{# Metadata #} 
{%- set stop_strings = ["<|im_start|>", "<|im_end|>"] -%}
{%- set message_roles = ['system', 'user', 'assistant', 'tool'] -%}
{%- set tool_start = "<|tool_start|>" -%}
{%- 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"
    }
]' -%}

{%- 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_json -%}

{%- set tool_reminder = 'Available Tools:
' + tools_json + '

Tool Call Format Example:
' + tool_start + example_tool_call + '

Prefix & Suffix: Begin tool calls with ' + tool_start + ' and end with ' + tool_end + '.
Argument Types: Use correct data types for arguments (e.g., strings in quotes, numbers without).' -%}

{# Template #}

{%- 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 }}

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

    {%- if not loop.first -%}
{{ start_header }}{{ role }}{{ end_header }}
{{ content }}
        {%- if 'tool_calls_json' in message and message['tool_calls_json'] -%}
{{ tool_start }}{{ message['tool_calls_json']}}{{ tool_end }}
        {%- endif -%}
{{ eos_token }}

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

{%- if tool_precursor -%}
{{ start_header }}system{{ end_header }}
{{ tool_reminder }}{{ eos_token }}
{{ start_header }}assistant{{ end_header }}
{{ tool_precursor }}{{ tool_start }}
{%- else -%}
{{ start_header }}assistant{{ end_header }}
{%- endif -%}