#!/bin/env python3
import argparse
import re
import sqlite3
from typing import Any

REGEX = re.compile(
    r"^"
    r"{address space usage: (?P<used_bytes>-?\d+) bytes/(?P<used_mb>\w+)} "
    r"{rss usage: (?P<rss_bytes>-?\d+) bytes/(?P<rss_mb>\w+)} "
    r"\[pid: (?P<pid>\d+)\|app: -\|req: -/-\] (?P<ip>[0-9.]+) \(-\) "
    r"{(?P<vars>\d+) vars in (?P<var_bytes>\d+) bytes} "
    r"\[(?P<date>[0-9A-Za-z: ]+)\] (?P<method>\w+) (?P<url>.*?) => "
    r"generated (?P<resp_bytes>\d+) bytes in (?P<msecs>\d+) msecs "
    r"\((- http://hasty.ai)?(?P<proto>[A-Z0-9/.]+) (?P<status>\d+)\) "
    r"(?P<headers>\d+) headers in (?P<header_bytes>\d+) bytes "
    r"\((?P<switches>\d+) switches on core (?P<core>\d+)\) "
    r"(?P<agent>.*?)"
    r"( (?P<referer>https?://[^ ]*?))?( -)?( http(://|%3A%2F%2F)hasty\.ai)?"
    r"$"
)


def save_logs(logs: list[dict[str, Any]]) -> None:
    columns = sorted(REGEX.groupindex, key=lambda col: REGEX.groupindex[col])
    conn = sqlite3.Connection("logs.db")
    cur = conn.cursor()
    cur.execute(f"CREATE TABLE IF NOT EXISTS logs({', '.join(columns)})")
    params = ", ".join(["?"] * len(columns))
    cur.executemany(
        f"INSERT INTO logs VALUES ({params})",
        [[log[col] for col in columns] for log in logs],
    )
    conn.commit()
    conn.close()


def read_logs(path: str) -> list[dict[str, Any]]:
    with open(path, errors="replace") as fp:
        lines = fp.readlines()
    parsed = [
        (line, REGEX.match(line.strip()))
        for line in lines
        if line.startswith("{address space usage")
    ]
    for line, match in parsed:
        if not match:
            print("failed to parse:", line.strip())
    return [match.groupdict() for _, match in parsed if match]


def main():
    parser = argparse.ArgumentParser()
    parser.add_argument("logfile", default="uwsgi.log")
    args = parser.parse_args()
    save_logs(read_logs(args.logfile))


if __name__ == "__main__":
    main()