{%- if messages | length > 1 -%}
    {{ raise_exception('Embedding models should only embed one message at a time') }}
{%- endif -%}

{% set vars = namespace(parts=[]) %}
{%- for message in messages -%}
    {%- for content in message['content'] -%}
        {%- if content['type'] == 'text' -%}
            {%- set vars.parts = vars.parts + [content['text']] %}
        {%- elif content['type'] == 'image' -%}
            {%- set vars.parts = vars.parts + ['<|image_pad|>'] %}
        {%- endif -%}
    {%- endfor -%}
{%- endfor -%}
{{ vars.parts | join(' ') }}