{%- set add_generation_prompt = add_generation_prompt | default(false) -%}
{%- set thinking = thinking | default(false) -%}
{%- set bos_token = bos_token | default('', true) -%}
{%- set tools = tools | default([], true) -%}
{%- set ns = namespace(system_prompt='') -%}
{%- for message in messages -%}
    {%- if message.role == 'system' -%}
        {%- set ns.system_prompt = message.content | trim -%}
    {%- endif -%}
{%- endfor -%}
{{- bos_token -}}
{%- if ns.system_prompt or tools | length > 0 -%}
{{ 'System: ' }}{{ ns.system_prompt }}
{%- if tools | length > 0 -%}
{%- if ns.system_prompt %}{{ '\n' }}{%- endif -%}
{{ 'Tools:\n' -}}
{{ tools | tojson }}
{{ '\nWhen using a tool, return only a compact JSON function call in a ```json block, like {"name":"calculator","arguments":{"expression":"2+2"}}. The `name` field must be top-level, never inside `arguments`. Do not copy the tool schema into arguments. Otherwise answer normally.' }}
{%- endif -%}
{{ '\n\n' }}
{%- endif -%}
{%- for message in messages -%}
{%- if message.role == 'user' -%}
{{ 'User: ' ~ (message.content | trim) ~ '\n\n' }}
{%- elif message.role == 'assistant' -%}
{%- generation -%}
{%- set content = message.content | default('', true) | trim -%}
{{ 'Assistant:' }}
{%- if message.tool_calls is defined and message.tool_calls | length > 0 -%}
{%- if content %}{{ ' ' ~ content ~ '\n' }}{%- endif -%}
{%- for tool_call in message.tool_calls -%}
    {%- if tool_call.function is defined -%}
        {%- set name = tool_call.function.name | default('') -%}
        {%- set args = tool_call.function.arguments | default({}, true) -%}
    {%- else -%}
        {%- set name = tool_call.name | default('') -%}
        {%- set args = tool_call.arguments | default({}, true) -%}
    {%- endif -%}
{{ ' ```json\n' -}}
{{ '{"name": ' }}{{ name | tojson }}{{ ', "arguments": ' }}{% if args is string %}{{ args }}{% else %}{{ args | tojson }}{% endif %}{{ '}\n' -}}
{{ '```' }}{{ '\n' if not loop.last else '' }}
{%- endfor -%}
{%- elif content -%}
{{ ' ' ~ content }}
{%- endif -%}
{{ '\n\n' }}
{%- endgeneration -%}
{%- elif message.role == 'tool' -%}
{{ 'User: Function output:\n' ~ (message.content | trim) ~ '\n\n' }}
{%- endif -%}
{%- endfor -%}
{%- if add_generation_prompt -%}
{%- if thinking -%}
{{ 'Assistant: <think' }}
{%- else -%}
{{ 'Assistant: <think></think>\n' }}
{%- endif -%}
{%- endif -%}