# 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
from pathlib import Path

import click

from platformio import fs
from platformio.package.exception import UnknownPackageError
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
from platformio.test.result import TestSuite
from platformio.test.runners.factory import TestRunnerFactory


@click.command(
    "install", short_help="Install 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, resolve_path=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="Install package globally")
@click.option(
    "--storage-dir",
    default=None,
    type=click.Path(exists=True, file_okay=False, dir_okay=True, resolve_path=True),
    help="Custom Package Manager storage for global packages",
)
@click.option("-f", "--force", is_flag=True, help="Reinstall package if it exists")
@click.option("-s", "--silent", is_flag=True, help="Suppress progress reporting")
def package_install_cmd(**options):
    if options.get("global"):
        install_global_dependencies(options)
    else:
        install_project_dependencies(options)


def install_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.install(
            spec,
            skip_dependencies=options.get("skip_dependencies"),
            force=options.get("force"),
        )
    for spec in options.get("tools"):
        tm.install(
            spec,
            skip_dependencies=options.get("skip_dependencies"),
            force=options.get("force"),
        )
    for spec in options.get("libraries", []):
        lm.install(
            spec,
            skip_dependencies=options.get("skip_dependencies"),
            force=options.get("force"),
        )


def install_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 environment packages..." % click.style(env, fg="cyan")
                )
            already_up_to_date = not install_project_env_dependencies(env, options)
            if not options["silent"] and already_up_to_date:
                click.secho("Already up-to-date.", fg="green")


def install_project_env_dependencies(project_env, options=None):
    """Used in `pio run` -> Processor"""
    options = options or {}
    installed_conds = []
    # custom platforms
    if options.get("platforms"):
        installed_conds.append(
            _install_project_env_custom_platforms(project_env, options)
        )
    # custom tools
    if options.get("tools"):
        installed_conds.append(_install_project_env_custom_tools(project_env, options))
    # custom ibraries
    if options.get("libraries"):
        installed_conds.append(
            _install_project_env_custom_libraries(project_env, options)
        )
    # declared dependencies
    if not installed_conds:
        installed_conds = [
            _install_project_env_platform(project_env, options),
            _install_project_env_libraries(project_env, options),
        ]
    return any(installed_conds)


def _install_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 False
    already_up_to_date = not options.get("force")
    if not pm.get_package(spec):
        already_up_to_date = False
    PlatformPackageManager().install(
        spec,
        project_env=project_env,
        project_targets=options.get("project_targets"),
        skip_dependencies=options.get("skip_dependencies"),
        force=options.get("force"),
    )
    return not already_up_to_date


def _install_project_env_custom_platforms(project_env, options):
    already_up_to_date = not options.get("force")
    pm = PlatformPackageManager()
    if not options.get("silent"):
        pm.set_log_level(logging.DEBUG)
    for spec in options.get("platforms"):
        if not pm.get_package(spec):
            already_up_to_date = False
        pm.install(
            spec,
            project_env=project_env,
            project_targets=options.get("project_targets"),
            skip_dependencies=options.get("skip_dependencies"),
            force=options.get("force"),
        )
    return not already_up_to_date


def _install_project_env_custom_tools(project_env, options):
    already_up_to_date = not options.get("force")
    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)
        if not tm.get_package(spec):
            already_up_to_date = False
        pkg = tm.install(
            spec,
            skip_dependencies=options.get("skip_dependencies"),
            force=options.get("force"),
        )
        specs_to_save.append(pkg_to_save_spec(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 _install_project_env_libraries(project_env, options):
    _uninstall_project_unused_libdeps(project_env, options)
    already_up_to_date = not options.get("force")
    config = ProjectConfig.get_instance()
    env_lm = LibraryPackageManager(
        os.path.join(config.get("platformio", "libdeps_dir"), project_env)
    )
    private_lm = LibraryPackageManager(
        os.path.join(config.get("platformio", "lib_dir"))
    )
    if options.get("silent"):
        env_lm.set_log_level(logging.WARN)
        private_lm.set_log_level(logging.WARN)

    lib_deps = config.get(f"env:{project_env}", "lib_deps")
    if "__test" in options.get("project_targets", []):
        test_runner = TestRunnerFactory.new(TestSuite(project_env, "*"), config)
        lib_deps.extend(test_runner.EXTRA_LIB_DEPS or [])

    for library in lib_deps:
        spec = PackageSpec(library)
        # skip built-in dependencies
        if not spec.external and not spec.owner:
            continue
        if not env_lm.get_package(spec):
            already_up_to_date = False
        env_lm.install(
            spec,
            skip_dependencies=options.get("skip_dependencies"),
            force=options.get("force"),
        )

    # install dependencies from the private libraries
    for pkg in private_lm.get_installed():
        _install_project_private_library_deps(pkg, private_lm, env_lm, options)

    return not already_up_to_date


def _uninstall_project_unused_libdeps(project_env, options):
    config = ProjectConfig.get_instance()
    lib_deps = set(config.get(f"env:{project_env}", "lib_deps"))
    if not lib_deps:
        return
    storage_dir = Path(config.get("platformio", "libdeps_dir"), project_env)
    integrity_dat = storage_dir / "integrity.dat"
    if integrity_dat.is_file():
        prev_lib_deps = set(
            integrity_dat.read_text(encoding="utf-8").strip().split("\n")
        )
        if lib_deps == prev_lib_deps:
            return
        lm = LibraryPackageManager(str(storage_dir))
        if options.get("silent"):
            lm.set_log_level(logging.WARN)
        else:
            click.secho("Removing unused dependencies...")
        for spec in set(prev_lib_deps) - set(lib_deps):
            try:
                lm.uninstall(spec)
            except UnknownPackageError:
                pass
    storage_dir.mkdir(parents=True, exist_ok=True)
    integrity_dat.write_text("\n".join(lib_deps), encoding="utf-8")


def _install_project_private_library_deps(private_pkg, private_lm, env_lm, options):
    for dependency in private_lm.get_pkg_dependencies(private_pkg) or []:
        spec = private_lm.dependency_to_spec(dependency)
        # skip built-in dependencies
        if not spec.external and not spec.owner:
            continue
        pkg = private_lm.get_package(spec)
        if not pkg and not env_lm.get_package(spec):
            pkg = env_lm.install(
                spec,
                skip_dependencies=True,
                force=options.get("force"),
            )
        if not pkg:
            continue
        _install_project_private_library_deps(pkg, private_lm, env_lm, options)


def _install_project_env_custom_libraries(project_env, options):
    already_up_to_date = not options.get("force")
    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)
        if not lm.get_package(spec):
            already_up_to_date = False
        pkg = lm.install(
            spec,
            skip_dependencies=options.get("skip_dependencies"),
            force=options.get("force"),
        )
        specs_to_save.append(pkg_to_save_spec(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