{%- if not is_appending_to_prefill -%}
    {{ bos_token }}
    {%- if tools %}
        {{- '<start_of_turn>system\n' }}
        {%- for tool in tools %}
            {{- tool | trim }}
            {{- "\n\n" }}
        {%- endfor %}
        {{- '<end_of_turn>\n'}}
    {%- endif %}
    {%- if messages[0]['role'] == 'system' -%}
        {%- if messages[0]['content'] is string -%}
            {%- set first_user_prefix = messages[0]['content'] + '\n\n' -%}
        {%- else -%}
            {%- set first_user_prefix = messages[0]['content'][0]['text'] + '\n\n' -%}
        {%- endif -%}
        {%- set loop_messages = messages[1:] -%}
    {%- else -%}
        {%- set first_user_prefix = "" -%}
        {%- set loop_messages = messages -%}
    {%- endif -%}
    {%- for message in loop_messages -%}
        {%- if (message['role'] == 'assistant') -%}
            {%- set role = "model" -%}
        {%- elif (message['role'] == 'tool') -%}
            {%- set is_tool = True -%}
            {%- set role = "user" -%}
        {%- else -%}
            {%- set role = message['role'] -%}
        {%- endif -%}
        {{ '<start_of_turn>' + role + '\n' + (first_user_prefix if loop.first else "") }}
        {%- if is_tool -%}
            {{ '```tool_outputs\n' }}
        {%- endif -%}
        {%- if 'content' in message -%}
            {%- if message['content'] is string -%}
                {{ message['content'] | trim }}
            {%- elif message['content'] is iterable -%}
                {%- for item in message['content'] -%}
                    {%- if item['type'] == 'audio' -%}
                        {{ '<audio_soft_token>' }}
                    {%- elif item['type'] == 'image' -%}
                        {{ '<image_soft_token>' }}
                    {%- elif item['type'] == 'text' -%}
                        {{ item['text'] | trim }}
                    {%- endif -%}
                    {%- if is_tool -%}
                        {{ '\n' }}
                    {%- endif -%}
                {%- endfor -%}
            {%- else -%}
                {{ raise_exception("Invalid content type") }}
            {%- endif -%}
        {%- endif -%}
        {%- if is_tool -%}
            {{ '```' }}
            {%- set is_tool = False -%}
        {%- endif -%}
        {%- if 'tool_calls' in message -%}
            {{- '```tool_code\n' -}}
            {%- for tool_call in message['tool_calls'] -%}
                {%- if 'function' in tool_call -%}
                    {%- set tool_call = tool_call['function'] -%}
                {%- endif -%}
                {{-  tool_call['name'] + '(' -}}
                {%- if 'arguments' in tool_call -%}
                    {%- for key in tool_call['arguments'] -%}
                        {{- key + '=' + tool_call['arguments'][key] -}}
                        {% if not loop.last %}
                            {{- ', ' -}}
                        {% endif %}
                    {%- endfor %}
                {{- ')\n' -}}
                {%- endif -%}
            {%- endfor -%}
            {{- '```' -}}
        {%- endif -%}
        {{'<end_of_turn>\n'}}
    {%- endfor -%}
{%- else -%}
    {%- if (message['role'] == 'assistant') -%}
        {%- set role = "model" -%}
    {%- elif (message['role'] == 'tool') -%}
        {%- set is_tool = True -%}
        {%- set role = "user" -%}
    {%- elif (message['role'] == 'system') -%}
        {%- set is_system = True -%}
        {%- set role = "user" -%}
    {%- else -%}
        {%- set role = message['role'] -%}
    {%- endif -%}
    {%- if is_first_part -%}
        {{ '<start_of_turn>' + role + '\n' }}
        {%- if is_tool -%}
            {{ '```tool_outputs\n' }}
        {%- endif -%}
    {%- endif -%}
    {%- if 'content' in message -%}
        {%- if message['content'] is string -%}
            {{ message['content'] }}
            {%- if is_system -%}
                {{- '\n\n' -}}
            {%- endif -%}
        {%- elif message['content'] is iterable -%}
            {%- for item in message['content'] -%}
                {%- if item['type'] == 'audio' -%}
                    {{ '<audio_soft_token>' }}
                {%- elif item['type'] == 'image' -%}
                    {{ '<image_soft_token>' }}
                {%- elif item['type'] == 'text' -%}
                    {{ item['text'] }}
                {%- endif -%}
                {%- if is_tool -%}
                    {{ '\n' }}
                {%- endif -%}
                {%- if is_system and loop.last -%}
                    {{- '\n\n' -}}
                {%- endif -%}
            {%- endfor -%}
        {%- else -%}
            {{ raise_exception("Invalid content type") }}
        {%- endif -%}
    {%- endif -%}
    {%- if 'tool_calls' in message -%}
        {{- '```tool_code\n' -}}
        {%- for tool_call in message['tool_calls'] -%}
            {%- if 'function' in tool_call -%}
                {%- set tool_call = tool_call['function'] -%}
            {%- endif -%}
            {{-  tool_call['name'] + '(' -}}
            {%- if 'arguments' in tool_call -%}
                {%- for key in tool_call['arguments'] -%}
                    {{- key + '=' + tool_call['arguments'][key] -}}
                    {% if not loop.last %}
                        {{- ', ' -}}
                    {% endif %}
                {%- endfor %}
            {{- ')\n' -}}
            {%- endif -%}
        {%- endfor -%}
        {{- '```' -}}
    {%- endif -%}
    {%- if is_last_part -%}
        {%- if is_tool -%}
            {{ '\n```' }}
        {%- endif -%}
        {{ '<end_of_turn>\n' }}
    {%- endif -%}
{%- endif %}
{%- if add_generation_prompt -%}
    {{'<start_of_turn>model\n'}}
{%- endif -%}