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Clarity: isolate and extract each responsibility from an overloaded variable
[etc/vim.git] / src / black_primer / cli.py
1 #!/usr/bin/env python3
2
3 # coding=utf8
4
5 import asyncio
6 import logging
7 import sys
8 from datetime import datetime
9 from pathlib import Path
10 from shutil import rmtree, which
11 from tempfile import gettempdir
12 from typing import Any, Union
13
14 import click
15
16 from black_primer import lib
17
18
19 DEFAULT_CONFIG = Path(__file__).parent / "primer.json"
20 _timestamp = datetime.now().strftime("%Y%m%d%H%M%S")
21 DEFAULT_WORKDIR = Path(gettempdir()) / f"primer.{_timestamp}"
22 LOG = logging.getLogger(__name__)
23
24
25 def _handle_debug(
26     ctx: click.core.Context,
27     param: Union[click.core.Option, click.core.Parameter],
28     debug: Union[bool, int, str],
29 ) -> Union[bool, int, str]:
30     """Turn on debugging if asked otherwise INFO default"""
31     log_level = logging.DEBUG if debug else logging.INFO
32     logging.basicConfig(
33         format="[%(asctime)s] %(levelname)s: %(message)s (%(filename)s:%(lineno)d)",
34         level=log_level,
35     )
36     return debug
37
38
39 async def async_main(
40     config: str,
41     debug: bool,
42     keep: bool,
43     long_checkouts: bool,
44     rebase: bool,
45     workdir: str,
46     workers: int,
47 ) -> int:
48     work_path = Path(workdir)
49     if not work_path.exists():
50         LOG.debug(f"Creating {work_path}")
51         work_path.mkdir()
52
53     if not which("black"):
54         LOG.error("Can not find 'black' executable in PATH. No point in running")
55         return -1
56
57     try:
58         ret_val = await lib.process_queue(
59             config, work_path, workers, keep, long_checkouts, rebase
60         )
61         return int(ret_val)
62     finally:
63         if not keep and work_path.exists():
64             LOG.debug(f"Removing {work_path}")
65             rmtree(work_path, onerror=lib.handle_PermissionError)
66
67     return -2
68
69
70 @click.command(context_settings={"help_option_names": ["-h", "--help"]})
71 @click.option(
72     "-c",
73     "--config",
74     default=str(DEFAULT_CONFIG),
75     type=click.Path(exists=True),
76     show_default=True,
77     help="JSON config file path",
78 )
79 @click.option(
80     "--debug",
81     is_flag=True,
82     callback=_handle_debug,
83     show_default=True,
84     help="Turn on debug logging",
85 )
86 @click.option(
87     "-k",
88     "--keep",
89     is_flag=True,
90     show_default=True,
91     help="Keep workdir + repos post run",
92 )
93 @click.option(
94     "-L",
95     "--long-checkouts",
96     is_flag=True,
97     show_default=True,
98     help="Pull big projects to test",
99 )
100 @click.option(
101     "-R",
102     "--rebase",
103     is_flag=True,
104     show_default=True,
105     help="Rebase project if already checked out",
106 )
107 @click.option(
108     "-w",
109     "--workdir",
110     default=str(DEFAULT_WORKDIR),
111     type=click.Path(exists=False),
112     show_default=True,
113     help="Directory path for repo checkouts",
114 )
115 @click.option(
116     "-W",
117     "--workers",
118     default=2,
119     type=int,
120     show_default=True,
121     help="Number of parallel worker coroutines",
122 )
123 @click.pass_context
124 def main(ctx: click.core.Context, **kwargs: Any) -> None:
125     """primer - prime projects for blackening... 🏴"""
126     LOG.debug(f"Starting {sys.argv[0]}")
127     # TODO: Change to asyncio.run when Black >= 3.7 only
128     loop = asyncio.get_event_loop()
129     try:
130         ctx.exit(loop.run_until_complete(async_main(**kwargs)))
131     finally:
132         loop.close()
133
134
135 if __name__ == "__main__":  # pragma: nocover
136     main()