# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
from typing import Optional

import pytest
import os
import torch

from vllm.platforms import current_platform

from ....utils import large_gpu_mark
from ...registry import HF_EXAMPLE_MODELS
from ...utils import check_logprobs_close
from ....utils import models_path_prefix

# These have unsupported head_dim for FA. We do not
# have a clean way to fall back, so we fail with
# a clear msg when it happens.
# https://github.com/vllm-project/vllm/issues/14524
# NOTE(woosuk): Skipping these tests until V1 supports them.
# REQUIRES_V0 = ["microsoft/phi-2", "stabilityai/stablelm-3b-4e1t"]

# This list contains the model that are using AITER kernel.
# Skip model that are not using AITER tests.
# When more AITER kernels are added, this list will not be
# needed as all the models will be calling AITER kernels
# in parts of the operators
AITER_MODEL_LIST = [
    os.path.join(models_path_prefix, "meta-llama/Llama-3.2-1B-Instruct"),
    os.path.join(models_path_prefix, "openbmb/MiniCPM3-4B"),
    os.path.join(models_path_prefix, "Qwen/Qwen-7B-Chat"),
    os.path.join(models_path_prefix, "Qwen/Qwen2.5-0.5B-Instruct"),
    os.path.join(models_path_prefix, "TitanML/tiny-mixtral"),
    os.path.join(models_path_prefix, "Qwen/Qwen3-8B"),
]


# @maybe_test_rocm_aiter
@pytest.mark.parametrize(
    "model",
    [
        pytest.param(
            os.path.join(models_path_prefix, "bigscience/bloom-560m"),  # bloom - testing alibi slopes
            marks=[pytest.mark.core_model, pytest.mark.slow_test],
        ),
        pytest.param(
            os.path.join(models_path_prefix, "openai-community/gpt2"),  # gpt2
            marks=[pytest.mark.core_model, pytest.mark.cpu_model],
        ),
        pytest.param(os.path.join(models_path_prefix, "Milos/slovak-gpt-j-405M")),  # gptj
        pytest.param(os.path.join(models_path_prefix, "bigcode/tiny_starcoder_py")),  # gpt_bigcode
        pytest.param(os.path.join(models_path_prefix, "EleutherAI/pythia-70m")),  # gpt_neox
        pytest.param(
            os.path.join(models_path_prefix, "google/gemma-1.1-2b-it"),  # gemma
            marks=[
                pytest.mark.core_model, pytest.mark.cpu_model,
                pytest.mark.slow_test
            ],
        ),
        pytest.param(
            os.path.join(models_path_prefix, "zai-org/chatglm3-6b"),  # chatglm (text-only)
        ),
        pytest.param(
            os.path.join(models_path_prefix, "meta-llama/Llama-3.2-1B-Instruct"),  # llama
            marks=[pytest.mark.core_model, pytest.mark.cpu_model],
        ),
        pytest.param(
            os.path.join(models_path_prefix, "openbmb/MiniCPM3-4B"),
            # fused_moe not supported on CPU
            marks=[pytest.mark.core_model,
                   large_gpu_mark(min_gb=32)],
        ),
        pytest.param(
            os.path.join(models_path_prefix, "facebook/opt-125m"),  # opt
            marks=[pytest.mark.core_model, pytest.mark.cpu_model],
        ),
        pytest.param(
            os.path.join(models_path_prefix, "microsoft/phi-2"),  # phi
            marks=[pytest.mark.core_model, pytest.mark.slow_test],
        ),
        pytest.param(
            os.path.join(models_path_prefix, "Qwen/Qwen-7B-Chat"),  # qwen (text-only)
        ),
        pytest.param(
            os.path.join(models_path_prefix, "Qwen/Qwen2.5-0.5B-Instruct"),  # qwen2
            marks=[
                pytest.mark.core_model, pytest.mark.cpu_model,
                pytest.mark.slow_test
            ],
        ),
        pytest.param(
            os.path.join(models_path_prefix, "Qwen/Qwen3-8B"),  # qwen (text-only)
        ),
        pytest.param(os.path.join(models_path_prefix, "stabilityai/stablelm-3b-4e1t")),  # stablelm
        pytest.param(os.path.join(models_path_prefix, "bigcode/starcoder2-3b")),  # starcoder2
        pytest.param(
            os.path.join(models_path_prefix, "TitanML/tiny-mixtral"),  # mixtral
            marks=[pytest.mark.core_model],
        ),
        pytest.param(
            os.path.join(models_path_prefix, "allenai/OLMoE-1B-7B-0924-Instruct"),
            marks=[pytest.mark.cpu_model],
        ),
        pytest.param("swiss-ai/Apertus-8B-2509"),  # apertus
    ])
@pytest.mark.parametrize("max_tokens", [32])
@pytest.mark.parametrize("num_logprobs", [5])
@pytest.mark.parametrize(
    "use_rocm_aiter", [True, False] if current_platform.is_rocm() else [False])
@pytest.mark.parametrize("use_prompt_embeds", [True, False])
def test_models(hf_runner, vllm_runner, example_prompts, model: str,
                max_tokens: int, num_logprobs: int, use_rocm_aiter: bool,
                use_prompt_embeds: bool, monkeypatch) -> None:

    model_info = HF_EXAMPLE_MODELS.find_hf_info(model)
    model_info.check_available_online(on_fail="skip")
    model_info.check_transformers_version(on_fail="skip")

    if use_rocm_aiter and (model in AITER_MODEL_LIST):
        monkeypatch.setenv("VLLM_ROCM_USE_AITER", "1")
    elif use_rocm_aiter and model not in AITER_MODEL_LIST:
        # Skip model that are not using AITER tests.
        # When more AITER kernels are added, this list will not be
        # needed as all the models will be calling AITER kernels
        # in parts of the operators
        pytest.skip(f"Skipping '{model}' model test with AITER kernel.")

    with hf_runner(model) as hf_model:
        hf_outputs = hf_model.generate_greedy_logprobs_limit(
            example_prompts, max_tokens, num_logprobs)

        prompt_embeds: Optional[list[torch.Tensor]] = ([] if use_prompt_embeds
                                                       else None)

        prompt_token_ids = []
        for prompt in example_prompts:
            token_ids = hf_model.tokenizer(prompt,
                                           return_tensors="pt").input_ids.to(
                                               hf_model.model.device)
            prompt_token_ids.append(token_ids)
            if prompt_embeds is not None:
                prompt_embeds.append(hf_model.model.get_input_embeddings()(
                    token_ids).squeeze(0))

    with vllm_runner(
            model,
            tokenizer_name=model_info.tokenizer or model,
            tokenizer_mode=model_info.tokenizer_mode,
            trust_remote_code=model_info.trust_remote_code,
            max_num_seqs=2,
            enable_prompt_embeds=use_prompt_embeds,
    ) as vllm_model:
        vllm_outputs = vllm_model.generate_greedy_logprobs(
            example_prompts, max_tokens, num_logprobs)
        if prompt_embeds is not None:
            vllm_outputs_from_embeds = vllm_model.generate_greedy_logprobs(
                prompt_embeds, max_tokens, num_logprobs)

    check_logprobs_close(
        outputs_0_lst=hf_outputs,
        outputs_1_lst=vllm_outputs,
        name_0="hf",
        name_1="vllm",
    )
    if prompt_embeds is not None:
        check_logprobs_close(
            outputs_0_lst=vllm_outputs,
            outputs_1_lst=vllm_outputs_from_embeds,
            name_0="vllm",
            name_1="vllm_from_embeds",
        )

    if use_rocm_aiter:
        # this is to ensure that vllm engine
        # has deallocated the memory before running the next
        # unit tests. On ROCm, when using AITER
        # the memory might not be deallocated completely
        # before running the next test case
        torch.cuda.synchronize()
