# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# the root directory of this source tree.

# Copyright (c) Meta Platforms, Inc. and affiliates.
# All rights reserved.
#
# This source code is licensed under the terms described in the LICENSE file in
# top-level folder for each specific model found within the models/ directory at
# the top-level of this source tree.

import textwrap
from datetime import datetime

from llama_stack.models.llama.llama3.prompt_templates import (
    BuiltinToolGenerator,
    FunctionTagCustomToolGenerator,
    JsonCustomToolGenerator,
    PythonListCustomToolGenerator,
    SystemDefaultGenerator,
)


def check_generator_output(generator):
    for example in generator.data_examples():
        pt = generator.gen(example)
        text = pt.render()
        if not example:
            continue
        for tool in example:
            assert tool.tool_name in text


def test_system_default():
    generator = SystemDefaultGenerator()
    today = datetime.now().strftime("%d %B %Y")
    expected_text = f"Cutting Knowledge Date: December 2023\nToday Date: {today}"
    assert expected_text.strip("\n") == generator.gen(generator.data_examples()[0]).render()


def test_system_builtin_only():
    generator = BuiltinToolGenerator()
    expected_text = textwrap.dedent(
        """
        Environment: ipython
        Tools: brave_search, wolfram_alpha
        """
    )
    assert expected_text.strip("\n") == generator.gen(generator.data_examples()[0]).render()


def test_system_custom_only():
    generator = JsonCustomToolGenerator()
    check_generator_output(generator)


def test_system_custom_function_tag():
    generator = FunctionTagCustomToolGenerator()
    check_generator_output(generator)


def test_llama_3_2_system_zero_shot():
    generator = PythonListCustomToolGenerator()
    check_generator_output(generator)


def test_llama_3_2_provided_system_prompt():
    generator = PythonListCustomToolGenerator()
    user_system_prompt = textwrap.dedent(
        """
        Overriding message.

        {{ function_description }}
        """
    )
    example = generator.data_examples()[0]

    pt = generator.gen(example, user_system_prompt)
    text = pt.render()
    assert "Overriding message." in text
    assert '"name": "get_weather"' in text