# This file is part of cloud-init. See LICENSE file for license information.

from . import eni

from . import freebsd

from . import netbsd

from . import netplan

from . import RendererNotFoundError

from . import openbsd

from . import sysconfig

NAME_TO_RENDERER = {

    "eni": eni,

    "freebsd": freebsd,

    "netbsd": netbsd,

    "netplan": netplan,

    "openbsd": openbsd,

    "sysconfig": sysconfig,

}

DEFAULT_PRIORITY = ["eni", "sysconfig", "netplan", "freebsd",

                    "netbsd", "openbsd"]

def search(priority=None, target=None, first=False):

    if priority is None:

        priority = DEFAULT_PRIORITY

    available = NAME_TO_RENDERER

    unknown = [i for i in priority if i not in available]

    if unknown:

        raise ValueError(

            "Unknown renderers provided in priority list: %s" % unknown)

    found = []

    for name in priority:

        render_mod = available[name]

        if render_mod.available(target):

            cur = (name, render_mod.Renderer)

            if first:

                return cur

            found.append(cur)

    return found

def select(priority=None, target=None):

    found = search(priority, target=target, first=True)

    if not found:

        if priority is None:

            priority = DEFAULT_PRIORITY

        tmsg = ""

        if target and target != "/":

            tmsg = " in target=%s" % target

        raise RendererNotFoundError(

            "No available network renderers found%s. Searched "

            "through list: %s" % (tmsg, priority))

    return found

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