"""Contracts for BR-61..65; no client supplied identity, domain or release state."""
from typing import Literal
from pydantic import BaseModel, ConfigDict, Field

class Input(BaseModel):
    model_config = ConfigDict(extra='forbid')

class QueryInput(Input):
    mode: Literal['filters', 'natural', 'sql'] = 'filters'
    text: str = Field(default='', max_length=4000)
    filters: dict = Field(default_factory=dict)

class SelectionInput(Input):
    preview_id: str = Field(min_length=1, max_length=180)
    selected_ids: list[str] | None = Field(default=None, max_length=240)

class ExtractionInput(Input):
    project_id: str = Field(min_length=1, max_length=180)
    selection_id: str = Field(min_length=1, max_length=180)
    kind: Literal['skill', 'rule_set']
    requirement: str = Field(default='', max_length=2000)

class PackageFile(Input):
    path: str = Field(min_length=1, max_length=512)
    content_base64: str = Field(max_length=2800000)

class PackageInput(Input):
    project_id: str = Field(min_length=1, max_length=180)
    required_field: str | None = Field(default=None, max_length=180)
    files: list[PackageFile] = Field(min_length=1, max_length=100)

class Proposal(Input):
    title: str = Field(min_length=1, max_length=200)
    description: str = Field(min_length=1, max_length=2000)
    action: str = Field(min_length=1, max_length=2000)
    exceptions: str = Field(min_length=1, max_length=2000)
    field: str = Field(min_length=1, max_length=180)
    operator: Literal['lt', 'lte', 'gt', 'gte', 'eq'] = 'lt'
    threshold: str | None = Field(default=None, max_length=40)