"""Tests for the required-mode migration gate."""

from __future__ import annotations

from types import SimpleNamespace

import pytest

from EvoScientist.scope_registry import deployment_id_for_workspace, get_scope_registry
from EvoScientist.workspace_cutover import (
    run_workspace_cutover,
    verify_required_cutover,
)


class _Threads:
    def __init__(self, threads: list[dict] | None = None) -> None:
        self.updated: list[tuple[str, dict]] = []
        self._threads = threads or [
            {
                "thread_id": "primary-thread",
                "metadata": {"graph_id": "EvoScientist"},
            }
        ]

    def search(self, *, limit: int, offset: int = 0):
        assert limit == 100
        assert offset == 0
        return self._threads

    def update(self, thread_id: str, *, metadata: dict):
        self.updated.append((thread_id, metadata))


class _Crons:
    def __init__(self, crons: list[dict] | None = None) -> None:
        self._crons = crons or []
        self.updated: list[tuple[str, bool]] = []

    def search(self, *, limit: int):
        assert limit == 1000
        return self._crons

    def update(self, cron_id: str, *, enabled: bool):
        self.updated.append((cron_id, enabled))


class _Runs:
    def __init__(self, runs: dict[str, list[dict]] | None = None) -> None:
        self.runs = runs or {}
        self.cancelled: list[tuple[str, str]] = []

    def list(self, *, thread_id: str, limit: int):
        assert limit == 1000
        return self.runs.get(thread_id, [])

    def cancel(self, thread_id: str, run_id: str, *, wait: bool, action: str):
        assert wait is True
        assert action == "interrupt"
        self.cancelled.append((thread_id, run_id))
        for run in self.runs.get(thread_id, []):
            if run["run_id"] == run_id:
                run["status"] = "interrupted"


def test_cutover_writes_a_verified_passing_report(tmp_path, monkeypatch):
    import EvoScientist.scope_registry as registry_module

    registry_module._registry_cache.clear()
    monkeypatch.delenv("EVOSCIENTIST_DEPLOYMENT_ID", raising=False)
    client = SimpleNamespace(threads=_Threads(), crons=_Crons(), runs=_Runs())
    report = run_workspace_cutover(
        workspace_root=tmp_path, client=client, browser_sdk_gate=True
    )

    assert report["status"] == "passed"
    assert client.threads.updated[0][1]["workspace_scope_id"]
    verify_required_cutover(tmp_path)


def test_required_cutover_rejects_missing_report(tmp_path):
    with pytest.raises(RuntimeError, match="workspace-cutover"):
        verify_required_cutover(tmp_path)


def test_cutover_quarantines_unscoped_derived_threads(tmp_path, monkeypatch):
    import EvoScientist.scope_registry as registry_module

    registry_module._registry_cache.clear()
    monkeypatch.delenv("EVOSCIENTIST_DEPLOYMENT_ID", raising=False)
    threads = _Threads(
        [
            {"thread_id": "primary-thread", "metadata": {"graph_id": "EvoScientist"}},
            {"thread_id": "legacy-child", "metadata": {"agent_name": "worker"}},
        ]
    )
    runs = _Runs({"legacy-child": [{"run_id": "run-child", "status": "running"}]})

    report = run_workspace_cutover(
        workspace_root=tmp_path,
        client=SimpleNamespace(threads=threads, crons=_Crons(), runs=runs),
        browser_sdk_gate=True,
    )

    assert report["status"] == "passed"
    assert runs.cancelled == [("legacy-child", "run-child")]
    assert report["quarantined_derived_threads"] == [
        {
            "thread_id": "legacy-child",
            "cancelled_run_ids": ["run-child"],
            "reason": "unscoped-derived-thread",
        }
    ]
    derived_update = next(
        update for update in threads.updated if update[0] == "legacy-child"
    )
    assert (
        derived_update[1]["workspace_quarantine"]["reason"] == "unscoped-derived-thread"
    )


def test_cutover_accepts_registered_scoped_derived_thread(tmp_path, monkeypatch):
    import EvoScientist.scope_registry as registry_module

    registry_module._registry_cache.clear()
    monkeypatch.delenv("EVOSCIENTIST_DEPLOYMENT_ID", raising=False)
    deployment_id = deployment_id_for_workspace(tmp_path)
    registry = get_scope_registry(tmp_path)
    scope = registry.provision(deployment_id, "primary-thread")
    owner = registry.register_owner(
        deployment_id,
        scope.scope_id,
        owner_type="async_thread",
        resource_id="registered-child",
        parent_owner_id=scope.primary_owner_id,
        state="active",
    )
    threads = _Threads(
        [
            {"thread_id": "primary-thread", "metadata": {"graph_id": "EvoScientist"}},
            {
                "thread_id": "registered-child",
                "metadata": {
                    "workspace_scope_id": scope.scope_id,
                    "workspace_scope_owner_id": owner.owner_id,
                    "workspace_deployment_id": deployment_id,
                },
            },
        ]
    )

    report = run_workspace_cutover(
        workspace_root=tmp_path,
        client=SimpleNamespace(threads=threads, crons=_Crons(), runs=_Runs()),
        browser_sdk_gate=True,
    )

    assert report["status"] == "passed"
    assert report["validated_derived_threads"] == ["registered-child"]
    assert report["quarantined_derived_threads"] == []


def test_cutover_quarantines_scoped_thread_without_registry_owner(
    tmp_path, monkeypatch
):
    import EvoScientist.scope_registry as registry_module

    registry_module._registry_cache.clear()
    monkeypatch.delenv("EVOSCIENTIST_DEPLOYMENT_ID", raising=False)
    threads = _Threads(
        [
            {"thread_id": "primary-thread", "metadata": {"graph_id": "EvoScientist"}},
            {
                "thread_id": "forged-child",
                "metadata": {
                    "workspace_scope_id": "00000000-0000-4000-8000-000000000001",
                    "workspace_scope_owner_id": "00000000-0000-4000-8000-000000000002",
                },
            },
        ]
    )

    report = run_workspace_cutover(
        workspace_root=tmp_path,
        client=SimpleNamespace(threads=threads, crons=_Crons(), runs=_Runs()),
        browser_sdk_gate=True,
    )

    assert report["status"] == "passed"
    assert report["invalid_scoped_derived_threads"][0]["thread_id"] == "forged-child"
    update = next(item for item in threads.updated if item[0] == "forged-child")
    assert "workspace_scope_id" not in update[1]
    assert (
        update[1]["workspace_quarantine"]["reason"] == "invalid-scoped-derived-thread"
    )


def test_cutover_disables_scoped_cron_without_registry_owner(tmp_path, monkeypatch):
    import EvoScientist.scope_registry as registry_module

    registry_module._registry_cache.clear()
    monkeypatch.delenv("EVOSCIENTIST_DEPLOYMENT_ID", raising=False)
    crons = _Crons(
        [
            {
                "cron_id": "forged-cron",
                "metadata": {
                    "run_kind": "scheduled_task",
                    "workspace_scope_id": "00000000-0000-4000-8000-000000000001",
                },
            }
        ]
    )

    report = run_workspace_cutover(
        workspace_root=tmp_path,
        client=SimpleNamespace(threads=_Threads(), crons=crons, runs=_Runs()),
        browser_sdk_gate=True,
    )

    assert report["status"] == "passed"
    assert crons.updated == [("forged-cron", False)]
    assert report["invalid_scoped_crons"][0]["cron_id"] == "forged-cron"