from typing import Any

from pydantic import BaseModel, Field


class ReadonlyQueryRequest(BaseModel):
    """Readonly SQL query request for the legacy MySQL connection."""

    sql: str = Field(..., description="Readonly SELECT statement.")
    params: dict[str, Any] = Field(default_factory=dict)
    limit: int = Field(default=100, ge=1, le=500)


class QueryResult(BaseModel):
    """Tabular query result returned as JSON rows."""

    columns: list[str]
    rows: list[dict[str, Any]]
    row_count: int


class LegacyProjectRecord(BaseModel):
    """Raw project row from the legacy project system."""

    data: dict[str, Any]


class LegacyProjectSyncRequest(BaseModel):
    """Request body for syncing legacy projects into the internal ledger."""

    source_query: str | None = Field(
        default=None,
        description="Optional SELECT query for project sync.",
    )
    field_map: dict[str, str] = Field(
        default_factory=dict,
        description=(
            "Map internal project fields to legacy row fields, "
            "e.g. {'name': 'project_name'}."
        ),
    )
    limit: int = Field(default=100, ge=1, le=500)
    dry_run: bool = True
    actor: str = "api"


class LegacyProjectSyncResult(BaseModel):
    """Summary of a legacy project sync operation."""

    dry_run: bool
    created: int
    updated: int
    skipped: int
    sync_run_code: str | None = None
    items: list[dict[str, Any]]