{%- set image_count = namespace(value=0) -%}
{%- set video_count = namespace(value=0) -%}
{{- '<|begin_of_sentence|>' }}
{%- for message in messages -%}
    {%- if message.role in ['system', 'user'] -%}
        {%- if message.role == 'user' -%}
            {{- 'User: ' -}}
        {%- endif -%}
        {%- if message.content is string -%}
            {{- message.content -}}
        {%- else -%}
            {%- for content_item in message.content -%}
                {%- if content_item.type == 'text' -%}
                    {{- content_item.text -}}
                {%- elif content_item.type in ['image_url', 'image'] -%}
                    {%- set image_count.value = image_count.value + 1 -%}
                    Picture {{ image_count.value }}:<|IMAGE_START|><|image@placeholder|><|IMAGE_END|>
                {%- elif content_item.type in ['video_url', 'video'] -%}
                    {%- set video_count.value = video_count.value + 1 -%}
                    Video {{ video_count.value }}:<|VIDEO_START|><|video@placeholder|><|VIDEO_END|>
                {%- endif -%}
            {%- endfor -%}
        {%- endif -%}
        {%- if message.role == 'system' -%}
            {{- '
' -}}
        {%- endif -%}
    {%- elif message.role == 'assistant' -%}
        {%- macro extract_text_content(content_field) -%}
            {%- if content_field is string -%}
                {{- content_field -}}
            {%- elif content_field is iterable and content_field is not string -%}
                {%- set ns = namespace(text_parts=[]) -%}
                {%- set text_parts = [] -%}
                {%- for item in content_field -%}
                    {%- if item.type == 'text' -%}
                        {%- set ns.text_parts = ns.text_parts + [item.text] -%}
                    {%- endif -%}
                {%- endfor -%}
                {{- ns.text_parts | join('') -}}
            {%- else -%}
                {{- '' -}}
            {%- endif -%}
        {%- endmacro -%}
        {%- set reasoning_content = extract_text_content(message.reasoning_content) -%}
        {%- set content = extract_text_content(message.content) -%}
        {%- if '</think>' in content %}
            {%- set reasoning_content = content.split('</think>')[0].rstrip('
').split('<think>')[-1].lstrip('
') %}
            {%- set content = content.split('</think>')[-1].lstrip('
') %}
        {%- endif %}
        {%- if reasoning_content %}
            {{- '
' + 'Assistant: ' + '<think>
' + reasoning_content.strip('
') + '
</think>

' + content.lstrip('
') }}
        {%- else %}
            {{- '
' + 'Assistant: ' + content }}
        {%- endif %}
        {{- '<|end_of_sentence|>' }}
    {%- endif -%}
{%- endfor -%}
{%- if add_generation_prompt is not defined or add_generation_prompt is true %}
    {{- '
Assistant: ' -}}
    {%- if enable_thinking is defined and enable_thinking is false %}
        {{- '<think>

</think>

' }}
    {%- endif %}
    {%- if enable_thinking is not defined or enable_thinking is true %}
        {{- '<think>' }}
    {%- endif %}
{%- endif %}