import asyncio
import async_timeout
import string
from redis import asyncio as aioredis
from . import dfly_args
from .seeder import Seeder, StaticSeeder


@dfly_args({"proactor_threads": 4})
async def test_static_seeder(async_client: aioredis.Redis):
    s = StaticSeeder(key_target=10_000, data_size=100)
    await s.run(async_client)

    assert abs(await async_client.dbsize() - 10_000) <= 50


@dfly_args({"proactor_threads": 4})
async def test_seeder_key_target(async_client: aioredis.Redis):
    """Ensure seeder reaches its key targets"""
    s = Seeder(units=len(Seeder.DEFAULT_TYPES) * 2, key_target=5000)

    # Ensure tests are not reasonably slow
    async with async_timeout.timeout(1 + 4):
        # Fill with 5k keys, 1% derivation = 50
        await s.run(async_client, target_deviation=0.01)
        assert abs(await async_client.dbsize() - 5000) <= 50

        # Run 1k ops, ensure key balance stays the "more or less" the same
        await s.run(async_client, target_ops=1000)
        assert abs(await async_client.dbsize() - 5000) <= 100

        # Run one second until stopped
        task = asyncio.create_task(s.run(async_client))
        await asyncio.sleep(1.0)
        await s.stop(async_client)
        await task

        # Change key target, 100 is actual minimum because "math breaks"
        s.change_key_target(0)
        await s.run(async_client, target_deviation=0.5)  # don't set low precision with low values
        assert await async_client.dbsize() < 200

        # Get cmdstat calls
        info = await async_client.info("ALL")
        calls = {
            k.split("_")[1]: v["calls"]
            for k, v in info.items()
            if k.startswith("cmdstat_") and v["calls"] > 50
        }
        assert len(calls) > 15  # we use at least 15 different commands


@dfly_args({"proactor_threads": 4})
async def test_seeder_capture(async_client: aioredis.Redis):
    """Ensure same data produces same state hashes"""

    async def set_data():
        p = async_client.pipeline()
        p.mset(mapping={f"string{i}": f"{i}" for i in range(100)})
        p.lpush("list1", *list(string.ascii_letters))
        p.sadd("set1", *list(string.ascii_letters))
        p.hset("hash1", mapping={f"{i}": l for i, l in enumerate(string.ascii_letters)})
        p.zadd("zset1", mapping={l: i for i, l in enumerate(string.ascii_letters)})
        await p.execute()

    # Capture with filled data
    await set_data()
    capture = await Seeder.capture(async_client)

    # Check hashes are 0 without data
    await async_client.flushall()
    assert all(h == 0 for h in (await Seeder.capture(async_client)))

    # Check setting the same data results in same hashes
    await set_data()
    assert capture == await Seeder.capture(async_client)

    # Check changing the data gives different hahses
    await async_client.lpush("list1", "NEW")
    assert capture != await Seeder.capture(async_client)

    # Undo our change
    await async_client.lpop("list1")
    assert capture == await Seeder.capture(async_client)

    # Do another change
    await async_client.spop("set1")
    assert capture != await Seeder.capture(async_client)