import asyncio  # used to run async functions
# Patch the verbose_proxy_logger in the tested module
import sys
import time
import types
from typing import Optional

import pytest  # used for our unit tests
from litellm.proxy.health_check_utils.shared_health_check_manager import \
    SharedHealthCheckManager

# --- Mocks and Test Doubles ---

class DummyLogger:
    """Dummy logger to replace verbose_proxy_logger for testing."""
    def __init__(self):
        self.infos = []
        self.errors = []

    def info(self, msg, *args):
        self.infos.append((msg, args))

    def error(self, msg, *args):
        self.errors.append((msg, args))


dummy_logger = DummyLogger()

# --- Minimal Dummy RedisCache for Testing ---

class DummyRedisCache:
    """A minimal async RedisCache mock for testing."""
    def __init__(self):
        self.store = {}
        self.async_get_cache_calls = []
        self.async_delete_cache_calls = []
        self.should_raise_on_get = False
        self.should_raise_on_delete = False

    async def async_get_cache(self, key, *args, **kwargs):
        self.async_get_cache_calls.append(key)
        if self.should_raise_on_get:
            raise RuntimeError("Dummy get error")
        return self.store.get(key, None)

    async def async_delete_cache(self, key):
        self.async_delete_cache_calls.append(key)
        if self.should_raise_on_delete:
            raise RuntimeError("Dummy delete error")
        self.store.pop(key, None)
        return 1

# --- Test Cases ---

# 1. Basic Test Cases

@pytest.mark.asyncio
async def test_release_health_check_lock_no_redis_cache():
    """Should do nothing and not error if redis_cache is None."""
    mgr = SharedHealthCheckManager(redis_cache=None)
    await mgr.release_health_check_lock()
    # Nothing to assert: should not raise, should not log

@pytest.mark.asyncio
async def test_release_health_check_lock_not_owner():
    """Should not delete lock if pod does not own it."""
    redis = DummyRedisCache()
    redis.store["health_check_lock"] = "other_pod"
    mgr = SharedHealthCheckManager(redis_cache=redis)
    await mgr.release_health_check_lock()

@pytest.mark.asyncio
async def test_release_health_check_lock_owner():
    """Should delete lock if pod owns it and log info."""
    redis = DummyRedisCache()
    mgr = SharedHealthCheckManager(redis_cache=redis)
    redis.store["health_check_lock"] = mgr.pod_id
    await mgr.release_health_check_lock()

@pytest.mark.asyncio
async def test_release_health_check_lock_lock_missing():
    """Should not error if lock key is missing in redis."""
    redis = DummyRedisCache()
    mgr = SharedHealthCheckManager(redis_cache=redis)
    # No lock set
    await mgr.release_health_check_lock()

# 2. Edge Test Cases

@pytest.mark.asyncio
async def test_release_health_check_lock_concurrent_ownership():
    """Concurrent pods should only delete if they own the lock."""
    redis = DummyRedisCache()
    # Two managers with different pod_ids
    mgr1 = SharedHealthCheckManager(redis_cache=redis)
    mgr2 = SharedHealthCheckManager(redis_cache=redis)
    redis.store["health_check_lock"] = mgr1.pod_id

    # Both try to release concurrently
    await asyncio.gather(
        mgr1.release_health_check_lock(),
        mgr2.release_health_check_lock()
    )

@pytest.mark.asyncio
async def test_release_health_check_lock_exception_on_get():
    """Should log error if async_get_cache raises."""
    redis = DummyRedisCache()
    redis.should_raise_on_get = True
    mgr = SharedHealthCheckManager(redis_cache=redis)
    await mgr.release_health_check_lock()

@pytest.mark.asyncio
async def test_release_health_check_lock_exception_on_delete():
    """Should log error if async_delete_cache raises."""
    redis = DummyRedisCache()
    mgr = SharedHealthCheckManager(redis_cache=redis)
    redis.store["health_check_lock"] = mgr.pod_id
    redis.should_raise_on_delete = True
    await mgr.release_health_check_lock()

# 3. Large Scale Test Cases

@pytest.mark.asyncio
async def test_release_health_check_lock_many_concurrent():
    """Many pods try to release lock concurrently; only owner deletes."""
    redis = DummyRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=redis) for _ in range(10)]
    # Pick one as the owner
    owner = managers[5]
    redis.store["health_check_lock"] = owner.pod_id

    await asyncio.gather(*(mgr.release_health_check_lock() for mgr in managers))

@pytest.mark.asyncio
async def test_release_health_check_lock_many_concurrent_no_owner():
    """Many pods try to release lock concurrently; none are owner."""
    redis = DummyRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=redis) for _ in range(10)]
    redis.store["health_check_lock"] = "unrelated_pod"
    await asyncio.gather(*(mgr.release_health_check_lock() for mgr in managers))

# 4. Throughput Test Cases

@pytest.mark.asyncio
async def test_release_health_check_lock_throughput_small_load():
    """Throughput: 10 pods, only one owns the lock."""
    redis = DummyRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=redis) for _ in range(10)]
    owner = managers[0]
    redis.store["health_check_lock"] = owner.pod_id
    await asyncio.gather(*(mgr.release_health_check_lock() for mgr in managers))

@pytest.mark.asyncio
async def test_release_health_check_lock_throughput_medium_load():
    """Throughput: 50 pods, only one owns the lock."""
    redis = DummyRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=redis) for _ in range(50)]
    owner = managers[42]
    redis.store["health_check_lock"] = owner.pod_id
    await asyncio.gather(*(mgr.release_health_check_lock() for mgr in managers))

@pytest.mark.asyncio
async def test_release_health_check_lock_throughput_high_volume():
    """Throughput: 200 pods, only one owns the lock."""
    redis = DummyRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=redis) for _ in range(200)]
    owner = managers[123]
    redis.store["health_check_lock"] = owner.pod_id
    await asyncio.gather(*(mgr.release_health_check_lock() for mgr in managers))

@pytest.mark.asyncio
async def test_release_health_check_lock_throughput_all_non_owners():
    """Throughput: 100 pods, none own the lock."""
    redis = DummyRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=redis) for _ in range(100)]
    redis.store["health_check_lock"] = "other_pod"
    await asyncio.gather(*(mgr.release_health_check_lock() for mgr in managers))
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.
#------------------------------------------------
import asyncio  # used to run async functions
# Patch the verbose_proxy_logger for testing
import sys
import time
from typing import Optional

import pytest  # used for our unit tests
from litellm.proxy.health_check_utils.shared_health_check_manager import \
    SharedHealthCheckManager

# --- Mocks and Stubs ---

class MockLogger:
    """A mock logger that records info and error calls."""
    def __init__(self):
        self.info_calls = []
        self.error_calls = []

    def info(self, msg, *args):
        self.info_calls.append((msg, args))

    def error(self, msg, *args):
        self.error_calls.append((msg, args))

module_name = "litellm._logging"
if module_name in sys.modules:
    sys.modules[module_name].verbose_proxy_logger = MockLogger()
else:
    import types
    sys.modules[module_name] = types.SimpleNamespace(verbose_proxy_logger=MockLogger())
verbose_proxy_logger = sys.modules[module_name].verbose_proxy_logger

# Minimal Mock RedisCache for async operations
class MockRedisCache:
    def __init__(self):
        self.storage = {}
        self.async_get_cache_calls = []
        self.async_delete_cache_calls = []
        self.raise_on_get = False
        self.raise_on_delete = False

    async def async_get_cache(self, key, *args, **kwargs):
        self.async_get_cache_calls.append(key)
        if self.raise_on_get:
            raise Exception("Mock get error")
        return self.storage.get(key, None)

    async def async_delete_cache(self, key):
        self.async_delete_cache_calls.append(key)
        if self.raise_on_delete:
            raise Exception("Mock delete error")
        self.storage.pop(key, None)
        return True

# --- Unit Tests ---

# 1. Basic Test Cases

@pytest.mark.asyncio
async def test_release_health_check_lock_no_redis_cache():
    """Test that nothing happens if redis_cache is None."""
    manager = SharedHealthCheckManager(redis_cache=None)
    # Should not raise or call logger
    await manager.release_health_check_lock()

@pytest.mark.asyncio
async def test_release_health_check_lock_not_owner():
    """Test that lock is not released if pod does not own it."""
    cache = MockRedisCache()
    manager = SharedHealthCheckManager(redis_cache=cache)
    # Set lock to a different pod id
    cache.storage[manager.get_health_check_lock_key()] = "pod_other"
    await manager.release_health_check_lock()

@pytest.mark.asyncio
async def test_release_health_check_lock_owner():
    """Test that lock is released if pod owns it."""
    cache = MockRedisCache()
    manager = SharedHealthCheckManager(redis_cache=cache)
    # Set lock to this pod's id
    cache.storage[manager.get_health_check_lock_key()] = manager.pod_id
    await manager.release_health_check_lock()

@pytest.mark.asyncio
async def test_release_health_check_lock_lock_not_set():
    """Test that nothing happens if lock key is not set."""
    cache = MockRedisCache()
    manager = SharedHealthCheckManager(redis_cache=cache)
    # Lock key not set
    await manager.release_health_check_lock()

# 2. Edge Test Cases

@pytest.mark.asyncio
async def test_release_health_check_lock_exception_on_get():
    """Test that exception in async_get_cache is handled and error is logged."""
    cache = MockRedisCache()
    cache.raise_on_get = True
    manager = SharedHealthCheckManager(redis_cache=cache)
    await manager.release_health_check_lock()

@pytest.mark.asyncio
async def test_release_health_check_lock_exception_on_delete():
    """Test that exception in async_delete_cache is handled and error is logged."""
    cache = MockRedisCache()
    manager = SharedHealthCheckManager(redis_cache=cache)
    cache.storage[manager.get_health_check_lock_key()] = manager.pod_id
    cache.raise_on_delete = True
    await manager.release_health_check_lock()

@pytest.mark.asyncio
async def test_release_health_check_lock_concurrent_release():
    """Test concurrent release attempts by multiple managers."""
    cache = MockRedisCache()
    # Two managers, only one is owner
    manager1 = SharedHealthCheckManager(redis_cache=cache)
    manager2 = SharedHealthCheckManager(redis_cache=cache)
    cache.storage[manager1.get_health_check_lock_key()] = manager1.pod_id
    # Run both concurrently
    await asyncio.gather(
        manager1.release_health_check_lock(),
        manager2.release_health_check_lock()
    )

# 3. Large Scale Test Cases

@pytest.mark.asyncio
async def test_release_health_check_lock_many_concurrent():
    """Test many concurrent managers, only one owns the lock."""
    cache = MockRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=cache) for _ in range(10)]
    # Pick one manager to be the owner
    owner = managers[5]
    cache.storage[owner.get_health_check_lock_key()] = owner.pod_id
    # Run all releases concurrently
    await asyncio.gather(*(m.release_health_check_lock() for m in managers))
    for m in managers:
        if m is not owner:
            pass

@pytest.mark.asyncio
async def test_release_health_check_lock_many_owners():
    """Test many managers, each with their own pod_id, each tries to release a lock they own."""
    cache = MockRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=cache) for _ in range(5)]
    # Each manager gets their own lock key (simulate separate keys)
    # But function always uses same key, so only last one will own
    for m in managers:
        cache.storage[m.get_health_check_lock_key()] = m.pod_id
        await m.release_health_check_lock()

# 4. Throughput Test Cases

@pytest.mark.asyncio
async def test_release_health_check_lock_throughput_small_load():
    """Throughput: small load, 5 managers, one owner."""
    cache = MockRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=cache) for _ in range(5)]
    owner = managers[2]
    cache.storage[owner.get_health_check_lock_key()] = owner.pod_id
    await asyncio.gather(*(m.release_health_check_lock() for m in managers))

@pytest.mark.asyncio
async def test_release_health_check_lock_throughput_medium_load():
    """Throughput: medium load, 50 managers, one owner."""
    cache = MockRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=cache) for _ in range(50)]
    owner = managers[25]
    cache.storage[owner.get_health_check_lock_key()] = owner.pod_id
    await asyncio.gather(*(m.release_health_check_lock() for m in managers))

@pytest.mark.asyncio
async def test_release_health_check_lock_throughput_high_volume():
    """Throughput: high volume, 200 managers, one owner."""
    cache = MockRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=cache) for _ in range(200)]
    owner = managers[100]
    cache.storage[owner.get_health_check_lock_key()] = owner.pod_id
    await asyncio.gather(*(m.release_health_check_lock() for m in managers))

@pytest.mark.asyncio
async def test_release_health_check_lock_throughput_all_owners():
    """Throughput: all managers are owners (simulate sequential ownership)."""
    cache = MockRedisCache()
    managers = [SharedHealthCheckManager(redis_cache=cache) for _ in range(10)]
    for m in managers:
        cache.storage[m.get_health_check_lock_key()] = m.pod_id
        await m.release_health_check_lock()
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.