import pytest
from cq2_sdk.tasks.base import Task, TaskResult
from cq2_sdk.tasks.registry import TaskRegistry
from cq2_sdk.tasks.context import TaskContext
from cq2_sdk.tasks.stubs import (
    T01CreateRole, T02DismissHint, T13Activity, _REGISTRY,
)


class FakeCtx:
    """Minimal stand-in for TaskContext (we only need it to construct the registry)."""
    pass


@pytest.mark.asyncio
async def test_task_subclass_runs():
    class T(Task):
        id = "fake"
        name = "Fake"

        async def run(self, ctx):
            return TaskResult(success=True, elapsed=0.123, error=None)

    t = T()
    r = await t.run(ctx=None)
    assert r.success
    assert r.elapsed == 0.123
    assert r.error is None


@pytest.mark.asyncio
async def test_task_failure_reported():
    class T(Task):
        id = "fail"
        name = "Fail"

        async def run(self, ctx):
            return TaskResult(success=False, elapsed=0.5, error="boom")

    t = T()
    r = await t.run(ctx=None)
    assert not r.success
    assert r.error == "boom"


def test_all_13_tasks_registered():
    # All 13 in-game task IDs must be present
    for i in range(1, 14):
        tid = f"t{i:02d}"
        assert tid in _REGISTRY, f"missing {tid}"


def test_task_ids_and_names():
    assert T01CreateRole.id == "t01"
    assert T01CreateRole.name == "Create role"
    assert T02DismissHint.id == "t02"
    assert T13Activity.id == "t13"


def test_registry_lazy_instantiation():
    ctx = FakeCtx()  # type: ignore[arg-type]
    reg = TaskRegistry(ctx)  # type: ignore[arg-type]
    t1a = reg.t01
    t1b = reg.t01
    # Same instance returned (cached)
    assert t1a is t1b
    # Different tasks are different instances
    t2 = reg.t02
    assert t1a is not t2


def test_registry_unknown_id_raises():
    ctx = FakeCtx()  # type: ignore[arg-type]
    reg = TaskRegistry(ctx)  # type: ignore[arg-type]
    with pytest.raises(AttributeError, match="No task"):
        reg.t99


def test_registry_private_attr_raises():
    ctx = FakeCtx()  # type: ignore[arg-type]
    reg = TaskRegistry(ctx)  # type: ignore[arg-type]
    with pytest.raises(AttributeError):
        reg.__internal  # double underscore triggers __getattr__


def test_registry_all_ids_returns_13():
    ctx = FakeCtx()  # type: ignore[arg-type]
    reg = TaskRegistry(ctx)  # type: ignore[arg-type]
    assert len(reg.all_ids()) == 13
    assert "t01" in reg.all_ids()
    assert "t13" in reg.all_ids()