# Copyright (c) 2025 PaddlePaddle Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import os
import sys

import pytest

current_dir = os.path.dirname(os.path.abspath(__file__))
project_root = os.path.abspath(os.path.join(current_dir, ".."))
if project_root not in sys.path:
    sys.path.insert(0, project_root)

from tests.model_loader.utils import (
    check_tokens_id_and_text_close,
    form_model_get_output_topp0,
    get_paddle_model_path,
    run_with_timeout,
)

FD_ENGINE_QUEUE_PORT = int(os.getenv("FD_ENGINE_QUEUE_PORT", 8313))
FD_CACHE_QUEUE_PORT = int(os.getenv("FD_CACHE_QUEUE_PORT", 8333))

prompts = ["解释下“温故而知新", "Hello, how are you?"]


model_param_map = {
    "ernie-4_5-21b-a3b-bf16-paddle": {
        "tensor_parallel_size": 2,
        "quantizations": [
            {
                "quant_type": "wint4",
                "env": {"FD_ENABLE_MODEL_LOAD_CACHE": "1"},
            }
        ],
    }
}


params = []
for model, cfg in model_param_map.items():
    for q in cfg["quantizations"]:
        if isinstance(q, dict):
            quant, backend, env = q["quant_type"], q.get("backend", "default"), q.get("env", {})
        else:
            quant, backend, env = q, "default", {}
        params.append(
            pytest.param(
                model,
                cfg.get("tensor_parallel_size", 1),
                cfg.get("max_model_len", 1024),
                quant,
                cfg.get("max_tokens", 32),
                env,
                marks=[pytest.mark.core_model],
                id=f"{model}.{quant}.{backend}",
            )
        )


@pytest.mark.parametrize(
    "model_name_or_path,tensor_parallel_size,max_model_len,quantization,max_tokens,env",
    params,
)
def test_model_cache(
    fd_runner,
    model_name_or_path: str,
    tensor_parallel_size: int,
    max_model_len: int,
    max_tokens: int,
    quantization: str,
    env,
    monkeypatch,
) -> None:
    model_path = get_paddle_model_path(model_name_or_path)

    fd_outputs_v1 = run_with_timeout(
        target=form_model_get_output_topp0,
        args=(
            fd_runner,
            model_path,
            tensor_parallel_size,
            max_model_len,
            max_tokens,
            quantization,
            "default_v1",
            FD_ENGINE_QUEUE_PORT,
            prompts,
            FD_CACHE_QUEUE_PORT,
        ),
    )

    if env:
        for k, v in env.items():
            monkeypatch.setenv(k, v)

    fd_outputs_v1_with_cache = run_with_timeout(
        target=form_model_get_output_topp0,
        args=(
            fd_runner,
            model_path,
            tensor_parallel_size,
            max_model_len,
            max_tokens,
            quantization,
            "default_v1",
            FD_ENGINE_QUEUE_PORT,
            prompts,
            FD_CACHE_QUEUE_PORT,
        ),
    )
    check_tokens_id_and_text_close(
        outputs_0_lst=fd_outputs_v1,
        outputs_1_lst=fd_outputs_v1_with_cache,
        name_0="default_v1 loader",
        name_1="default_v1 loader using cache",
    )