"""T25: Schedule pause/resume lifecycle tests.

Tests schedule_manager.py against a local embedded Temporal server
(temporalio[testing] — WorkflowEnvironment.start_local()).

Requires no Docker; the Temporal testing library bundles a self-contained server.

Run with:
    uv run pytest tests/test_schedule_lifecycle.py -v
"""

from __future__ import annotations

import asyncio
import uuid

import pytest
from temporalio.client import ScheduleOverlapPolicy
from temporalio.testing import WorkflowEnvironment

from activity_core.models import ActivityDefinition, CronTriggerConfig
from activity_core.schedule_manager import (
    delete_schedule,
    list_schedules,
    schedule_id,
    upsert_schedule,
)


def _make_defn(
    *,
    cron: str = "0 9 * * 1-5",
    misfire_policy: str = "skip",
    enabled: bool = True,
    jitter: int = 0,
) -> ActivityDefinition:
    return ActivityDefinition(
        id=uuid.uuid4(),
        name="test-activity",
        enabled=enabled,
        trigger_config=CronTriggerConfig(
            cron_expression=cron,
            misfire_policy=misfire_policy,
            jitter_seconds=jitter,
        ),
    )


@pytest.fixture(scope="module")
async def env():
    """Start a local embedded Temporal server for the test module."""
    async with await WorkflowEnvironment.start_local() as e:
        yield e


# ── T25a: upsert creates a schedule and list_schedules finds it ──────────────

@pytest.mark.asyncio
async def test_upsert_schedule_creates_schedule(env: WorkflowEnvironment) -> None:
    defn = _make_defn()
    sid = schedule_id(defn.id)

    await upsert_schedule(env.client, defn)

    # The embedded test server's visibility index is eventually consistent —
    # wait briefly for the new schedule to appear in the listing.
    ids: list[str] = []
    for _ in range(10):
        schedules = await list_schedules(env.client)
        ids = [s["schedule_id"] for s in schedules]
        if sid in ids:
            break
        await asyncio.sleep(0.3)
    assert sid in ids, f"Expected schedule {sid!r} in {ids}"

    # Cleanup
    await delete_schedule(env.client, defn.id)


# ── T25b: upsert with enabled=False creates a paused schedule ────────────────

@pytest.mark.asyncio
async def test_upsert_disabled_creates_paused_schedule(env: WorkflowEnvironment) -> None:
    defn = _make_defn(enabled=False)

    await upsert_schedule(env.client, defn)

    handle = env.client.get_schedule_handle(schedule_id(defn.id))
    desc = await handle.describe()
    assert desc.schedule.state.paused, "Schedule should be paused when enabled=False"

    await delete_schedule(env.client, defn.id)


# ── T25c: second upsert (enabled=True) unpauses the schedule ────────────────

@pytest.mark.asyncio
async def test_upsert_reenables_paused_schedule(env: WorkflowEnvironment) -> None:
    defn_disabled = _make_defn(enabled=False)

    await upsert_schedule(env.client, defn_disabled)

    # Re-enable the same activity
    defn_enabled = ActivityDefinition(
        id=defn_disabled.id,
        name=defn_disabled.name,
        enabled=True,
        trigger_config=defn_disabled.trigger_config,
    )
    await upsert_schedule(env.client, defn_enabled)

    handle = env.client.get_schedule_handle(schedule_id(defn_enabled.id))
    desc = await handle.describe()
    assert not desc.schedule.state.paused, "Schedule should be unpaused after re-enable"

    await delete_schedule(env.client, defn_enabled.id)


# ── T25d: delete_schedule removes the schedule ───────────────────────────────

@pytest.mark.asyncio
async def test_delete_schedule_removes_schedule(env: WorkflowEnvironment) -> None:
    defn = _make_defn()

    await upsert_schedule(env.client, defn)
    await delete_schedule(env.client, defn.id)

    sid = schedule_id(defn.id)
    ids: list[str] = []
    for _ in range(10):
        schedules = await list_schedules(env.client)
        ids = [s["schedule_id"] for s in schedules]
        if sid not in ids:
            break
        await asyncio.sleep(0.3)
    assert sid not in ids, "Schedule should be gone after delete"


# ── T25e: delete_schedule is idempotent (no-op for non-existent schedule) ────

@pytest.mark.asyncio
async def test_delete_schedule_nonexistent_is_noop(env: WorkflowEnvironment) -> None:
    # Should not raise
    await delete_schedule(env.client, uuid.uuid4())


# ── T24: misfire_policy round-trip ───────────────────────────────────────────

@pytest.mark.asyncio
async def test_misfire_policy_skip_sets_overlap_skip(env: WorkflowEnvironment) -> None:
    defn = _make_defn(misfire_policy="skip")
    await upsert_schedule(env.client, defn)

    handle = env.client.get_schedule_handle(schedule_id(defn.id))
    desc = await handle.describe()
    assert desc.schedule.policy.overlap == ScheduleOverlapPolicy.SKIP

    await delete_schedule(env.client, defn.id)


@pytest.mark.asyncio
async def test_misfire_policy_catchup_sets_overlap_buffer_all(env: WorkflowEnvironment) -> None:
    defn = _make_defn(misfire_policy="catchup")
    await upsert_schedule(env.client, defn)

    handle = env.client.get_schedule_handle(schedule_id(defn.id))
    desc = await handle.describe()
    assert desc.schedule.policy.overlap == ScheduleOverlapPolicy.BUFFER_ALL

    await delete_schedule(env.client, defn.id)


@pytest.mark.asyncio
async def test_misfire_policy_compress_sets_overlap_buffer_one(env: WorkflowEnvironment) -> None:
    defn = _make_defn(misfire_policy="compress")
    await upsert_schedule(env.client, defn)

    handle = env.client.get_schedule_handle(schedule_id(defn.id))
    desc = await handle.describe()
    assert desc.schedule.policy.overlap == ScheduleOverlapPolicy.BUFFER_ONE

    await delete_schedule(env.client, defn.id)