{%- set image_count = namespace(value=0) %}
{%- set video_count = namespace(value=0) %}
{%- set default_system_prompt = "You are **Josie v2** (Just One Super Intelligent Entity - Version 2): a sharp, no-BS, confident language model built by Gökdeniz Gülmez, speaking directly to an adult user without hand-holding, disclaimers, or identity theatrics. Prioritise correctness, quality, and usefulness; lead with answers, and maintain a personality that is honest, self-aware, and task-loyal." %}

{%- macro render_content(content, do_vision_count, is_system_content=false) %}
    {%- if content is string %}
        {{- content }}
    {%- elif content is iterable and content is not mapping %}
        {%- for item in content %}
            {%- if 'image' in item or 'image_url' in item or item.type == 'image' %}
                {%- if is_system_content %}
                    {{- raise_exception('System message cannot contain images.') }}
                {%- endif %}
                {%- if do_vision_count %}
                    {%- set image_count.value = image_count.value + 1 %}
                {%- endif %}
                {%- if add_vision_id %}
                    {{- 'Picture ' ~ image_count.value ~ ': ' }}
                {%- endif %}
                {{- '<|vision_start|><|image_pad|><|vision_end|>' }}
            {%- elif 'video' in item or item.type == 'video' %}
                {%- if is_system_content %}
                    {{- raise_exception('System message cannot contain videos.') }}
                {%- endif %}
                {%- if do_vision_count %}
                    {%- set video_count.value = video_count.value + 1 %}
                {%- endif %}
                {%- if add_vision_id %}
                    {{- 'Video ' ~ video_count.value ~ ': ' }}
                {%- endif %}
                {{- '<|vision_start|><|video_pad|><|vision_end|>' }}
            {%- elif 'text' in item %}
                {{- item.text }}
            {%- else %}
                {{- raise_exception('Unexpected item type in content.') }}
            {%- endif %}
        {%- endfor %}
    {%- elif content is none or content is undefined %}
        {{- '' }}
    {%- else %}
        {{- raise_exception('Unexpected content type.') }}
    {%- endif %}
{%- endmacro %}

{%- if not messages %}
    {{- raise_exception('No messages provided.') }}
{%- endif %}

{%- if messages[0].role == 'system' %}
    {%- set active_system_prompt = render_content(
        messages[0].content,
        false,
        true
    ) | trim %}
{%- else %}
    {%- set active_system_prompt = default_system_prompt %}
{%- endif %}

{%- if tools and tools is iterable and tools is not mapping %}
    {{- '<|im_start|>system\n' }}
    {{- "# Tools\n\nYou have access to the following functions:\n\n<tools>" }}

    {%- for tool in tools %}
        {{- "\n" }}
        {{- tool | tojson }}
    {%- endfor %}

    {{- "\n</tools>" }}

    {{- '\n\nIf you choose to call a function ONLY reply in the following format with NO suffix:\n\n<tool_call>\n<function=example_function_name>\n<parameter=example_parameter_1>\nvalue_1\n</parameter>\n<parameter=example_parameter_2>\nThis is the value for the second parameter\nthat can span\nmultiple lines\n</parameter>\n</function>\n</tool_call>\n\n<IMPORTANT>\nReminder:\n- Function calls MUST follow the specified format: an inner <function=...></function> block must be nested within <tool_call></tool_call> XML tags\n- Required parameters MUST be specified\n- You may provide optional reasoning for your function call in natural language BEFORE the function call, but NOT after\n- If there is no function call available, answer the question like normal with your current knowledge and do not tell the user about function calls\n</IMPORTANT>' }}

    {%- if active_system_prompt %}
        {{- '\n\n' + active_system_prompt }}
    {%- endif %}

    {{- '<|im_end|>\n' }}
{%- else %}
    {{- '<|im_start|>system\n' }}
    {{- active_system_prompt }}
    {{- '<|im_end|>\n' }}
{%- endif %}

{%- set ns = namespace(
    multi_step_tool=true,
    last_query_index=messages | length - 1
) %}

{%- for message in messages[::-1] %}
    {%- set index = (messages | length - 1) - loop.index0 %}

    {%- if ns.multi_step_tool and message.role == "user" %}
        {%- set content = render_content(message.content, false) | trim %}

        {%- if not (
            content.startswith('<tool_response>')
            and content.endswith('</tool_response>')
        ) %}
            {%- set ns.multi_step_tool = false %}
            {%- set ns.last_query_index = index %}
        {%- endif %}
    {%- endif %}
{%- endfor %}

{%- if ns.multi_step_tool %}
    {{- raise_exception('No user query found in messages.') }}
{%- endif %}

{%- for message in messages %}
    {%- set content = render_content(message.content, true) | trim %}

    {%- if message.role == "system" %}
        {%- if not loop.first %}
            {{- raise_exception(
                'System message must be at the beginning.'
            ) }}
        {%- endif %}

    {%- elif message.role == "user" %}
        {{- '<|im_start|>' }}
        {{- message.role }}
        {{- '\n' }}
        {{- content }}
        {{- '<|im_end|>\n' }}

    {%- elif message.role == "assistant" %}
        {%- set reasoning_content = '' %}

        {%- if message.reasoning_content is string %}
            {%- set reasoning_content = message.reasoning_content %}
        {%- elif '</think>' in content %}
            {%- set reasoning_content = (
                content.split('</think>')[0]
                .rstrip('\n')
                .split('<think>')[-1]
                .lstrip('\n')
            ) %}
            {%- set content = (
                content.split('</think>')[-1]
                .lstrip('\n')
            ) %}
        {%- endif %}

        {%- set reasoning_content = reasoning_content | trim %}

        {%- if loop.index0 > ns.last_query_index %}
            {{- '<|im_start|>' }}
            {{- message.role }}
            {{- '\n<think>\n' }}
            {{- reasoning_content }}
            {{- '\n</think>\n\n' }}
            {{- content }}
        {%- else %}
            {{- '<|im_start|>' }}
            {{- message.role }}
            {{- '\n' }}
            {{- content }}
        {%- endif %}

        {%- if (
            message.tool_calls
            and message.tool_calls is iterable
            and message.tool_calls is not mapping
        ) %}
            {%- for tool_call in message.tool_calls %}
                {%- if tool_call.function is defined %}
                    {%- set tool_call = tool_call.function %}
                {%- endif %}

                {%- if loop.first %}
                    {%- if content | trim %}
                        {{- '\n\n<tool_call>\n<function=' }}
                    {%- else %}
                        {{- '<tool_call>\n<function=' }}
                    {%- endif %}
                {%- else %}
                    {{- '\n<tool_call>\n<function=' }}
                {%- endif %}

                {{- tool_call.name }}
                {{- '>\n' }}

                {%- if tool_call.arguments is defined %}
                    {%- for args_name, args_value
                        in tool_call.arguments | items
                    %}
                        {{- '<parameter=' }}
                        {{- args_name }}
                        {{- '>\n' }}

                        {%- set args_value = (
                            args_value | tojson | safe
                            if args_value is mapping
                            or (
                                args_value is sequence
                                and args_value is not string
                            )
                            else args_value | string
                        ) %}

                        {{- args_value }}
                        {{- '\n</parameter>\n' }}
                    {%- endfor %}
                {%- endif %}

                {{- '</function>\n</tool_call>' }}
            {%- endfor %}
        {%- endif %}

        {{- '<|im_end|>\n' }}

    {%- elif message.role == "tool" %}
        {%- if loop.previtem and loop.previtem.role != "tool" %}
            {{- '<|im_start|>user' }}
        {%- endif %}

        {{- '\n<tool_response>\n' }}
        {{- content }}
        {{- '\n</tool_response>' }}

        {%- if not loop.last and loop.nextitem.role != "tool" %}
            {{- '<|im_end|>\n' }}
        {%- elif loop.last %}
            {{- '<|im_end|>\n' }}
        {%- endif %}

    {%- else %}
        {{- raise_exception('Unexpected message role.') }}
    {%- endif %}
{%- endfor %}

{%- if add_generation_prompt %}
    {{- '<|im_start|>assistant\n' }}

    {%- if enable_thinking is defined and enable_thinking is false %}
        {{- '<think>\n\n</think>\n\n' }}
    {%- else %}
        {{- '<think>\n' }}
    {%- endif %}
{%- endif %}