{%- if language is defined and language is not none -%}
    {{- raise_exception("language is a generation-time pin. Pass it to model.generate(), the pipeline, or the API; use language_prefill here to insert a tag.") -}}
{%- endif -%}
{#- ===================================================================================
     Jais-ASR — audio transcription chat template.

     Optional flags (keyword arguments to apply_chat_template, or
     chat_template_kwargs on a server):
       diacritics=True   -> fully diacritized transcript
       code_switch=True  -> keep foreign-language spans verbatim
       language_prefill="EG"     -> prefill the language tag (see the model card)
     An explicit system message always wins over the mode flags.
=================================================================================== -#}
{{- bos_token }}
{#- ---- mode: the system message content is the switch -------------------------- -#}
{%- set _m = namespace(modes='') -%}
{%- if code_switch is defined and code_switch -%}
    {%- set _m.modes = '[Code-switch]' -%}
{%- endif -%}
{%- if diacritics is defined and diacritics -%}
    {%- set _m.modes = (_m.modes ~ ' [Diacritics]') if _m.modes else '[Diacritics]' -%}
{%- endif -%}
{%- set _has_system = messages and messages[0].role == 'system' -%}
{%- if _has_system -%}
    {%- if messages[0].content is string -%}
        {%- set system_content = messages[0].content -%}
    {%- elif messages[0].content -%}
        {%- set _sys = namespace(text='') -%}
        {%- for part in messages[0].content -%}
            {%- if part.type == 'text' -%}
                {%- set _sys.text = _sys.text + part.text -%}
            {%- endif -%}
        {%- endfor -%}
        {%- set system_content = _sys.text -%}
    {%- else -%}
        {%- set system_content = '' -%}
    {%- endif -%}
{%- else -%}
    {%- set system_content = _m.modes -%}
{%- endif -%}
{%- if system_content -%}
    {{- '<|ifm|im_start|>system\n' + system_content + '<|ifm|im_end|>' }}
{%- endif -%}
{#- ---- turns ------------------------------------------------------------------ -#}
{%- for message in messages -%}
    {%- if message.content is string -%}
        {%- set content = message.content -%}
    {%- elif not message.content -%}
        {%- set content = '' -%}
    {%- else -%}
        {#- content parts: {"type": "audio"} renders the audio placeholder,
            which the processor expands -#}
        {%- set _ns = namespace(text='') -%}
        {%- for part in message.content -%}
            {%- if part.type == 'audio' -%}
                {%- set _ns.text = _ns.text + '<|ifm|audio|>' -%}
            {%- elif part.type == 'text' -%}
                {%- set _ns.text = _ns.text + part.text -%}
            {%- else -%}
                {{- raise_exception("audio-only model: unsupported content part type '" ~ part.type ~ "' (use 'audio' or 'text')") -}}
            {%- endif -%}
        {%- endfor -%}
        {%- set content = _ns.text -%}
    {%- endif -%}
    {%- if message.role == 'system' -%}
        {%- if not loop.first -%}
            {{- '<|ifm|im_start|>system\n' + content + '<|ifm|im_end|>' }}
        {%- endif -%}
    {%- elif message.role == 'user' -%}
        {{- '<|ifm|im_start|>user\n' + content + '<|ifm|im_end|>' }}
    {%- elif message.role == 'assistant' -%}
        {%- set thinking = message.reasoning if message.reasoning is defined and message.reasoning is string else '' -%}
        {{- '<|ifm|im_start|>assistant' }}
        {%- generation -%}
        {{- '\n<ifm|think>\n' + thinking + '</ifm|think>' + content }}
        {{- '<|ifm|im_end|>' -}}
        {%- endgeneration -%}
    {%- else -%}
        {{- raise_exception("unsupported role '" ~ message.role ~ "' (use system, user or assistant)") -}}
    {%- endif -%}
{%- endfor -%}
{#- ---- generation prompt ------------------------------------------------------- -#}
{%- if add_generation_prompt -%}
    {%- if enable_thinking is defined and enable_thinking -%}
        {%- if language_prefill is defined and language_prefill -%}
            {{- raise_exception("language_prefill= prefill is not supported with enable_thinking=True: the prefill cannot follow an open think block. Drop language_prefill= or disable thinking.") -}}
        {%- endif -%}
        {{- '<|ifm|im_start|>assistant\n<ifm|think>\n' }}
    {%- else -%}
        {{- '<|ifm|im_start|>assistant\n<ifm|think>\n</ifm|think>' }}
        {#- language_prefill= prefills the decision tag into the prompt: a transcript is then
            guaranteed and [IFM-NoTranscript] cannot be produced. Unset = the model
            decides. To pin a language while keeping abstention, use language.LanguagePin. -#}
        {%- if language_prefill is defined and language_prefill -%}
            {%- set _tags = ['msa','en','fr','es','it','EG','SA','MA','IQ','JO','SY','QA','DZ','LB','OM','YE','TN','MR','KW','SD','LY','AE','PS','BH'] -%}
            {%- if language_prefill not in _tags -%}
                {{- raise_exception("language_prefill must be one of " ~ (_tags | join(', ')) ~ " (got '" ~ language_prefill ~ "'). An ISO code such as 'ar' covers several tags and cannot be prefilled; use the LanguagePin logits processor for that.") -}}
            {%- endif -%}
            {{- '[' ~ language_prefill ~ ']' }}
        {%- endif -%}
    {%- endif -%}
{%- endif -%}