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/dbpg_test.go

@@ -1,6 +1,7 @@
 package server
 
 import (
+	"database/sql"
 	"encoding/json"
 	"os"
 	"testing"
@@ -29,9 +30,11 @@ func TestPostgres(t *testing.T) {
 	if _, err := s.saveSSHHost(a.ID, savedHost{Label: "web", Host: "h", Port: 22, User: "root", Auth: "password"}, sshSecret{Password: "pw"}); err != nil {
 		t.Fatal(err)
 	}
-	s.aiAppend(a.ID, "user", "привет")
+	chat := s.aiNewChat(a.ID)
+	s.aiAppendTo(a.ID, chat, "user", "привет")
 	_ = s.db.SetUserAgents(a.ID, []string{"x1"})
 
+	pgReset(t, c)
 	pg, err := OpenPostgres(c, s.db.path)
 	if err != nil {
 		t.Fatal(err)
@@ -58,7 +61,7 @@ func TestPostgres(t *testing.T) {
 	if err := p.fillSaved(a.ID, tg); err != nil || tg.Password != "pw" {
 		t.Fatalf("saved host: %+v %v", tg, err)
 	}
-	if h := p.aiHistory(a.ID, 10); len(h) != 1 || h[0].Content != "привет" {
+	if h := p.aiHistoryOf(a.ID, chat, 10); len(h) != 1 || h[0].Content != "привет" {
 		t.Fatalf("talk: %+v", h)
 	}
 	// New rows go on after the copied ids.
@@ -78,8 +81,50 @@ func TestPostgres(t *testing.T) {
 	if err := pg.SetUserAgents(id, []string{"x1", "x1"}); err != nil {
 		t.Fatalf("grants: %v", err)
 	}
-	p.aiAppend(a.ID, "assistant", "ответ")
-	if h := p.aiHistory(a.ID, 10); len(h) != 2 {
+	p.aiAppendTo(a.ID, chat, "assistant", "ответ")
+	if h := p.aiHistoryOf(a.ID, chat, 10); len(h) != 2 {
 		t.Fatalf("talk after: %+v", h)
 	}
 }
+
+// Chats on PostgreSQL: past the limit the oldest go.
+func TestPostgresChats(t *testing.T) {
+	raw := os.Getenv("LPRA_TEST_PG")
+	if raw == "" {
+		t.Skip("LPRA_TEST_PG not set")
+	}
+	var c PGConf
+	_ = json.Unmarshal([]byte(raw), &c)
+	s, _ := newTestServer(t)
+	pgReset(t, c)
+	pg, err := OpenPostgres(c, s.db.path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer pg.Close()
+	defer func() {
+		for i := len(copyTables) - 1; i >= 0; i-- {
+			_, _ = pg.sql.Exec(`DROP TABLE IF EXISTS ` + copyTables[i] + ` CASCADE`)
+		}
+	}()
+	p := &Server{db: pg}
+	a, _ := pg.AdminByUsername("adm")
+	for i := 0; i < aiChatsKeep+3; i++ {
+		p.aiAppendTo(a.ID, p.aiNewChat(a.ID), "user", "q")
+	}
+	if n := len(p.aiChats(a.ID)); n != aiChatsKeep {
+		t.Fatalf("chats kept: %d", n)
+	}
+}
+
+// pgReset empties the test database: the copy runs only into an empty one.
+func pgReset(t *testing.T, c PGConf) {
+	d, err := sql.Open("pgx", c.DSN())
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer d.Close()
+	for i := len(copyTables) - 1; i >= 0; i-- {
+		_, _ = d.Exec(`DROP TABLE IF EXISTS ` + copyTables[i] + ` CASCADE`)
+	}
+}