feat: the assistant keeps several chats - the current one named in the header, the list under its arrow to open or delete; actions as compact cards; folding parts open smoothly

internal/server/ai_test.go

@@ -7,6 +7,7 @@ import (
 	"io"
 	"net/http"
 	"net/http/httptest"
+	"strconv"
 	"strings"
 	"testing"
 )
@@ -147,7 +148,11 @@ func TestAIChatNeedsUserOn(t *testing.T) {
 		t.Fatalf("on: %d %q", w.Code, b)
 	}
 	// The talk is kept: the question and the answer.
-	if h := s.aiHistory(a.ID, 10); len(h) != 2 || h[0].Content != "hi" || h[1].Content != "ok" {
+	cs := s.aiChats(a.ID)
+	if len(cs) != 1 || cs[0].Title != "hi" || w.Header().Get("X-Chat-Id") != strconv.FormatInt(cs[0].ID, 10) {
+		t.Fatalf("chats: %+v %q", cs, w.Header().Get("X-Chat-Id"))
+	}
+	if h := s.aiHistoryOf(a.ID, cs[0].ID, 10); len(h) != 2 || h[0].Content != "hi" || h[1].Content != "ok" {
 		t.Fatalf("history: %+v", h)
 	}
 }
@@ -200,3 +205,33 @@ func TestStripThink(t *testing.T) {
 		t.Fatalf("%q", got)
 	}
 }
+
+// Several talks: each its own messages; a new one is named by its first
+// question; deleting one leaves the others.
+func TestAIChats(t *testing.T) {
+	s, _ := newTestServer(t)
+	a, _ := s.db.AdminByUsername("adm")
+	one := s.aiNewChat(a.ID)
+	two := s.aiNewChat(a.ID)
+	s.aiAppendTo(a.ID, one, "user", "первый вопрос про nginx и его настройки, длинный-длинный")
+	s.aiAppendTo(a.ID, two, "user", "второй")
+	if h := s.aiHistoryOf(a.ID, one, 10); len(h) != 1 || h[0].Content[:5] != "перв"[:5] {
+		t.Fatalf("one: %+v", h)
+	}
+	list := s.aiChats(a.ID)
+	if len(list) != 2 || list[0].ID != two || !strings.HasPrefix(list[1].Title, "первый вопрос") || len([]rune(list[1].Title)) > 41 {
+		t.Fatalf("list: %+v", list)
+	}
+	s.aiDeleteChat(a.ID, one)
+	if list = s.aiChats(a.ID); len(list) != 1 || len(s.aiHistoryOf(a.ID, one, 10)) != 0 {
+		t.Fatalf("after delete: %+v", list)
+	}
+	// Another user sees none of them and cannot write into them.
+	if len(s.aiChats(a.ID+1)) != 0 {
+		t.Fatal("another user sees the talks")
+	}
+	s.aiAppendTo(a.ID+1, two, "user", "чужое")
+	if len(s.aiHistoryOf(a.ID, two, 10)) != 1 {
+		t.Fatal("another user wrote into the talk")
+	}
+}