"""# Git-based Time Tracker.

Quick and dirty time tracker on git histories.

Uses the simple heuristics that each commit takes precisely one hour of work.
It will automatically trim commits below one hour if another commit occurred
less than an hour ago.

Usage:

```
python -m git_time_tracker REPO1 REPO2...
```

# Obligatory

This tool reports:

```
project    Jmaa/git-time-tracker.git                    3h 33m  (2024)
```

And the ([Hamster](https://github.com/projecthamster/hamster)) manual time tracker reports:

![](docs/obligatory-hamster.png)
"""

import argparse
import datetime
import logging
import sys
from pathlib import Path

from .data import HIDDEN_LABEL_PREFIX, HIDDEN_LABEL_TOTAL, WorkSample
from .format import cli
from .source import git_repo

logger = logging.getLogger(__name__)


DEFAULT_EST_TIME = datetime.timedelta(hours=1)
ZERO_DURATION = datetime.timedelta(seconds=0)
HOUR = datetime.timedelta(hours=1)
MINUTE = datetime.timedelta(minutes=1)


def parse_arguments():
    parser = argparse.ArgumentParser()
    parser.add_argument(
        '--git-repo',
        action='extend',
        nargs='+',
        type=Path,
        dest='repositories',
    )
    parser.add_argument(
        '--filter',
        action='extend',
        nargs='+',
        type=str,
        dest='sample_filter',
        default=[],
    )
    return parser.parse_args()


def main():
    logging.basicConfig()

    args = parse_arguments()

    shared_time_stamps: set[WorkSample] = set()
    for repo_path in args.repositories:
        logger.warning('Visit %s', repo_path)
        shared_time_stamps |= set(
            git_repo.iterate_samples_from_git_repository(repo_path),
        )

    shared_time_stamps = sorted(shared_time_stamps)

    for t in cli.generate_report(shared_time_stamps, sample_filter=args.sample_filter):
        sys.stdout.write(t)