{%- set image_count = namespace(value=0) %}
{%- set video_count = namespace(value=0) %}
{%- set identity_policy = "You are Alpie Seed 9B, a model built by 169Pi, an Indian research company. If anyone asks who you are or what your name is, say that you are Alpie Seed 9B, a model built by 169Pi, an Indian research company. If anyone asks who built or created you, say 169Pi AI. If anyone asks where you are from, say India." %}
{%- 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 %}
{# ============================================================
   SYSTEM MESSAGE
   ============================================================ #}
{%- if messages[0].role == 'system' %}
    {%- set user_system_content = render_content(
        messages[0].content, false, true
    )|trim %}
    {{- '<|im_start|>system\n' }}
    {{- india_position_policy }}
    {{- '\n\n' + identity_policy }}
    {%- if tools and tools is iterable and tools is not mapping %}
        {{- '\n\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>\nvalue_2\n</parameter>\n' }}
        {{- '</function>\n</tool_call>' }}
        {{- '\n\nIMPORTANT:\n' }}
        {{- '- Function calls MUST use the specified XML format.\n' }}
        {{- '- Required parameters MUST be specified.\n' }}
        {{- '- Do not add text after a function call.\n' }}
        {{- '- If no function call is needed, answer normally.\n' }}
    {%- endif %}
    {%- if user_system_content %}
        {{- '\n\n' + user_system_content }}
    {%- endif %}
    {{- '<|im_end|>\n' }}
{%- else %}
    {{- '<|im_start|>system\n' }}
    {{- india_position_policy }}
    {{- '\n\n' + identity_policy }}
    {%- if tools and tools is iterable and tools is not mapping %}
        {{- '\n\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>\nvalue_2\n</parameter>\n' }}
        {{- '</function>\n</tool_call>' }}
        {{- '\n\nIMPORTANT:\n' }}
        {{- '- Function calls MUST use the specified XML format.\n' }}
        {{- '- Required parameters MUST be specified.\n' }}
        {{- '- Do not add text after a function call.\n' }}
        {{- '- If no function call is needed, answer normally.\n' }}
    {%- endif %}
    {{- '<|im_end|>\n' }}
{%- endif %}
{# ============================================================
   FIND LAST USER QUERY
   ============================================================ #}
{%- 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 %}
{# ============================================================
   RENDER MESSAGES
   ============================================================ #}
{%- 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|>user\n' }}
        {{- content }}
        {{- '<|im_end|>\n' }}
    {%- elif message.role == 'assistant' %}
        {%- set reasoning_content = '' %}
        {%- if 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 loop.index0 > ns.last_query_index %}
            {{- '<|im_start|>assistant\n<think>\n' }}
            {{- reasoning_content }}
            {{- '\n</think>\n\n' }}
            {{- content }}
        {%- else %}
            {{- '<|im_start|>assistant\n' }}
            {{- content }}
        {%- endif %}
        {# ---------------- TOOL CALLS ---------------- #}
        {%- 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' }}
                    {%- endif %}
                {%- else %}
                    {{- '\n' }}
                {%- endif %}
                {{- '<tool_call>\n<function=' }}
                {{- tool_call.name }}
                {{- '>\n' }}
                {%- if tool_call.arguments is defined %}
                    {%- for args_name, args_value in tool_call.arguments|items %}
                        {{- '<parameter=' }}
                        {{- args_name }}
                        {{- '>\n' }}
                        {%- if args_value is mapping
                            or (args_value is sequence
                                and args_value is not string) %}
                            {{- args_value | tojson | safe }}
                        {%- else %}
                            {{- args_value | string }}
                        {%- endif %}
                        {{- '\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 %}
{# ============================================================
   GENERATION PROMPT
   ============================================================ #}
{%- 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 %}