import pytest

from app.domain.models import CommandRequest, WorkflowCommand, WorkflowStage
from app.domain.workflow import InvalidTransitionError, WorkflowConflictError, apply_command
from app.repositories.memory import create_demo_project


def test_confirm_plan_advances_revision_and_stage() -> None:
    project = create_demo_project()
    updated = apply_command(
        project,
        CommandRequest(
            command=WorkflowCommand.CONFIRM_PLAN,
            expected_revision=project.revision,
            payload={"ceiling_height_mm": 2900},
        ),
    )

    assert updated.stage == WorkflowStage.BLOCKOUT
    assert updated.revision == project.revision + 1
    assert updated.plan.ceiling_height_mm == 2900


def test_stale_revision_is_rejected() -> None:
    project = create_demo_project()
    with pytest.raises(WorkflowConflictError):
        apply_command(
            project,
            CommandRequest(
                command=WorkflowCommand.CONFIRM_PLAN,
                expected_revision=project.revision - 1,
            ),
        )


def test_invalid_command_is_rejected() -> None:
    project = create_demo_project()
    with pytest.raises(InvalidTransitionError):
        apply_command(
            project,
            CommandRequest(
                command=WorkflowCommand.REQUEST_RENDER,
                expected_revision=project.revision,
            ),
        )


def test_unknown_region_is_rejected() -> None:
    project = create_demo_project()
    project.stage = WorkflowStage.REGION_SELECTION
    with pytest.raises(InvalidTransitionError):
        apply_command(
            project,
            CommandRequest(
                command=WorkflowCommand.SELECT_REGION,
                expected_revision=project.revision,
                payload={"region_id": "missing-region"},
            ),
        )