"""High level logic for checking a project."""
from __future__ import annotations
import argparse
import os
import sys
import typing as t
from dataclasses import dataclass
from project_config.config import Config
from project_config.constants import Error, InterruptingError, ResultValue
from project_config.plugins import InvalidPluginFunction, Plugins
from project_config.reporters import get_reporter
from project_config.tree import Tree, TreeNodeFiles
from project_config.types import Rule
[docs]class InterruptCheck(Exception):
"""An action has reported an invalid context for a rule.
This exceptions prevents to continue executing subsecuents rules.
"""
[docs]class ConditionalsFalseResult(InterruptCheck):
"""A conditional must skip a rule."""
[docs]@dataclass
class Project:
"""Wrapper for a single project.
This class encapsulates all the high level logic to execute all
CLI commands against a project.
Its public method expose the commands that can be executed through
the CLI.
Args:
config_path (str): Custom configuration file path.
rootdir (str): Root directory of the project.
reporter_ (dict): Reporter to use.
color (bool): Colorized output in reporters.
"""
config_path: str
rootdir: str
reporter_: t.Dict[str, t.Any]
color: bool
[docs] def _load(
self,
fetch_styles: bool = True,
init_tree: bool = True,
) -> None:
self.config = Config(
self.rootdir,
self.config_path,
)
(
self.color,
self.reporter_,
self.rootdir,
) = self.config.guess_from_cli_arguments(
self.color,
self.reporter_,
self.rootdir,
)
if fetch_styles:
self.config.load_style()
if init_tree:
self.tree = Tree(self.rootdir)
self.reporter = get_reporter(
self.reporter_["name"],
self.reporter_["kwargs"],
self.color,
self.rootdir,
)
[docs] def _check_files_existence(
self,
files: TreeNodeFiles,
rule_index: int,
) -> None:
for f, (fpath, fcontent) in enumerate(files):
if fcontent is None: # file or directory does not exist
ftype = "directory" if fpath.endswith(("/", os.sep)) else "file"
self.reporter.report_error(
{
"message": f"Expected existing {ftype} does not exists",
"file": fpath,
"definition": f"rules[{rule_index}].files[{f}]",
},
)
[docs] def _check_files_absence(
self,
files: t.Union[t.List[str], t.Dict[str, str]],
rule_index: int,
) -> None:
if isinstance(files, dict):
for fpath, reason in files.items():
normalized_fpath = os.path.join(self.rootdir, fpath)
ftype = "directory" if fpath.endswith(("/", os.sep)) else "file"
exists = (
os.path.isdir(normalized_fpath)
if ftype == "directory"
else os.path.isfile(normalized_fpath)
)
if exists:
message = f"Expected absent {ftype} exists"
if reason:
message += f". {reason}"
self.reporter.report_error(
{
"message": message,
"file": f"{fpath}/"
if ftype == "directory"
else fpath,
"definition": (
f"rules[{rule_index}].files.not[{fpath}]"
),
},
)
else:
for f, fpath in enumerate(files):
normalized_fpath = os.path.join(self.rootdir, fpath)
ftype = "directory" if fpath.endswith(("/", os.sep)) else "file"
exists = (
os.path.isdir(normalized_fpath)
if ftype == "directory"
else os.path.isfile(normalized_fpath)
)
if exists:
self.reporter.report_error(
{
"message": f"Expected absent {ftype} exists",
"file": fpath,
"definition": f"rules[{rule_index}].files.not[{f}]",
},
)
[docs] def _process_conditionals_for_rule(
self,
conditionals: t.List[str],
tree: Tree,
rule: Rule,
rule_index: int,
) -> None:
conditional_failed = False
for conditional in conditionals:
try:
action_function = (
self.config.style.plugins.get_function_for_action(
conditional,
)
)
except InvalidPluginFunction as exc:
self.reporter.report_error(
{
"message": exc.message,
"definition": f"rules[{rule_index}].{conditional}",
},
)
raise InterruptCheck()
for breakage_type, breakage_value in action_function(
# typed dict with dinamic key, this type must be ignored
# until some literal quirk comes, see:
# https://stackoverflow.com/a/59583427/9167585
rule[conditional], # type: ignore
tree,
rule,
):
if breakage_type in (InterruptingError, Error):
breakage_value["definition"] = (
f"rules[{rule_index}]" + breakage_value["definition"]
)
self.reporter.report_error(breakage_value)
conditional_failed = True
elif breakage_type == ResultValue:
if breakage_value is False:
raise ConditionalsFalseResult()
else:
break
else:
raise NotImplementedError(
f"Breakage type '{breakage_type}' is not implemented"
" for conditionals checking",
)
if conditional_failed:
raise InterruptCheck()
[docs] def _run_check(self) -> None:
for r, rule in enumerate(self.config["style"]["rules"]):
files = rule.pop("files")
if isinstance(files, list):
self.tree.cache_files(files)
# check if files exists
self._check_files_existence(self.tree.files, r)
else:
# requiring absent of files
self._check_files_absence(files["not"], r)
continue # any other verb can be used in the rule
hint = rule.pop("hint", None)
verbs, conditionals = ([], [])
for action in rule:
if action.startswith("if"):
conditionals.append(action)
else:
verbs.append(action)
# handle conditionals
try:
self._process_conditionals_for_rule(
conditionals,
self.tree,
rule,
r,
)
except ConditionalsFalseResult:
# conditionals skipping the rule, next...
continue
# handle verbs
for verb in verbs:
try:
action_function = (
self.config.style.plugins.get_function_for_action(
verb,
)
)
except InvalidPluginFunction as exc:
self.reporter.report_error(
{
"message": exc.message,
"definition": f"rules[{r}].{verb}",
},
)
raise InterruptCheck()
# TODO: show 'INTERRUPTED' in report
for breakage_type, breakage_value in action_function(
rule[verb],
self.tree,
rule,
):
if breakage_type == Error:
# prepend rule index to definition, so plugins do not
# need to specify them
breakage_value["definition"] = (
f"rules[{r}]" + breakage_value["definition"]
)
# show hint if defined in the rule
if hint:
breakage_value["hint"] = hint
self.reporter.report_error(breakage_value)
elif breakage_type == InterruptingError:
breakage_value["definition"] = (
f"rules[{r}]" + breakage_value["definition"]
)
self.reporter.report_error(breakage_value)
raise InterruptCheck()
# TODO: show 'INTERRUPTED' in report
else:
raise NotImplementedError(
f"Breakage type '{breakage_type}' is not"
" implemented for verbal checking",
)
[docs] def check(self, args: argparse.Namespace) -> None:
"""Checks that the styles configured for a project match.
Raises an error if report errors.
"""
self._load()
try:
self._run_check()
except InterruptCheck:
pass
finally:
self.reporter.raise_errors()
[docs] def show(self, args: argparse.Namespace) -> None:
"""Show configuration or fetched style for a project.
It will depend in the ``args.data`` property.
"""
if args.data == "cache":
from project_config.cache import Cache
report = Cache.get_directory()
else:
if args.data == "config":
self._load(fetch_styles=False, init_tree=False)
data = self.config.dict_
data.pop("cache")
data["cache"] = data.pop("_cache")
elif args.data == "plugins":
self._load(fetch_styles=False, init_tree=False)
data = Plugins( # type: ignore
prepare_all=True,
).plugin_action_names
else: # style
self._load(init_tree=False)
data = self.config.dict_.pop("style") # type: ignore
report = self.reporter.generate_data_report(args.data, data)
sys.stdout.write(f"{report}\n")
[docs] def clean(self, args: argparse.Namespace) -> None:
"""Cleaning command."""
from project_config.cache import Cache
if Cache.clean():
sys.stdout.write("Cache removed successfully!\n")