{{ bos_token }}
{%- set has_system = messages and messages[0]['role'] == 'system' -%}
{%- set start_index = 1 if has_system else 0 -%}
{%- set loop_messages = messages[start_index:] -%}

{#- ---- system/tools turn ---- -#}
{%- if has_system or tools -%}
  {{- '<start_of_turn>system\n' -}}
  {%- if has_system -%}
    {%- if messages[0]['content'] is string -%}
      {{- messages[0]['content'] | trim -}}
    {%- elif messages[0]['content'] is iterable -%}
      {%- for item in messages[0]['content'] -%}
        {%- if item['type'] == 'image' -%}
          {{- '<start_of_image>' -}}
        {%- elif item['type'] == 'text' -%}
          {{- item['text'] | trim -}}
        {%- endif -%}
      {%- endfor -%}
    {%- endif -%}
  {%- endif -%}
  {%- if tools -%}
    {%- if has_system -%}
      {{- '\n\n' -}}
    {%- endif -%}
    {{- '# Tools\n\nYou may call one or more functions to assist with the user query.\n\nYou are provided with function signatures within <tools></tools> XML tags:\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>' -}}
  {%- endif -%}
  {{- '<end_of_turn>\n' -}}
{%- endif -%}

{#- ---- main loop ---- -#}
{%- for message in loop_messages -%}
  {%- if message['role'] == 'tool' -%}
    {%- if loop.first or loop_messages[loop.index0 - 1]['role'] != 'tool' -%}
      {{- '<start_of_turn>user\n' -}}
    {%- endif -%}
    {{- '<tool_response>\n' -}}
    {%- if message['content'] is string -%}
      {{- message['content'] | trim -}}
    {%- elif message['content'] is iterable -%}
      {%- for item in message['content'] -%}
        {%- if item['type'] == 'image' -%}
          {{- '<start_of_image>' -}}
        {%- elif item['type'] == 'text' -%}
          {{- item['text'] | trim -}}
        {%- endif -%}
      {%- endfor -%}
    {%- endif -%}
    {{- '\n</tool_response>\n' -}}
    {%- if loop.last or loop_messages[loop.index0 + 1]['role'] != 'tool' -%}
      {{- '<end_of_turn>\n' -}}
    {%- endif -%}
  {%- else -%}
    {%- set role = 'model' if message['role'] == 'assistant' else message['role'] -%}
    {{- '<start_of_turn>' + role + '\n' -}}
    {%- if message['content'] is string -%}
      {{- message['content'] | trim -}}
    {%- elif message['content'] is iterable -%}
      {%- for item in message['content'] -%}
        {%- if item['type'] == 'image' -%}
          {{- '<start_of_image>' -}}
        {%- elif item['type'] == 'text' -%}
          {{- item['text'] | trim -}}
        {%- endif -%}
      {%- endfor -%}
    {%- endif -%}
    {%- if message['role'] == 'assistant' and message.get('tool_calls') -%}
      {%- for tc0 in message['tool_calls'] -%}
        {%- set tc = tc0['function'] if tc0.get('function') else tc0 -%}
        {{- '\n<tool_call>\n{"name": "' + tc['name'] + '", "arguments": ' -}}
        {%- if tc['arguments'] is string -%}
          {{- tc['arguments'] -}}
        {%- else -%}
          {{- tc['arguments'] | tojson -}}
        {%- endif -%}
        {{- '}\n</tool_call>' -}}
      {%- endfor -%}
    {%- endif -%}
    {{- '<end_of_turn>\n' -}}
  {%- endif -%}
{%- endfor -%}

{#- ---- generation prompt ---- -#}
{%- if add_generation_prompt -%}
  {{- '<start_of_turn>model\n' -}}
{%- endif -%}