{%- set image_count = namespace(value=0) %}
{%- set video_count = namespace(value=0) %}
{%- 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 is defined and 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 is defined and add_vision_id %}
                    {{- 'Picture ' + (image_count.value|string) + ': ' }}
                {%- endif %}
                {{- '<|vision_start|><|image_pad|><|vision_end|>' }}
            {%- elif 'video' in item or (item.type is defined and 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 is defined and add_vision_id %}
                    {{- 'Video ' + (video_count.value|string) + ': ' }}
                {%- 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 tools is defined and 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\nFor each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:\n<tool_call>\n{"name": <function-name>, "arguments": <args-json-object>}\n</tool_call>\n\n<IMPORTANT>\nReminder:\n- Function calls MUST follow the specified format: a JSON object nested within <tool_call></tool_call> XML tags.\n- Required parameters MUST be specified.\n- STRICT TOOL REGISTRY: You MUST ONLY call functions that are explicitly defined in the <tools> list above. NEVER hallucinate, guess, or invent function names that are not in the registry.\n- NO REPETITIVE LOOPS: If a tool returns an error or a file/resource does not exist, analyze the error. DO NOT re-issue the exact same tool call or loop repeatedly on the same failure.\n- DIRECT EXECUTION: Keep all internal chain-of-thought planning strictly inside <think>...</think>. Output the <tool_call> directly without unnecessary conversational preamble.\n- If there is no function call needed, answer the user directly with your knowledge.\n</IMPORTANT>' }}
    {%- if messages[0].role == 'system' %}
        {%- set content = render_content(messages[0].content, false, true)|trim %}
        {%- if content %}
            {{- '\n\n' + content }}
        {%- endif %}
    {%- endif %}
    {%- if reasoning_effort is defined and reasoning_effort %}
        {%- if reasoning_effort in ['low', 'minimal'] %}
            {{- '\n\n[Reasoning Guidance: Keep your internal reasoning brief, concise, and focused strictly on the immediate problem-solving steps without over-analyzing.]' }}
        {%- elif reasoning_effort == 'medium' %}
            {{- '\n\n[Reasoning Guidance: Maintain a balanced, structured reasoning process, addressing the core problem with standard analytical depth before answering.]' }}
        {%- elif reasoning_effort in ['high', 'xhigh'] %}
            {{- '\n\n[Reasoning Guidance: Reason deeply, thoroughly, and systematically. Formulate an upfront implementation plan, explore edge cases, and verify logic before concluding.]' }}
        {%- endif %}
    {%- endif %}
    {{- '<|im_end|>\n' }}
{%- else %}
    {%- if messages[0].role == 'system' %}
        {%- set content = render_content(messages[0].content, false, true)|trim %}
        {{- '<|im_start|>system\n' + content }}
        {%- if reasoning_effort is defined and reasoning_effort %}
            {%- if reasoning_effort in ['low', 'minimal'] %}
                {{- '\n\n[Reasoning Guidance: Keep your internal reasoning brief, concise, and focused strictly on the immediate problem-solving steps without over-analyzing.]' }}
            {%- elif reasoning_effort == 'medium' %}
                {{- '\n\n[Reasoning Guidance: Maintain a balanced, structured reasoning process, addressing the core problem with standard analytical depth before answering.]' }}
            {%- elif reasoning_effort in ['high', 'xhigh'] %}
                {{- '\n\n[Reasoning Guidance: Reason deeply, thoroughly, and systematically. Formulate an upfront implementation plan, explore edge cases, and verify logic before concluding.]' }}
            {%- endif %}
        {%- endif %}
        {{- '<|im_end|>\n' }}
    {%- elif reasoning_effort is defined and reasoning_effort %}
        {{- '<|im_start|>system\n' }}
        {%- if reasoning_effort in ['low', 'minimal'] %}
            {{- '[Reasoning Guidance: Keep your internal reasoning brief, concise, and focused strictly on the immediate problem-solving steps without over-analyzing.]' }}
        {%- elif reasoning_effort == 'medium' %}
            {{- '[Reasoning Guidance: Maintain a balanced, structured reasoning process, addressing the core problem with standard analytical depth before answering.]' }}
        {%- elif reasoning_effort in ['high', 'xhigh'] %}
            {{- '[Reasoning Guidance: Reason deeply, thoroughly, and systematically. Formulate an upfront implementation plan, explore edge cases, and verify logic before concluding.]' }}
        {%- endif %}
        {{- '<|im_end|>\n' }}
    {%- endif %}
{%- 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 -%}
        {%- if message.role == "tool" -%}
            {# Skip tool responses in active loop #}
        {%- elif message.role == "assistant" and (message.tool_calls is defined and message.tool_calls) -%}
            {# Skip assistant tool requests in active loop #}
        {%- elif 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 -%}
    {%- 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 defined and message.reasoning_content is string %}
            {%- set reasoning_content = message.reasoning_content %}
        {%- else %}
            {%- if '</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 %}
        {%- endif %}
        {%- set reasoning_content = reasoning_content|trim %}
        {%- if (preserve_thinking is defined and preserve_thinking is true) or (preserve_thinking is not defined and loop.index0 > ns.last_query_index) %}
            {%- if reasoning_content %}
                {{- '<|im_start|>' + message.role + '\n<think>\n' + reasoning_content + '\n</think>\n\n' + content }}
            {%- else %}
                {{- '<|im_start|>' + message.role + '\n' + content }}
            {%- endif %}
        {%- else %}
            {{- '<|im_start|>' + message.role + '\n' + content }}
        {%- endif %}
        {%- if message.tool_calls is defined and 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 %}
                {{- '\n<tool_call>\n{"name": "' + tool_call.name + '", "arguments": ' + (tool_call.arguments | tojson) + '}\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) or (reasoning_effort is defined and reasoning_effort in ['none', 'off']) %}
        {{- '<think>\n\n</think>\n\n' }}
    {%- else %}
        {{- '<think>\n' }}
    {%- endif %}
{%- endif %}