Merge pull request 'Added pull request from GitHub https://github.com/Lisoveliy/totpfit/pull/1, fix of settings app' (#11) from from-mirror into main

Reviewed-on: #11

app.json

@@ -6,11 +6,11 @@
         "appType": "app",
         "version": {
             "code": 1,
-            "name": "1.3.0"
+            "name": "1.3.1"
         },
         "icon": "icon.png",
         "vender": "zepp",
-        "description": "Another 2FAuthenticator based on TOTP for Zepp Amazfit GTS 4"
+        "description": "Another 2FAuthenticator based on TOTP for Zepp OS"
     },
     "permissions": ["data:os.device.info", "device:os.local_storage"],
     "runtime": {

lib/protobuf-decoder/protobufDecoder.js

@@ -107,7 +107,7 @@ export function decodeProto(buffer) {
         }
     } catch (err) {
         reader.resetToCheckpoint();
-        console.log(`ERR: ${err}`);
+        console.log(err);
     }
 
     return {

lib/totp-quickjs/OTPGenerator.js

@@ -13,25 +13,21 @@ export function getHOTP(counter, secret, digits = 6, hashType = "SHA-1") {
     //Stage 1: Prepare data
     const rawDataCounter = new DataView(new ArrayBuffer(8));
     rawDataCounter.setUint32(4, counter);
-
     const bCounter = new Uint8Array(rawDataCounter.buffer);
     const bSecret = new Uint8Array(
         decode(secret)
             .match(/.{1,2}/g)
             .map((chunk) => parseInt(chunk, 16)),
     ); //confirmed
-
     //Stage 2: Hash data
     const jssha = new jsSHA(hashType, "UINT8ARRAY");
     jssha.setHMACKey(bSecret, "UINT8ARRAY");
     jssha.update(bCounter);
     const hmacResult = jssha.getHMAC("UINT8ARRAY"); //confirmed
-
     //Stage 3: Dynamic truncate
     const offsetB = hmacResult[19] & 0xf;
     const P = hmacResult.slice(offsetB, offsetB + 4);
     P[0] = P[0] & 0x7f;
-
     //Stage 4: Format string
     let res = (
         new DataView(P.buffer).getInt32(0) % Math.pow(10, digits)

lib/totp-quickjs/index.js

@@ -48,7 +48,12 @@ export class TOTP {
      */
     getOTP(time = Date.now()) {
         const unixTime = (time / 1000 + this.timeOffset) / this.fetchTime;
-        const otp = getHOTP(Math.floor(unixTime), this.secret, this.digits, this.hashType);
+        const otp = getHOTP(
+            Math.floor(unixTime),
+            this.secret,
+            this.digits,
+            this.hashType,
+        );
         const expireTime =
             time +
             (this.fetchTime -

package.json

@@ -1,12 +1,13 @@
 {
     "name": "totpfit",
-    "version": "1.3.0",
+    "version": "1.3.1",
     "description": "Another 2FAuthenticator based on TOTP for Zepp Amazfit GTS 4",
     "main": "app.js",
     "author": "Lisoveliy",
     "license": "MIT",
     "devDependencies": {
-        "@zeppos/device-types": "^3.0.0"
+        "@zeppos/device-types": "^3.0.0",
+        "prettier": "3.6.2"
     },
     "dependencies": {
         "@zeppos/zml": "^0.0.27",

page/index.js

@@ -2,14 +2,18 @@ import { RenderAddButton } from "./render/totpRenderer";
 import { initLoop } from "./render/index/renderer";
 import { BasePage } from "@zeppos/zml/base-page";
 import { LocalStorage } from "@zos/storage";
+import { setPageBrightTime } from "@zos/display";
 
 const app = getApp();
 
+const brightTimeMs = 300000;
+
 let waitForFetch = true;
 
 Page(
     BasePage({
         onInit() {
+            setPageBrightTime({ brightTime: brightTimeMs });
             this.getTOTPData()
                 .then((x) => {
                     app._options.globalData.TOTPS = JSON.parse(x) ?? [];
@@ -22,7 +26,7 @@ Page(
                     this.initPage();
                 })
                 .catch((x) => {
-                    console.log(`ERR: Init failed - ${x}`);
+                    console.log(`Init failed: ${x}`);
                     try {
                         let localStorage = new LocalStorage();
                         app._options.globalData.TOTPS = JSON.parse(

page/render/index/renderer.js

@@ -22,11 +22,12 @@ function renderContainers(buffer) {
 }
 
 const renderData = [];
+
 function renderTOTPs(buffer) {
     for (let i = 0; i < buffer.length; i++) {
         let otpData = TOTP.copy(buffer[i]).getOTP();
         renderData[i] = {
-            OTP: RenderOTPValue(i, otpData.otp),
+            OTP: RenderOTPValue(i, formatOTP(otpData.otp)),
             expireBar: RenderExpireBar(
                 i,
                 otpData.createdTime,
@@ -49,9 +50,15 @@ function renderTOTPs(buffer) {
             if (otpData.expireTime < Date.now()) {
                 otpData = TOTP.copy(buffer[i]).getOTP();
                 renderData[i].OTP.setProperty(prop.MORE, {
-                    text: otpData.otp,
+                    text: formatOTP(otpData.otp),
                 });
             }
         }, 50);
     }
 }
+
+function formatOTP(otp) {
+    if (otp.length === 6) return `${otp.substring(0, 3)} ${otp.substring(3)}`;
+
+    return otp;
+}

setting/consts.js

@@ -9,26 +9,32 @@ export const colors = {
 };
 
 export const content = {
-    addTotpsHint: "For add a 2FA TOTP record you must have otpauth:// link or otpauth-migration:// link from Google Authenticator Migration QR-Code",
+    addTotpsHint:
+        "For add a 2FA TOTP record you must have otpauth:// link or otpauth-migration:// link from Google Authenticator Migration QR-Code",
+    totpRecordsHint: "TOTP records:",
     createButton: {
         placeHolder: "otpauth(-migration)://",
-        label: "Add new TOTP record"
+        label: "Add new TOTP record",
     },
     instructionLink: {
         label: "Instruction | Report issue (GitHub)",
-        source: "https://github.com/Lisoveliy/totpfit/blob/main/docs/guides/how-to-add-totps/README.md"
+        source: "https://github.com/Lisoveliy/totpfit/blob/main/docs/guides/how-to-add-totps/README.md",
     },
     changeButton: {
         label: "Change TOTP link",
-        placeHolder: "otpauth(-migration)://"
+        placeHolder: "otpauth(-migration)://",
     },
     deleteButton: {
-        label: "Delete"
+        label: "Delete",
     },
     totpLabelText: {
-        eval(issuer, client) {return `${issuer}: ${client}`;}
+        eval(issuer, client) {
+            return `${issuer}: ${client}`;
+        },
     },
     totpDescText: {
-        eval(hashType, digits, fetchTime, timeOffset) { return `${hashType} | ${digits} digits | ${fetchTime} seconds | ${timeOffset} sec offset`; }
-    }
+        eval(hashType, digits, fetchTime, timeOffset) {
+            return `${hashType} | ${digits} digits | ${fetchTime} seconds | ${timeOffset} sec offset`;
+        },
+    },
 };

setting/index.js

@@ -1,7 +1,69 @@
 import { getTOTPByLink } from "./utils/queryParser.js";
+import { createTOTPCard } from "./ui/card.js";
 import { colors, content } from "./consts.js";
 
 let _props = null;
+let editingIndex = -1;
+let tempIssuer = "";
+let tempClient = "";
+let errorMessage = "";
+
+function updateStorage(storage) {
+    _props.settingsStorage.setItem("TOTPs", JSON.stringify(storage));
+}
+
+function GetTOTPList(storage) {
+    return storage.map((element, index) => {
+        return createTOTPCard({
+            element,
+            index,
+            storage,
+            isEditing: editingIndex === index,
+            tempIssuer,
+            tempClient,
+            onIssuerChange: (val) => {
+                tempIssuer = val;
+            },
+            onClientChange: (val) => {
+                tempClient = val;
+            },
+            onRename: () => {
+                editingIndex = index;
+                tempIssuer = element.issuer;
+                tempClient = element.client;
+                updateStorage(storage);
+            },
+            onSave: () => {
+                storage[index].issuer = tempIssuer;
+                storage[index].client = tempClient;
+                editingIndex = -1;
+                updateStorage(storage);
+            },
+            onDelete: () => {
+                storage.splice(index, 1);
+                updateStorage(storage);
+            },
+            onMoveUp: () => {
+                if (index > 0) {
+                    [storage[index], storage[index - 1]] = [
+                        storage[index - 1],
+                        storage[index],
+                    ];
+                    updateStorage(storage);
+                }
+            },
+            onMoveDown: () => {
+                if (index < storage.length - 1) {
+                    [storage[index], storage[index + 1]] = [
+                        storage[index + 1],
+                        storage[index],
+                    ];
+                    updateStorage(storage);
+                }
+            },
+        });
+    });
+}
 
 AppSettingsPage({
     build(props) {
@@ -27,20 +89,30 @@ AppSettingsPage({
                       content.addTotpsHint,
                   )
                 : null;
+
         const createButton = TextInput({
             placeholder: content.createButton.placeHolder,
             label: content.createButton.label,
             onChange: (changes) => {
+                try {
+                    errorMessage = "";
                     let link = getTOTPByLink(changes);
                     if (link == null) {
-                    console.log("ERR: link is invalid");
-                    return;
+                        throw new Error(
+                            "Unsupported link type. Please use an otpauth:// or otpauth-migration:// link",
+                        );
                     }
 
-                if (Array.isArray(link)) storage.push(...link);
-                else storage.push(link);
-
+                    if (Array.isArray(link)) {
+                        storage.push(...link);
+                    } else {
+                        storage.push(link);
+                    }
                     updateStorage(storage);
+                } catch (e) {
+                    errorMessage = e.message;
+                    updateStorage(storage);
+                }
             },
             labelStyle: {
                 backgroundColor: colors.notify,
@@ -51,51 +123,36 @@ AppSettingsPage({
                 fontSize: "20px",
                 color: colors.text,
                 borderRadius: "5px",
-                position: storage.length < 1 ? "absolute" : null, //TODO: Сделать что-то с этим кошмаром
-                bottom: storage.length < 1 ? "0px" : null,
-                left: storage.length < 1 ? "0px" : null,
-                right: storage.length < 1 ? "0px" : null,
+                height: "45px",
             },
         });
 
-        var body = Section(
+        const errorText = errorMessage
+            ? Text(
+                  {
+                      style: {
+                          color: colors.alert,
+                          textAlign: "center",
+                      },
+                  },
+                  errorMessage,
+              )
+            : null; //TODO: Check for work
+
+        const bottomContainer = View(
             {
                 style: {
                     backgroundColor: colors.bg,
-                    minHeight: "100vh",
                 },
             },
             [
-                View(
-                    {
-                        style: {
-                            textAlign: "center",
-                        },
-                    },
-                    storage.length < 1
-                        ? addTOTPsHint
-                        : Text(
-                            {
-                                align: "center",
-                                paragraph: true,
-                                style: {
-                                    marginBottom: "10px",
-                                    color: colors.bigText,
-                                    fontSize: 23,
-                                    fontWeight: "500",
-                                    verticalAlign: "middle",
-                                },
-                            },
-                            "TOTP records:",
-                        ),
-                ),
-                ...totpEntrys,
-                createButton,
                 View(
                     {
                         style: {
                             display: "flex",
                             justifyContent: "center",
+                            marginTop: "20px",
+                            marginBottom: "20px",
                         },
                     },
                     Link(
@@ -105,121 +162,65 @@ AppSettingsPage({
                         content.instructionLink.label,
                     ),
                 ),
-            ],
+                errorText,
+                createButton,
+            ].filter(Boolean),
         );
-        return body;
-    },
-});
 
-/**
- * Get DOM elements of TOTP records
- * @param {*} storage Array of TOTP objects
- * @returns Array of DOM elements
- */
-function GetTOTPList(storage) {
-    let totpEntrys = [];
-    let counter = 0;
-    storage.forEach((element) => {
-        const elementId = counter;
-        const totpLabelText = Text(
+        const pageContainer = View(
             {
-                align: "center",
                 style: {
-                    color: colors.text,
-                    fontSize: "18px",
-                    fontWeight: "500",
-                },
-                paragraph: true,
-            },
-            content.totpLabelText.eval(element.issuer, element.client),
-        );
-        const changeButton = TextInput({
-            placeholder: content.changeButton.placeHolder,
-            label: content.changeButton.label,
-            onChange: (changes) => {
-                try {
-                    let link = getTOTPByLink(changes);
-                    if (Array.isArray(link)) return;
-
-                    storage[elementId] = link;
-                    updateStorage(storage);
-                } catch (err) {
-                    console.log(`ERR: ${err}`);
-                }
-            },
-            labelStyle: {
-                backgroundColor: colors.notify,
-                textAlign: "center",
+                    backgroundColor: colors.bg,
+                    height: "100vh",
                     display: "flex",
-                alignItems: "center",
-                justifyContent: "center",
-                margin: "10px",
-                flexGrow: 1,
-                fontSize: "20px",
-                color: colors.text,
-                borderRadius: "5px",
-            },
-        });
-        const totpDescText = Text(
-            {
-                style: {
-                    color: colors.text,
-                    fontSize: "14px",
-                },
-                align: "center",
-            },
-            content.totpDescText.eval(element.hashType, element.digits, element.fetchTime, element.timeOffset),
-        );
-        const deleteButton = Button({
-            onClick: () => {
-                storage = storage.filter(
-                    (x) => storage.indexOf(x) != elementId,
-                );
-                updateStorage(storage);
-            },
-            style: {
-                backgroundColor: colors.alert,
-                fontSize: "18px",
-                color: colors.text,
-                height: "fit-content",
-                margin: "10px",
-            },
-            label: content.deleteButton.label,
-        });
-        const view = View(
-            {
-                style: {
-                    textAlign: "center",
-                    backgroundColor: colors.secondaryBg,
-                    borderRadius: "5px",
-                    margin: "10px",
+                    flexDirection: "column",
+                    justifyContent: "space-between",
                 },
             },
             [
-                totpLabelText,
-                totpDescText,
                 View(
                     {
                         style: {
-                            display: "grid",
-                            gridTemplateColumns: "1fr 100px",
+                            textAlign: "center",
                         },
                     },
-                    [changeButton, deleteButton],
+                    [
+                        storage.length < 1
+                            ? addTOTPsHint
+                            : Text(
+                                  {
+                                      align: "center",
+                                      paragraph: true,
+                                      style: {
+                                          marginTop: "10px",
+                                          marginBottom: "10px",
+                                          color: colors.bigText,
+                                          fontSize: 23,
+                                          fontWeight: "500",
+                                          verticalAlign: "middle",
+                                      },
+                                  },
+                                  content.totpRecordsHint,
                               ),
                     ],
+                ),
+
+                View(
+                    {
+                        style: {
+                            height: "100%",
+                            overflowX: "hidden",
+                            overflowY: "auto",
+                            backgroundColor: colors.bg,
+                        },
+                    },
+                    [...totpEntrys],
+                ),
+
+                bottomContainer,
+            ],
         );
-        totpEntrys.push({ text: totpDescText, view: view });
-        counter++;
-    });
 
-    return totpEntrys.map((x) => x.view);
-}
-
-/**
- * Update 
- * @param {*} storage Array of TOTP objects
- */
-function updateStorage(storage) {
-    _props.settingsStorage.setItem("TOTPs", JSON.stringify(storage));
-}
+        return pageContainer;
+    },
+});

setting/ui/card.js

@@ -0,0 +1,186 @@
+import { colors, content } from "../consts";
+
+export function createTOTPCard({
+    element,
+    index,
+    storage,
+    isEditing,
+    tempIssuer,
+    tempClient,
+    onRename,
+    onSave,
+    onDelete,
+    onMoveUp,
+    onMoveDown,
+    onIssuerChange,
+    onClientChange,
+}) {
+    const infoView = View(
+        {
+            style: {
+                display: "flex",
+                flexDirection: "column",
+                alignItems: "flex-start",
+            },
+        },
+        isEditing
+            ? [
+                  TextInput({
+                      label: "Rename Issuer",
+                      value: tempIssuer,
+                      onChange: onIssuerChange,
+                      labelStyle: {
+                          backgroundColor: colors.notify,
+                          display: "flex",
+                          alignItems: "center",
+                          justifyContent: "center",
+                          margin: "10px",
+                          fontSize: "20px",
+                          color: colors.text,
+                          borderRadius: "5px",
+                          height: "40px",
+                          width: "200px"
+                      },
+                      subStyle: {
+                          display: "none",
+                      },
+                  }),
+                  TextInput({
+                      label: "Rename client",
+                      value: tempClient,
+                      onChange: onClientChange,
+                      labelStyle: {
+                          backgroundColor: colors.notify,
+                          display: "flex",
+                          alignItems: "center",
+                          justifyContent: "center",
+                          margin: "10px",
+                          fontSize: "20px",
+                          color: colors.text,
+                          borderRadius: "5px",
+                          height: "40px",
+                          width: "200px"
+                      },
+                      subStyle: {
+                          display: "none",
+                      },
+                  }),
+              ]
+            : [
+                  Text(
+                      {
+                          style: {
+                              color: colors.text,
+                              marginBottom: "2px",
+                              fontWeight: "600",
+                          },
+                      },
+                      `Issuer: ${element.issuer}`,
+                  ),
+                  Text(
+                      { style: { color: colors.text, fontWeight: "600" } },
+                      `Client: ${element.client}`,
+                  ),
+              ],
+    );
+
+    const buttonsView = View(
+        { style: { display: "flex", flexDirection: "row" } },
+        isEditing
+            ? [
+                  Button({
+                      label: "Save",
+                      style: {
+                          margin: "5px",
+                          backgroundColor: "#28a745",
+                          color: colors.text,
+                      },
+                      onClick: onSave,
+                  }),
+              ]
+            : [
+                  Button({
+                      label: "Rename",
+                      style: {
+                          margin: "5px",
+                          backgroundColor: colors.notify,
+                          color: colors.text,
+                      },
+                      onClick: onRename,
+                  }),
+                  Button({
+                      label: "Delete",
+                      style: {
+                          margin: "5px",
+                          backgroundColor: colors.alert,
+                          color: colors.text,
+                      },
+                      onClick: onDelete,
+                  }),
+              ],
+    );
+
+    const reorderView = View(
+        { style: { display: "flex", flexDirection: "column" } },
+        [
+            Button({
+                label: "⬆",
+                disabled: index === 0,
+                style: {
+                    width: "50px",
+                    margin: "2px",
+                    color: colors.text,
+                    backgroundColor: colors.notify,
+                },
+                onClick: onMoveUp,
+            }),
+            Button({
+                label: "⬇",
+                disabled: index === storage.length - 1,
+                style: {
+                    width: "50px",
+                    margin: "2px",
+                    color: colors.text,
+                    backgroundColor: colors.notify,
+                },
+                onClick: onMoveDown,
+            }),
+        ],
+    );
+
+    const mainContent = View({ style: { flexGrow: 1, padding: "5px" } }, [
+        infoView,
+        Text(
+            {
+                style: {
+                    color: colors.text,
+                    fontSize: "14px",
+                    marginTop: "5px",
+                },
+            },
+            content.totpDescText.eval(
+                element.hashType,
+                element.digits,
+                element.fetchTime,
+                element.timeOffset,
+            ),
+        ),
+        buttonsView,
+    ]);
+
+    return View(
+        {
+            style: {
+                display: "flex",
+                flexDirection: "row",
+                justifyContent: "space-between",
+                alignItems: "center",
+                backgroundColor: colors.secondaryBg,
+                borderRadius: "5px",
+                margin: "10px",
+                padding: "5px",
+            },
+        },
+        [mainContent, reorderView],
+    );
+}

setting/utils/queryParser.js

@@ -2,13 +2,105 @@ import { decodeProto, TYPES } from "../../lib/protobuf-decoder/protobufDecoder";
 import { TOTP } from "../../lib/totp-quickjs";
 import { base64decode, encode } from "../../lib/totp-quickjs/base32decoder";
 
-const otpauthScheme = "otpauth:/";
-const googleMigrationScheme = "otpauth-migration:/";
+const otpauthScheme = "otpauth://";
+const googleMigrationScheme = "otpauth-migration://";
+
+function _parseSingleMigrationEntry(part) {
+    const totpProto = decodeProto(part.value);
+    const otpData = {};
+
+    const protoPartHandlers = {
+        1: (p) => {
+            otpData.secret = encode(p.value);
+        },
+        2: (p) => {
+            otpData.name = bytesToString(p.value);
+        },
+        3: (p) => {
+            otpData.issuer = bytesToString(p.value);
+        },
+        4: (p) => {
+            otpData.algorithm = p.value;
+        },
+        5: (p) => {
+            otpData.digits = p.value;
+        },
+        6: (p) => {
+            otpData.type = p.value;
+        },
+    };
+
+    totpProto.parts.forEach((p) => {
+        const handler = protoPartHandlers[p.index];
+        if (handler) {
+            handler(p);
+        }
+    });
+
+    if (otpData.type !== "2") {
+        return null;
+    }
+
+    const digitsMap = { 1: 6, 2: 8 };
+    const algoMap = { 1: "SHA-1", 2: "SHA-256", 3: "SHA-512" };
+
+    const finalDigits = digitsMap[otpData.digits] || 6;
+    const finalAlgo = algoMap[otpData.algorithm] || "SHA-1";
+    const finalIssuer = otpData.issuer || otpData.name;
+    const finalName = otpData.name;
+
+    if (!otpData.secret || !finalName) {
+        throw new Error("Skipping record with missing secret or name.");
+    }
+
+    return new TOTP(
+        otpData.secret,
+        finalIssuer,
+        finalName,
+        finalDigits,
+        30,
+        0,
+        finalAlgo,
+    );
+}
+
+function getByGoogleMigrationScheme(link) {
+    try {
+        const data = link.split("data=")[1];
+        if (!data) return null;
+
+        const decodedData = decodeURIComponent(data);
+        const buffer = base64decode(decodedData);
+        const proto = decodeProto(buffer);
+
+        const totps = [];
+        const otpParameters = proto.parts.filter(
+            (p) => p.index === 1 && p.type === TYPES.LENDELIM,
+        );
+
+        otpParameters.forEach((part) => {
+            const totp = _parseSingleMigrationEntry(part);
+            if (totp) {
+                totps.push(totp);
+            }
+        });
+
+        return totps.length > 0 ? totps : null;
+    } catch (err) {
+        console.log("Failed to parse Google Migration scheme:", err);
+        throw new Error(
+            "Invalid otpauth-migration:// link. Failed to parse migration data.",
+        );
+    }
+}
 
 export function getTOTPByLink(link) {
-    if (link.includes(otpauthScheme)) return getByOtpauthScheme(link);
-    if (link.includes(googleMigrationScheme))
+    if (link.startsWith(googleMigrationScheme)) {
         return getByGoogleMigrationScheme(link);
+    }
+    if (link.startsWith(otpauthScheme)) {
+        return getByOtpauthScheme(link);
+    }
 
     return null;
 }
@@ -22,78 +114,50 @@ function getHashType(algorithm) {
 
 function getByOtpauthScheme(link) {
     try {
-        let args = link.split("/", otpauthScheme.length);
-        let type = args[2]; //Returns 'hotp' or 'totp'
-        let issuer = args[3].split(":")[0]?.split("?")[0]; //Returns issuer
-        let client =
-            args[3].split(":")[1]?.split("?")[0] ??
-            args[3].split(":")[0]?.split("?")[0]; //Returns client
-        let secret = args[3].split("secret=")[1]?.split("&")[0]; //Returns secret
-        let period = args[3].split("period=")[1]?.split("&")[0]; //Returns period
-        let digits = args[3].split("digit=")[1]?.split("&")[0]; //Returns digits
-        let algorithm = args[3].split("algorithm=")[1]?.split("&")[0]; //Returns algorithm
-        let offset = args[3].split("offset=")[1]?.split("&")[0] ?? 0; //Returns offset
+        let args = link.split("?");
+        let path = args[0];
+        let params = args[1];
+
+        let pathParts = path.split("/");
+        let type = pathParts[2]; //hotp or totp
+        let label = decodeURIComponent(pathParts[3]);
+
+        let issuerFromLabel = label.includes(":") ? label.split(":")[0] : null;
+        let client = label.includes(":") ? label.split(":")[1].trim() : label;
+
+        let secret = params.match(/secret=([^&]*)/)?.[1];
+        let issuerFromParams = params.match(/issuer=([^&]*)/)?.[1];
+
+        let issuer = issuerFromParams
+            ? decodeURIComponent(issuerFromParams)
+            : issuerFromLabel;
+        if (!issuer) issuer = client;
+
+        let period = params.match(/period=([^&]*)/)?.[1];
+        let digits = params.match(/digits=([^&]*)/)?.[1];
+        let algorithm = params.match(/algorithm=([^&]*)/)?.[1];
+        let offset = params.match(/offset=([^&]*)/)?.[1] ?? 0;
 
         if (type.toLowerCase() != "totp")
             throw new Error("Type is not valid, requires 'TOTP'");
 
-        if (secret === undefined) throw new Error("Secret not defined");
-
-        if (issuer == client) {
-            issuer = args[3].split("issuer=")[1]?.split("&")[0];
-        }
-
-        issuer = decodeURIComponent(issuer);
-        client = decodeURIComponent(client);
+        if (!secret) throw new Error("Secret not defined");
 
         return new TOTP(
             secret,
             issuer,
             client,
-            Number(digits),
-            Number(period),
+            Number(digits) || 6,
+            Number(period) || 30,
             Number(offset),
             getHashType(algorithm),
         );
     } catch (err) {
-        console.log(`ERR: ${err}`);
-        return null;
-    }
-}
-
-function getByGoogleMigrationScheme(link) {
-    let data = link.split("data=")[1]; //Returns base64 encoded data
-    data = decodeURIComponent(data);
-    let decode = base64decode(data);
-    let proto = decodeProto(decode);
-
-    let protoTotps = [];
-
-    proto.parts.forEach((part) => {
-        if (part.type == TYPES.LENDELIM) {
-            protoTotps.push(decodeProto(part.value));
-        }
-    });
-
-    let totps = [];
-    protoTotps.forEach((x) => {
-        let type = x.parts.filter((x) => x.index == 6)[0]; //find type of OTP
-        if (type.value !== "2") {
-            console.log("ERR: it's a not TOTP record");
-            return;
-        }
-        let secret = x.parts.filter((x) => x.index == 1)[0].value;
-        secret = encode(secret);
-
-        let name = bytesToString(x.parts.filter((x) => x.index == 2)[0].value);
-        let issuer = bytesToString(
-            x.parts.filter((x) => x.index == 3)[0].value,
+        console.log("Failed to parse otpauth scheme:", err);
+        throw new Error(
+            `Invalid otpauth:// link. Please check the link and try again. ERR: ${err}`,
         );
-
-        totps.push(new TOTP(secret, issuer, name, 6, 30, 0, "SHA-1"));
-    });
-
-    return totps;
+    }
 }
 
 function bytesToString(bytes) {