"""Draft types for the Rules Engine (pure data, no DB ids yet)."""

from dataclasses import dataclass
from typing import Literal

Clock = Literal["WALL", "WORKING"]
ActivityKind = Literal["PROCUREMENT", "INSTALLATION", "COMMISSIONING", "INSPECTION", "CUSTOM"]
DepType = Literal["FS", "SS", "FF", "SF"]
ProcurementType = Literal["SUPPLY", "APPLY", "SUPPLY_AND_APPLY"]
Responsibility = Literal["CONTRACTOR", "CUSTOMER", "ORG"]


@dataclass
class BOQItemInput:
    id: int
    project_id: int
    category_id: int
    room_id: int | None
    name: str
    quantity: float
    uom: str
    cost: float | None
    price: float | None
    procurement_type: ProcurementType
    procurement_responsibility: Responsibility
    is_material: bool
    metadata: dict


@dataclass
class ActivityDraft:
    boq_item_id: int
    template_id: int
    kind: ActivityKind
    name: str
    effort_days: float | None
    lead_time_days: float | None
    clock: Clock
    noisy: bool
    responsibility: Responsibility
    # tag used to wire up edges before activity ids exist
    _tag: str


@dataclass
class DependencyDraft:
    predecessor_tag: str
    successor_tag: str
    dep_type: DepType
    lag_days: float
    origin: Literal["TEMPLATE"]


@dataclass
class ExpandResult:
    activities: list[ActivityDraft]
    dependencies: list[DependencyDraft]