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from helpers.api import ApiHandler, Request, Response
from helpers import defer, files, plugins
from helpers.extension import call_extensions_async
from helpers.persist_chat import _write_atomic, save_tmp_chat
from agent import AgentContext
from plugins._model_config.api.model_override import _notify_model_override_changed
from plugins._model_config.helpers import model_config
def _rename_preset_references(renames: object) -> None:
if not isinstance(renames, list):
return
mapping = {
str(item.get("from") or "").strip().casefold(): str(item.get("to") or "").strip()
for item in renames
if isinstance(item, dict)
and str(item.get("from") or "").strip()
and str(item.get("to") or "").strip()
}
mapping.pop(model_config.DEFAULT_PRESET_NAME.casefold(), None)
if not mapping:
return
assets = plugins.find_plugin_assets(
plugins.CONFIG_FILE_NAME,
plugin_name="_model_config",
project_name="*",
agent_profile="*",
only_first=False,
)
for asset in assets:
path = str(asset.get("path") or "")
try:
config = json.loads(files.read_file(path))
except Exception:
continue
if not isinstance(config, dict):
continue
selected = str(config.get(model_config.MODEL_PRESET_CONFIG_KEY) or "").strip()
replacement = mapping.get(selected.casefold())
if replacement:
config[model_config.MODEL_PRESET_CONFIG_KEY] = replacement
files.write_file(path, json.dumps(config))
# Chats are lazy-loaded, so update durable references as well as live
# AgentContext objects. Otherwise renaming a preset would silently send an
# unopened chat back to Default the next time it is loaded.
loaded_context_ids = {str(context.id) for context in AgentContext.all()}
chat_paths = files.find_existing_paths_by_pattern(
files.get_abs_path("usr", "chats", "*", "chat.json")
)
for path in chat_paths:
chat_id = files.basename(files.dirname(path))
if chat_id in loaded_context_ids:
continue
try:
chat = json.loads(files.read_file(path))
except Exception:
continue
data = chat.get("data") if isinstance(chat, dict) else None
override = data.get("chat_model_override") if isinstance(data, dict) else None
selected = str(override.get("preset_name") or "").strip() if isinstance(override, dict) else ""
replacement = mapping.get(selected.casefold())
if not replacement:
continue
data["chat_model_override"] = {"preset_name": replacement}
_write_atomic(path, json.dumps(chat, ensure_ascii=False))
for context in AgentContext.all():
override = context.get_data("chat_model_override")
if not isinstance(override, dict):
continue
selected = str(override.get("preset_name") or "").strip()
replacement = mapping.get(selected.casefold())
if not replacement:
continue
context.set_data("chat_model_override", {"preset_name": replacement})
save_tmp_chat(context)
_notify_model_override_changed(context)
def _retired_preset_references(
previous_names: set[str],
saved_names: set[str],
) -> list[dict[str, str]]:
saved_by_casefold = {name.casefold(): name for name in saved_names}
return [
{
"from": name,
"to": saved_by_casefold.get(
name.casefold(),
model_config.DEFAULT_PRESET_NAME,
),
}
for name in previous_names - saved_names
]
def _embedding_signature(preset: dict | None):
if not isinstance(preset, dict):
return {}
default = model_config.resolve_preset(model_config.DEFAULT_PRESET_NAME) or {}
config = model_config.preset_to_config(default)
if str(preset.get("name") or "") != model_config.DEFAULT_PRESET_NAME:
config = model_config.build_config_from_preset(
preset,
config,
strip_api_key=False,
)
embedding = config.get("embedding_model")
return embedding if isinstance(embedding, dict) else {}
def _notify_embedding_changed() -> None:
defer.DeferredTask().start_task(call_extensions_async, "embedding_model_changed")
class ModelPresets(ApiHandler):
async def process(self, input: dict, request: Request) -> dict | Response:
action = input.get("action", "get")
project_name = str(input.get("project_name") or "").strip()
agent_profile = str(input.get("agent_profile") or "").strip()
context_id = str(input.get("context_id") or "").strip()
scope = str(input.get("scope") or "").strip()
if action == "get":
if scope == "project":
return {"ok": True, "presets": []}
presets = model_config.get_presets()
context = AgentContext.get(context_id) if context_id else None
if context:
configured = model_config.get_configured_preset_name(agent=context.agent0)
selected = model_config.get_effective_preset_name(context.agent0)
else:
configured = model_config.get_configured_preset_name(
project_name=project_name or None,
agent_profile=agent_profile or None,
)
selected = configured
return {
"ok": True,
"presets": presets,
"global_presets": presets,
"project_presets": [],
"configured_preset": configured,
"selected_preset": selected,
}
elif action == "save":
presets = input.get("presets")
if not isinstance(presets, list):
return Response(status=400, response="presets must be an array")
if scope == "project" or project_name:
return Response(
status=400,
response="Preset definitions are global; select a global preset for this project.",
)
previous_names = {
str(preset.get("name") or "") for preset in model_config.get_presets()
}
previous_embeddings = {
str(preset.get("name") or ""): _embedding_signature(preset)
for preset in model_config.get_presets()
}
try:
model_config.save_presets(presets)
except ValueError as exc:
return Response(status=400, response=str(exc))
saved_names = {
str(preset.get("name") or "") for preset in model_config.get_presets()
}
retired = _retired_preset_references(previous_names, saved_names)
renames = input.get("renames") if isinstance(input.get("renames"), list) else []
_rename_preset_references([*retired, *renames])
saved_embeddings = {
str(preset.get("name") or ""): _embedding_signature(preset)
for preset in model_config.get_presets()
}
if previous_embeddings != saved_embeddings:
_notify_embedding_changed()
return {"ok": True, "presets": model_config.get_presets()}
elif action == "reset":
if scope == "project" or project_name:
return Response(status=400, response="Project presets cannot be reset.")
previous = model_config.get_presets()
previous_embeddings = {
str(preset.get("name") or ""): _embedding_signature(preset)
for preset in previous
}
presets = model_config.reset_presets()
saved_names = {str(preset.get("name") or "") for preset in presets}
previous_names = {str(preset.get("name") or "") for preset in previous}
retired = _retired_preset_references(previous_names, saved_names)
_rename_preset_references(retired)
current_embeddings = {
str(preset.get("name") or ""): _embedding_signature(preset)
for preset in presets
}
if previous_embeddings != current_embeddings:
_notify_embedding_changed()
return {"ok": True, "presets": presets}
elif action == "select":
name = str(input.get("name") or "").strip()
preset = model_config.resolve_preset(name)
if not preset:
return Response(status=404, response=f"Preset '{name}' not found")
canonical_name = str(preset.get("name") or model_config.DEFAULT_PRESET_NAME)
context = AgentContext.get(context_id) if context_id else None
previous_embedding = (
model_config.get_embedding_model_config(context.agent0)
if context
else None
)
previous_name = (
model_config.get_effective_preset_name(context.agent0)
if context
else model_config.get_configured_preset_name(
project_name=project_name or None,
agent_profile=agent_profile or None,
)
)
previous = model_config.resolve_preset(previous_name)
plugins.save_plugin_config(
"_model_config",
project_name,
agent_profile,
{model_config.MODEL_PRESET_CONFIG_KEY: canonical_name},
)
if context:
context.set_data("chat_model_override", {"preset_name": canonical_name})
save_tmp_chat(context)
_notify_model_override_changed(context)
current_embedding = (
model_config.get_embedding_model_config(context.agent0)
if context
else _embedding_signature(preset)
)
if (previous_embedding or _embedding_signature(previous)) != current_embedding:
_notify_embedding_changed()
return {"ok": True, "selected_preset": canonical_name}
elif action == "resolve":
name = str(input.get("name") or "").strip()
if not name:
return Response(status=400, response="Missing preset name")
resolved = model_config.resolve_preset(name)
if not resolved:
return Response(status=404, response=f"Preset '{name}' not found")
return {
"ok": True,
"preset": {
**resolved,
"scope": "global",
"project_name": "",
},
}
return Response(status=400, response=f"Unknown action: {action}")
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