# 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.

# pylint: disable=too-many-branches, too-many-locals

import time
from os.path import isdir, join

import click
import semantic_version
from tabulate import tabulate

from platformio import exception, fs, util
from platformio.commands import PlatformioCLI
from platformio.compat import dump_json_to_unicode
from platformio.managers.lib import (LibraryManager, get_builtin_libs,
                                     is_builtin_lib)
from platformio.proc import is_ci
from platformio.project.config import ProjectConfig
from platformio.project.helpers import (get_project_dir,
                                        get_project_global_lib_dir,
                                        get_project_libdeps_dir,
                                        is_platformio_project)

try:
    from urllib.parse import quote
except ImportError:
    from urllib import quote

CTX_META_INPUT_DIRS_KEY = __name__ + ".input_dirs"
CTX_META_PROJECT_ENVIRONMENTS_KEY = __name__ + ".project_environments"
CTX_META_STORAGE_DIRS_KEY = __name__ + ".storage_dirs"
CTX_META_STORAGE_LIBDEPS_KEY = __name__ + ".storage_lib_deps"


@click.group(short_help="Library Manager")
@click.option("-d",
              "--storage-dir",
              multiple=True,
              default=None,
              type=click.Path(exists=True,
                              file_okay=False,
                              dir_okay=True,
                              writable=True,
                              resolve_path=True),
              help="Manage custom library storage")
@click.option("-g",
              "--global",
              is_flag=True,
              help="Manage global PlatformIO library storage")
@click.option(
    "-e",
    "--environment",
    multiple=True,
    help=("Manage libraries for the specific project build environments "
          "declared in `platformio.ini`"))
@click.pass_context
def cli(ctx, **options):
    storage_cmds = ("install", "uninstall", "update", "list")
    # skip commands that don't need storage folder
    if ctx.invoked_subcommand not in storage_cmds or \
            (len(ctx.args) == 2 and ctx.args[1] in ("-h", "--help")):
        return
    storage_dirs = list(options['storage_dir'])
    if options['global']:
        storage_dirs.append(get_project_global_lib_dir())
    if not storage_dirs:
        if is_platformio_project():
            storage_dirs = [get_project_dir()]
        elif is_ci():
            storage_dirs = [get_project_global_lib_dir()]
            click.secho(
                "Warning! Global library storage is used automatically. "
                "Please use `platformio lib --global %s` command to remove "
                "this warning." % ctx.invoked_subcommand,
                fg="yellow")

    if not storage_dirs:
        raise exception.NotGlobalLibDir(get_project_dir(),
                                        get_project_global_lib_dir(),
                                        ctx.invoked_subcommand)

    in_silence = PlatformioCLI.in_silence()
    ctx.meta[CTX_META_PROJECT_ENVIRONMENTS_KEY] = options['environment']
    ctx.meta[CTX_META_INPUT_DIRS_KEY] = storage_dirs
    ctx.meta[CTX_META_STORAGE_DIRS_KEY] = []
    ctx.meta[CTX_META_STORAGE_LIBDEPS_KEY] = {}
    for storage_dir in storage_dirs:
        if not is_platformio_project(storage_dir):
            ctx.meta[CTX_META_STORAGE_DIRS_KEY].append(storage_dir)
            continue
        with fs.cd(storage_dir):
            libdeps_dir = get_project_libdeps_dir()
        config = ProjectConfig.get_instance(join(storage_dir,
                                                 "platformio.ini"))
        config.validate(options['environment'], silent=in_silence)
        for env in config.envs():
            if options['environment'] and env not in options['environment']:
                continue
            storage_dir = join(libdeps_dir, env)
            ctx.meta[CTX_META_STORAGE_DIRS_KEY].append(storage_dir)
            ctx.meta[CTX_META_STORAGE_LIBDEPS_KEY][storage_dir] = config.get(
                "env:" + env, "lib_deps", [])


@cli.command("install", short_help="Install library")
@click.argument("libraries", required=False, nargs=-1, metavar="[LIBRARY...]")
@click.option(
    "--save",
    is_flag=True,
    help="Save installed libraries into the `platformio.ini` dependency list")
@click.option("-s",
              "--silent",
              is_flag=True,
              help="Suppress progress reporting")
@click.option("--interactive",
              is_flag=True,
              help="Allow to make a choice for all prompts")
@click.option("-f",
              "--force",
              is_flag=True,
              help="Reinstall/redownload library if exists")
@click.pass_context
def lib_install(  # pylint: disable=too-many-arguments
        ctx, libraries, save, silent, interactive, force):
    storage_dirs = ctx.meta[CTX_META_STORAGE_DIRS_KEY]
    storage_libdeps = ctx.meta.get(CTX_META_STORAGE_LIBDEPS_KEY, [])

    installed_manifests = {}
    for storage_dir in storage_dirs:
        if not silent and (libraries or storage_dir in storage_libdeps):
            print_storage_header(storage_dirs, storage_dir)
        lm = LibraryManager(storage_dir)
        if libraries:
            for library in libraries:
                pkg_dir = lm.install(library,
                                     silent=silent,
                                     interactive=interactive,
                                     force=force)
                installed_manifests[library] = lm.load_manifest(pkg_dir)
        elif storage_dir in storage_libdeps:
            builtin_lib_storages = None
            for library in storage_libdeps[storage_dir]:
                try:
                    pkg_dir = lm.install(library,
                                         silent=silent,
                                         interactive=interactive,
                                         force=force)
                    installed_manifests[library] = lm.load_manifest(pkg_dir)
                except exception.LibNotFound as e:
                    if builtin_lib_storages is None:
                        builtin_lib_storages = get_builtin_libs()
                    if not silent or not is_builtin_lib(
                            builtin_lib_storages, library):
                        click.secho("Warning! %s" % e, fg="yellow")

    if not save or not libraries:
        return

    input_dirs = ctx.meta.get(CTX_META_INPUT_DIRS_KEY, [])
    project_environments = ctx.meta[CTX_META_PROJECT_ENVIRONMENTS_KEY]
    for input_dir in input_dirs:
        config = ProjectConfig.get_instance(join(input_dir, "platformio.ini"))
        config.validate(project_environments)
        for env in config.envs():
            if project_environments and env not in project_environments:
                continue
            config.expand_interpolations = False
            lib_deps = config.get("env:" + env, "lib_deps", [])
            for library in libraries:
                if library in lib_deps:
                    continue
                manifest = installed_manifests[library]
                try:
                    assert library.lower() == manifest['name'].lower()
                    assert semantic_version.Version(manifest['version'])
                    lib_deps.append("{name}@^{version}".format(**manifest))
                except (AssertionError, ValueError):
                    lib_deps.append(library)
            config.set("env:" + env, "lib_deps", lib_deps)
            config.save()


@cli.command("uninstall", short_help="Uninstall libraries")
@click.argument("libraries", nargs=-1, metavar="[LIBRARY...]")
@click.pass_context
def lib_uninstall(ctx, libraries):
    storage_dirs = ctx.meta[CTX_META_STORAGE_DIRS_KEY]
    for storage_dir in storage_dirs:
        print_storage_header(storage_dirs, storage_dir)
        lm = LibraryManager(storage_dir)
        for library in libraries:
            lm.uninstall(library)


@cli.command("update", short_help="Update installed libraries")
@click.argument("libraries", required=False, nargs=-1, metavar="[LIBRARY...]")
@click.option("-c",
              "--only-check",
              is_flag=True,
              help="DEPRECATED. Please use `--dry-run` instead")
@click.option("--dry-run",
              is_flag=True,
              help="Do not update, only check for the new versions")
@click.option("--json-output", is_flag=True)
@click.pass_context
def lib_update(ctx, libraries, only_check, dry_run, json_output):
    storage_dirs = ctx.meta[CTX_META_STORAGE_DIRS_KEY]
    only_check = dry_run or only_check
    json_result = {}
    for storage_dir in storage_dirs:
        if not json_output:
            print_storage_header(storage_dirs, storage_dir)
        lm = LibraryManager(storage_dir)

        _libraries = libraries
        if not _libraries:
            _libraries = [
                manifest['__pkg_dir'] for manifest in lm.get_installed()
            ]

        if only_check and json_output:
            result = []
            for library in _libraries:
                pkg_dir = library if isdir(library) else None
                requirements = None
                url = None
                if not pkg_dir:
                    name, requirements, url = lm.parse_pkg_uri(library)
                    pkg_dir = lm.get_package_dir(name, requirements, url)
                if not pkg_dir:
                    continue
                latest = lm.outdated(pkg_dir, requirements)
                if not latest:
                    continue
                manifest = lm.load_manifest(pkg_dir)
                manifest['versionLatest'] = latest
                result.append(manifest)
            json_result[storage_dir] = result
        else:
            for library in _libraries:
                lm.update(library, only_check=only_check)

    if json_output:
        return click.echo(
            dump_json_to_unicode(json_result[storage_dirs[0]]
                                 if len(storage_dirs) == 1 else json_result))

    return True


@cli.command("list", short_help="List installed libraries")
@click.option("--json-output", is_flag=True)
@click.pass_context
def lib_list(ctx, json_output):
    storage_dirs = ctx.meta[CTX_META_STORAGE_DIRS_KEY]
    json_result = {}
    for storage_dir in storage_dirs:
        if not json_output:
            print_storage_header(storage_dirs, storage_dir)
        lm = LibraryManager(storage_dir)
        items = lm.get_installed()
        if json_output:
            json_result[storage_dir] = items
        elif items:
            for item in sorted(items, key=lambda i: i['name']):
                print_lib_item(item)
        else:
            click.echo("No items found")

    if json_output:
        return click.echo(
            dump_json_to_unicode(json_result[storage_dirs[0]]
                                 if len(storage_dirs) == 1 else json_result))

    return True


@cli.command("search", short_help="Search for a library")
@click.argument("query", required=False, nargs=-1)
@click.option("--json-output", is_flag=True)
@click.option("--page", type=click.INT, default=1)
@click.option("--id", multiple=True)
@click.option("-n", "--name", multiple=True)
@click.option("-a", "--author", multiple=True)
@click.option("-k", "--keyword", multiple=True)
@click.option("-f", "--framework", multiple=True)
@click.option("-p", "--platform", multiple=True)
@click.option("-i", "--header", multiple=True)
@click.option("--noninteractive",
              is_flag=True,
              help="Do not prompt, automatically paginate with delay")
def lib_search(query, json_output, page, noninteractive, **filters):
    if not query:
        query = []
    if not isinstance(query, list):
        query = list(query)

    for key, values in filters.items():
        for value in values:
            query.append('%s:"%s"' % (key, value))

    result = util.get_api_result("/v2/lib/search",
                                 dict(query=" ".join(query), page=page),
                                 cache_valid="1d")

    if json_output:
        click.echo(dump_json_to_unicode(result))
        return

    if result['total'] == 0:
        click.secho(
            "Nothing has been found by your request\n"
            "Try a less-specific search or use truncation (or wildcard) "
            "operator",
            fg="yellow",
            nl=False)
        click.secho(" *", fg="green")
        click.secho("For example: DS*, PCA*, DHT* and etc.\n", fg="yellow")
        click.echo("For more examples and advanced search syntax, "
                   "please use documentation:")
        click.secho(
            "https://docs.platformio.org/page/userguide/lib/cmd_search.html\n",
            fg="cyan")
        return

    click.secho("Found %d libraries:\n" % result['total'],
                fg="green" if result['total'] else "yellow")

    while True:
        for item in result['items']:
            print_lib_item(item)

        if (int(result['page']) * int(result['perpage']) >= int(
                result['total'])):
            break

        if noninteractive:
            click.echo()
            click.secho("Loading next %d libraries... Press Ctrl+C to stop!" %
                        result['perpage'],
                        fg="yellow")
            click.echo()
            time.sleep(5)
        elif not click.confirm("Show next libraries?"):
            break
        result = util.get_api_result("/v2/lib/search", {
            "query": " ".join(query),
            "page": int(result['page']) + 1
        },
                                     cache_valid="1d")


@cli.command("builtin", short_help="List built-in libraries")
@click.option("--storage", multiple=True)
@click.option("--json-output", is_flag=True)
def lib_builtin(storage, json_output):
    items = get_builtin_libs(storage)
    if json_output:
        return click.echo(dump_json_to_unicode(items))

    for storage_ in items:
        if not storage_['items']:
            continue
        click.secho(storage_['name'], fg="green")
        click.echo("*" * len(storage_['name']))
        click.echo()

        for item in sorted(storage_['items'], key=lambda i: i['name']):
            print_lib_item(item)

    return True


@cli.command("show", short_help="Show detailed info about a library")
@click.argument("library", metavar="[LIBRARY]")
@click.option("--json-output", is_flag=True)
def lib_show(library, json_output):
    lm = LibraryManager()
    name, requirements, _ = lm.parse_pkg_uri(library)
    lib_id = lm.search_lib_id({
        "name": name,
        "requirements": requirements
    },
                              silent=json_output,
                              interactive=not json_output)
    lib = util.get_api_result("/lib/info/%d" % lib_id, cache_valid="1d")
    if json_output:
        return click.echo(dump_json_to_unicode(lib))

    click.secho(lib['name'], fg="cyan")
    click.echo("=" * len(lib['name']))
    click.secho("#ID: %d" % lib['id'], bold=True)
    click.echo(lib['description'])
    click.echo()

    click.echo(
        "Version: %s, released %s" %
        (lib['version']['name'],
         time.strftime("%c", util.parse_date(lib['version']['released']))))
    click.echo("Manifest: %s" % lib['confurl'])
    for key in ("homepage", "repository", "license"):
        if key not in lib or not lib[key]:
            continue
        if isinstance(lib[key], list):
            click.echo("%s: %s" % (key.title(), ", ".join(lib[key])))
        else:
            click.echo("%s: %s" % (key.title(), lib[key]))

    blocks = []

    _authors = []
    for author in lib.get("authors", []):
        _data = []
        for key in ("name", "email", "url", "maintainer"):
            if not author[key]:
                continue
            if key == "email":
                _data.append("<%s>" % author[key])
            elif key == "maintainer":
                _data.append("(maintainer)")
            else:
                _data.append(author[key])
        _authors.append(" ".join(_data))
    if _authors:
        blocks.append(("Authors", _authors))

    blocks.append(("Keywords", lib['keywords']))
    for key in ("frameworks", "platforms"):
        if key not in lib or not lib[key]:
            continue
        blocks.append(("Compatible %s" % key, [i['title'] for i in lib[key]]))
    blocks.append(("Headers", lib['headers']))
    blocks.append(("Examples", lib['examples']))
    blocks.append(("Versions", [
        "%s, released %s" %
        (v['name'], time.strftime("%c", util.parse_date(v['released'])))
        for v in lib['versions']
    ]))
    blocks.append(("Unique Downloads", [
        "Today: %s" % lib['dlstats']['day'],
        "Week: %s" % lib['dlstats']['week'],
        "Month: %s" % lib['dlstats']['month']
    ]))

    for (title, rows) in blocks:
        click.echo()
        click.secho(title, bold=True)
        click.echo("-" * len(title))
        for row in rows:
            click.echo(row)

    return True


@cli.command("register", short_help="Register a new library")
@click.argument("config_url")
def lib_register(config_url):
    if (not config_url.startswith("http://")
            and not config_url.startswith("https://")):
        raise exception.InvalidLibConfURL(config_url)

    result = util.get_api_result("/lib/register",
                                 data=dict(config_url=config_url))
    if "message" in result and result['message']:
        click.secho(result['message'],
                    fg="green" if "successed" in result and result['successed']
                    else "red")


@cli.command("stats", short_help="Library Registry Statistics")
@click.option("--json-output", is_flag=True)
def lib_stats(json_output):
    result = util.get_api_result("/lib/stats", cache_valid="1h")

    if json_output:
        return click.echo(dump_json_to_unicode(result))

    for key in ("updated", "added"):
        tabular_data = [(click.style(item['name'], fg="cyan"),
                         time.strftime("%c", util.parse_date(item['date'])),
                         "https://platformio.org/lib/show/%s/%s" %
                         (item['id'], quote(item['name'])))
                        for item in result.get(key, [])]
        table = tabulate(tabular_data,
                         headers=[
                             click.style("RECENTLY " + key.upper(), bold=True),
                             "Date", "URL"
                         ])
        click.echo(table)
        click.echo()

    for key in ("lastkeywords", "topkeywords"):
        tabular_data = [(click.style(name, fg="cyan"),
                         "https://platformio.org/lib/search?query=" +
                         quote("keyword:%s" % name))
                        for name in result.get(key, [])]
        table = tabulate(
            tabular_data,
            headers=[
                click.style(
                    ("RECENT" if key == "lastkeywords" else "POPULAR") +
                    " KEYWORDS",
                    bold=True), "URL"
            ])
        click.echo(table)
        click.echo()

    for key, title in (("dlday", "Today"), ("dlweek", "Week"), ("dlmonth",
                                                                "Month")):
        tabular_data = [(click.style(item['name'], fg="cyan"),
                         "https://platformio.org/lib/show/%s/%s" %
                         (item['id'], quote(item['name'])))
                        for item in result.get(key, [])]
        table = tabulate(tabular_data,
                         headers=[
                             click.style("FEATURED: " + title.upper(),
                                         bold=True), "URL"
                         ])
        click.echo(table)
        click.echo()

    return True


def print_storage_header(storage_dirs, storage_dir):
    if storage_dirs and storage_dirs[0] != storage_dir:
        click.echo("")
    click.echo(
        click.style("Library Storage: ", bold=True) +
        click.style(storage_dir, fg="blue"))


def print_lib_item(item):
    click.secho(item['name'], fg="cyan")
    click.echo("=" * len(item['name']))
    if "id" in item:
        click.secho("#ID: %d" % item['id'], bold=True)
    if "description" in item or "url" in item:
        click.echo(item.get("description", item.get("url", "")))
    click.echo()

    for key in ("version", "homepage", "license", "keywords"):
        if key not in item or not item[key]:
            continue
        if isinstance(item[key], list):
            click.echo("%s: %s" % (key.title(), ", ".join(item[key])))
        else:
            click.echo("%s: %s" % (key.title(), item[key]))

    for key in ("frameworks", "platforms"):
        if key not in item:
            continue
        click.echo("Compatible %s: %s" % (key, ", ".join(
            [i['title'] if isinstance(i, dict) else i for i in item[key]])))

    if "authors" in item or "authornames" in item:
        click.echo("Authors: %s" % ", ".join(
            item.get("authornames",
                     [a.get("name", "") for a in item.get("authors", [])])))

    if "__src_url" in item:
        click.secho("Source: %s" % item['__src_url'])
    click.echo()