# 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, loads

import requests

from ..attachment.base import AttachBase
from ..common import NotifyType
from ..locale import gettext_lazy as _
from ..utils.parse import is_email, parse_list, validate_regex
from .base import NotifyBase

# Flag used as a placeholder to sending to all devices
PUSHBULLET_SEND_TO_ALL = "ALL_DEVICES"

# Provide some known codes Pushbullet uses and what they translate to:
PUSHBULLET_HTTP_ERROR_MAP = {
    401: "Unauthorized - Invalid Token.",
}


class NotifyPushBullet(NotifyBase):
    """A wrapper for PushBullet Notifications."""

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

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

    # The default secure protocol
    secure_protocol = "pbul"

    # Allow 50 requests per minute (Tier 2).
    # 60/50 = 0.2
    request_rate_per_sec = 1.2

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

    # PushBullet uses the http protocol with JSON requests
    notify_url = "https://api.pushbullet.com/v2/{}"

    # Support attachments
    attachment_support = True

    # Define object templates
    templates = (
        "{schema}://{accesstoken}",
        "{schema}://{accesstoken}/{targets}",
    )

    # Define our template tokens
    template_tokens = dict(
        NotifyBase.template_tokens,
        **{
            "accesstoken": {
                "name": _("Access Token"),
                "type": "string",
                "private": True,
                "required": True,
            },
            "target_device": {
                "name": _("Target Device"),
                "type": "string",
                "map_to": "targets",
            },
            "target_channel": {
                "name": _("Target Channel"),
                "type": "string",
                "prefix": "#",
                "map_to": "targets",
            },
            "target_email": {
                "name": _("Target Email"),
                "type": "string",
                "map_to": "targets",
            },
            "targets": {
                "name": _("Targets"),
                "type": "list:string",
            },
        },
    )

    # Define our template arguments
    template_args = dict(
        NotifyBase.template_args,
        **{
            "to": {
                "alias_of": "targets",
            },
        },
    )

    def __init__(self, accesstoken, targets=None, **kwargs):
        """Initialize PushBullet Object."""
        super().__init__(**kwargs)

        # Access Token (associated with project)
        self.accesstoken = validate_regex(accesstoken)
        if not self.accesstoken:
            msg = (
                "An invalid PushBullet Access Token "
                f"({accesstoken}) was specified."
            )
            self.logger.warning(msg)
            raise TypeError(msg)

        self.targets = parse_list(targets)
        if len(self.targets) == 0:
            self.targets = (PUSHBULLET_SEND_TO_ALL,)

        return

    def send(
        self,
        body,
        title="",
        notify_type=NotifyType.INFO,
        attach=None,
        **kwargs,
    ):
        """Perform PushBullet Notification."""

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

        # Build a list of our attachments
        attachments = []

        if attach and self.attachment_support:
            # We need to upload our payload first so that we can source it
            # in remaining messages
            for no, attachment in enumerate(attach, start=1):

                # Perform some simple error checking
                if not attachment:
                    # We could not access the attachment
                    self.logger.error(
                        "Could not access attachment"
                        f" {attachment.url(privacy=True)}."
                    )
                    return False

                self.logger.debug(
                    "Preparing PushBullet attachment"
                    f" {attachment.url(privacy=True)}"
                )

                # prepare payload
                payload = {
                    "file_name": (
                        attachment.name
                        if attachment.name
                        else f"file{no:03}.dat"
                    ),
                    "file_type": attachment.mimetype,
                }
                # First thing we need to do is make a request so that we can
                # get a URL to post our request to.
                # see: https://docs.pushbullet.com/#upload-request
                okay, response = self._send(
                    self.notify_url.format("upload-request"), payload
                )
                if not okay:
                    # We can't post our attachment
                    return False

                # If we get here, our output will look something like this:
                # {
                #   "file_name": "cat.jpg",
                #   "file_type": "image/jpeg",
                #   "file_url": "https://dl.pushb.com/abc/cat.jpg",
                #   "upload_url": "https://upload.pushbullet.com/abcd123"
                # }

                # - The file_url is where the file will be available after it
                #    is uploaded.
                # - The upload_url is where to POST the file to. The file must
                #    be posted using multipart/form-data encoding.

                # Prepare our attachment payload; we'll use this if we
                # successfully upload the content below for later on.
                try:
                    # By placing this in a try/except block we can validate
                    # our response at the same time as preparing our payload
                    payload = {
                        # PushBullet v2/pushes file type:
                        "type": "file",
                        "file_name": response["file_name"],
                        "file_type": response["file_type"],
                        "file_url": response["file_url"],
                    }

                    if response["file_type"].startswith("image/"):
                        # Allow image to be displayed inline (if image type)
                        payload["image_url"] = response["file_url"]

                    upload_url = response["upload_url"]

                except (KeyError, TypeError):
                    # A method of verifying our content exists
                    return False

                okay, response = self._send(upload_url, attachment)
                if not okay:
                    # We can't post our attachment
                    return False

                # Save our pre-prepared payload for attachment posting
                attachments.append(payload)

        # Create a copy of the targets list
        targets = list(self.targets)
        while len(targets):
            recipient = targets.pop(0)

            # prepare payload
            payload = {
                "type": "note",
                "title": title,
                "body": body,
            }

            # Check if an email was defined
            match = is_email(recipient)
            if match:
                payload["email"] = match["full_email"]
                self.logger.debug(
                    f"PushBullet recipient {recipient} parsed as an email"
                    " address"
                )

            elif recipient is PUSHBULLET_SEND_TO_ALL:
                # Send to all
                pass

            elif recipient[0] == "#":
                payload["channel_tag"] = recipient[1:]
                self.logger.debug(
                    f"PushBullet recipient {recipient} parsed as a channel"
                )

            else:
                payload["device_iden"] = recipient
                self.logger.debug(
                    f"PushBullet recipient {recipient} parsed as a device"
                )

            if body:
                okay, response = self._send(
                    self.notify_url.format("pushes"), payload
                )
                if not okay:
                    has_error = True
                    continue

                self.logger.info(
                    f'Sent PushBullet notification to "{recipient}".'
                )

            for attach_payload in attachments:
                # Send our attachments to our same user (already prepared as
                # our payload object)
                okay, response = self._send(
                    self.notify_url.format("pushes"), attach_payload
                )
                if not okay:
                    has_error = True
                    continue

                self.logger.info(
                    'Sent PushBullet attachment ({}) to "{}".'.format(
                        attach_payload["file_name"], recipient
                    )
                )

        return not has_error

    def _send(self, url, payload, **kwargs):
        """Wrapper to the requests (post) object."""

        headers = {
            "User-Agent": self.app_id,
        }

        # Some default values for our request object to which we'll update
        # depending on what our payload is
        files = None
        data = None

        if not isinstance(payload, AttachBase):
            # Send our payload as a JSON object
            headers["Content-Type"] = "application/json"
            data = dumps(payload) if payload else None

        auth = (self.accesstoken, "")

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

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

        # Default response type
        response = None

        try:
            # Open our attachment path if required:
            if isinstance(payload, AttachBase):
                files = {
                    "file": (
                        payload.name,
                        # file handle is safely closed in `finally`; inline
                        # open is intentional
                        open(payload.path, "rb"),  # noqa: SIM115
                    )}

            r = requests.post(
                url,
                data=data,
                headers=headers,
                files=files,
                auth=auth,
                verify=self.verify_certificate,
                timeout=self.request_timeout,
            )

            try:
                response = loads(r.content)

            except (AttributeError, TypeError, ValueError):
                # ValueError = r.content is Unparsable
                # TypeError = r.content is None
                # AttributeError = r is None

                # Fall back to the existing unparsed value
                response = r.content

            if r.status_code not in (
                requests.codes.ok,
                requests.codes.no_content,
            ):
                # We had a problem
                status_str = NotifyPushBullet.http_response_code_lookup(
                    r.status_code, PUSHBULLET_HTTP_ERROR_MAP
                )

                self.logger.warning(
                    "Failed to deliver payload to PushBullet:"
                    "{}{}error={}.".format(
                        status_str, ", " if status_str else "", r.status_code
                    )
                )

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

                return False, response

            # otherwise we were successful
            return True, response

        except requests.RequestException as e:
            self.logger.warning(
                "A Connection error occurred communicating with PushBullet."
            )
            self.logger.debug(f"Socket Exception: {e!s}")

            return False, response

        except OSError as e:
            self.logger.warning(
                "An I/O error occurred while handling {}.".format(
                    payload.name
                    if isinstance(payload, AttachBase)
                    else payload
                )
            )
            self.logger.debug(f"I/O Exception: {e!s}")
            return False, response

        finally:
            # Close our file (if it's open) stored in the second element
            # of our files tuple (index 1)
            if files:
                files["file"][1].close()

    @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.accesstoken)

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

        # Our URL parameters
        params = self.url_parameters(privacy=privacy, *args, **kwargs)

        targets = "/".join([NotifyPushBullet.quote(x) for x in self.targets])
        if targets == PUSHBULLET_SEND_TO_ALL:
            # keyword is reserved for internal usage only; it's safe to remove
            # it from the recipients list
            targets = ""

        return "{schema}://{accesstoken}/{targets}/?{params}".format(
            schema=self.secure_protocol,
            accesstoken=self.pprint(self.accesstoken, privacy, safe=""),
            targets=targets,
            params=NotifyPushBullet.urlencode(params),
        )

    def __len__(self):
        """Returns the number of targets associated with this notification."""
        return len(self.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

        # Fetch our targets
        results["targets"] = NotifyPushBullet.split_path(results["fullpath"])

        # The 'to' makes it easier to use yaml configuration
        if "to" in results["qsd"] and len(results["qsd"]["to"]):
            results["targets"] += NotifyPushBullet.parse_list(
                results["qsd"]["to"]
            )

        # Setup the token; we store it in Access Token for global
        # plugin consistency with naming conventions
        results["accesstoken"] = NotifyPushBullet.unquote(results["host"])

        return results
