New upstream release tool (#80179)

1 files changed, 1420 insertions, 0 deletions

diff --git a/packaging/release.py b/packaging/release.py
new file mode 100755
index 0000000000..1d1ba37117
--- /dev/null
+++ b/packaging/release.py
@@ -0,0 +1,1420 @@
+#!/usr/bin/env python
+# PYTHON_ARGCOMPLETE_OK
+"""Manage upstream ansible-core releases."""
+
+from __future__ import annotations
+
+import argparse
+import contextlib
+import dataclasses
+import datetime
+import enum
+import functools
+import hashlib
+import http.client
+import inspect
+import json
+import math
+import os
+import pathlib
+import re
+import secrets
+import shlex
+import shutil
+import subprocess
+import sys
+import tarfile
+import tempfile
+import typing as t
+import urllib.error
+import urllib.parse
+import urllib.request
+import venv
+import webbrowser
+import zipfile
+
+import jinja2
+
+from packaging.version import Version, InvalidVersion
+
+# region CLI Framework
+
+
+C = t.TypeVar("C", bound=t.Callable[[...], None])
+
+
+def path_to_str(value: t.Any) -> str:
+    """Return the given value converted to a string suitable for use as a command line argument."""
+    return f"{value}/" if isinstance(value, pathlib.Path) and value.is_dir() else str(value)
+
+
+def run(
+    *args: t.Any,
+    env: dict[str, t.Any] | None,
+    cwd: pathlib.Path | str,
+    capture_output: bool = False,
+) -> CompletedProcess:
+    """Run the specified command."""
+    args = [arg.relative_to(cwd) if isinstance(arg, pathlib.Path) else arg for arg in args]
+
+    str_args = tuple(path_to_str(arg) for arg in args)
+    str_env = {key: path_to_str(value) for key, value in env.items()} if env is not None else None
+
+    display.show(f"--> {shlex.join(str_args)}", color=Display.CYAN)
+
+    try:
+        p = subprocess.run(str_args, check=True, text=True, env=str_env, cwd=cwd, capture_output=capture_output)
+    except subprocess.CalledProcessError as ex:
+        # improve type hinting and include stdout/stderr (if any) in the message
+        raise CalledProcessError(
+            message=str(ex),
+            cmd=str_args,
+            status=ex.returncode,
+            stdout=ex.stdout,
+            stderr=ex.stderr,
+        ) from None
+
+    # improve type hinting
+    return CompletedProcess(
+        args=str_args,
+        stdout=p.stdout,
+        stderr=p.stderr,
+    )
+
+
+@contextlib.contextmanager
+def suppress_when(error_as_warning: bool) -> None:
+    """Conditionally convert an ApplicationError in the provided context to a warning."""
+    if error_as_warning:
+        try:
+            yield
+        except ApplicationError as ex:
+            display.warning(ex)
+    else:
+        yield
+
+
+class ApplicationError(Exception):
+    """A fatal application error which will be shown without a traceback."""
+
+
+class CalledProcessError(Exception):
+    """Results from a failed process."""
+
+    def __init__(self, message: str, cmd: tuple[str, ...], status: int, stdout: str | None, stderr: str | None) -> None:
+        if stdout and (stdout := stdout.strip()):
+            message += f"\n>>> Standard Output\n{stdout}"
+
+        if stderr and (stderr := stderr.strip()):
+            message += f"\n>>> Standard Error\n{stderr}"
+
+        super().__init__(message)
+
+        self.cmd = cmd
+        self.status = status
+        self.stdout = stdout
+        self.stderr = stderr
+
+
+@dataclasses.dataclass(frozen=True)
+class CompletedProcess:
+    """Results from a completed process."""
+
+    args: tuple[str, ...]
+    stdout: str | None
+    stderr: str | None
+
+
+class Display:
+    """Display interface for sending output to the console."""
+
+    CLEAR = "\033[0m"
+    RED = "\033[31m"
+    BLUE = "\033[34m"
+    PURPLE = "\033[35m"
+    CYAN = "\033[36m"
+
+    def fatal(self, message: t.Any) -> None:
+        """Print a fatal message to the console."""
+        self.show(f"FATAL: {message}", color=self.RED)
+
+    def warning(self, message: t.Any) -> None:
+        """Print a warning message to the console."""
+        self.show(f"WARNING: {message}", color=self.PURPLE)
+
+    def show(self, message: t.Any, color: str | None = None) -> None:
+        """Print a message to the console."""
+        print(f"{color or self.CLEAR}{message}{self.CLEAR}", flush=True)
+
+
+class CommandFramework:
+    """
+    Simple command line framework inspired by nox.
+
+    Argument parsing is handled by argparse. Each function annotated with an instance of this class becomes a subcommand.
+    Options are shared across all commands, and are defined by providing kwargs when creating an instance of this class.
+    Options are only defined for commands which have a matching parameter.
+
+    The name of each kwarg is the option name, which will be prefixed with `--` and with underscores converted to dashes.
+    The value of each kwarg is passed as kwargs to ArgumentParser.add_argument. Passing None results in an internal only parameter.
+
+    The following custom kwargs are recognized and are not passed to add_argument:
+
+    name - Override the positional argument (option) passed to add_argument.
+    exclusive - Put the argument in an exclusive group of the given name.
+    """
+
+    def __init__(self, **kwargs: dict[str, t.Any] | None) -> None:
+        self.commands: list[C] = []
+        self.arguments = kwargs
+        self.parsed_arguments: argparse.Namespace | None = None
+
+    def __call__(self, func: C) -> C:
+        """Register the decorated function as a CLI command."""
+        self.commands.append(func)
+        return func
+
+    def run(self, *args: C, **kwargs) -> None:
+        """Run the specified command(s), using any provided internal args."""
+        for arg in args:
+            self._run(arg, **kwargs)
+
+    def main(self) -> None:
+        """Main program entry point."""
+        parser = argparse.ArgumentParser(description=__doc__)
+        subparsers = parser.add_subparsers(metavar="COMMAND", required=True)
+
+        for func in self.commands:
+            func_parser = subparsers.add_parser(self._format_command_name(func), description=func.__doc__, help=func.__doc__)
+            func_parser.set_defaults(func=func)
+
+            exclusive_groups = {}
+            signature = inspect.signature(func)
+
+            for name in signature.parameters:
+                if name not in self.arguments:
+                    raise RuntimeError(f"The '{name}' argument, used by '{func.__name__}', has not been defined.")
+
+                if (arguments := self.arguments.get(name)) is None:
+                    continue  # internal use
+
+                arguments = arguments.copy()
+                exclusive = arguments.pop("exclusive", None)
+
+                if exclusive:
+                    if exclusive not in exclusive_groups:
+                        exclusive_groups[exclusive] = func_parser.add_mutually_exclusive_group()
+
+                    command_parser = exclusive_groups[exclusive]
+                else:
+                    command_parser = func_parser
+
+                if option_name := arguments.pop("name", None):
+                    arguments.update(dest=name)
+                else:
+                    option_name = f"--{name.replace('_', '-')}"
+
+                command_parser.add_argument(option_name, **arguments)
+
+        try:
+            # noinspection PyUnresolvedReferences
+            import argcomplete
+        except ImportError:
+            pass
+        else:
+            argcomplete.autocomplete(parser)
+
+        self.parsed_arguments = parser.parse_args()
+
+        try:
+            self.run(self.parsed_arguments.func)
+        except ApplicationError as ex:
+            display.fatal(ex)
+            sys.exit(1)
+
+    def _run(self, func: C, **kwargs) -> None:
+        """Run the specified command, using any provided internal args."""
+        signature = inspect.signature(func)
+        func_args = {name: getattr(self.parsed_arguments, name) for name in signature.parameters if hasattr(self.parsed_arguments, name)}
+        func_args.update({name: value for name, value in kwargs.items() if name in signature.parameters})
+        printable_args = ", ".join(f"{name}={repr(value)}" for name, value in func_args.items())
+        label = f"{self._format_command_name(func)}({printable_args})"
+
+        display.show(f"==> {label}", color=Display.BLUE)
+
+        try:
+            func(**func_args)
+        except BaseException:
+            display.show(f"!!! {label}", color=Display.RED)
+            raise
+
+        display.show(f"<== {label}", color=Display.BLUE)
+
+    @staticmethod
+    def _format_command_name(func: C) -> str:
+        """Return the friendly name of the given command."""
+        return func.__name__.replace("_", "-")
+
+
+display = Display()
+
+
+# endregion
+# region Data Classes
+
+
+@dataclasses.dataclass(frozen=True)
+class GitHubRelease:
+    """Details required to create a GitHub release."""
+
+    user: str
+    repo: str
+    tag: str
+    target: str
+    title: str
+    body: str
+    pre_release: bool
+
+
+@dataclasses.dataclass(frozen=True)
+class PullRequest:
+    """Details required to create a pull request."""
+
+    upstream_user: str
+    upstream_repo: str
+    upstream_branch: str
+    user: str
+    repo: str
+    branch: str
+    title: str
+    body: str
+
+
+@dataclasses.dataclass(frozen=True)
+class Remote:
+    """Details about a git remote."""
+
+    name: str
+    user: str
+    repo: str
+
+
+@dataclasses.dataclass(frozen=True)
+class Remotes:
+    """Details about git removes."""
+
+    fork: Remote
+    upstream: Remote
+
+
+@dataclasses.dataclass(frozen=True)
+class GitState:
+    """Details about the state of the git repository."""
+
+    remotes: Remotes
+    branch: str | None
+    commit: str
+
+
+@dataclasses.dataclass(frozen=True)
+class ReleaseArtifact:
+    """Information about a release artifact on PyPI."""
+
+    package_type: str
+    package_label: str
+    url: str
+    size: int
+    digest: str
+    digest_algorithm: str
+
+
+@dataclasses.dataclass(frozen=True)
+class ReleaseAnnouncement:
+    """Contents of a release announcement."""
+
+    subject: str
+    body: str
+
+
+# endregion
+# region Utilities
+
+
+SCRIPT_DIR = pathlib.Path(__file__).parent.resolve()
+CHECKOUT_DIR = SCRIPT_DIR.parent
+
+ANSIBLE_LIB_DIR = CHECKOUT_DIR / "lib"
+ANSIBLE_DIR = ANSIBLE_LIB_DIR / "ansible"
+ANSIBLE_BIN_DIR = CHECKOUT_DIR / "bin"
+ANSIBLE_RELEASE_FILE = ANSIBLE_DIR / "release.py"
+ANSIBLE_REQUIREMENTS_FILE = CHECKOUT_DIR / "requirements.txt"
+
+DIST_DIR = CHECKOUT_DIR / "dist"
+VENV_DIR = DIST_DIR / ".venv" / "release"
+
+CHANGELOGS_DIR = CHECKOUT_DIR / "changelogs"
+CHANGELOGS_FRAGMENTS_DIR = CHANGELOGS_DIR / "fragments"
+
+ANSIBLE_VERSION_PATTERN = re.compile("^__version__ = '(?P<version>.*)'$", re.MULTILINE)
+ANSIBLE_VERSION_FORMAT = "__version__ = '{version}'"
+
+DIGEST_ALGORITHM = "sha256"
+
+# These endpoint names match those defined as defaults in twine.
+# See: https://github.com/pypa/twine/blob/9c2c0a1c535155931c3d879359330cb836950c6a/twine/utils.py#L82-L85
+PYPI_ENDPOINTS = dict(
+    pypi="https://pypi.org/pypi",
+    testpypi="https://test.pypi.org/pypi",
+)
+
+PIP_ENV = dict(
+    PIP_REQUIRE_VIRTUALENV="yes",
+    PIP_DISABLE_PIP_VERSION_CHECK="yes",
+)
+
+
+class VersionMode(enum.Enum):
+    """How to handle the ansible-core version."""
+
+    DEFAULT = enum.auto()
+    """Do not allow development versions. Do not allow post release versions."""
+    STRIP_POST = enum.auto()
+    """Do not allow development versions. Strip the post release from the version if present."""
+    REQUIRE_POST = enum.auto()
+    """Do not allow development versions. Require a post release version."""
+    REQUIRE_DEV_POST = enum.auto()
+    """Require a development or post release version."""
+    ALLOW_DEV_POST = enum.auto()
+    """Allow development and post release versions."""
+
+    def apply(self, version: Version) -> Version:
+        """Apply the mode to the given version and return the result."""
+        original_version = version
+
+        release_component_count = 3
+
+        if len(version.release) != release_component_count:
+            raise ApplicationError(f"Version {version} contains {version.release} release components instead of {release_component_count}.")
+
+        if version.epoch:
+            raise ApplicationError(f"Version {version} contains an epoch component: {version.epoch}")
+
+        if version.local is not None:
+            raise ApplicationError(f"Version {version} contains a local component: {version.local}")
+
+        if version.is_devrelease and version.is_postrelease:
+            raise ApplicationError(f"Version {version} is a development and post release version.")
+
+        if self == VersionMode.ALLOW_DEV_POST:
+            return version
+
+        if self == VersionMode.REQUIRE_DEV_POST:
+            if not version.is_devrelease and not version.is_postrelease:
+                raise ApplicationError(f"Version {version} is not a development or post release version.")
+
+            return version
+
+        if version.is_devrelease:
+            raise ApplicationError(f"Version {version} is a development release: {version.dev}")
+
+        if self == VersionMode.STRIP_POST:
+            if version.is_postrelease:
+                version = Version(str(version).removesuffix(f".post{version.post}"))
+                display.warning(f"Using version {version} by stripping the post release suffix from version {original_version}.")
+
+            return version
+
+        if self == VersionMode.REQUIRE_POST:
+            if not version.is_postrelease:
+                raise ApplicationError(f"Version {version} is not a post release version.")
+
+            return version
+
+        if version.is_postrelease:
+            raise ApplicationError(f"Version {version} is a post release.")
+
+        if self == VersionMode.DEFAULT:
+            return version
+
+        raise NotImplementedError(self)
+
+
+def git(*args: t.Any, capture_output: bool = False) -> CompletedProcess:
+    """Run the specified git command."""
+    return run("git", *args, env=None, cwd=CHECKOUT_DIR, capture_output=capture_output)
+
+
+def get_commit(rev: str | None = None) -> str:
+    """Return the commit associated with the given rev, or HEAD if no rev is given."""
+    try:
+        return git("rev-parse", "--quiet", "--verify", "--end-of-options", f"{rev or 'HEAD'}^{{commit}}", capture_output=True).stdout.strip()
+    except CalledProcessError as ex:
+        if ex.status == 1 and not ex.stdout and not ex.stderr:
+            raise ApplicationError(f"Could not find commit: {rev}") from None
+
+        raise
+
+
+def prepare_pull_request(version: Version, branch: str, title: str, add: t.Iterable[pathlib.Path | str], allow_stale: bool) -> PullRequest:
+    """Return pull request parameters using the provided details."""
+    git_state = get_git_state(version, allow_stale)
+
+    if not git("status", "--porcelain", "--untracked-files=no", capture_output=True).stdout.strip():
+        raise ApplicationError("There are no changes to commit. Did you skip a step?")
+
+    upstream_branch = get_upstream_branch(version)
+    body = create_pull_request_body(title)
+
+    git("checkout", "-b", branch)
+    git("add", *add)
+    git("commit", "-m", title)
+    git("push", "--set-upstream", git_state.remotes.fork.name, branch)
+    git("checkout", git_state.branch or git_state.commit)
+    git("branch", "-d", branch)
+
+    pr = PullRequest(
+        upstream_user=git_state.remotes.upstream.user,
+        upstream_repo=git_state.remotes.upstream.repo,
+        upstream_branch=upstream_branch,
+        user=git_state.remotes.fork.user,
+        repo=git_state.remotes.fork.repo,
+        branch=branch,
+        title=title,
+        body=body,
+    )
+
+    return pr
+
+
+def create_github_release(release: GitHubRelease) -> None:
+    """Open a browser tab for creating the given GitHub release."""
+    # See: https://docs.github.com/en/repositories/releasing-projects-on-github/automation-for-release-forms-with-query-parameters
+
+    params = dict(
+        tag=release.tag,
+        target=release.target,
+        title=release.title,
+        body=release.body,
+        prerelease=1 if release.pre_release else 0,
+    )
+
+    query_string = urllib.parse.urlencode(params)
+    url = f"https://github.com/{release.user}/{release.repo}/releases/new?{query_string}"
+
+    display.show("Opening release creation page in new tab using default browser ...")
+    webbrowser.open_new_tab(url)
+
+
+def create_pull_request(pr: PullRequest) -> None:
+    """Open a browser tab for creating the given pull request."""
+    # See: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/using-query-parameters-to-create-a-pull-request  # noqa
+
+    params = dict(
+        quick_pull=1,
+        title=pr.title,
+        body=pr.body,
+    )
+
+    query_string = urllib.parse.urlencode(params)
+    url = f"https://github.com/{pr.upstream_user}/{pr.upstream_repo}/compare/{pr.upstream_branch}...{pr.user}:{pr.repo}:{pr.branch}?{query_string}"
+
+    display.show("Opening pull request in new tab using default browser ...")
+    webbrowser.open_new_tab(url)
+
+
+def create_pull_request_body(title: str) -> str:
+    """Return a simple pull request body created from the given title."""
+    body = f"""
+##### SUMMARY
+
+{title}
+
+##### ISSUE TYPE
+
+Feature Pull Request
+
+##### COMPONENT NAME
+
+ansible
+"""
+
+    return body.lstrip()
+
+
+def get_remote(name: str, push: bool) -> Remote:
+    """Return details about the specified remote."""
+    remote_url = git("remote", "get-url", *(["--push"] if push else []), name, capture_output=True).stdout.strip()
+    remote_match = re.search(r"[@/]github[.]com[:/](?P<user>[^/]+)/(?P<repo>[^.]+)(?:[.]git)?$", remote_url)
+
+    if not remote_match:
+        raise RuntimeError(f"Unable to identify the user and repo in the '{name}' remote: {remote_url}")
+
+    remote = Remote(
+        name=name,
+        user=remote_match.group("user"),
+        repo=remote_match.group("repo"),
+    )
+
+    return remote
+
+
+@functools.cache
+def get_remotes() -> Remotes:
+    """Return details about the remotes we need to use."""
+    # assume the devel branch has its upstream remote pointing to the user's fork
+    fork_remote_name = git("branch", "--list", "devel", "--format=%(upstream:remotename)", capture_output=True).stdout.strip()
+
+    if not fork_remote_name:
+        raise ApplicationError("Could not determine the remote for your fork of Ansible.")
+
+    display.show(f"Detected '{fork_remote_name}' as the remote for your fork of Ansible.")
+
+    # assume there is only one ansible org remote, which would allow release testing using another repo in the same org without special configuration
+    all_remotes = git("remote", "-v", capture_output=True).stdout.strip().splitlines()
+    ansible_remote_names = set(line.split()[0] for line in all_remotes if re.search(r"[@/]github[.]com[:/]ansible/", line))
+
+    if not ansible_remote_names:
+        raise ApplicationError(f"Could not determine the remote which '{fork_remote_name}' was forked from.")
+
+    if len(ansible_remote_names) > 1:
+        raise ApplicationError(f"Found multiple candidates for the remote from which '{fork_remote_name}' was forked from: {', '.join(ansible_remote_names)}")
+
+    upstream_remote_name = ansible_remote_names.pop()
+
+    display.show(f"Detected '{upstream_remote_name}' as the remote from which '{fork_remote_name}' was forked from.")
+
+    if fork_remote_name == upstream_remote_name:
+        raise ApplicationError("The remote for your fork of Ansible cannot be the same as the remote from which it was forked.")
+
+    remotes = Remotes(
+        fork=get_remote(fork_remote_name, push=True),
+        upstream=get_remote(upstream_remote_name, push=False),
+    )
+
+    return remotes
+
+
+def get_upstream_branch(version: Version) -> str:
+    """Return the upstream branch name for the given version."""
+    return f"stable-{version.major}.{version.minor}"
+
+
+def get_git_state(version: Version, allow_stale: bool) -> GitState:
+    """Return information about the current state of the git repository."""
+    remotes = get_remotes()
+    upstream_branch = get_upstream_branch(version)
+
+    git("fetch", remotes.upstream.name, upstream_branch)
+
+    upstream_ref = f"{remotes.upstream.name}/{upstream_branch}"
+    upstream_commit = get_commit(upstream_ref)
+
+    commit = get_commit()
+
+    if commit != upstream_commit:
+        with suppress_when(allow_stale):
+            raise ApplicationError(f"The current commit ({commit}) does not match {upstream_ref} ({upstream_commit}).")
+
+    branch = git("branch", "--show-current", capture_output=True).stdout.strip() or None
+
+    state = GitState(
+        remotes=remotes,
+        branch=branch,
+        commit=commit,
+    )
+
+    return state
+
+
+@functools.cache
+def ensure_venv() -> dict[str, str]:
+    """Ensure the release venv is ready and return the env vars needed to use it."""
+
+    # TODO: consider freezing the ansible and release requirements along with their dependencies
+
+    ansible_requirements = ANSIBLE_REQUIREMENTS_FILE.read_text()
+
+    release_requirements = """
+build
+twine
+"""
+
+    requirements_file = CHECKOUT_DIR / "test/sanity/code-smell/package-data.requirements.txt"
+    requirements_content = requirements_file.read_text()
+    requirements_content += ansible_requirements
+    requirements_content += release_requirements
+
+    requirements_hash = hashlib.sha256(requirements_content.encode()).hexdigest()[:8]
+
+    python_version = ".".join(map(str, sys.version_info[:2]))
+
+    venv_dir = VENV_DIR / python_version / requirements_hash
+    venv_bin_dir = venv_dir / "bin"
+    venv_requirements_file = venv_dir / "requirements.txt"
+    venv_marker_file = venv_dir / "marker.txt"
+
+    env = os.environ.copy()
+    env.pop("PYTHONPATH", None)  # avoid interference from ansible being injected into the environment
+    env.update(
+        PATH=os.pathsep.join((str(venv_bin_dir), env["PATH"])),
+    )
+
+    if not venv_marker_file.exists():
+        display.show(f"Creating a Python {python_version} virtual environment ({requirements_hash}) ...")
+
+        if venv_dir.exists():
+            shutil.rmtree(venv_dir)
+
+        venv.create(venv_dir, with_pip=True)
+
+        venv_requirements_file.write_text(requirements_content)
+
+        run("pip", "install", "-r", venv_requirements_file, env=env | PIP_ENV, cwd=CHECKOUT_DIR)
+
+        venv_marker_file.touch()
+
+    return env
+
+
+def get_ansible_version(version: str | None = None, /, commit: str | None = None, mode: VersionMode = VersionMode.DEFAULT) -> Version:
+    """Parse and return the current ansible-core version, the provided version or the version from the provided commit."""
+    if version and commit:
+        raise ValueError("Specify only one of: version, commit")
+
+    if version:
+        source = ""
+    else:
+        if commit:
+            current = git("show", f"{commit}:{ANSIBLE_RELEASE_FILE.relative_to(CHECKOUT_DIR)}", capture_output=True).stdout
+        else:
+            current = ANSIBLE_RELEASE_FILE.read_text()
+
+        if not (match := ANSIBLE_VERSION_PATTERN.search(current)):
+            raise RuntimeError("Failed to get the ansible-core version.")
+
+        version = match.group("version")
+        source = f" in '{ANSIBLE_RELEASE_FILE}'"
+
+    try:
+        parsed_version = Version(version)
+    except InvalidVersion:
+        raise ApplicationError(f"Invalid version{source}: {version}") from None
+
+    parsed_version = mode.apply(parsed_version)
+
+    return parsed_version
+
+
+def get_next_version(version: Version, /, final: bool = False, pre: str | None = None, mode: VersionMode = VersionMode.DEFAULT) -> Version:
+    """Return the next version after the specified version."""
+
+    # TODO: consider using development versions instead of post versions after a release is published
+
+    pre = pre or ""
+    micro = version.micro
+
+    if version.is_devrelease:
+        # The next version of a development release is the same version without the development component.
+        if final:
+            pre = ""
+        elif not pre and version.pre is not None:
+            pre = f"{version.pre[0]}{version.pre[1]}"
+    elif version.is_postrelease:
+        # The next version of a post release is the next pre-release *or* micro release component.
+        if final:
+            pre = ""
+        elif not pre and version.pre is not None:
+            pre = f"{version.pre[0]}{version.pre[1] + 1}"
+
+        if version.pre is None:
+            micro = version.micro + 1
+    else:
+        raise ApplicationError(f"Version {version} is not a development or post release version.")
+
+    version = f"{version.major}.{version.minor}.{micro}{pre}"
+
+    return get_ansible_version(version, mode=mode)
+
+
+def check_ansible_version(current_version: Version, requested_version: Version) -> None:
+    """Verify the requested version is valid for the current version."""
+    if requested_version.release[:2] != current_version.release[:2]:
+        raise ApplicationError(f"Version {requested_version} does not match the major and minor portion of the current version: {current_version}")
+
+    if requested_version < current_version:
+        raise ApplicationError(f"Version {requested_version} is older than the current version: {current_version}")
+
+    # TODO: consider additional checks to avoid mistakes when incrementing the release version
+
+
+def set_ansible_version(current_version: Version, requested_version: Version) -> None:
+    """Set the current ansible-core version."""
+    check_ansible_version(current_version, requested_version)
+
+    if requested_version == current_version:
+        return
+
+    display.show(f"Updating version {current_version} to {requested_version} ...")
+
+    current = ANSIBLE_RELEASE_FILE.read_text()
+    updated = ANSIBLE_VERSION_PATTERN.sub(ANSIBLE_VERSION_FORMAT.format(version=requested_version), current)
+
+    if current == updated:
+        raise RuntimeError("Failed to set the ansible-core version.")
+
+    ANSIBLE_RELEASE_FILE.write_text(updated)
+
+
+def test_built_artifact(path: pathlib.Path) -> None:
+    """Test the specified built artifact by installing it in a venv and running some basic commands."""
+    with tempfile.TemporaryDirectory() as temp_dir_name:
+        temp_dir = pathlib.Path(temp_dir_name)
+
+        venv_dir = temp_dir / "venv"
+        venv_bin_dir = venv_dir / "bin"
+
+        venv.create(venv_dir, with_pip=True)
+
+        env = os.environ.copy()
+        env.pop("PYTHONPATH", None)  # avoid interference from ansible being injected into the environment
+        env.update(
+            PATH=os.pathsep.join((str(venv_bin_dir), env["PATH"])),
+        )
+
+        run("pip", "install", path, env=env | PIP_ENV, cwd=CHECKOUT_DIR)
+
+        run("ansible", "--version", env=env, cwd=CHECKOUT_DIR)
+        run("ansible-test", "--version", env=env, cwd=CHECKOUT_DIR)
+
+
+def get_sdist_path(version: Version, dist_dir: pathlib.Path = DIST_DIR) -> pathlib.Path:
+    """Return the path to the sdist file."""
+    return dist_dir / f"ansible-core-{version}.tar.gz"
+
+
+def get_wheel_path(version: Version, dist_dir: pathlib.Path = DIST_DIR) -> pathlib.Path:
+    """Return the path to the wheel file."""
+    return dist_dir / f"ansible_core-{version}-py3-none-any.whl"
+
+
+def calculate_digest(path: pathlib.Path) -> str:
+    """Return the digest for the specified file."""
+    # TODO: use hashlib.file_digest once Python 3.11 is the minimum supported version
+    return hashlib.new(DIGEST_ALGORITHM, path.read_bytes()).hexdigest()
+
+
+@functools.cache
+def get_release_artifact_details(repository: str, version: Version, validate: bool) -> list[ReleaseArtifact]:
+    """Return information about the release artifacts hosted on PyPI."""
+    endpoint = PYPI_ENDPOINTS[repository]
+    url = f"{endpoint}/ansible-core/{version}/json"
+
+    opener = urllib.request.build_opener()
+    response: http.client.HTTPResponse
+
+    try:
+        with opener.open(url) as response:
+            data = json.load(response)
+    except urllib.error.HTTPError as ex:
+        if ex.status == http.HTTPStatus.NOT_FOUND:
+            raise ApplicationError(f"Version {version} not found on PyPI.") from None
+
+        raise RuntimeError(f"Failed to get {version} from PyPI: {ex}") from ex
+
+    artifacts = [describe_release_artifact(version, item, validate) for item in data["urls"]]
+
+    return artifacts
+
+
+def describe_release_artifact(version: Version, item: dict[str, t.Any], validate: bool) -> ReleaseArtifact:
+    """Return release artifact details extracted from the given PyPI data."""
+    package_type = item["packagetype"]
+
+    # The artifact URL is documented as stable, so is safe to put in release notes and announcements.
+    # See: https://github.com/pypi/warehouse/blame/c95be4a1055f4b36a8852715eb80318c81fc00ca/docs/api-reference/integration-guide.rst#L86-L90
+    url = item["url"]
+
+    pypi_size = item["size"]
+    pypi_digest = item["digests"][DIGEST_ALGORITHM]
+
+    if package_type == "bdist_wheel":
+        local_artifact_file = get_wheel_path(version)
+        package_label = "Built Distribution"
+    elif package_type == "sdist":
+        local_artifact_file = get_sdist_path(version)
+        package_label = "Source Distribution"
+    else:
+        raise NotImplementedError(f"Package type '{package_type}' is not supported.")
+
+    if validate:
+        try:
+            local_size = local_artifact_file.stat().st_size
+            local_digest = calculate_digest(local_artifact_file)
+        except FileNotFoundError:
+            raise ApplicationError(f"Missing local artifact: {local_artifact_file.relative_to(CHECKOUT_DIR)}") from None
+
+        if local_size != pypi_size:
+            raise ApplicationError(f"The {version} local {package_type} size {local_size} does not match the PyPI size {pypi_size}.")
+
+        if local_digest != pypi_digest:
+            raise ApplicationError(f"The {version} local {package_type} digest '{local_digest}' does not match the PyPI digest '{pypi_digest}'.")
+
+    return ReleaseArtifact(
+        package_type=package_type,
+        package_label=package_label,
+        url=url,
+        size=pypi_size,
+        digest=pypi_digest,
+        digest_algorithm=DIGEST_ALGORITHM.upper(),
+    )
+
+
+def get_next_release_date(start: datetime.date, step: int, after: datetime.date) -> datetime.date:
+    """Return the next release date."""
+    if start > after:
+        raise ValueError(f"{start=} is greater than {after=}")
+
+    current_delta = after - start
+    release_delta = datetime.timedelta(days=(math.floor(current_delta.days / step) + 1) * step)
+
+    release = start + release_delta
+
+    return release
+
+
+def create_template_environment() -> jinja2.Environment:
+    """Create and return a jinja2 environment."""
+    env = jinja2.Environment()
+    env.filters.update(
+        basename=os.path.basename,
+    )
+
+    return env
+
+
+def create_github_release_notes(upstream: Remote, repository: str, version: Version, validate: bool) -> str:
+    """Create and return GitHub release notes."""
+    env = create_template_environment()
+    template = env.from_string(GITHUB_RELEASE_NOTES_TEMPLATE)
+
+    variables = dict(
+        version=version,
+        releases=get_release_artifact_details(repository, version, validate),
+        changelog=f"https://github.com/{upstream.user}/{upstream.repo}/blob/v{ version }/changelogs/CHANGELOG-v{ version.major }.{ version.minor }.rst",
+    )
+
+    release_notes = template.render(**variables).strip()
+
+    return release_notes
+
+
+def create_release_announcement(upstream: Remote, repository: str, version: Version, validate: bool) -> ReleaseAnnouncement:
+    """Create and return a release announcement message."""
+    env = create_template_environment()
+    subject_template = env.from_string(RELEASE_ANNOUNCEMENT_SUBJECT_TEMPLATE)
+    body_template = env.from_string(RELEASE_ANNOUNCEMENT_BODY_TEMPLATE)
+
+    today = datetime.datetime.now(tz=datetime.timezone.utc).date()
+
+    variables = dict(
+        version=version,
+        info=dict(
+            name="ansible-core",
+            short=f"{version.major}.{version.minor}",
+            releases=get_release_artifact_details(repository, version, validate),
+        ),
+        next_rc=get_next_release_date(datetime.date(2021, 8, 9), 28, today),
+        next_ga=get_next_release_date(datetime.date(2021, 8, 16), 28, today),
+        rc=version.pre and version.pre[0] == "rc",
+        beta=version.pre and version.pre[0] == "b",
+        alpha=version.pre and version.pre[0] == "a",
+        major=version.micro == 0,
+        upstream=upstream,
+    )
+
+    if version.pre and version.pre[0] in ("a", "b"):
+        display.warning("The release announcement template does not populate the date for the next release.")
+
+    subject = subject_template.render(**variables).strip()
+    body = body_template.render(**variables).strip()
+
+    message = ReleaseAnnouncement(
+        subject=subject,
+        body=body,
+    )
+
+    return message
+
+
+# endregion
+# region Templates
+
+
+FINAL_RELEASE_ANNOUNCEMENT_RECIPIENTS = [
+    "ansible-announce@googlegroups.com",
+    "ansible-project@googlegroups.com",
+    "ansible-devel@googlegroups.com",
+]
+
+PRE_RELEASE_ANNOUNCEMENT_RECIPIENTS = [
+    "ansible-devel@googlegroups.com",
+]
+
+GITHUB_RELEASE_NOTES_TEMPLATE = """
+# Changelog
+
+See the [full changelog]({{ changelog }}) for the changes included in this release.
+
+# Release Artifacts
+
+{%- for release in releases %}
+* {{ release.package_label }}: [{{ release.url|basename }}]({{ release.url }}) - {{ release.size }} bytes
+  * {{ release.digest }} ({{ release.digest_algorithm }})
+{%- endfor %}
+"""
+
+# These release templates were adapted from sivel's release announcement script.
+# See: https://gist.github.com/sivel/937bc2862a9677d8db875f3b10744d8c
+
+RELEASE_ANNOUNCEMENT_SUBJECT_TEMPLATE = """
+New release{% if rc %} candidate{% elif beta %} beta{% elif alpha %} alpha{% endif %}: {{ info.name }} {{ version }}
+"""
+
+# NOTE: Gmail will automatically wrap the plain text version when sending.
+#       There's no need to perform wrapping ahead of time for normal sentences.
+#       However, lines with special formatting should be kept short to avoid unwanted wrapping.
+RELEASE_ANNOUNCEMENT_BODY_TEMPLATE = """
+Hi all- we're happy to announce the{{ " " }}
+{%- if rc -%}
+following release candidate
+{%- elif beta -%}
+beta release of
+{%- elif alpha -%}
+alpha release of
+{%- else -%}
+general release of
+{%- endif -%}:
+
+{{ info.name }} {{ version }}
+
+
+How to get it
+-------------
+
+$ python3 -m pip install --user {{ info.name }}=={{ version }}
+
+The release artifacts can be found here:
+{% for release in info.releases %}
+# {{ release.package_label }}: {{ release.size }} bytes
+# {{ release.digest_algorithm }}: {{ release.digest }}
+{{ release.url }}
+{%- endfor %}
+
+
+What's new
+----------
+
+{% if major %}
+This release is a major release.
+{%- else -%}
+This release is a maintenance release containing numerous bugfixes.
+{% endif %}
+The full changelog can be found here:
+
+https://github.com/{{ upstream.user }}/{{ upstream.repo }}/blob/v{{ version }}/changelogs/CHANGELOG-v{{ info.short }}.rst
+
+
+Schedule for future releases
+----------------------------
+{% if rc %}
+The release candidate will become a general availability release on {{ next_ga.strftime('%-d %B %Y') }}.
+{% elif beta %}
+Subject to the need for additional beta releases, the first release candidate is scheduled for X.
+{% elif alpha %}
+Subject to the need for additional alpha releases, the first release beta is scheduled for X.
+{% else %}
+The next release candidate is planned to be released on {{ next_rc.strftime('%-d %B %Y') }}. The next general availability release will be one week after.
+{% endif %}
+
+Porting help
+------------
+
+If you discover any errors or if any of your working playbooks break when you upgrade, please use the following link to report the regression:
+
+https://github.com/{{ upstream.user }}/{{ upstream.repo }}/issues/new/choose
+
+In your issue, be sure to mention the version that works and the one that doesn't.
+
+Thanks!
+"""
+
+# endregion
+# region Commands
+
+command = CommandFramework(
+    repository=dict(metavar="REPO", choices=tuple(PYPI_ENDPOINTS), default="pypi", help="PyPI repository to use: %(choices)s [%(default)s]"),
+    version=dict(exclusive="version", help="version to set"),
+    pre=dict(exclusive="version", help="increment version to the specified pre-release (aN, bN, rcN)"),
+    final=dict(exclusive="version", action="store_true", help="increment version to the next final release"),
+    commit=dict(help="commit to tag"),
+    mailto=dict(name="--no-mailto", action="store_false", help="write announcement to console instead of using a mailto: link"),
+    validate=dict(name="--no-validate", action="store_false", help="disable validation of PyPI artifacts against local ones"),
+    prompt=dict(name="--no-prompt", action="store_false", help="disable interactive prompt before publishing with twine"),
+    allow_tag=dict(action="store_true", help="allow an existing release tag (for testing)"),
+    allow_stale=dict(action="store_true", help="allow a stale checkout (for testing)"),
+    allow_dirty=dict(action="store_true", help="allow untracked files and files with changes (for testing)"),
+)
+
+
+@command
+def instructions() -> None:
+    """Show instructions for the release process."""
+    message = """
+Releases must be performed using an up-to-date checkout of a fork of the Ansible repository.
+
+1. Make sure your checkout is up-to-date.
+2. Run the `prepare` command [1], then:
+   a. Submit the PR opened in the browser.
+   b. Wait for CI to pass.
+   c. Merge the PR.
+3. Update your checkout to include the commit from the PR which was just merged.
+4. Run the `complete` command [2], then:
+   a. Submit the GitHub release opened in the browser.
+   b. Submit the PR opened in the browser.
+   c. Send the release announcement opened in your browser.
+   d. Wait for CI to pass.
+   e. Merge the PR.
+
+[1] Use the `--final`, `--pre` or `--version` option for control over the version.
+[2] During the `publish` step, `twine` may prompt for credentials.
+"""
+
+    display.show(message.strip())
+
+
+@command
+def show_version(final: bool = False, pre: str | None = None) -> None:
+    """Show the current and next ansible-core version."""
+    current_version = get_ansible_version(mode=VersionMode.ALLOW_DEV_POST)
+    display.show(f"Current version: {current_version}")
+
+    try:
+        next_version = get_next_version(current_version, final=final, pre=pre)
+    except ApplicationError as ex:
+        display.show(f"   Next version: Unknown - {ex}")
+    else:
+        display.show(f"   Next version: {next_version}")
+
+        check_ansible_version(current_version, next_version)
+
+
+@command
+def check_state(allow_stale: bool = False) -> None:
+    """Verify the git repository is in a usable state for creating a pull request."""
+    get_git_state(get_ansible_version(), allow_stale)
+
+
+# noinspection PyUnusedLocal
+@command
+def prepare(final: bool = False, pre: str | None = None, version: str | None = None) -> None:
+    """Prepare a release."""
+    command.run(
+        update_version,
+        check_state,
+        generate_summary,
+        generate_changelog,
+        create_release_pr,
+    )
+
+
+@command
+def update_version(final: bool = False, pre: str | None = None, version: str | None = None) -> None:
+    """Update the version embedded in the source code."""
+    current_version = get_ansible_version(mode=VersionMode.REQUIRE_DEV_POST)
+
+    if version:
+        requested_version = get_ansible_version(version)
+    else:
+        requested_version = get_next_version(current_version, final=final, pre=pre)
+
+    set_ansible_version(current_version, requested_version)
+
+
+@command
+def generate_summary() -> None:
+    """Generate a summary changelog fragment for this release."""
+    version = get_ansible_version()
+    release_date = datetime.datetime.now(datetime.timezone.utc).strftime("%Y-%m-%d")
+    summary_path = CHANGELOGS_FRAGMENTS_DIR / f"{version}_summary.yaml"
+    major_minor = f"{version.major}.{version.minor}"
+
+    content = f"""
+release_summary: |
+   | Release Date: {release_date}
+   | `Porting Guide <https://docs.ansible.com/ansible-core/{major_minor}/porting_guides/porting_guide_core_{major_minor}.html>`__
+"""
+
+    summary_path.write_text(content.lstrip())
+
+
+@command
+def generate_changelog() -> None:
+    """Generate the changelog and validate the results."""
+    env = ensure_venv()
+    env.update(
+        PATH=os.pathsep.join((str(ANSIBLE_BIN_DIR), env["PATH"])),
+        PYTHONPATH=ANSIBLE_LIB_DIR,
+    )
+
+    # TODO: consider switching back to the original changelog generator instead of using antsibull-changelog
+
+    run("antsibull-changelog", "release", "-vv", "--use-ansible-doc", env=env, cwd=CHECKOUT_DIR)
+    run("antsibull-changelog", "generate", "-vv", "--use-ansible-doc", env=env, cwd=CHECKOUT_DIR)
+
+    run("ansible-test", "sanity", CHANGELOGS_DIR, ANSIBLE_RELEASE_FILE, env=env, cwd=CHECKOUT_DIR)
+
+
+@command
+def create_release_pr(allow_stale: bool = False) -> None:
+    """Create a branch and open a browser tab for creating a release pull request."""
+    version = get_ansible_version()
+
+    pr = prepare_pull_request(
+        version=version,
+        branch=f"release-{version}-{secrets.token_hex(4)}",
+        title=f"New release v{version}",
+        add=(
+            CHANGELOGS_DIR,
+            ANSIBLE_RELEASE_FILE,
+        ),
+        allow_stale=allow_stale,
+    )
+
+    create_pull_request(pr)
+
+
+# noinspection PyUnusedLocal
+@command
+def complete(repository: str, mailto: bool = True, allow_dirty: bool = False) -> None:
+    """Complete a release after the prepared changes have been merged."""
+    command.run(
+        check_state,
+        build,
+        test,
+        publish,
+        tag_release,
+        post_version,
+        create_post_pr,
+        release_announcement,
+    )
+
+
+@command
+def build(allow_dirty: bool = False) -> None:
+    """Build the sdist and wheel."""
+    version = get_ansible_version(mode=VersionMode.ALLOW_DEV_POST)
+    env = ensure_venv()
+
+    dirty = git("status", "--porcelain", "--untracked-files=all", capture_output=True).stdout.strip().splitlines()
+
+    if dirty:
+        with suppress_when(allow_dirty):
+            raise ApplicationError(f"There are {len(dirty)} files which are untracked and/or have changes, which will be omitted from the build.")
+
+    sdist_file = get_sdist_path(version)
+    wheel_file = get_wheel_path(version)
+
+    with tempfile.TemporaryDirectory(dir=DIST_DIR, prefix=f"build-{version}-", suffix=".tmp") as temp_dir_name:
+        temp_dir = pathlib.Path(temp_dir_name)
+        dist_dir = temp_dir / "dist"
+
+        git("worktree", "add", "-d", temp_dir)
+
+        try:
+            run("python", "-m", "build", "--config-setting=--build-manpages", env=env, cwd=temp_dir)
+
+            get_sdist_path(version, dist_dir).rename(sdist_file)
+            get_wheel_path(version, dist_dir).rename(wheel_file)
+        finally:
+            git("worktree", "remove", temp_dir)
+
+
+@command
+def test() -> None:
+    """Test the sdist and wheel."""
+    command.run(
+        test_sdist,
+        test_wheel,
+    )
+
+
+@command
+def test_sdist() -> None:
+    """Test the sdist."""
+    version = get_ansible_version(mode=VersionMode.ALLOW_DEV_POST)
+    sdist_file = get_sdist_path(version)
+
+    with tempfile.TemporaryDirectory() as temp_dir_name:
+        temp_dir = pathlib.Path(temp_dir_name)
+
+        with contextlib.ExitStack() as stack:
+            try:
+                sdist = stack.enter_context(tarfile.open(sdist_file))
+            except FileNotFoundError:
+                raise ApplicationError(f"Missing sdist: {sdist_file.relative_to(CHECKOUT_DIR)}") from None
+
+            sdist.extractall(temp_dir)
+
+        man1_dir = temp_dir / sdist_file.with_suffix("").with_suffix("").name / "docs" / "man" / "man1"
+        man1_pages = sorted(man1_dir.glob("*.1"))
+
+        if not man1_pages:
+            raise ApplicationError(f"No man pages found in the sdist at: {man1_dir.relative_to(temp_dir)}")
+
+        pyc_glob = "*.pyc*"
+        pyc_files = sorted(path.relative_to(temp_dir) for path in temp_dir.rglob(pyc_glob))
+
+        if pyc_files:
+            raise ApplicationError(f"Found {len(pyc_files)} '{pyc_glob}' file(s): {', '.join(map(str, pyc_files))}")
+
+        display.show(f"Found man1 pages: {', '.join([path.name for path in man1_pages])}")
+
+    test_built_artifact(sdist_file)
+
+
+@command
+def test_wheel() -> None:
+    """Test the wheel."""
+    version = get_ansible_version(mode=VersionMode.ALLOW_DEV_POST)
+    wheel_file = get_wheel_path(version)
+
+    with tempfile.TemporaryDirectory() as temp_dir_name:
+        temp_dir = pathlib.Path(temp_dir_name)
+
+        with contextlib.ExitStack() as stack:
+            try:
+                wheel = stack.enter_context(zipfile.ZipFile(wheel_file))
+            except FileNotFoundError:
+                raise ApplicationError(f"Missing wheel for version {version}: {wheel_file}") from None
+
+            wheel.extractall(temp_dir)
+
+    test_built_artifact(wheel_file)
+
+
+@command
+def publish(repository: str, prompt: bool = True) -> None:
+    """Publish to PyPI."""
+    version = get_ansible_version()
+    sdist_file = get_sdist_path(version)
+    wheel_file = get_wheel_path(version)
+    env = ensure_venv()
+
+    if prompt:
+        try:
+            while input(f"Do you want to publish {version} to the '{repository}' repository?\nEnter the repository name to confirm: ") != repository:
+                pass
+        except KeyboardInterrupt:
+            display.show("")
+            raise ApplicationError("Publishing was aborted by the user.") from None
+
+    run("twine", "upload", "-r", repository, sdist_file, wheel_file, env=env, cwd=CHECKOUT_DIR)
+
+
+@command
+def tag_release(repository: str, commit: str | None = None, validate: bool = True, allow_tag: bool = False) -> None:
+    """Create a GitHub release using the current or specified commit."""
+    upstream = get_remotes().upstream
+
+    if commit:
+        git("fetch", upstream.name)  # fetch upstream to make sure the commit can be found
+
+    commit = get_commit(commit)
+    version = get_ansible_version(commit=commit)
+    tag = f"v{version}"
+
+    if upstream_tag := git("ls-remote", "--tags", upstream.name, tag, capture_output=True).stdout.strip():
+        with suppress_when(allow_tag):
+            raise ApplicationError(f"Version {version} has already been tagged: {upstream_tag}")
+
+    upstream_branch = get_upstream_branch(version)
+    upstream_refs = git("branch", "-r", "--format=%(refname)", "--contains", commit, capture_output=True).stdout.strip().splitlines()
+    upstream_ref = f"refs/remotes/{upstream.name}/{upstream_branch}"
+
+    if upstream_ref not in upstream_refs:
+        raise ApplicationError(f"Commit {upstream_ref} not found. Found {len(upstream_refs)} upstream ref(s): {', '.join(upstream_refs)}")
+
+    body = create_github_release_notes(upstream, repository, version, validate)
+
+    release = GitHubRelease(
+        user=upstream.user,
+        repo=upstream.repo,
+        target=commit,
+        tag=tag,
+        title=tag,
+        body=body,
+        pre_release=version.pre is not None,
+    )
+
+    create_github_release(release)
+
+
+@command
+def post_version() -> None:
+    """Set the post release version."""
+    current_version = get_ansible_version()
+    requested_version = get_ansible_version(f"{current_version}.post0", mode=VersionMode.REQUIRE_POST)
+
+    set_ansible_version(current_version, requested_version)
+
+
+@command
+def create_post_pr(allow_stale: bool = False) -> None:
+    """Create a branch and open a browser tab for creating a post release pull request."""
+    version = get_ansible_version(mode=VersionMode.REQUIRE_POST)
+
+    pr = prepare_pull_request(
+        version=version,
+        branch=f"release-{version}-{secrets.token_hex(4)}",
+        title=f"Update Ansible release version to v{version}.",
+        add=(ANSIBLE_RELEASE_FILE,),
+        allow_stale=allow_stale,
+    )
+
+    create_pull_request(pr)
+
+
+@command
+def release_announcement(repository: str, version: str | None = None, mailto: bool = True, validate: bool = True) -> None:
+    """Generate a release announcement for the current or specified version."""
+    parsed_version = get_ansible_version(version, mode=VersionMode.STRIP_POST)
+    upstream = get_remotes().upstream
+    message = create_release_announcement(upstream, repository, parsed_version, validate)
+    recipient_list = PRE_RELEASE_ANNOUNCEMENT_RECIPIENTS if parsed_version.is_prerelease else FINAL_RELEASE_ANNOUNCEMENT_RECIPIENTS
+    recipients = ", ".join(recipient_list)
+
+    if mailto:
+        to = urllib.parse.quote(recipients)
+
+        params = dict(
+            subject=message.subject,
+            body=message.body,
+        )
+
+        query_string = urllib.parse.urlencode(params)
+        url = f"mailto:{to}?{query_string}"
+
+        display.show("Opening email client through default web browser ...")
+        webbrowser.open(url)
+    else:
+        print(f"TO: {recipients}")
+        print(f"SUBJECT: {message.subject}")
+        print()
+        print(message.body)
+
+
+# endregion
+
+
+if __name__ == "__main__":
+    command.main()