add web init with uiconfig file path, add cli flag

.gitignore

@@ -1,6 +1,7 @@
 /cc-backend
 /.env
 /config.json
+/uiConfig.json
 
 /var/job-archive
 /var/machine-state

cmd/cc-backend/cli.go

@@ -9,7 +9,7 @@ import "flag"
 var (
 	flagReinitDB, flagInit, flagServer, flagSyncLDAP, flagGops, flagMigrateDB, flagRevertDB,
 	flagForceDB, flagDev, flagVersion, flagLogDateTime, flagApplyTags bool
-	flagNewUser, flagDelUser, flagGenJWT, flagConfigFile, flagImportJob, flagLogLevel string
+	flagNewUser, flagDelUser, flagGenJWT, flagConfigFile, flagUiConfigFile, flagImportJob, flagLogLevel string
 )
 
 func cliInit() {
@@ -26,6 +26,7 @@ func cliInit() {
 	flag.BoolVar(&flagForceDB, "force-db", false, "Force database version, clear dirty flag and exit")
 	flag.BoolVar(&flagLogDateTime, "logdate", false, "Set this flag to add date and time to log messages")
 	flag.StringVar(&flagConfigFile, "config", "./config.json", "Specify alternative path to `config.json`")
+	flag.StringVar(&flagUiConfigFile, "ui-config", "./uiConfig.json", "Specify alternative path to `uiConfig.json`")
 	flag.StringVar(&flagNewUser, "add-user", "", "Add a new user. Argument format: <username>:[admin,support,manager,api,user]:<password>")
 	flag.StringVar(&flagDelUser, "del-user", "", "Remove a existing user. Argument format: <username>")
 	flag.StringVar(&flagGenJWT, "jwt", "", "Generate and print a JWT for the user specified by its `username`")

cmd/cc-backend/server.go

@@ -52,6 +52,8 @@ func onFailureResponse(rw http.ResponseWriter, r *http.Request, err error) {
 }
 
 func serverInit() {
+	// Init Web Package (Primarily: uiDefaults)
+	web.Init(flagUiConfigFile)
 	// Setup the http.Handler/Router used by the server
 	graph.Init()
 	resolver := graph.GetResolverInstance()

configs/uiConfig.json

@@ -0,0 +1,45 @@
+{
+  "jobList": {
+    "usePaging": false,
+    "showFootprint":false
+  },
+  "jobView": {
+    "showPolarPlot": true,
+    "showFootprint": true,
+    "showRoofline": true,
+    "showStatTable": true
+  },
+  "metricConfig": {
+    "jobListMetrics": ["mem_bw", "flops_dp"],
+    "jobViewPlotMetrics": ["mem_bw", "flops_dp"],
+    "jobViewTableMetrics": ["mem_bw", "flops_dp"],
+    "clusters": [
+      {
+        "name": "test",
+        "subClusters": [
+          {
+            "name": "one",
+            "jobListMetrics": ["mem_used", "flops_sp"]
+          }
+        ]
+      }
+    ]
+  },
+  "nodeList": {
+    "usePaging": true
+  },
+  "plotConfiguration": {
+    "plotsPerRow": 3,
+    "colorBackground": true,
+    "lineWidth": 3,
+    "colorScheme": [
+	"#00bfff",
+	"#0000ff",
+	"#ff00ff",
+	"#ff0000",
+	"#ff8000",
+	"#ffff00",
+	"#80ff00"
+    ]
+  }
+}

web/web.go

@@ -11,7 +11,9 @@ import (
 	"encoding/json"
 	"html/template"
 	"io/fs"
+	"log"
 	"net/http"
+	"os"
 	"strings"
 
 	"github.com/ClusterCockpit/cc-backend/internal/config"
@@ -115,9 +117,18 @@ var UIDefaultsMap map[string]any
 // 	"status_view_selectedTopProjectCategory": "totalJobs",
 // }
 
-func Init(rawConfig json.RawMessage) error {
+func Init(configFilePath string) error {
-	var err error
+	var rawConfig json.RawMessage = nil
+	raw, rerr := os.ReadFile(configFilePath)
+	if rerr != nil {
+		if !os.IsNotExist(rerr) {
+			log.Fatalf("UI-CONFIG ERROR: %v", rerr)
+		}
+	} else {
+		rawConfig = json.RawMessage(raw)
+	}
 
+	var err error
 	if rawConfig != nil {
 		config.Validate(configSchema, rawConfig)
 		if err = json.Unmarshal(rawConfig, &UIDefaults); err != nil {