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#!/usr/bin/env python3

from __future__ import annotations

import re

import sys

from utils import get_current_package_version, get_published_package_versions, set_current_package_version

# Checks whether the current package version number was not already used in a published release,

# and if not, modifies the package version number in pyproject.toml

# from a stable release version (X.Y.Z) to a prerelease version (X.Y.ZbN or X.Y.Z.aN or X.Y.Z.rcN)

if __name__ == '__main__':

if len(sys.argv) != 2:

raise RuntimeError('You must pass the prerelease type as an argument to this script!')

prerelease_type = sys.argv[1]

if prerelease_type not in ['alpha', 'beta', 'rc']:

raise RuntimeError(f'The prerelease type must be one of "alpha", "beta" or "rc", got "{prerelease_type}"!')

if prerelease_type == 'alpha':

prerelease_prefix = 'a'

elif prerelease_type == 'beta':

prerelease_prefix = 'b'

elif prerelease_type == 'rc':

prerelease_prefix = 'rc'

current_version = get_current_package_version()

# We can only transform a stable release version (X.Y.Z) to a prerelease version (X.Y.ZxxxN)

if not re.match(r'^\d+\.\d+\.\d+$', current_version):

raise RuntimeError(

f'The current version {current_version} does not match the proper semver format for stable releases (X.Y.Z)'

)

# Load the version numbers of the currently published versions from PyPI

published_versions = get_published_package_versions()

# We don't want to publish a prerelease version with the same version number as an already released stable version

if current_version in published_versions:

raise RuntimeError(f'The current version {current_version} was already released!')

# Find the highest prerelease version number that was already published

latest_prerelease = 0

for version in published_versions:

if version.startswith(f'{current_version}{prerelease_prefix}'):

prerelease_version = int(version.split(prerelease_prefix)[1])

if prerelease_version > latest_prerelease:

latest_prerelease = prerelease_version

# Write the latest prerelease version number to pyproject.toml

new_prerelease_version_number = f'{current_version}{prerelease_prefix}{latest_prerelease + 1}'

set_current_package_version(new_prerelease_version_number)