feat(chat): 打通场景对话与结果展示

apps/chat/__init__.py

@@ -0,0 +1 @@
+

apps/chat/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class ChatConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "apps.chat"

apps/chat/forms.py

@@ -0,0 +1,30 @@
+from django import forms
+
+
+class ChatForm(forms.Form):
+    message = forms.CharField(
+        label="问题",
+        max_length=4000,
+        error_messages={
+            "required": "请输入要咨询的问题。",
+            "max_length": "问题过长，请控制在 4000 字以内。",
+        },
+        widget=forms.Textarea(attrs={"rows": 6}),
+    )
+    document_ids = forms.MultipleChoiceField(
+        label="文档范围",
+        required=False,
+        choices=(),
+        widget=forms.CheckboxSelectMultiple,
+        error_messages={"invalid_choice": "请选择当前场景下已入库的文档。"},
+    )
+
+    def __init__(self, *args, documents=None, **kwargs):
+        super().__init__(*args, **kwargs)
+        documents = documents or []
+        self.fields["document_ids"].choices = [
+            (str(document.id), document.original_name) for document in documents
+        ]
+
+    def clean_document_ids(self):
+        return [int(document_id) for document_id in self.cleaned_data.get("document_ids", [])]

apps/chat/urls.py

@@ -0,0 +1,10 @@
+from django.urls import path
+
+from . import views
+
+
+app_name = "chat"
+
+urlpatterns = [
+    path("<str:scenario_id>/", views.index, name="index"),
+]

apps/chat/views.py

@@ -0,0 +1,56 @@
+from django.shortcuts import render
+
+from agent_core.orchestrator import run_agent
+from agent_core.results import AgentResult
+from apps.audit.services import create_audit_log
+from apps.documents.models import UploadedDocument
+from apps.scenarios.services import ScenarioNotFound, get_scenario
+
+from .forms import ChatForm
+
+
+def index(request, scenario_id: str):
+    try:
+        scenario = get_scenario(scenario_id)
+    except ScenarioNotFound:
+        return render(
+            request,
+            "chat/index.html",
+            {
+                "scenario": None,
+                "form": ChatForm(),
+                "error": "场景不存在，请返回首页检查配置。",
+            },
+            status=404,
+        )
+
+    result = None
+    audit_log = None
+    documents = UploadedDocument.objects.filter(
+        scenario_id=scenario["id"],
+        status=UploadedDocument.STATUS_INDEXED,
+    )
+    form = ChatForm(request.POST or None, documents=documents)
+    if request.method == "POST" and form.is_valid():
+        message = form.cleaned_data["message"]
+        try:
+            result = run_agent(
+                scenario,
+                message,
+                options={"document_ids": form.cleaned_data["document_ids"]},
+            )
+        except Exception as exc:
+            result = AgentResult(status="failed", error=str(exc), answer="")
+        audit_log = create_audit_log(scenario["id"], scenario["name"], message, result)
+
+    return render(
+        request,
+        "chat/index.html",
+        {
+            "scenario": scenario,
+            "form": form,
+            "documents": documents,
+            "result": result,
+            "audit_log": audit_log,
+        },
+    )