{# Metadata #} 
{%- set stop_strings = ["<|im_start|>", "<|im_end|>"] -%}
{%- set tool_start = "<|tool_start|>" -%}

{# Variables #}
{%- set message_roles = ['system', 'user', 'assistant', 'tool'] -%}
{%- set tool_end = "<|tool_end|>" -%}
{%- set start_header = "<|start_header_id|>" -%}
{%- set end_header = "<|end_header_id|>\n" -%}

{%- set example_tool_call -%}[
    {
        "id": "tool_id_1342",
        "function": {
        "arguments": "arg_name": 3,
        "name": "tool_name"
        },
        "type": "function"
    },
    {
        "id": "example_id_13f42",
        "function": {
        "arguments": "example_arg": 1.0, "another_example_arg": true,
        "name": "another_tool_name"
        },
        "type": "function"
    }
]
{%- endset -%}

{%- set inital_system_prompt -%}You are an assistant that has access to the following set of tools, to call a tool:
1. Prefix calls with '{{ tool_start }}' and end calls with '{{ tool_end }}'
2. Ensure you use the correct type for arguments. For example, if the argument is a string, ensure it is enclosed in quotes, otherwise, it should not be.
3. Generate all calls using the following json tool call format. Here is a multi tool call example:

{{ tool_start }}{{ example_tool_call }}{{ tool_end }}

Here are the tools available for you to call:
{{ tools | tojson(indent=2) }}
{%- endset -%}

{%- for message in messages -%}
    {%- set role = message['role'] | lower -%}
    {%- if role not in message_roles -%}
        {{ raise_exception('Invalid role ' + message['role'] + '. Only ' + message_roles | join(', ') + ' are supported.') }}
    {%- endif -%}

    {%- set content = message['content'] if message['content'] is defined else '' | trim -%}
    {%- if loop.first -%}
    {{- bos_token }}{{ start_header }}{{ role }}{{ end_header }}
    {{- inital_system_prompt + "\n\n" }}

    {{- content }}{{ eos_token }}
    {%- endif -%}

    {%- if not loop.first -%}
        {{- start_header }}{{ role }}{{ end_header }}
        {{- content }}
        {%- if 'tool_calls' in message and message['tool_calls'] -%}
            {{- tool_start }}{{ message['tool_calls'] | tojson(indent=2) }}{{ tool_end }}
        {%- endif -%}
    {{- eos_token }}

    {%- endif -%}
{%- endfor -%}

{%- if add_generation_prompt %}
    {{- start_header }}assistant{{ end_header }}
{%- endif %}