# Copyright (c) 2014-present PlatformIO <contact@platformio.org>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import json
import platform
import sys

import click
from tabulate import tabulate

from platformio import __version__, compat, fs, proc, util
from platformio.commands.system.completion import (
    ShellType,
    get_completion_install_path,
    install_completion_code,
    uninstall_completion_code,
)
from platformio.commands.system.prune import (
    prune_cached_data,
    prune_core_packages,
    prune_platform_packages,
)
from platformio.package.manager.library import LibraryPackageManager
from platformio.package.manager.platform import PlatformPackageManager
from platformio.package.manager.tool import ToolPackageManager
from platformio.project.config import ProjectConfig


@click.group("system", short_help="Miscellaneous system commands")
def cli():
    pass


@cli.command("info", short_help="Display system-wide information")
@click.option("--json-output", is_flag=True)
def system_info(json_output):
    project_config = ProjectConfig()
    data = {}
    data["core_version"] = {"title": "PlatformIO Core", "value": __version__}
    data["python_version"] = {
        "title": "Python",
        "value": "{0}.{1}.{2}-{3}.{4}".format(*list(sys.version_info)),
    }
    data["system"] = {"title": "System Type", "value": util.get_systype()}
    data["platform"] = {"title": "Platform", "value": platform.platform(terse=True)}
    data["filesystem_encoding"] = {
        "title": "File System Encoding",
        "value": compat.get_filesystem_encoding(),
    }
    data["locale_encoding"] = {
        "title": "Locale Encoding",
        "value": compat.get_locale_encoding(),
    }
    data["core_dir"] = {
        "title": "PlatformIO Core Directory",
        "value": project_config.get("platformio", "core_dir"),
    }
    data["platformio_exe"] = {
        "title": "PlatformIO Core Executable",
        "value": proc.where_is_program(
            "platformio.exe" if compat.IS_WINDOWS else "platformio"
        ),
    }
    data["python_exe"] = {
        "title": "Python Executable",
        "value": proc.get_pythonexe_path(),
    }
    data["global_lib_nums"] = {
        "title": "Global Libraries",
        "value": len(LibraryPackageManager().get_installed()),
    }
    data["dev_platform_nums"] = {
        "title": "Development Platforms",
        "value": len(PlatformPackageManager().get_installed()),
    }
    data["package_tool_nums"] = {
        "title": "Tools & Toolchains",
        "value": len(
            ToolPackageManager(
                project_config.get("platformio", "packages_dir")
            ).get_installed()
        ),
    }

    click.echo(
        json.dumps(data)
        if json_output
        else tabulate([(item["title"], item["value"]) for item in data.values()])
    )


@cli.command("prune", short_help="Remove unused data")
@click.option("--force", "-f", is_flag=True, help="Do not prompt for confirmation")
@click.option(
    "--dry-run", is_flag=True, help="Do not prune, only show data that will be removed"
)
@click.option("--cache", is_flag=True, help="Prune only cached data")
@click.option(
    "--core-packages", is_flag=True, help="Prune only unnecessary core packages"
)
@click.option(
    "--platform-packages",
    is_flag=True,
    help="Prune only unnecessary development platform packages",
)
def system_prune(force, dry_run, cache, core_packages, platform_packages):
    if dry_run:
        click.secho(
            "Dry run mode (do not prune, only show data that will be removed)",
            fg="yellow",
        )
        click.echo()

    reclaimed_cache = 0
    reclaimed_core_packages = 0
    reclaimed_platform_packages = 0
    prune_all = not any([cache, core_packages, platform_packages])

    if cache or prune_all:
        reclaimed_cache = prune_cached_data(force, dry_run)
        click.echo()

    if core_packages or prune_all:
        reclaimed_core_packages = prune_core_packages(force, dry_run)
        click.echo()

    if platform_packages or prune_all:
        reclaimed_platform_packages = prune_platform_packages(force, dry_run)
        click.echo()

    click.secho(
        "Total reclaimed space: %s"
        % fs.humanize_file_size(
            reclaimed_cache + reclaimed_core_packages + reclaimed_platform_packages
        ),
        fg="green",
    )


@cli.group("completion", short_help="Shell completion support")
def completion():
    pass


@completion.command("install", short_help="Install shell completion files/code")
@click.argument("shell", type=click.Choice([t.value for t in ShellType]))
@click.option(
    "--path",
    type=click.Path(file_okay=True, dir_okay=False, readable=True, resolve_path=True),
    help="Custom installation path of the code to be evaluated by the shell. "
    "The standard installation path is used by default.",
)
def completion_install(shell, path):
    shell = ShellType(shell)
    path = path or get_completion_install_path(shell)
    install_completion_code(shell, path)
    click.echo(
        "PlatformIO CLI completion has been installed for %s shell to %s \n"
        "Please restart a current shell session."
        % (click.style(shell.name, fg="cyan"), click.style(path, fg="blue"))
    )


@completion.command("uninstall", short_help="Uninstall shell completion files/code")
@click.argument("shell", type=click.Choice([t.value for t in ShellType]))
@click.option(
    "--path",
    type=click.Path(file_okay=True, dir_okay=False, readable=True, resolve_path=True),
    help="Custom installation path of the code to be evaluated by the shell. "
    "The standard installation path is used by default.",
)
def completion_uninstall(shell, path):
    shell = ShellType(shell)
    path = path or get_completion_install_path(shell)
    uninstall_completion_code(shell, path)
    click.echo(
        "PlatformIO CLI completion has been uninstalled for %s shell from %s \n"
        "Please restart a current shell session."
        % (click.style(shell.name, fg="cyan"), click.style(path, fg="blue"))
    )