initial commit with most code completed

requirements.txt

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+Click==7.0
+setuptools==40.8.0

setup.py

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+import os
+import io
+from setuptools import find_packages, setup
+
+DEPENDENCIES = ['Click']
+EXCLUDE_FROM_PACKAGES = []
+CURDIR = os.path.dirname(__file__)
+
+setup(
+    name="truefile",
+    version="1.0.0",
+    author="Xevion",
+    author_email="xevion@xevion.dev",
+    description="",
+    packages=find_packages(exclude=EXCLUDE_FROM_PACKAGES),
+    include_package_data=True,
+    entry_points='''
+        [console_scripts]
+        truefile=truefile.cli:cli
+    ''',
+    install_requires=DEPENDENCIES,
+)

truefile/cli.py

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+import click
+import os
+import imghdr
+import sys
+
+__file__
+
+@click.group()
+def cli():
+    pass
+
+def what(*args, **kwargs):
+    try:
+        return imghdr.what(*args, **kwargs)
+    except PermissionError:
+        return None
+
+@cli.command()
+def detect():
+    path = os.getcwd()
+    # Filter and map files down to absolute paths for FILES (not directories)
+    files = map(lambda file : file, [file for file in os.listdir(path)]) # abspath of all files in curdir
+    files = filter(os.path.isfile, files) # file not directory
+    files = zip(files, map(what, files)) # get scan of file type
+    files = filter(lambda x : x[1] is not None, files) # filter for only images
+    files = map(lambda x : (x[0], os.path.splitext(x[0])[1], x[1]), files)
+    largest = max(map(lambda x : len(x[0]), files))
+    print(largest)
+    print('\n'.join(map(lambda x : f'| {x[0]} -> {x[1]}', files)))
+
+@cli.command()
+def rename():
+    pass