"""Typed read-only projections consumed by the supply workbench."""

from typing import Annotated, Literal

from pydantic import AwareDatetime, BeforeValidator, Field, JsonValue, model_validator

from app.domain.schemas.shared import (
    NonEmptyStr,
    NonNegativeInt,
    PositiveInt,
    StrictBool,
    StrictModel,
)


def _workbench_datetime_wire_value(value: object):
    from datetime import datetime

    if not isinstance(value, (datetime, str)):
        raise ValueError("datetime input must be an RFC3339 string or datetime instance")
    return value


WorkbenchDateTime = Annotated[
    AwareDatetime, BeforeValidator(_workbench_datetime_wire_value)
]
ProjectionAvailability = Literal["ready", "not_configured", "degraded"]


class WorkbenchRuntimeCondition(StrictModel):
    id: NonEmptyStr
    task_id: Literal["backend-schedule"]
    session_id: NonEmptyStr
    title: NonEmptyStr
    summary: NonEmptyStr
    status: Literal["pending", "running", "completed", "warning", "error"]
    risk_level: Literal["normal", "attention", "critical"]
    scheduled_at: WorkbenchDateTime
    updated_at: WorkbenchDateTime
    detail: NonEmptyStr
    recommendation: NonEmptyStr | None
    evidence: list[NonEmptyStr]
    model_name: Literal["TJWater scheduler"]


class WorkbenchAlertSource(StrictModel):
    task_type: Literal["scheduled_task", "analysis_task", "other_task"]
    task_id: NonEmptyStr
    run_id: NonEmptyStr


class WorkbenchRuntimeAlert(StrictModel):
    id: NonEmptyStr
    condition_id: NonEmptyStr | None
    source: WorkbenchAlertSource
    title: NonEmptyStr
    description: NonEmptyStr
    occurred_at: WorkbenchDateTime
    severity: Literal["warning", "critical"]


class WorkbenchPersistedAlert(StrictModel):
    alert_id: NonEmptyStr
    condition_id: NonEmptyStr | None
    source: WorkbenchAlertSource
    title: NonEmptyStr
    description: NonEmptyStr
    occurred_at: WorkbenchDateTime
    severity: Literal["warning", "critical"]
    status: Literal["active", "acknowledged", "resolved"]
    producer_id: NonEmptyStr | None = None
    updated_at: WorkbenchDateTime | None = None


class WorkbenchRuntimeScenario(StrictModel):
    id: NonEmptyStr
    run_id: NonEmptyStr
    name: NonEmptyStr
    description: NonEmptyStr
    status: Literal["draft", "active", "review"]
    run_type: NonEmptyStr
    run_type_label: NonEmptyStr
    run_status: NonEmptyStr
    created_at: WorkbenchDateTime


class WorkbenchRuntimeAnalysisFact(StrictModel):
    label: NonEmptyStr
    value: NonEmptyStr


class WorkbenchRuntimeAnalysisResult(StrictModel):
    result_type: NonEmptyStr
    created_at: WorkbenchDateTime
    facts: list[WorkbenchRuntimeAnalysisFact]


class WorkbenchRuntimeLatestAnalysis(StrictModel):
    run_id: NonEmptyStr
    name: NonEmptyStr
    run_type: NonEmptyStr
    run_type_label: NonEmptyStr
    status: NonEmptyStr
    status_label: NonEmptyStr
    created_by: NonEmptyStr
    created_at: WorkbenchDateTime
    started_at: WorkbenchDateTime
    results: list[WorkbenchRuntimeAnalysisResult]
    map_payload: dict[str, JsonValue] | None


class WorkbenchAnalysisHistoryItem(StrictModel):
    run_id: NonEmptyStr
    name: NonEmptyStr
    run_type: NonEmptyStr
    run_type_label: NonEmptyStr
    status: NonEmptyStr
    status_label: NonEmptyStr
    created_by: NonEmptyStr
    created_at: WorkbenchDateTime
    started_at: WorkbenchDateTime
    has_results: StrictBool


class WorkbenchAnalysisHistoryPage(StrictModel):
    items: list[WorkbenchAnalysisHistoryItem]
    limit: PositiveInt
    offset: NonNegativeInt
    next_offset: NonNegativeInt | None


class WorkOrderActivity(StrictModel):
    sequence: PositiveInt
    occurred_at: WorkbenchDateTime
    actor: NonEmptyStr
    kind: Literal["created", "updated", "feedback"]
    title: NonEmptyStr
    detail: NonEmptyStr


class WorkbenchRuntimeWorkOrder(StrictModel):
    id: NonEmptyStr
    code: NonEmptyStr
    scheduled_at: WorkbenchDateTime
    title: NonEmptyStr
    summary: NonEmptyStr
    status: Literal["pending", "running", "awaiting_reply", "completed"]
    risk_level: Literal["normal", "attention", "critical"]
    updated_at: WorkbenchDateTime
    detail: NonEmptyStr
    recommendation: NonEmptyStr | None
    duration_minutes: PositiveInt
    source: NonEmptyStr
    dispatcher: NonEmptyStr
    location: NonEmptyStr | None = None
    assignee: NonEmptyStr | None = None
    priority: Literal["normal", "urgent"]
    feedback_requirements: list[NonEmptyStr] = Field(default_factory=list)
    activity: list[WorkOrderActivity] = Field(default_factory=list)

    @model_validator(mode="before")
    @classmethod
    def accept_legacy_document(cls, value):
        if not isinstance(value, dict) or "subtasks" not in value:
            return value
        document = {key: item for key, item in value.items() if key != "subtasks"}
        subtasks = value.get("subtasks") or []
        first = subtasks[0] if subtasks else {}
        document.setdefault("location", first.get("location"))
        document.setdefault("assignee", first.get("assignee"))
        document.setdefault("feedback_requirements", list(dict.fromkeys(
            requirement for subtask in subtasks
            for requirement in subtask.get("reply_requirements", [])
        )))
        document.setdefault("activity", [])
        return document


class WorkbenchRuntimeSnapshot(StrictModel):
    availability: ProjectionAvailability
    source: Literal["none", "scheduled_tasks"]
    scenario_availability: ProjectionAvailability
    artifact_availability: ProjectionAvailability
    schedule_availability: ProjectionAvailability
    work_order_availability: ProjectionAvailability
    alert_availability: ProjectionAvailability
    generated_at: WorkbenchDateTime
    conditions: list[WorkbenchRuntimeCondition]
    alerts: list[WorkbenchRuntimeAlert]
    scenarios: list[WorkbenchRuntimeScenario]
    latest_analysis: WorkbenchRuntimeLatestAnalysis | None
    work_orders: list[WorkbenchRuntimeWorkOrder]