feat(storage): rename snapraid_content to snapraid_conf; clarify conf vs content file; add auto-detect and conf viewer

internal/web/handlers_storage.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io"
 	"net/http"
+	"os"
 	"strconv"
 	"strings"
 	"time"
@@ -31,9 +32,36 @@ func (s *Server) handleStorageGetConfig(w http.ResponseWriter, r *http.Request)
 		writeError(w, http.StatusInternalServerError, err.Error())
 		return
 	}
+	if cfg.SnapraidConf == "" {
+		for _, path := range []string{"/etc/snapraid.conf", "/usr/local/etc/snapraid.conf"} {
+			if info, err := os.Stat(path); err == nil && !info.IsDir() {
+				cfg.SnapraidConf = path
+				break
+			}
+		}
+	}
 	writeJSON(w, http.StatusOK, cfg)
 }
 
+func (s *Server) handleStorageGetConfFile(w http.ResponseWriter, r *http.Request) {
+	cfg, err := s.DB.GetStorageConfig()
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if cfg.SnapraidConf == "" {
+		writeError(w, http.StatusBadRequest, "snapraid conf path not configured")
+		return
+	}
+	data, err := os.ReadFile(cfg.SnapraidConf)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, fmt.Sprintf("read %s: %v", cfg.SnapraidConf, err))
+		return
+	}
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
+	w.Write(data)
+}
+
 func (s *Server) handleStorageUpdateConfig(w http.ResponseWriter, r *http.Request) {
 	var cfg db.StorageConfig
 	defer r.Body.Close()
@@ -67,9 +95,9 @@ func (s *Server) handleStorageUpdateConfig(w http.ResponseWriter, r *http.Reques
 			return
 		}
 	}
-	if cfg.SnapraidContent != "" {
-		if err := validateAbsPath(cfg.SnapraidContent); err != nil {
-			writeError(w, http.StatusBadRequest, fmt.Sprintf("snapraid_content: %v", err))
+	if cfg.SnapraidConf != "" {
+		if err := validateAbsPath(cfg.SnapraidConf); err != nil {
+			writeError(w, http.StatusBadRequest, fmt.Sprintf("snapraid_conf: %v", err))
 			return
 		}
 	}

internal/web/router.go

@@ -92,6 +92,7 @@ func NewRouter(s *Server) chi.Router {
 			storageRouter.Get("/disk-usage", s.handleStorageDiskUsage)
 			storageRouter.Get("/config", s.handleStorageGetConfig)
 				storageRouter.Put("/config", s.handleStorageUpdateConfig)
+				storageRouter.Get("/conf-file", s.handleStorageGetConfFile)
 				storageRouter.Route("/jobs", func(j chi.Router) {
 					j.Get("/", s.handleStorageListJobs)
 					j.Post("/", s.handleStorageStartJob)