Based on work from @nygma2004
Initial screen:

After pressing UploadLogin:
After correct credentials are entered group with file input appears:
Note: I use global npm module "crypto-js" not to store passwords as plain text, so add it in your settings.js or load in function block Setup
functionGlobalContext: {
cryptojs:require('crypto-js')
},
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'mdi-eye' : 'mdi-eye-off'\"\n :type=\"showPsw ? 'text' : 'password'\"\n density=\"compact\" \n placeholder=\"Enter your password\" \n prepend-inner-icon=\"mdi-lock-outline\" \n variant=\"outlined\"\n @click:append-inner=\"showPsw = !showPsw\" \n v-model=\"password\">\n </v-text-field> -->\n\n <v-text-field\n :append-icon=\"showPsw ? 'mdi-eye' : 'mdi-eye-off'\"\n :type=\"showPsw ? 'text' : 'password'\"\n class=\"input-group--focused\"\n name=\"input-10-2\"\n prepend-inner-icon=\"mdi-lock-outline\"\n v-model=\"password\"\n @click:append=\"showPsw = !showPsw\"\n ></v-text-field>\n\n <v-card class=\"mb-14\" :color=\"color\" variant=\"tonal\">\n <v-card-text class=\"font-weight-bold text-caption\">\n {{ message }}\n </v-card-text>\n </v-card>\n\n <v-btn class=\"mb-8\" color=\"blue\" size=\"large\" variant=\"tonal\" block @click=\"LoginButton\">\n Log In\n </v-btn>\n\n <v-card-text class=\"text-center\">\n </v-card-text>\n </v-card>\n <!-- </v-card> -->\n </v-dialog>\n</template>\n\n\n\n\n<script>\nexport default {\n data() {\n return {\n dialog: false,\n showPsw: false,\n color: \"surface-variant\",\n message: \"\",\n username: \"\",\n password: \"\"\n }\n },\n watch: {\n msg: function(){\n // only show the dialog if msg.payload is an object and the socket id in the message\n // matches our socket id (which means the popup was initiated from this session) or\n // there is no _client property present which indicates it should be shown on all sessions.\n if (this.msg.topic===\"close\") {\n this.dialog = false;\n } else {\n if (!this.msg._client || this.msg._client.socketId === this.$socket.id) { \n console.log(\"OK we are in\");\n if (typeof this.msg.payload !== object) msg.payload = {};\n this.message = this.msg.payload.message ?? \"Access to Upload functionality is restricted. 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'mdi-eye-off' : 'mdi-eye'\"\n :type=\"visible ? 'text' : 'password'\"\n density=\"compact\"\n placeholder=\"Enter your password\"\n prepend-inner-icon=\"mdi-lock-outline\"\n variant=\"outlined\"\n @click:append-inner=\"visible = !visible\"\n ></v-text-field>\n\n <v-card class=\"mb-12\" color=\"surface-variant\" variant=\"tonal\">\n <v-card-text class=\"text-medium-emphasis text-caption\">\n Warning: After 3 consecutive failed login attempts, you account will\n be temporarily locked for three hours. If you must login now, you can\n also click \"Forgot login password?\" below to reset the login password.\n </v-card-text>\n </v-card>\n\n <v-btn class=\"mb-8\" color=\"blue\" size=\"large\" variant=\"tonal\" block>\n Log In\n </v-btn>\n\n <v-card-text class=\"text-center\">\n <a\n class=\"text-blue text-decoration-none\"\n href=\"#\"\n rel=\"noopener noreferrer\"\n target=\"_blank\"\n >\n Sign up now <v-icon icon=\"mdi-chevron-right\"></v-icon>\n </a>\n </v-card-text>\n </v-card>\n </div>\n</template>\n\n\n\n\n<script>\nexport default {\n data() {\n return {\n dialog: false,\n color: \"surface-variant\",\n message: \"\",\n username: \"\",\n password: \"\"\n }\n },\n watch: {\n msg: function(){\n // only show the dialog if msg.payload is an object and the socket id in the message\n // matches our socket id (which means the popup was initiated from this session) or\n // there is no _client property present which indicates it should be shown on all sessions.\n if (this.msg.topic===\"close\") {\n this.dialog = false;\n } else {\n if (!this.msg._client || this.msg._client.socketId === this.$socket.id) { \n console.log(\"OK we are in\");\n if (typeof this.msg.payload !== object) msg.payload = {};\n this.message = this.msg.payload.message ?? \"Access to this page is restricted. 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1 : 0) + (typeof useraccess.settings === \"object\" ? 1 : 0) !== 2) {\n node.status({fill:\"red\",shape:\"ring\",text:\"Invalid useraccess config\"});\n return [null, null];\n}\n\n// Check if an authentication request is received (logon attempt)\nif (msg.topic===\"authenticate\") {\n let authenticated = false;\n //node.warn(\"Check authetication\");\n // Check if the username/password is valid\n for (let i=0; i<useraccess.users.length; i++) {\n //node.warn(\"Useraccess loop: \" + i);\n if ((msg.payload.username === useraccess.users[i].username) && (passHash === useraccess.users[i].password)) {\n msg._client.user = useraccess.users[i];\n authenticated = true;\n\n //Find user client data\n const connUserIndex = connectionList.findIndex(conn => conn.client.socketId === msg._client.socketId)\n if (connUserIndex !== -1) {\n // Connection exists, update user and logonTime\n connectionList[connUserIndex].client.user = msg.payload.username;\n connectionList[connUserIndex].logonTime = now.getTime();\n flow.set(\"connectionList\", connectionList)\n }\n break;\n } \n }\n if (authenticated) {\n msg.topic = \"close\";\n msg.payload = \"\";\n node.status({ fill: \"green\", shape: \"ring\", text: \"User accepted\" });\n return [msg, msg];\n } \n else {\n msg.topic = \"login\";\n msg.payload = { color: \"red\", message: \"Invalid username or password.\" };\n node.status({ fill: \"red\", shape: \"ring\", text: \"Invalid user\" });\n return [msg, null];\n }\n\n}\n","outputs":2,"timeout":0,"noerr":0,"initialize":"","finalize":"","libs":[],"x":410,"y":340,"wires":[["ef150be92d36d820"],["0997738cf03d9068"]]},{"id":"003f2613ed2057d1","type":"inject","z":"d3d8a490d0e9960a","name":"Show","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":390,"y":400,"wires":[["0997738cf03d9068"]]},{"id":"5252bf4fba7e7f87","type":"function","z":"d3d8a490d0e9960a","name":"SearchSocketID","func":"const connectionList = flow.get(\"connectionList\") || []\nconst client = msg?._client\n\nif (connectionList.length > 0){\n const connUserIndex = connectionList.findIndex(conn => conn?.client?.socketId === client.socketId)\n //check if user is logged in with this socket ID.\n if (connectionList[connUserIndex].client.user) {\n return [msg, null]\n }\n else return [null, msg]\n}\n","outputs":2,"timeout":0,"noerr":0,"initialize":"","finalize":"","libs":[],"x":620,"y":580,"wires":[["0a178d25241b6bf7"],["e9764b1176c38447","0cacd9dba27e365c"]]},{"id":"e9764b1176c38447","type":"function","z":"d3d8a490d0e9960a","name":"PreventPopUp","func":"msg.topic = \"close\"\nreturn msg;","outputs":1,"timeout":0,"noerr":0,"initialize":"","finalize":"","libs":[],"x":820,"y":580,"wires":[["f49f276f352bfb16"]]},{"id":"f49f276f352bfb16","type":"link out","z":"d3d8a490d0e9960a","name":"link out 10","mode":"link","links":["b77cfda3c7b3a881"],"x":945,"y":580,"wires":[]},{"id":"b77cfda3c7b3a881","type":"link in","z":"d3d8a490d0e9960a","name":"link in 5","links":["f49f276f352bfb16"],"x":35,"y":300,"wires":[["ef150be92d36d820"]]},{"id":"0a178d25241b6bf7","type":"link out","z":"d3d8a490d0e9960a","name":"link out 11","mode":"link","links":["d432840f7e6b5855"],"x":755,"y":540,"wires":[]},{"id":"d432840f7e6b5855","type":"link in","z":"d3d8a490d0e9960a","name":"link in 6","links":["0a178d25241b6bf7"],"x":475,"y":400,"wires":[["0997738cf03d9068"]]},{"id":"0cacd9dba27e365c","type":"link out","z":"d3d8a490d0e9960a","name":"link out 12","mode":"link","links":["f055c2134fd17b54"],"x":755,"y":620,"wires":[]},{"id":"f055c2134fd17b54","type":"link in","z":"d3d8a490d0e9960a","name":"link in 7","links":["0cacd9dba27e365c"],"x":475,"y":500,"wires":[["8b8e181044168f49"]]},{"id":"04c08c114913c192","type":"ui-group","name":"File Input","page":"7bc2300bd082d6d4","width":"6","height":"1","order":1,"showTitle":true,"className":"","visible":"true","disabled":"false"},{"id":"ad43ab200ca5494d","type":"ui-group","name":"Hikvision file control","page":"7bc2300bd082d6d4","width":"3","height":"1","order":2,"showTitle":true,"className":"","visible":"true","disabled":"false"},{"id":"65cf368b48fdb5f6","type":"ui-base","name":"My Dashboard","path":"/dashboard","includeClientData":true,"acceptsClientConfig":["ui-notification","ui-control","ui-file-input"],"showPathInSidebar":false,"showPageTitle":true,"navigationStyle":"default","titleBarStyle":"default"},{"id":"7bc2300bd082d6d4","type":"ui-page","name":"Hikvision","ui":"65cf368b48fdb5f6","path":"/Hikvision","icon":"camera","layout":"grid","theme":"d1f899a55e3aa9ab","order":5,"className":"","visible":"true","disabled":"false"},{"id":"d1f899a55e3aa9ab","type":"ui-theme","name":"Default Theme","colors":{"surface":"#ffffff","primary":"#0094CE","bgPage":"#eeeeee","groupBg":"#ffffff","groupOutline":"#cccccc"},"sizes":{"pagePadding":"12px","groupGap":"12px","groupBorderRadius":"4px","widgetGap":"12px"}}]