# BSD 2-Clause License
#
# Apprise - Push Notification Library.
# Copyright (c) 2026, Chris Caron <lead2gold@gmail.com>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
#    this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

# To use this plugin, simply signup with clicksend:
#  https://www.clicksend.com/
#
# You're done at this point, you only need to know your user/pass that
# you signed up with.

#  The following URLs would be accepted by Apprise:
#   - clicksend://{user}:{password}@{phoneno}
#   - clicksend://{user}:{password}@{phoneno1}/{phoneno2}

# The API reference used to build this plugin was documented here:
#  https://developers.clicksend.com/docs/rest/v3/
#
from json import dumps

import requests

from ..common import NotifyType
from ..locale import gettext_lazy as _
from ..url import PrivacyMode
from ..utils.parse import is_phone_no, parse_bool, parse_phone_no
from .base import NotifyBase

# Extend HTTP Error Messages
CLICKSEND_HTTP_ERROR_MAP = {
    401: "Unauthorized - Invalid Token.",
}


class NotifyClickSend(NotifyBase):
    """A wrapper for ClickSend Notifications."""

    # The default descriptive name associated with the Notification
    service_name = "ClickSend"

    # The services URL
    service_url = "https://clicksend.com/"

    # The default secure protocol
    secure_protocol = "clicksend"

    # A URL that takes you to the setup/help of the specific protocol
    setup_url = "https://appriseit.com/services/clicksend/"

    # ClickSend uses the http protocol with JSON requests
    notify_url = "https://rest.clicksend.com/v3/sms/send"

    # The maximum length of the body
    body_maxlen = 160

    # A title can not be used for SMS Messages.  Setting this to zero will
    # cause any title (if defined) to get placed into the message body.
    title_maxlen = 0

    # The maximum SMS batch size accepted by the ClickSend API
    default_batch_size = 1000

    # Define object templates
    templates = ("{schema}://{user}:{apikey}@{targets}",)

    # Define our template tokens
    template_tokens = dict(
        NotifyBase.template_tokens,
        **{
            "user": {
                "name": _("User Name"),
                "type": "string",
                "required": True,
            },
            "apikey": {
                "name": _("API Key"),
                "type": "string",
                "private": True,
                "required": True,
                "map_to": "password",
            },
            "target_phone": {
                "name": _("Target Phone No"),
                "type": "string",
                "prefix": "+",
                "regex": (r"^[0-9\s)(+-]+$", "i"),
                "map_to": "targets",
            },
            "targets": {
                "name": _("Targets"),
                "type": "list:string",
                "required": True,
            },
        },
    )

    # Define our template arguments
    template_args = dict(
        NotifyBase.template_args,
        **{
            "key": {
                "alias_of": "apikey",
            },
            "to": {
                "alias_of": "targets",
            },
            "batch": {
                "name": _("Batch Mode"),
                "type": "bool",
                "default": False,
            },
        },
    )

    def __init__(self, targets=None, batch=False, **kwargs):
        """Initialize ClickSend Object."""
        super().__init__(**kwargs)

        # Prepare Batch Mode Flag
        self.batch = batch

        # Parse our targets
        self.targets = []

        if not (self.user and self.password):
            msg = "A ClickSend user/pass was not provided."
            self.logger.warning(msg)
            raise TypeError(msg)

        for target in parse_phone_no(targets):
            # Validate targets and drop bad ones:
            result = is_phone_no(target)
            if not result:
                self.logger.warning(
                    f"Dropped invalid phone # ({target}) specified.",
                )
                continue

            # store valid phone number
            self.targets.append(result["full"])

    def send(self, body, title="", notify_type=NotifyType.INFO, **kwargs):
        """Perform ClickSend Notification."""

        if len(self.targets) == 0:
            # There were no services to notify
            self.logger.warning("There were no ClickSend targets to notify.")
            return False

        headers = {
            "User-Agent": self.app_id,
            "Content-Type": "application/json; charset=utf-8",
        }

        # error tracking (used for function return)
        has_error = False

        # prepare JSON Object
        payload = {"messages": []}

        # Send in batches if identified to do so
        default_batch_size = 1 if not self.batch else self.default_batch_size

        for index in range(0, len(self.targets), default_batch_size):
            payload["messages"] = [
                {
                    "source": "php",
                    "body": body,
                    "to": f"+{to}",
                }
                for to in self.targets[index : index + default_batch_size]
            ]

            self.logger.debug(
                "ClickSend POST URL:"
                f" {self.notify_url} (cert_verify={self.verify_certificate!r})"
            )
            self.logger.debug(f"ClickSend Payload: {payload!s}")

            # Always call throttle before any remote server i/o is made
            self.throttle()
            try:
                r = requests.post(
                    self.notify_url,
                    data=dumps(payload),
                    auth=(self.user, self.password),
                    headers=headers,
                    verify=self.verify_certificate,
                    timeout=self.request_timeout,
                )
                if r.status_code != requests.codes.ok:
                    # We had a problem
                    status_str = NotifyClickSend.http_response_code_lookup(
                        r.status_code, CLICKSEND_HTTP_ERROR_MAP
                    )

                    self.logger.warning(
                        "Failed to send {} ClickSend notification{}: "
                        "{}{}error={}.".format(
                            len(payload["messages"]),
                            (
                                f" to {self.targets[index]}"
                                if default_batch_size == 1
                                else "(s)"
                            ),
                            status_str,
                            ", " if status_str else "",
                            r.status_code,
                        )
                    )

                    self.logger.debug(
                        "Response Details:\r\n%r", (r.content or b"")[:2000]
                    )

                    # Mark our failure
                    has_error = True
                    continue

                else:
                    self.logger.info(
                        "Sent {} ClickSend notification{}.".format(
                            len(payload["messages"]),
                            (
                                f" to {self.targets[index]}"
                                if default_batch_size == 1
                                else "(s)"
                            ),
                        )
                    )

            except requests.RequestException as e:
                self.logger.warning(
                    "A Connection error occurred sending {} ClickSend "
                    "notification(s).".format(len(payload["messages"]))
                )
                self.logger.debug(f"Socket Exception: {e!s}")

                # Mark our failure
                has_error = True
                continue

        return not has_error

    def url(self, privacy=False, *args, **kwargs):
        """Returns the URL built dynamically based on specified arguments."""

        # Define any URL parameters
        params = {
            "batch": "yes" if self.batch else "no",
        }

        # Extend our parameters
        params.update(self.url_parameters(privacy=privacy, *args, **kwargs))

        # Setup Authentication
        auth = "{user}:{password}@".format(
            user=NotifyClickSend.quote(self.user, safe=""),
            password=self.pprint(
                self.password, privacy, mode=PrivacyMode.Secret, safe=""
            ),
        )

        return "{schema}://{auth}{targets}?{params}".format(
            schema=self.secure_protocol,
            auth=auth,
            targets="/".join(
                [NotifyClickSend.quote(x, safe="") for x in self.targets]
            ),
            params=NotifyClickSend.urlencode(params),
        )

    @property
    def url_identifier(self):
        """Returns all of the identifiers that make this URL unique from
        another simliar one.

        Targets or end points should never be identified here.
        """
        return (self.secure_protocol, self.user, self.password)

    def __len__(self):
        """Returns the number of targets associated with this notification."""
        #
        # Factor batch into calculation
        #
        batch_size = 1 if not self.batch else self.default_batch_size
        targets = len(self.targets)
        if batch_size > 1:
            targets = int(targets / batch_size) + (
                1 if targets % batch_size else 0
            )

        return targets

    @staticmethod
    def parse_url(url):
        """Parses the URL and returns enough arguments that can allow us to re-
        instantiate this object."""
        results = NotifyBase.parse_url(url, verify_host=False)
        if not results:
            # We're done early as we couldn't load the results
            return results

        # All elements are targets
        results["targets"] = [NotifyClickSend.unquote(results["host"])]

        # All entries after the hostname are additional targets
        results["targets"].extend(
            NotifyClickSend.split_path(results["fullpath"])
        )

        # Get Batch Mode Flag
        results["batch"] = parse_bool(results["qsd"].get("batch", False))

        # API Key
        if "key" in results["qsd"] and len(results["qsd"]["key"]):
            # Extract the API Key from an argument
            results["password"] = NotifyClickSend.unquote(
                results["qsd"]["key"]
            )

        # Support the 'to' variable so that we can support rooms this way too
        # The 'to' makes it easier to use yaml configuration
        if "to" in results["qsd"] and len(results["qsd"]["to"]):
            results["targets"] += NotifyClickSend.parse_phone_no(
                results["qsd"]["to"]
            )

        return results
