platform: modularize api/gui, add docs-tests-web foundation, and refresh root config

selective-vpn-api/app/trace_handlers_read.go

@@ -0,0 +1,92 @@
+package app
+
+import (
+	"io"
+	"net/http"
+	"strings"
+)
+
+func handleTraceTailPlain(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+	lines := tailFile(traceLogPath, defaultTraceTailMax)
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	_, _ = io.WriteString(w, strings.Join(lines, "\n"))
+}
+
+// ---------------------------------------------------------------------
+// trace-json
+// ---------------------------------------------------------------------
+
+// GET /api/v1/trace-json?mode=full|gui|events|smartdns
+func handleTraceJSON(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+	mode := strings.ToLower(strings.TrimSpace(r.URL.Query().Get("mode")))
+	if mode == "" {
+		mode = "full"
+	}
+	if mode == "events" {
+		mode = "gui"
+	}
+
+	var lines []string
+
+	switch mode {
+	case "smartdns":
+		// чисто SmartDNS-лог
+		lines = tailFile(smartdnsLogPath, defaultTraceTailMax)
+
+	case "gui":
+		// Events: только человеко-читабельные события/ошибки/команды.
+		full := tailFile(traceLogPath, defaultTraceTailMax)
+		allow := []string{
+			"[gui]", "[info]", "[login]", "[vpn]", "[event]", "[error]",
+		}
+		for _, l := range full {
+			ll := strings.ToLower(l)
+
+			// берём только наши "человеческие" префиксы
+			ok := false
+			for _, a := range allow {
+				if strings.Contains(ll, strings.ToLower(a)) {
+					ok = true
+					break
+				}
+			}
+			if !ok {
+				// если префикса нет, но это похоже на ошибку — тоже включаем
+				if strings.Contains(ll, "error") || strings.Contains(ll, "failed") || strings.Contains(ll, "timeout") {
+					ok = true
+				}
+			}
+			if !ok {
+				continue
+			}
+
+			// режем шум от резолвера/маршрутов/массовых вставок
+			if strings.Contains(ll, "smartdns") ||
+				strings.Contains(ll, "resolver") ||
+				strings.Contains(ll, "dnstt") ||
+				strings.Contains(ll, "routes") ||
+				strings.Contains(ll, "nft add element") ||
+				strings.Contains(ll, "cache hit:") {
+				continue
+			}
+
+			lines = append(lines, l)
+		}
+
+	default: // full
+		// полный хвост trace.log без фильтрации
+		lines = tailFile(traceLogPath, defaultTraceTailMax)
+	}
+
+	writeJSON(w, http.StatusOK, map[string]any{
+		"lines": lines,
+	})
+}