "GET /index.html HTTP/1.1" 200 512 "-" "curl/8.0"',
    19: '10.0.0.3 - - [10/Oct/2026:13:05:44 +0000] "POST /api/users HTTP/1.1" abc 300 "-" "curl/8.0" 44',
    28: '10.0.0.4 - - [10/Oct/2026:13:09:02 +0000] "GET /health HTTP/1.1" 200 0',
    37: "# rotated by logrotate at 2026-10-10T14:00:00Z",
}

UA_WEIRD = 'Mozilla/5.0 (\\"compatible\\"; bot) Gecko/20100101'


def build():
    valid = []
    for index in range(36):
        path = PATHS[index]
        method = "GET"
        if path == "/api/users" and index % 5 == 0:
            method = "POST"
        status = STATUS[index]
        if index in (9, 26):
            size = "-"
        else:
            size = str(200 + index * 13)
        ms = MS[(index * 7) % 36]
        referer = "-" if index % 4 == 0 else "https://example.com/"
        ua = UA_WEIRD if index in (5, 17) else "curl/8.5.0"
        line = (
            '10.0.0.%d - - [10/Oct/2026:13:%02d:%02d +0000] "%s %s HTTP/1.1" %d %s "%s" "%s" %d'
            % (index % 9 + 1, index // 2, (index * 17) % 60, method, path, status, size, referer, ua, ms)
        )
        valid.append(line)
    return valid


def main():
    lines = build()
    out = []
    source = iter(lines)
    for position in range(1, 41):
        if position in MALFORMED:
            out.append(MALFORMED[position])
        else:
            out.append(next(source))
    OUT.parent.mkdir(parents=True, exist_ok=True)
    with open(OUT, "w", encoding="utf-8", newline="\n") as handle:
        handle.write("\n".join(out) + "\n")
    print("wrote %s (%d lines, %d valid)" % (OUT, len(out), len(lines)))


if __name__ == "__main__":
    main()