"""

    AUTHOR:

        Khushal P Soonderji

    DATE:

        Thursday, 9th Jan., 2025.

    OBJECTIVE:

        To provide data models for NSE's calendar events.

    REFERENCES:

        N/A

    DOWNLOADS:

        N/A

"""


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# ***                                                   IMPORT                                                      ***
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# 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, computed_field
from typing import Optional, Literal, List

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

# To work with date and time:
import datetime


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# ***                                           MACROS / ONE-TIME INIT                                              ***
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# --- Nothing Yet


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# ***                                                VARIABLES                                                      ***
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# --- Nothing Yet


#   *****************************************************************************************************************
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# ***                                                  FUNCTIONS                                                    ***
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class NSEHoliday(BaseModel):

    scrapeTs: AwareDatetime = Field(
        description = "The time (UTC) at which this this data was scraped.",
        frozen = True,
        default_factory = lambda: date_time.get_current_utc_date_time(as_string = False)
    )

    ts: AwareDatetime = Field(
        description = "The date which is to be recorded as a holiday.",
        frozen = True
    )

    tz: str = Field(
        description = "The timezone in which the date has to be interpreted.",
        frozen = True,
        default = "Asia/Kolkata"
    )

    event: str = Field(
        description = "The name of the event/occasion.",
        frozen = True
    )

    type: List[str] = Field(
        description = "One or more types of holiday for this event.",
        frozen = True,
        examples = ["CBM", "CD", "CM", "CMOT", "COM", "FO", "IRD", "MF", "NDM", "NTRP", "SLBS"]
    )

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

    class Config:
        extra = "ignore"

    # ┏┓       ┏┓             ┓  ┏┓•  ┓ ┓
    # ┣┫┓┏╋┏┓━━┃ ┏┓┏┳┓┏┓┓┏╋┏┓┏┫  ┣ ┓┏┓┃┏┫┏
    # ┛┗┗┻┗┗┛  ┗┛┗┛┛┗┗┣┛┗┻┗┗ ┗┻  ┻ ┗┗ ┗┗┻┛
    #                 ┛

    @computed_field
    def year(self) -> int:
        return self.ts.year

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

    @field_validator("ts", "scrapeTs", mode = "before")
    def parse_date_time(cls, value):
        if isinstance(value, datetime.datetime):
            value = date_time.to_timezone(value, date_time.TIMEZONE_UTC)
        return value

    # ┏┓           ┏┓
    # ┃ ┓┏┏╋┏┓┏┳┓  ┣ ┓┏┏┓┏┏
    # ┗┛┗┻┛┗┗┛┛┗┗  ┻ ┗┻┛┗┗┛

    def to_json(self) -> dict:
        return {
            "event": self.event,
            "ts": self.ts.timestamp(),
            "tz": self.tz,
            "type": self.type
        }


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


class NSECorporateEvent(BaseModel):

    scrapeTs: AwareDatetime = Field(
        description = "The time (UTC) at which this this data was scraped.",
        frozen = True,
        default_factory = lambda: date_time.get_current_utc_date_time(as_string = False)
    )

    kind: str | None = Field(
        description = "The type of 'index'.",
        frozen = True,
        default = None
    )

    symbol: str = Field(
        description = "The trading symbol of the listed entity.",
        frozen = True
    )

    name: str = Field(
        description = "The full name of the listed entity.",
        frozen = True
    )

    ts: AwareDatetime = Field(
        description = "The date (UTC) of the corporate event.",
        frozen = True
    )

    tz: str = Field(
        description = "The timezone in which the date has to be interpreted.",
        frozen = True,
        default = "Asia/Kolkata"
    )

    purpose: str = Field(
        description = "The type of the event.",
        frozen = True
    )

    description: str = Field(
        description = "A brief description of the event.",
        frozen = True
    )

    attachment: str | None = Field(
        description = "Any file attachment with the event announcement.",
        frozen = True,
        default = None
    )

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

    class Config:
        extra = "ignore"

    # ┏┓       ┏┓             ┓  ┏┓•  ┓ ┓
    # ┣┫┓┏╋┏┓━━┃ ┏┓┏┳┓┏┓┓┏╋┏┓┏┫  ┣ ┓┏┓┃┏┫┏
    # ┛┗┗┻┗┗┛  ┗┛┗┛┛┗┗┣┛┗┻┗┗ ┗┻  ┻ ┗┗ ┗┗┻┛
    #                 ┛

    pass

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

    @field_validator("ts", "scrapeTs", mode = "before")
    def parse_date_time(cls, value):
        if isinstance(value, datetime.datetime):
            value = date_time.to_timezone(value, date_time.TIMEZONE_UTC)
        return value

    # ┏┓           ┏┓
    # ┃ ┓┏┏╋┏┓┏┳┓  ┣ ┓┏┏┓┏┏
    # ┗┛┗┻┛┗┗┛┛┗┗  ┻ ┗┻┛┗┗┛

    def to_json(self) -> dict:
        return {
            "symbol": self.symbol,
            "name": self.name,
            "kind": self.kind,
            "purpose": self.purpose,
            "description": self.description,
            "attachment": self.attachment,
            "ts": self.ts.timestamp(),
            "tz": self.tz
        }


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


class NSECorporateAction(BaseModel):

    scrapeTs: AwareDatetime = Field(
        description = "The time (UTC) at which this this data was scraped.",
        frozen = True,
        default_factory = lambda: date_time.get_current_utc_date_time(as_string = False)
    )

    kind: str | None = Field(
        description = "The type of 'index'.",
        frozen = True,
        default = None
    )

    symbol: str = Field(
        description = "The trading symbol of the listed entity.",
        frozen = True
    )

    name: str = Field(
        description = "The full name of the listed entity.",
        frozen = True
    )

    isin: str = Field(
        description = "The ISIN code of the listed entity.",
        frozen = True
    )

    series: str = Field(
        description = "The series code of the listed entity.",
        frozen = True
    )

    exTs: AwareDatetime | None = Field(
        description = "The ex-date/ex-dividend-date (UTC) ",
        frozen = True
    )

    recTs: AwareDatetime | None = Field(
        description = "The record date (UTC).",
        frozen = True
    )

    bcStartTs: AwareDatetime | None = Field(
        description = "The book-closure start date (UTC).",
        frozen = True
    )

    bcEndTs: AwareDatetime | None = Field(
        description = "The book-closure end date (UTC).",
        frozen = True
    )

    ndStartTs: AwareDatetime | None = Field(
        description = "The notice-date (start) date (UTC).",
        frozen = True
    )

    ndEndTs: AwareDatetime | None = Field(
        description = "The notice-date (end) date (UTC).",
        frozen = True
    )

    caBroadcastTs: AwareDatetime | None = Field(
        description = "The corporate-action broadcast date (UTC).",
        frozen = True
    )

    tz: str = Field(
        description = "The timezone in which all dates have to be interpreted.",
        frozen = True,
        default = "Asia/Kolkata"
    )

    action: str = Field(
        description = "The subject of the corporate action.",
        frozen = True
    )

    faceVal: float | int = Field(
        description = "The face-value of the share of the entity.",
        frozen = True
    )

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

    class Config:
        extra = "ignore"

    # ┏┓       ┏┓             ┓  ┏┓•  ┓ ┓
    # ┣┫┓┏╋┏┓━━┃ ┏┓┏┳┓┏┓┓┏╋┏┓┏┫  ┣ ┓┏┓┃┏┫┏
    # ┛┗┗┻┗┗┛  ┗┛┗┛┛┗┗┣┛┗┻┗┗ ┗┻  ┻ ┗┗ ┗┗┻┛
    #                 ┛

    pass

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

    @field_validator(
        "scrapeTs",
        "exTs", "recTs",
        "bcStartTs", "bcEndTs",
        "ndStartTs", "ndEndTs",
        "caBroadcastTs",
        mode = "before"
    )
    def parse_date_time(cls, value):
        if isinstance(value, datetime.datetime):
            value = date_time.to_timezone(value, date_time.TIMEZONE_UTC)
        return value

    # ┏┓           ┏┓
    # ┃ ┓┏┏╋┏┓┏┳┓  ┣ ┓┏┏┓┏┏
    # ┗┛┗┻┛┗┗┛┛┗┗  ┻ ┗┻┛┗┗┛

    def to_json(self) -> dict:
        return {
            "symbol": self.symbol,
            "name": self.name,
            "isin": self.isin,
            "series": self.series,
            "kind": self.kind,
            "action": self.action,
            "faceVal": self.faceVal,
            "exTs": self.exTs.timestamp() if isinstance(self.exTs, datetime.datetime) else self.exTs,
            "recTs": self.recTs.timestamp()if isinstance(self.recTs, datetime.datetime) else self.recTs,
            "bcStartTs": self.bcStartTs.timestamp()if isinstance(self.bcStartTs, datetime.datetime) else self.bcStartTs,
            "bcEndTs": self.bcEndTs.timestamp()if isinstance(self.bcEndTs, datetime.datetime) else self.bcEndTs,
            "ndStartTs": self.ndStartTs.timestamp()if isinstance(self.ndStartTs, datetime.datetime) else self.ndStartTs,
            "ndEndTs": self.ndEndTs.timestamp()if isinstance(self.ndEndTs, datetime.datetime) else self.ndEndTs,
            "caBroadcastTs": self.caBroadcastTs.timestamp()if isinstance(self.caBroadcastTs, datetime.datetime) else self.caBroadcastTs,
            "tz": self.tz
        }


#   *****************************************************************************************************************
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# ***                                               MAIN PROGRAM                                                    ***
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if __name__ == "__main__":

    pass