# 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-arguments, too-many-locals, too-many-branches
# pylint: disable=too-many-return-statements

import json
import re
from glob import glob
from os.path import isdir, join

import click

from platformio import app, commands, exception, util
from platformio.managers.package import BasePkgManager
from platformio.managers.platform import PlatformFactory, PlatformManager


class LibraryManager(BasePkgManager):

    def __init__(self, package_dir=None):
        if not package_dir:
            package_dir = join(util.get_home_dir(), "lib")
        super(LibraryManager, self).__init__(package_dir)

    @property
    def manifest_names(self):
        return [
            ".library.json", "library.json", "library.properties",
            "module.json"
        ]

    def get_manifest_path(self, pkg_dir):
        path = BasePkgManager.get_manifest_path(self, pkg_dir)
        if path:
            return path

        # if library without manifest, returns first source file
        src_dir = join(util.glob_escape(pkg_dir))
        if isdir(join(pkg_dir, "src")):
            src_dir = join(src_dir, "src")
        chs_files = glob(join(src_dir, "*.[chS]"))
        if chs_files:
            return chs_files[0]
        cpp_files = glob(join(src_dir, "*.cpp"))
        if cpp_files:
            return cpp_files[0]

        return None

    def load_manifest(self, pkg_dir):
        manifest = BasePkgManager.load_manifest(self, pkg_dir)
        if not manifest:
            return manifest

        # if Arduino library.properties
        if "sentence" in manifest:
            manifest['frameworks'] = ["arduino"]
            manifest['description'] = manifest['sentence']
            del manifest['sentence']

        if "author" in manifest:
            if isinstance(manifest['author'], dict):
                manifest['authors'] = [manifest['author']]
            else:
                manifest['authors'] = [{"name": manifest['author']}]
            del manifest['author']

        if "authors" in manifest and not isinstance(manifest['authors'], list):
            manifest['authors'] = [manifest['authors']]

        if "keywords" not in manifest:
            keywords = []
            for keyword in re.split(r"[\s/]+",
                                    manifest.get("category", "Uncategorized")):
                keyword = keyword.strip()
                if not keyword:
                    continue
                keywords.append(keyword.lower())
            manifest['keywords'] = keywords
            if "category" in manifest:
                del manifest['category']

        # don't replace VCS URL
        if "url" in manifest and "description" in manifest:
            manifest['homepage'] = manifest['url']
            del manifest['url']

        if "architectures" in manifest:
            platforms = []
            platforms_map = {
                "avr": "atmelavr",
                "sam": "atmelsam",
                "samd": "atmelsam",
                "esp8266": "espressif8266",
                "esp32": "espressif32",
                "arc32": "intel_arc32"
            }
            for arch in manifest['architectures'].split(","):
                arch = arch.strip()
                if arch == "*":
                    platforms = "*"
                    break
                if arch in platforms_map:
                    platforms.append(platforms_map[arch])
            manifest['platforms'] = platforms
            del manifest['architectures']

        # convert listed items via comma to array
        for key in ("keywords", "frameworks", "platforms"):
            if key not in manifest or \
                    not isinstance(manifest[key], basestring):
                continue
            manifest[key] = [
                i.strip() for i in manifest[key].split(",") if i.strip()
            ]

        return manifest

    @staticmethod
    def normalize_dependencies(dependencies):
        if not dependencies:
            return []
        items = []
        if isinstance(dependencies, dict):
            if "name" in dependencies:
                items.append(dependencies)
            else:
                for name, version in dependencies.items():
                    items.append({"name": name, "version": version})
        elif isinstance(dependencies, list):
            items = [d for d in dependencies if "name" in d]
        for item in items:
            for k in ("frameworks", "platforms"):
                if k not in item or isinstance(k, list):
                    continue
                if item[k] == "*":
                    del item[k]
                elif isinstance(item[k], basestring):
                    item[k] = [
                        i.strip() for i in item[k].split(",") if i.strip()
                    ]
        return items

    def max_satisfying_repo_version(self, versions, requirements=None):

        def _cmp_dates(datestr1, datestr2):
            date1 = util.parse_date(datestr1)
            date2 = util.parse_date(datestr2)
            if date1 == date2:
                return 0
            return -1 if date1 < date2 else 1

        semver_spec = self.parse_semver_spec(
            requirements) if requirements else None
        item = None

        for v in versions:
            semver_new = self.parse_semver_version(v['name'])
            if semver_spec:
                if not semver_new or semver_new not in semver_spec:
                    continue
                if not item or self.parse_semver_version(
                        item['name']) < semver_new:
                    item = v
            elif requirements:
                if requirements == v['name']:
                    return v

            else:
                if not item or _cmp_dates(item['released'],
                                          v['released']) == -1:
                    item = v
        return item

    def get_latest_repo_version(self, name, requirements, silent=False):
        item = self.max_satisfying_repo_version(
            util.get_api_result(
                "/lib/info/%d" % self.search_lib_id(
                    {
                        "name": name,
                        "requirements": requirements
                    },
                    silent=silent),
                cache_valid="1h")['versions'], requirements)
        return item['name'] if item else None

    def _install_from_piorepo(self, name, requirements):
        assert name.startswith("id="), name
        version = self.get_latest_repo_version(name, requirements)
        if not version:
            raise exception.UndefinedPackageVersion(requirements or "latest",
                                                    util.get_systype())
        dl_data = util.get_api_result(
            "/lib/download/" + str(name[3:]),
            dict(version=version),
            cache_valid="30d")
        assert dl_data

        return self._install_from_url(
            name, dl_data['url'].replace("http://", "https://")
            if app.get_setting("enable_ssl") else dl_data['url'], requirements)

    def search_lib_id(  # pylint: disable=too-many-branches
            self,
            filters,
            silent=False,
            interactive=False):
        assert isinstance(filters, dict)
        assert "name" in filters

        # try to find ID within installed packages
        lib_id = self._get_lib_id_from_installed(filters)
        if lib_id:
            return lib_id

        # looking in PIO Library Registry
        if not silent:
            click.echo("Looking for %s library in registry" % click.style(
                filters['name'], fg="cyan"))
        query = []
        for key in filters:
            if key not in ("name", "authors", "frameworks", "platforms"):
                continue
            values = filters[key]
            if not isinstance(values, list):
                values = [v.strip() for v in values.split(",") if v]
            for value in values:
                query.append('%s:"%s"' %
                             (key[:-1] if key.endswith("s") else key, value))

        lib_info = None
        result = util.get_api_result(
            "/v2/lib/search", dict(query=" ".join(query)), cache_valid="1h")
        if result['total'] == 1:
            lib_info = result['items'][0]
        elif result['total'] > 1:
            if silent and not interactive:
                lib_info = result['items'][0]
            else:
                click.secho(
                    "Conflict: More than one library has been found "
                    "by request %s:" % json.dumps(filters),
                    fg="yellow",
                    err=True)
                for item in result['items']:
                    commands.lib.print_lib_item(item)

                if not interactive:
                    click.secho(
                        "Automatically chose the first available library "
                        "(use `--interactive` option to make a choice)",
                        fg="yellow",
                        err=True)
                    lib_info = result['items'][0]
                else:
                    deplib_id = click.prompt(
                        "Please choose library ID",
                        type=click.Choice(
                            [str(i['id']) for i in result['items']]))
                    for item in result['items']:
                        if item['id'] == int(deplib_id):
                            lib_info = item
                            break

        if not lib_info:
            if filters.keys() == ["name"]:
                raise exception.LibNotFound(filters['name'])
            else:
                raise exception.LibNotFound(str(filters))
        if not silent:
            click.echo("Found: %s" % click.style(
                "https://platformio.org/lib/show/{id}/{name}".format(
                    **lib_info),
                fg="blue"))
        return int(lib_info['id'])

    def _get_lib_id_from_installed(self, filters):
        if filters['name'].startswith("id="):
            return int(filters['name'][3:])
        package_dir = self.get_package_dir(
            filters['name'], filters.get("requirements",
                                         filters.get("version")))
        if not package_dir:
            return None
        manifest = self.load_manifest(package_dir)
        if "id" not in manifest:
            return None

        for key in ("frameworks", "platforms"):
            if key not in filters:
                continue
            if key not in manifest:
                return None
            if not util.items_in_list(
                    util.items_to_list(filters[key]),
                    util.items_to_list(manifest[key])):
                return None

        if "authors" in filters:
            if "authors" not in manifest:
                return None
            manifest_authors = manifest['authors']
            if not isinstance(manifest_authors, list):
                manifest_authors = [manifest_authors]
            manifest_authors = [
                a['name'] for a in manifest_authors
                if isinstance(a, dict) and "name" in a
            ]
            filter_authors = filters['authors']
            if not isinstance(filter_authors, list):
                filter_authors = [filter_authors]
            if not set(filter_authors) <= set(manifest_authors):
                return None

        return int(manifest['id'])

    def install(  # pylint: disable=arguments-differ
            self,
            name,
            requirements=None,
            silent=False,
            after_update=False,
            interactive=False,
            force=False):
        _name, _requirements, _url = self.parse_pkg_uri(name, requirements)
        if not _url:
            name = "id=%d" % self.search_lib_id({
                "name": _name,
                "requirements": _requirements
            },
                                                silent=silent,
                                                interactive=interactive)
            requirements = _requirements
        pkg_dir = BasePkgManager.install(
            self,
            name,
            requirements,
            silent=silent,
            after_update=after_update,
            force=force)

        if not pkg_dir:
            return None

        manifest = self.load_manifest(pkg_dir)
        if "dependencies" not in manifest:
            return pkg_dir

        if not silent:
            click.secho("Installing dependencies", fg="yellow")

        for filters in self.normalize_dependencies(manifest['dependencies']):
            assert "name" in filters

            # avoid circle dependencies
            if not self.INSTALL_HISTORY:
                self.INSTALL_HISTORY = []
            history_key = str(filters)
            if history_key in self.INSTALL_HISTORY:
                continue
            self.INSTALL_HISTORY.append(history_key)

            if any(s in filters.get("version", "") for s in ("\\", "/")):
                self.install(
                    "{name}={version}".format(**filters),
                    silent=silent,
                    after_update=after_update,
                    interactive=interactive,
                    force=force)
            else:
                try:
                    lib_id = self.search_lib_id(filters, silent, interactive)
                except exception.LibNotFound as e:
                    if not silent or is_builtin_lib(filters['name']):
                        click.secho("Warning! %s" % e, fg="yellow")
                    continue

                if filters.get("version"):
                    self.install(
                        lib_id,
                        filters.get("version"),
                        silent=silent,
                        after_update=after_update,
                        interactive=interactive,
                        force=force)
                else:
                    self.install(
                        lib_id,
                        silent=silent,
                        after_update=after_update,
                        interactive=interactive,
                        force=force)
        return pkg_dir


@util.memoized()
def get_builtin_libs(storage_names=None):
    items = []
    storage_names = storage_names or []
    pm = PlatformManager()
    for manifest in pm.get_installed():
        p = PlatformFactory.newPlatform(manifest['__pkg_dir'])
        for storage in p.get_lib_storages():
            if storage_names and storage['name'] not in storage_names:
                continue
            lm = LibraryManager(storage['path'])
            items.append({
                "name": storage['name'],
                "path": storage['path'],
                "items": lm.get_installed()
            })
    return items


@util.memoized()
def is_builtin_lib(name):
    for storage in get_builtin_libs():
        if any(l.get("name") == name for l in storage['items']):
            return True
    return False