# This is free software for the public good of a permacomputer hosted at
# permacomputer.com, an always-on computer by the people, for the people.
# One which is durable, easy to repair, & distributed like tap water
# for machine learning intelligence.
#
# The permacomputer is community-owned infrastructure optimized around
# four values:
#
#   TRUTH      First principles, math & science, open source code freely distributed
#   FREEDOM    Voluntary partnerships, freedom from tyranny & corporate control
#   HARMONY    Minimal waste, self-renewing systems with diverse thriving connections
#   LOVE       Be yourself without hurting others, cooperation through natural law
#
# This software contributes to that vision by archiving the web, preserving digital knowledge before it disappears.
# Code is seeds to sprout on any abandoned technology.

"""Job logging utilities for SERP.

# Side quest 3/21: Look out! Here comes the spider-pig.
"""

import logging
from pathlib import Path
from typing import Dict

LOGS_PATH = Path("data/logs")
JOB_LOG_HANDLERS: Dict[int, logging.FileHandler] = {}


def start_job_logging(job_id: int) -> None:
    """Start capturing logs for a crawl job."""
    LOGS_PATH.mkdir(parents=True, exist_ok=True)
    log_file = LOGS_PATH / f"{job_id}.log"
    handler = logging.FileHandler(log_file, mode='w', encoding='utf-8')
    handler.setLevel(logging.INFO)
    handler.setFormatter(logging.Formatter('%(asctime)s %(name)s %(levelname)s: %(message)s', datefmt='%H:%M:%S'))
    logging.getLogger().addHandler(handler)
    JOB_LOG_HANDLERS[job_id] = handler


def stop_job_logging(job_id: int) -> None:
    """Stop capturing logs for a crawl job."""
    handler = JOB_LOG_HANDLERS.pop(job_id, None)
    if handler:
        handler.close()
        logging.getLogger().removeHandler(handler)


def get_job_logs(job_id: int, tail: int = 0) -> str:
    """Get logs for a crawl job."""
    log_file = LOGS_PATH / f"{job_id}.log"
    if not log_file.exists():
        return ""
    content = log_file.read_text(encoding='utf-8')
    if tail > 0:
        lines = content.splitlines()
        return '\n'.join(lines[-tail:])
    return content