"""
Pydantic model for get_o11y_delta_path tool input validation.

Validates cluster scope parameters for GS API lookup.
"""

from pydantic import BaseModel, Field, field_validator


class GetO11yDeltaPathRequest(BaseModel):
    """Input model for resolving Observability Delta Lake table paths."""

    cluster_id: str = Field(
        ...,
        description="TiDB Cloud cluster ID (applicationID)",
    )
    env: str = Field(
        ...,
        description="Environment name used in biz_type resolution (e.g. prod, staging, dev)",
    )
    deploy_type: str = Field(
        ...,
        description=(
            "Cluster deploy type used in biz_type resolution "
            "(dedicated, premium, resource_pool, starter, essential)"
        ),
    )

    @field_validator("env", "deploy_type", mode="before")
    @classmethod
    def normalize_scope_text(cls, v: str) -> str:
        return v.strip().lower()

    @field_validator("cluster_id", mode="before")
    @classmethod
    def normalize_cluster_id(cls, v: object) -> str:
        if not isinstance(v, str):
            raise ValueError("cluster_id must be a string. Quote numeric IDs explicitly.")
        return str(v).strip()