"""

    AUTHOR:

        Khushal P Soonderji

    DATE:

        Tuesday, 21st Jan., 2025.

    OBJECTIVE:

        To provide a structure to receive API calls to send chat messages from various third-party clients. At the time
        of creating this file we are starting with Nimbus IT's unofficial WhatsApp services. We intend to add Telegram's
        official APIs soon after.

    REFERENCES:

        N/A

    DOWNLOADS:

        N/A

"""


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                                   IMPORT                                                      ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


# To make sibling directories accessible for imports:
import sys
sys.path.append(".")
sys.path.append("..")

# For making data behaviour_models:
from pydantic import BaseModel, Field, field_validator, AwareDatetime, PastDatetime
from typing import Optional, Literal, Union, List, Any

# My utils:
from utils_v2.string import regex
from utils_v2.date_time import date_time

# Models:
from models.core.message import CoreMessageModel
from utils_v2.sms.models.sms_message import SentSMSMessageModel

# To work with date and time:
import datetime

# To work with MongoDB:
from bson.objectid import ObjectId


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                           MACROS / ONE-TIME INIT                                              ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


# RegEx Patterns:
REGEX_SESSION_TOKEN = r"^[a-f0-9]{8}-[a-f0-9]{4}-[1-5][a-f0-9]{3}-[89ab][a-f0-9]{3}-[a-f0-9]{12}$"


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                                VARIABLES                                                      ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


# --- Nothing Yet


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                                  FUNCTIONS                                                    ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


class NimbusWhatsAppMessage(BaseModel):

    recipientNo: str = Field(
        description = "The phone no. of the target recipient(s)",
        # pattern = r"\+?\d{0,3}\s*\(?\d{3}\)?[-.\s]?\d{3}[-.\s]?\d{4}",
        frozen = True
    )

    message: str = Field(
        description = "The actual text that you want to send.",
        min_length = 1,
        frozen = True
    )

    pdfUrl: str | None = Field(
        description = "A PDF file to send with your message.",
        frozen = True,
        default = None
    )

    image0Url: str | None = Field(
        description = "An image file to send with your message.",
        frozen = True,
        default = None
    )

    image1Url: str | None = Field(
        description = "An image file to send with your message.",
        frozen = True,
        default = None
    )

    scheduleTs: AwareDatetime | None = Field(
        description = "The time (UTC) at which the message needs to be sent. Null for immediate delivery.",
        frozen = True,
        default = None
    )

    # ┏┓    ┏•
    # ┃ ┏┓┏┓╋┓┏┓
    # ┗┛┗┛┛┗┛┗┗┫
    #          ┛

    class Config:
        extra = "forbid"

    # ┓┏  ┓• ┓   •
    # ┃┃┏┓┃┓┏┫┏┓╋┓┏┓┏┓
    # ┗┛┗┻┗┗┗┻┗┻┗┗┗┛┛┗

    @field_validator("scheduleTs", mode = "before")
    def to_datetime(cls, value):
        if not isinstance(value, datetime.datetime):
            value = date_time.parse_date_time(
                input_value = value,
                date_formats = [
                    "%Y%m%d",
                    "%Y-%m-%d",
                    "%Y-%m-%d %H:%M:%S",
                    "%Y-%m-%d %H:%M:%S%z",
                    "%Y-%m-%dT%H:%M:%S",
                    "%Y-%m-%dT%H:%M:%S%z"
                ]
            )
            if value:
                value = date_time.as_if_timezone(value, date_time.TIMEZONE_UTC)
                value = date_time.to_timezone(value, date_time.TIMEZONE_IST)
        return value

    @field_validator("recipientNo", mode = "before")
    def validate_contact_nos(cls, value):
        value = regex.replace(text = str(value), pattern = r"[^\d]", substitute_text = "")
        if len(value) > 10: value = regex.replace(text = str(value), pattern = r"^(91)", substitute_text = "")
        value = regex.find_first(text = str(value), pattern = r"^[\d]{10}")
        return value


# ---------------------------------------------------------------------------------------------------------------------


class ChatSendOneResult(BaseModel):

    success: bool = Field(
        description = "Whether, or not, the chat message was successfully sent.",
        default = False
    )

    message: str | None = Field(
        description = "A brief message to summarize the result of the process.",
        default = None
    )

    chatMessage: CoreMessageModel = Field(
        description = "The actual data of the chat message.",
        default = None
    )

    # ┏┓    ┏•
    # ┃ ┏┓┏┓╋┓┏┓
    # ┗┛┗┛┛┗┛┗┗┫
    #          ┛

    class Config:
        extra = "forbid"


# ---------------------------------------------------------------------------------------------------------------------


class ChatSendManyResults(BaseModel):

    totalCount: int = Field(
        description = "The total no. of messages that were attempted.",
        default = 0
    )

    successCount: int = Field(
        description = "The no. of chat messages that were successfully sent.",
        default = 0
    )

    failureCount: int = Field(
        description = "The no. of chat messages that were NOT sent.",
        default = 0
    )

    message: str = Field(
        description = "A brief message to summarize the results of the process.",
        default = None
    )

    chatMessages: List[CoreMessageModel] = Field(
        description = "The actual data of the chat messages.",
        default = []
    )

    # ┏┓    ┏•
    # ┃ ┏┓┏┓╋┓┏┓
    # ┗┛┗┛┛┗┛┗┗┫
    #          ┛

    class Config:
        extra = "forbid"


#   *****************************************************************************************************************
#  *****                                                                                                          ****
# ***                                               MAIN PROGRAM                                                    ***
#  *****                                                                                                          ****
#   *****************************************************************************************************************


if __name__ == "__main__":

    from utils_v2.string import json

    my_request = SMSSendRequestData(
        tokenId = "670f580d7cda4ebc1adc3444",
        message = NimbusSMSIndiaMessage(
            recipientNo = "+.9.1    --->     93261 3642fgnn193261",
            text = "Hello, Nimbus!",
            templateId = "12345678"
        )
    )

    print("NIMBUS SMS API MODEL:", json.to_string(my_request.model_dump(), default = str))
