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import datetime

from dateutil.relativedelta import relativedelta
from pydantic import (
    BaseModel,
    computed_field,
    Field,
    ValidationInfo,
    model_validator,
    ConfigDict
)
import pandas as pd


class UKPassportSchema(BaseModel):
    model_config = ConfigDict(arbitrary_types_allowed=True)
    full_name: str | None = Field(
        default=None,
        description="Applicant's full name. Must consist of at least 2 words, have length gte 2 & lte 61",
        examples=["Jodie Pippa"],
    )  # , min_length=2, max_length=61)
    expiry_date: datetime.date | None = Field(
        default=None,
        description="The passport's expiry date in YYYY-MM-DD format",
        examples=["2028-06-01"],
    )

    full_name_err_msgs: str | None = None
    expiry_date_err_msgs: str | None = None
    validation_policy_status_df: pd.DataFrame = pd.DataFrame(
        columns=["Policy", "Value", "Status", "Message"])

    @model_validator(mode="after")
    def validate_expiry_date(cls, values):
        try:
            err_msgs = list()
            expiry_date_val = values.expiry_date
            if not expiry_date_val:
                err_msgs.append("Expiry date must be present")
                values.validation_policy_status_df.loc[len(
                    values.validation_policy_status_df)] = ["Expiry date must be present", values.expiry_date, False, "Expiry date is not present"]
            else:
                values.validation_policy_status_df.loc[len(
                    values.validation_policy_status_df)] = ["Expiry date must be present", values.expiry_date, True, "Expiry date is present"]
            if expiry_date_val < datetime.date.today() + relativedelta(years=1):
                # raise ValueError("Provided passport expires within 1 year")
                err_msgs.append("Provided passport expires within 1 year")
                values.validation_policy_status_df.loc[
                    len(values.validation_policy_status_df)
                ] = [
                    "Provided passport expiry should be more than 1 year",
                    values.expiry_date,
                    False,
                    "Provided passport expires within 1 year &/or is expired",
                ]
            else:
                values.validation_policy_status_df.loc[
                    len(values.validation_policy_status_df)
                ] = [
                    "Provided passport expiry should be more than 1 year",
                    values.expiry_date,
                    True,
                    "Provided passport does not expire within 1 year",
                ]

            values.expiry_date_err_msgs = ", ".join(
                err_msgs) if err_msgs else None
            return values
        except Exception as e:
            raise
            # if not values.expiry_date_err_msgs:
            #     values.expiry_date_err_msgs = "Provided passport expires within 1 year"
            # else:
            #     values.expiry_date_err_msgs = f"{values.expiry_date_err_msgs}, Provided passport expires within 1 year"
        # if not values.expiry_date_err_msgs:
        #     values.expiry_date_err_msgs = None
        # return values

    @model_validator(mode="after")
    def validate_full_name(cls, values, info: ValidationInfo):
        """Match applicant's full name against provided name (case-insensitive)"""
        try:
            err_msgs = []
            expected = (
                info.context.get("application_summary_full_name")
                if info.context
                else None
            )
            full_name_val = values.full_name
            if not full_name_val:
                err_msgs.append("Applicant's full name not present")
                values.validation_policy_status_df.loc[len(
                    values.validation_policy_status_df)] = ["Applicant's full name should be present", full_name_val, False, "Applicant's full name not present"]
            else:
                values.validation_policy_status_df.loc[len(
                    values.validation_policy_status_df)] = ["Applicant's full name should be present", full_name_val, True, "Applicant's full name is present"]

            full_name_val_len = 0
            if full_name_val:
                full_name_val_len = len(full_name_val)
            if not full_name_val and not (
                full_name_val_len >= 2 and full_name_val_len <= 61
            ):
                err_msgs.append(
                    "Full name must have a length of at least 2 & at most 61"
                )
                values.validation_policy_status_df.loc[len(
                    values.validation_policy_status_df)] = [ "Full name must have a length of at least 2 & at most 61", full_name_val_len, False,  "Full name does not have a length of at least 2 & at most 61"]
            else:
                values.validation_policy_status_df.loc[len(
                    values.validation_policy_status_df)] = [ "Full name must have a length of at least 2 & at most 61", full_name_val_len, True,  "Full name has a length of at least 2 & at most 61"]


            if (
                not expected
                or not full_name_val
                or full_name_val.lower() != expected.lower()
            ):
                err_msgs.append("Name mismatch with provided value")
                values.validation_policy_status_df.loc[len(
                    values.validation_policy_status_df)] = ["Name should match with provided value", full_name_val, False,  "Name does not match with provided value"]
            else:
                values.validation_policy_status_df.loc[len(
                    values.validation_policy_status_df)] = ["Name should match with provided value", full_name_val, True,  "Name matches with provided value"]


            if not full_name_val or len(full_name_val.strip().split(" ")) < 2:
                err_msgs.append(
                    "Full name must consist of at least 2 words (first name + last name)"
                )
                values.validation_policy_status_df.loc[len(
                    values.validation_policy_status_df)] = ["Full name must consist of at least 2 words (first name + last name)", len(full_name_val.strip().split(" ")), False,  "Full name does not consist of at least 2 words (first name + last name)"]
            else:
                values.validation_policy_status_df.loc[len(
                    values.validation_policy_status_df)] = ["Full name must consist of at least 2 words (first name + last name)", len(full_name_val.strip().split(" ")), True,  "Full name does consist of at least 2 words (first name + last name)"]


            if err_msgs:
                values.full_name_err_msgs = ", ".join(err_msgs)
            else:
                values.full_name_err_msgs = None

            return values
        except Exception as e:
            # logger.exception(e, exc_info=True)
            # return None
            raise

    @computed_field
    @property
    def is_red_flagged(self) -> bool:
        if self.full_name_err_msgs or self.expiry_date_err_msgs:
            return True
        return False


class UKDrivingLicense(BaseModel):
    model_config = ConfigDict(arbitrary_types_allowed=True)
    full_name: str | None = Field(
        default=None,
        description="Applicant's full name. Must consist of at least 2 words, have length gte 2 & lte 61",
        examples=["Jodie Pippa"],
    )  # , min_length=2, max_length=61)

    full_name_err_msgs: str | None = None
    expiry_date_err_msgs: str | None = None
    validation_policy_status_df: pd.DataFrame = pd.DataFrame(
        columns=["Policy", "Value", "Status", "Message"])

    @model_validator(mode="after")
    def validate_full_name(cls, values, info: ValidationInfo):
        """Match applicant's full name against provided name (case-insensitive)"""
        try:
            err_msgs = []
            expected = (
                info.context.get("application_summary_full_name")
                if info.context
                else None
            )
            full_name_val = values.full_name
            if not full_name_val:
                err_msgs.append("Applicant's full name not present")
                values.validation_policy_status_df.loc[
                    len(values.validation_policy_status_df)
                ] = [
                    "Applicant's full name should be present",
                    full_name_val,
                    False,
                    "Applicant's full name not present",
                ]
            else:
                values.validation_policy_status_df.loc[
                    len(values.validation_policy_status_df)
                ] = [
                    "Applicant's full name should be present",
                    full_name_val,
                    True,
                    "Applicant's full name is present",
                ]

            full_name_val_len = 0
            if full_name_val:
                full_name_val_len = len(full_name_val)
            if not full_name_val and not (
                full_name_val_len >= 2 and full_name_val_len <= 61
            ):
                err_msgs.append(
                    "Full name must have a length of at least 2 & at most 61"
                )
                values.validation_policy_status_df.loc[
                    len(values.validation_policy_status_df)
                ] = [
                    "Full name must have a length of at least 2 & at most 61",
                    full_name_val_len,
                    False,
                    "Full name does not have a length of at least 2 & at most 61",
                ]
            else:
                values.validation_policy_status_df.loc[
                    len(values.validation_policy_status_df)
                ] = [
                    "Full name must have a length of at least 2 & at most 61",
                    full_name_val_len,
                    True,
                    "Full name has a length of at least 2 & at most 61",
                ]

            if (
                not expected
                or not full_name_val
                or full_name_val.lower() != expected.lower()
            ):
                err_msgs.append("Name mismatch with provided value")
                values.validation_policy_status_df.loc[
                    len(values.validation_policy_status_df)
                ] = [
                    "Name should match with provided value",
                    full_name_val,
                    False,
                    "Name does not match with provided value",
                ]
            else:
                values.validation_policy_status_df.loc[
                    len(values.validation_policy_status_df)
                ] = [
                    "Name should match with provided value",
                    full_name_val,
                    True,
                    "Name matches with provided value",
                ]

            if not full_name_val or len(full_name_val.strip().split(" ")) < 2:
                err_msgs.append(
                    "Full name must consist of at least 2 words (first name + last name)"
                )
                values.validation_policy_status_df.loc[
                    len(values.validation_policy_status_df)
                ] = [
                    "Full name must consist of at least 2 words (first name + last name)",
                    len(full_name_val.strip().split(" ")),
                    False,
                    "Full name does not consist of at least 2 words (first name + last name)",
                ]
            else:
                values.validation_policy_status_df.loc[
                    len(values.validation_policy_status_df)
                ] = [
                    "Full name must consist of at least 2 words (first name + last name)",
                    len(full_name_val.strip().split(" ")),
                    True,
                    "Full name does consist of at least 2 words (first name + last name)",
                ]

            if err_msgs:
                values.full_name_err_msgs = ", ".join(err_msgs)
            else:
                values.full_name_err_msgs = None

            return values
        except Exception as e:
            # logger.exception(e, exc_info=True)
            # return None
            raise

    @computed_field
    @property
    def is_red_flagged(self) -> bool:
        if self.full_name_err_msgs or self.expiry_date_err_msgs:
            return True
        return False