# 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 logging
import os

import click

from platformio import fs
from platformio.package.manager.library import LibraryPackageManager
from platformio.package.manager.platform import PlatformPackageManager
from platformio.package.manager.tool import ToolPackageManager
from platformio.package.meta import PackageSpec
from platformio.project.config import ProjectConfig
from platformio.project.savedeps import pkg_to_save_spec, save_project_dependencies


@click.command(
    "update", short_help="Update the project dependencies or custom packages"
)
@click.option(
    "-d",
    "--project-dir",
    default=os.getcwd,
    type=click.Path(exists=True, file_okay=False, dir_okay=True),
)
@click.option("-e", "--environment", "environments", multiple=True)
@click.option("-p", "--platform", "platforms", metavar="SPECIFICATION", multiple=True)
@click.option("-t", "--tool", "tools", metavar="SPECIFICATION", multiple=True)
@click.option("-l", "--library", "libraries", metavar="SPECIFICATION", multiple=True)
@click.option(
    "--no-save",
    is_flag=True,
    help="Prevent saving specified packages to `platformio.ini`",
)
@click.option("--skip-dependencies", is_flag=True, help="Skip package dependencies")
@click.option("-g", "--global", is_flag=True, help="Update global packages")
@click.option(
    "--storage-dir",
    default=None,
    type=click.Path(exists=True, file_okay=False, dir_okay=True),
    help="Custom Package Manager storage for global packages",
)
@click.option("-s", "--silent", is_flag=True, help="Suppress progress reporting")
def package_update_cmd(**options):
    if options.get("global"):
        update_global_dependencies(options)
    else:
        update_project_dependencies(options)


def update_global_dependencies(options):
    pm = PlatformPackageManager(options.get("storage_dir"))
    tm = ToolPackageManager(options.get("storage_dir"))
    lm = LibraryPackageManager(options.get("storage_dir"))
    for obj in (pm, tm, lm):
        obj.set_log_level(logging.WARN if options.get("silent") else logging.DEBUG)
    for spec in options.get("platforms"):
        pm.update(
            from_spec=spec,
            to_spec=spec,
            skip_dependencies=options.get("skip_dependencies"),
        )
    for spec in options.get("tools"):
        tm.update(
            from_spec=spec,
            to_spec=spec,
            skip_dependencies=options.get("skip_dependencies"),
        )
    for spec in options.get("libraries", []):
        lm.update(
            from_spec=spec,
            to_spec=spec,
            skip_dependencies=options.get("skip_dependencies"),
        )


def update_project_dependencies(options):
    environments = options["environments"]
    with fs.cd(options["project_dir"]):
        config = ProjectConfig.get_instance()
        config.validate(environments)
        for env in config.envs():
            if environments and env not in environments:
                continue
            if not options["silent"]:
                click.echo("Resolving %s dependencies..." % click.style(env, fg="cyan"))
            already_up_to_date = not update_project_env_dependencies(env, options)
            if not options["silent"] and already_up_to_date:
                click.secho("Already up-to-date.", fg="green")


def update_project_env_dependencies(project_env, options=None):
    options = options or {}
    updated_conds = []
    # custom platforms
    if options.get("platforms"):
        updated_conds.append(_update_project_env_custom_platforms(project_env, options))
    # custom tools
    if options.get("tools"):
        updated_conds.append(_update_project_env_custom_tools(project_env, options))
    # custom ibraries
    if options.get("libraries"):
        updated_conds.append(_update_project_env_custom_libraries(project_env, options))
    # declared dependencies
    if not updated_conds:
        updated_conds = [
            _update_project_env_platform(project_env, options),
            _update_project_env_libraries(project_env, options),
        ]
    return any(updated_conds)


def _update_project_env_platform(project_env, options):
    config = ProjectConfig.get_instance()
    pm = PlatformPackageManager()
    if options.get("silent"):
        pm.set_log_level(logging.WARN)
    spec = config.get(f"env:{project_env}", "platform")
    if not spec:
        return None
    cur_pkg = pm.get_package(spec)
    if not cur_pkg:
        return None
    new_pkg = PlatformPackageManager().update(
        cur_pkg,
        to_spec=spec,
        project_env=project_env,
        skip_dependencies=options.get("skip_dependencies"),
    )
    return cur_pkg != new_pkg


def _update_project_env_custom_platforms(project_env, options):
    already_up_to_date = True
    pm = PlatformPackageManager()
    if not options.get("silent"):
        pm.set_log_level(logging.DEBUG)
    for spec in options.get("platforms"):
        cur_pkg = pm.get_package(spec)
        new_pkg = pm.update(
            cur_pkg,
            to_spec=spec,
            project_env=project_env,
            skip_dependencies=options.get("skip_dependencies"),
        )
        if cur_pkg != new_pkg:
            already_up_to_date = False
    return not already_up_to_date


def _update_project_env_custom_tools(project_env, options):
    already_up_to_date = True
    tm = ToolPackageManager()
    if not options.get("silent"):
        tm.set_log_level(logging.DEBUG)

    specs_to_save = []
    for tool in options.get("tools"):
        spec = PackageSpec(tool)
        cur_pkg = tm.get_package(spec)
        new_pkg = tm.update(
            cur_pkg,
            to_spec=spec,
            skip_dependencies=options.get("skip_dependencies"),
        )
        if cur_pkg != new_pkg:
            already_up_to_date = False
        specs_to_save.append(pkg_to_save_spec(new_pkg, spec))

    if not options.get("no_save") and specs_to_save:
        save_project_dependencies(
            os.getcwd(),
            specs_to_save,
            scope="platform_packages",
            action="add",
            environments=[project_env],
        )

    return not already_up_to_date


def _update_project_env_libraries(project_env, options):
    already_up_to_date = True
    config = ProjectConfig.get_instance()
    lm = LibraryPackageManager(
        os.path.join(config.get("platformio", "libdeps_dir"), project_env)
    )
    if options.get("silent"):
        lm.set_log_level(logging.WARN)
    for library in config.get(f"env:{project_env}", "lib_deps"):
        spec = PackageSpec(library)
        # skip built-in dependencies
        if not spec.external and not spec.owner:
            continue
        cur_pkg = lm.get_package(spec)
        if cur_pkg:
            new_pkg = lm.update(
                cur_pkg,
                to_spec=spec,
                skip_dependencies=options.get("skip_dependencies"),
            )
            if cur_pkg != new_pkg:
                already_up_to_date = False
    return not already_up_to_date


def _update_project_env_custom_libraries(project_env, options):
    already_up_to_date = True
    config = ProjectConfig.get_instance()
    lm = LibraryPackageManager(
        os.path.join(config.get("platformio", "libdeps_dir"), project_env)
    )
    if not options.get("silent"):
        lm.set_log_level(logging.DEBUG)

    specs_to_save = []
    for library in options.get("libraries") or []:
        spec = PackageSpec(library)
        cur_pkg = lm.get_package(spec)
        new_pkg = lm.update(
            cur_pkg,
            to_spec=spec,
            skip_dependencies=options.get("skip_dependencies"),
        )
        if cur_pkg != new_pkg:
            already_up_to_date = False
        specs_to_save.append(pkg_to_save_spec(new_pkg, spec))

    if not options.get("no_save") and specs_to_save:
        save_project_dependencies(
            os.getcwd(),
            specs_to_save,
            scope="lib_deps",
            action="add",
            environments=[project_env],
        )

    return not already_up_to_date
