# 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.

import base64
import hashlib
import hmac
from json import dumps
import re
import time

import requests

from ..common import NotifyFormat, NotifyType
from ..locale import gettext_lazy as _
from ..url import PrivacyMode
from ..utils.parse import parse_list, validate_regex
from .base import NotifyBase

# Register at https://dingtalk.com
#   - Download their PC based software as it is the only way you can create
#     a custom robot.  You can create a custom robot per group.  You will
#     be provided an access_token that Apprise will need.

# Syntax:
#  dingtalk://{access_token}/
#  dingtalk://{access_token}/{optional_phone_no}
#  dingtalk://{access_token}/{phone_no_1}/{phone_no_2}/{phone_no_N/

# Some Phone Number Detection
IS_PHONE_NO = re.compile(r"^\+?(?P<phone>[0-9\s)(+-]+)\s*$")


class NotifyDingTalk(NotifyBase):
    """A wrapper for DingTalk Notifications."""

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

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

    # All notification requests are secure
    secure_protocol = "dingtalk"

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

    # DingTalk API
    notify_url = "https://oapi.dingtalk.com/robot/send?access_token={token}"

    # Do not set title_maxlen as it is set in a property value below
    # since the length varies depending if we are doing a markdown
    # based message or a text based one.
    # title_maxlen = see below @propery defined

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

    # Define our template tokens
    template_tokens = dict(
        NotifyBase.template_tokens,
        **{
            "token": {
                "name": _("Token"),
                "type": "string",
                "private": True,
                "required": True,
                "regex": (r"^[a-z0-9]+$", "i"),
            },
            "secret": {
                "name": _("Secret"),
                "type": "string",
                "private": True,
                "regex": (r"^[a-z0-9]+$", "i"),
            },
            "target_phone_no": {
                "name": _("Target Phone No"),
                "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",
            },
            "token": {
                "alias_of": "token",
            },
            "secret": {
                "alias_of": "secret",
            },
        },
    )

    def __init__(self, token, targets=None, secret=None, **kwargs):
        """Initialize DingTalk Object."""
        super().__init__(**kwargs)

        # Secret Key (associated with project)
        self.token = validate_regex(
            token, *self.template_tokens["token"]["regex"]
        )
        if not self.token:
            msg = f"An invalid DingTalk API Token ({token}) was specified."
            self.logger.warning(msg)
            raise TypeError(msg)

        self.secret = None
        if secret:
            self.secret = validate_regex(
                secret, *self.template_tokens["secret"]["regex"]
            )
            if not self.secret:
                msg = f"An invalid DingTalk Secret ({token}) was specified."
                self.logger.warning(msg)
                raise TypeError(msg)

        # Parse our targets
        self.targets = []

        for target in parse_list(targets):
            # Validate targets and drop bad ones:
            result = IS_PHONE_NO.match(target)
            if result:
                # Further check our phone # for it's digit count
                result = "".join(re.findall(r"\d+", result.group("phone")))
                if len(result) < 11 or len(result) > 14:
                    self.logger.warning(
                        f"Dropped invalid phone # ({target}) specified.",
                    )
                    continue

                # store valid phone number
                self.targets.append(result)
                continue

            self.logger.warning(
                f"Dropped invalid phone # ({target}) specified.",
            )

        return

    def get_signature(self):
        """Calculates time-based signature so that we can send arbitrary
        messages."""
        timestamp = str(round(time.time() * 1000))
        secret_enc = self.secret.encode("utf-8")
        str_to_sign_enc = f"{timestamp}\n{self.secret}".encode()
        hmac_code = hmac.new(
            secret_enc, str_to_sign_enc, digestmod=hashlib.sha256
        ).digest()
        signature = NotifyDingTalk.quote(base64.b64encode(hmac_code), safe="")
        return timestamp, signature

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

        payload = {
            "msgtype": "text",
            "at": {
                "atMobiles": self.targets,
                "isAtAll": False,
            },
        }

        if self.notify_format == NotifyFormat.MARKDOWN:
            payload["markdown"] = {
                "title": title,
                "text": body,
            }

        else:
            payload["text"] = {
                "content": body,
            }

        # Our Notification URL
        notify_url = self.notify_url.format(token=self.token)

        params = None
        if self.secret:
            timestamp, signature = self.get_signature()
            params = {
                "timestamp": timestamp,
                "sign": signature,
            }

        # Prepare our headers
        headers = {
            "User-Agent": self.app_id,
            "Content-Type": "application/json",
        }

        # Some Debug Logging
        self.logger.debug(
            "DingTalk URL:"
            f" {notify_url} (cert_verify={self.verify_certificate})"
        )
        self.logger.debug(f"DingTalk Payload: {payload}")

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

        try:
            r = requests.post(
                notify_url,
                data=dumps(payload),
                headers=headers,
                params=params,
                verify=self.verify_certificate,
                timeout=self.request_timeout,
            )

            if r.status_code != requests.codes.ok:
                # We had a problem
                status_str = NotifyDingTalk.http_response_code_lookup(
                    r.status_code
                )

                self.logger.warning(
                    "Failed to send DingTalk notification: "
                    "{}{}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

            else:
                self.logger.info("Sent DingTalk notification.")

        except requests.RequestException as e:
            self.logger.warning(
                "A Connection error occured sending DingTalk notification."
            )
            self.logger.debug(f"Socket Exception: {e!s}")
            return False

        return True

    @property
    def title_maxlen(self):
        """The title isn't used when not in markdown mode."""
        return (
            NotifyBase.title_maxlen
            if self.notify_format == NotifyFormat.MARKDOWN
            else 0
        )

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

        # Define any arguments set
        args = {
            "format": self.notify_format,
            "overflow": self.overflow_mode,
            "verify": "yes" if self.verify_certificate else "no",
        }

        return "{schema}://{secret}{token}/{targets}/?{args}".format(
            schema=self.secure_protocol,
            secret=(
                ""
                if not self.secret
                else "{}@".format(
                    self.pprint(
                        self.secret, privacy, mode=PrivacyMode.Secret, safe=""
                    )
                )
            ),
            token=self.pprint(self.token, privacy, safe=""),
            targets="/".join(
                [NotifyDingTalk.quote(x, safe="") for x in self.targets]
            ),
            args=NotifyDingTalk.urlencode(args),
        )

    @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.secret, self.token)

    def __len__(self):
        """Returns the number of targets associated with this notification."""
        targets = len(self.targets)
        return targets if targets > 0 else 1

    @staticmethod
    def parse_url(url):
        """Parses the URL and returns enough arguments that can allow us to
        substantiate 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

        results["token"] = NotifyDingTalk.unquote(results["host"])

        # if a user has been defined, use it's value as the secret
        if results.get("user"):
            results["secret"] = results.get("user")

        # Get our entries; split_path() looks after unquoting content for us
        # by default
        results["targets"] = NotifyDingTalk.split_path(results["fullpath"])

        # Support the use of the `token` keyword argument
        if "token" in results["qsd"] and len(results["qsd"]["token"]):
            results["token"] = NotifyDingTalk.unquote(results["qsd"]["token"])

        # Support the use of the `secret` keyword argument
        if "secret" in results["qsd"] and len(results["qsd"]["secret"]):
            results["secret"] = NotifyDingTalk.unquote(
                results["qsd"]["secret"]
            )

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

        return results
