"""Pydantic models for Lambda event validation."""

from typing import Literal, Optional

from pydantic import BaseModel, ConfigDict, Field

from src.enums import EventType, TargetType, UploadType


class AdjustmentFileInitializeEventData(BaseModel):
    """Metadata section for AdjustmentFileInitializeEvent."""

    model_config = ConfigDict(extra='ignore')

    upload_type: Literal[UploadType.ADJUSTMENTS] = Field(
        ..., description='Upload type (e.g., adjustments)'
    )


class AdjustmentFileInitializeEventMetadata(BaseModel):
    """Metadata section for AdjustmentFileInitializeEvent."""

    model_config = ConfigDict(extra='ignore')

    correlation_id: Optional[str] = Field(
        None, description='Correlation ID for tracing'
    )
    target_id: int = Field(..., description='Primary key of target entity')
    target_type: Literal[TargetType.FILE_UPLOAD] = Field(
        ..., description='Entity type (e.g., file_upload)'
    )


class AdjustmentFileInitializeEventDetail(BaseModel):
    """Event detail section for AdjustmentFileInitializeEvent."""

    model_config = ConfigDict(extra='ignore')

    metadata: AdjustmentFileInitializeEventMetadata = Field(
        ..., description='Event metadata'
    )
    data: AdjustmentFileInitializeEventData = Field(
        ..., description='Event business data'
    )


class AdjustmentFileInitializeEvent(BaseModel):
    """Lambda event for adjustment file initialization."""

    model_config = ConfigDict(extra='ignore', populate_by_name=True)

    detail_type: Literal[EventType.FILE_UPLOAD_COMPLETED] = Field(
        ...,
        description='Event type (e.g., file_upload.completed)',
        alias='detail-type',
    )
    detail: AdjustmentFileInitializeEventDetail = Field(
        ..., description='Event details'
    )