# 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.

from json import dumps

import requests

from ..common import NotifyType
from ..locale import gettext_lazy as _
from ..url import PrivacyMode
from .base import NotifyBase

# For API Details see:
# https://kb.synology.com/en-au/DSM/help/Chat/chat_integration


class NotifySynology(NotifyBase):
    """A wrapper for Synology Chat Notifications."""

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

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

    # The default protocol
    protocol = "synology"

    # The default secure protocol
    secure_protocol = "synologys"

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

    # Title is to be part of body
    title_maxlen = 0

    # Disable throttle rate for Synology requests since they are normally
    # local anyway
    request_rate_per_sec = 0

    # Define object templates
    templates = (
        "{schema}://{host}/{token}",
        "{schema}://{host}:{port}/{token}",
        "{schema}://{user}@{host}/{token}",
        "{schema}://{user}@{host}:{port}/{token}",
        "{schema}://{user}:{password}@{host}/{token}",
        "{schema}://{user}:{password}@{host}:{port}/{token}",
    )

    # Define our tokens; these are the minimum tokens required required to
    # be passed into this function (as arguments). The syntax appends any
    # previously defined in the base package and builds onto them
    template_tokens = dict(
        NotifyBase.template_tokens,
        **{
            "host": {
                "name": _("Hostname"),
                "type": "string",
                "required": True,
            },
            "port": {
                "name": _("Port"),
                "type": "int",
                "min": 1,
                "max": 65535,
            },
            "user": {
                "name": _("Username"),
                "type": "string",
            },
            "password": {
                "name": _("Password"),
                "type": "string",
                "private": True,
            },
            "token": {
                "name": _("Token"),
                "type": "string",
                "required": True,
                "private": True,
            },
        },
    )

    # Define our template arguments
    template_args = dict(
        NotifyBase.template_args,
        **{
            "file_url": {
                "name": _("Upload"),
                "type": "string",
            },
            "token": {
                "alias_of": "token",
            },
        },
    )

    # Define any kwargs we're using
    template_kwargs = {
        "headers": {
            "name": _("HTTP Header"),
            "prefix": "+",
        },
    }

    def __init__(self, token=None, headers=None, file_url=None, **kwargs):
        """Initialize Synology Chat Object.

        headers can be a dictionary of key/value pairs that you want to
        additionally include as part of the server headers to post with
        """
        super().__init__(**kwargs)

        self.token = token
        if not self.token:
            msg = f"An invalid Synology Token ({token}) was specified."
            self.logger.warning(msg)
            raise TypeError(msg)

        self.fullpath = kwargs.get("fullpath")

        # A URL to an attachment you want to upload (must be less then 32MB
        # Acording to API details (at the time of writing plugin)
        self.file_url = file_url

        self.headers = {}
        if headers:
            # Store our extra headers
            self.headers.update(headers)

        return

    @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 if self.secure else self.protocol,
            self.user,
            self.password,
            self.host,
            self.port,
            self.token,
            self.fullpath.rstrip("/"),
        )

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

        # Define any URL parameters
        params = {}

        if self.file_url:
            params["file_url"] = self.file_url

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

        # Append our headers into our parameters
        params.update({f"+{k}": v for k, v in self.headers.items()})

        # Determine Authentication
        auth = ""
        if self.user and self.password:
            auth = "{user}:{password}@".format(
                user=NotifySynology.quote(self.user, safe=""),
                password=self.pprint(
                    self.password, privacy, mode=PrivacyMode.Secret, safe=""
                ),
            )
        elif self.user:
            auth = "{user}@".format(
                user=NotifySynology.quote(self.user, safe=""),
            )

        default_port = 443 if self.secure else 80

        return (
            "{schema}://{auth}{hostname}{port}/{token}"
            "{fullpath}?{params}".format(
                schema=self.secure_protocol if self.secure else self.protocol,
                auth=auth,
                # never encode hostname since we're expecting it to be a valid
                # one
                hostname=self.host,
                port=(
                    ""
                    if self.port is None or self.port == default_port
                    else f":{self.port}"
                ),
                token=self.pprint(self.token, privacy, safe=""),
                fullpath=(
                    NotifySynology.quote(self.fullpath, safe="/")
                    if self.fullpath
                    else "/"
                ),
                params=NotifySynology.urlencode(params),
            )
        )

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

        # Prepare HTTP Headers
        headers = {
            "User-Agent": self.app_id,
            "Content-Type": "application/x-www-form-urlencoded",
            "Accept": "*/*",
        }

        # Apply any/all header over-rides defined
        headers.update(self.headers)

        # prepare Synology Object
        payload = {
            "text": body,
        }

        if self.file_url:
            payload["file_url"] = self.file_url

        # Prepare our parameters
        params = {
            "api": "SYNO.Chat.External",
            "method": "incoming",
            "version": 2,
            "token": self.token,
        }

        auth = None
        if self.user:
            auth = (self.user, self.password)

        # Set our schema
        schema = "https" if self.secure else "http"

        url = f"{schema}://{self.host}"
        if isinstance(self.port, int):
            url += f":{self.port}"

        # Prepare our Synology API URL
        url += self.fullpath + "/webapi/entry.cgi"

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

        # Always call throttle before any remote server i/o is made
        self.throttle()

        try:
            r = requests.post(
                url,
                data=f"payload={dumps(payload)}",
                params=params,
                headers=headers,
                auth=auth,
                verify=self.verify_certificate,
                timeout=self.request_timeout,
            )
            if r.status_code < 200 or r.status_code >= 300:
                # We had a problem
                status_str = NotifySynology.http_response_code_lookup(
                    r.status_code
                )

                self.logger.warning(
                    "Failed to send Synology Chat %s notification: "
                    "%serror=%s.",
                    status_str,
                    ", " if status_str else "",
                    r.status_code,
                )

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

                # Return; we're done
                return False

            else:
                self.logger.info("Sent Synology Chat notification.")

        except requests.RequestException as e:
            self.logger.warning(
                "A Connection error occurred sending Synology "
                f"Chat notification to {self.host}."
            )
            self.logger.debug(f"Socket Exception: {e!s}")

            # Return; we're done
            return False

        return True

    @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)
        if not results:
            # We're done early as we couldn't load the results
            return results

        # Add our headers that the user can potentially over-ride if they wish
        # to to our returned result set and tidy entries by unquoting them
        results["headers"] = {
            NotifySynology.unquote(x): NotifySynology.unquote(y)
            for x, y in results["qsd+"].items()
        }

        # Set our token if found as an argument
        if "token" in results["qsd"] and len(results["qsd"]["token"]):
            results["token"] = NotifySynology.unquote(results["qsd"]["token"])

        else:
            # Get unquoted entries
            entries = NotifySynology.split_path(results["fullpath"])
            if entries:
                # Pop the first element
                results["token"] = entries.pop(0)

                # Update our fullpath to not include our token
                results["fullpath"] = results["fullpath"][
                    len(results["token"]) + 1 :
                ]

        # Set upload/file_url if not otherwise set
        if "file_url" in results["qsd"] and len(results["qsd"]["file_url"]):
            results["file_url"] = NotifySynology.unquote(
                results["qsd"]["file_url"]
            )

        return results
