1{%- if tools %}
 2    {{- '<|im_start|>system\n' }}
 3    {%- if messages[0].role == 'system' %}
 4        {{- messages[0].content + '\n\n' }}
 5    {%- endif %}
 6    {{- "# 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>" }}
 7    {%- for tool in tools %}
 8        {{- "\n" }}
 9        {{- tool | tojson }}
10    {%- endfor %}
11    {{- "\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><|im_end|>\n" }}
12{%- else %}
13    {%- if messages[0].role == 'system' %}
14        {{- '<|im_start|>system\n' + messages[0].content + '<|im_end|>\n' }}
15    {%- endif %}
16{%- endif %}
17{%- set ns = namespace(multi_step_tool=true, last_query_index=messages|length - 1) %}
18{%- for message in messages[::-1] %}
19    {%- set index = (messages|length - 1) - loop.index0 %}
20    {%- if ns.multi_step_tool and message.role == "user" and not(message.content.startswith('<tool_response>') and message.content.endswith('</tool_response>')) %}
21        {%- set ns.multi_step_tool = false %}
22        {%- set ns.last_query_index = index %}
23    {%- endif %}
24{%- endfor %}
25{%- for message in messages %}
26    {%- if (message.role == "user") or (message.role == "system" and not loop.first) %}
27        {{- '<|im_start|>' + message.role + '\n' + message.content + '<|im_end|>' + '\n' }}
28    {%- elif message.role == "assistant" %}
29        {%- set content = message.content %}
30        {%- set reasoning_content = '' %}
31        {%- if message.reasoning_content is defined and message.reasoning_content is not none %}
32            {%- set reasoning_content = message.reasoning_content %}
33        {%- else %}
34            {%- if '</think>' in message.content %}
35                {%- set content = message.content.split('</think>')[-1].lstrip('\n') %}
36                {%- set reasoning_content = message.content.split('</think>')[0].rstrip('\n').split('<think>')[-1].lstrip('\n') %}
37            {%- endif %}
38        {%- endif %}
39        {%- if loop.index0 > ns.last_query_index %}
40            {%- if loop.last or (not loop.last and reasoning_content) %}
41                {{- '<|im_start|>' + message.role + '\n<think>\n' + reasoning_content.strip('\n') + '\n</think>\n\n' + content.lstrip('\n') }}
42            {%- else %}
43                {{- '<|im_start|>' + message.role + '\n' + content }}
44            {%- endif %}
45        {%- else %}
46            {{- '<|im_start|>' + message.role + '\n' + content }}
47        {%- endif %}
48        {%- if message.tool_calls %}
49            {%- for tool_call in message.tool_calls %}
50                {%- if (loop.first and content) or (not loop.first) %}
51                    {{- '\n' }}
52                {%- endif %}
53                {%- if tool_call.function %}
54                    {%- set tool_call = tool_call.function %}
55                {%- endif %}
56                {{- '<tool_call>\n{"name": "' }}
57                {{- tool_call.name }}
58                {{- '", "arguments": ' }}
59                {%- if tool_call.arguments is string %}
60                    {{- tool_call.arguments }}
61                {%- else %}
62                    {{- tool_call.arguments | tojson }}
63                {%- endif %}
64                {{- '}\n</tool_call>' }}
65            {%- endfor %}
66        {%- endif %}
67        {{- '<|im_end|>\n' }}
68    {%- elif message.role == "tool" %}
69        {%- if loop.first or (messages[loop.index0 - 1].role != "tool") %}
70            {{- '<|im_start|>user' }}
71        {%- endif %}
72        {{- '\n<tool_response>\n' }}
73        {{- message.content }}
74        {{- '\n</tool_response>' }}
75        {%- if loop.last or (messages[loop.index0 + 1].role != "tool") %}
76            {{- '<|im_end|>\n' }}
77        {%- endif %}
78    {%- endif %}
79{%- endfor %}
80{%- if add_generation_prompt %}
81    {{- '<|im_start|>assistant\n' }}
82    {%- if enable_thinking is defined and enable_thinking is false %}
83        {{- '<think>\n\n</think>\n\n' }}
84    {%- endif %}
85{%- endif %}