first commit litecoin wallet

litecoin/ltcBlockchainAPI.js

@@ -0,0 +1,507 @@
+(function (EXPORTS) {
+  "use strict";
+  const ltcBlockchainAPI = EXPORTS;
+
+  const DEFAULT = {
+    fee: 0.001, 
+  };
+
+  //Get balance for the given Address
+  ltcBlockchainAPI.getBalance = function (addr) {
+    return new Promise((resolve, reject) => {
+      fetch(
+        `https://go.getblock.io/cfa5c9eb49c944a7aa4856e4e9a516a2/api/address/${addr}`
+      )
+        .then((response) => {
+          if (!response.ok)
+            throw new Error(`HTTP error! Status: ${response.status}`);
+          return response.json();
+        })
+        .then((data) => {
+          console.log("Balance data:", data);
+          if (data && typeof data.balance !== "undefined")
+            resolve(parseFloat(data.balance));
+          else reject("Balance not found in response");
+        })
+        .catch((error) => reject(error));
+    });
+  };
+
+  // Helper function to get UTXOs for an address
+  const getUTXOs = async (addr) => {
+    const url = `https://go.getblock.io/cfa5c9eb49c944a7aa4856e4e9a516a2/api/address/${addr}?details=txs`;
+    const res = await fetch(url);
+    const data = await res.json();
+    if (!data.txs) throw new Error("No transactions found for address");
+
+    const utxos = [];
+    data.txs.forEach((tx) => {
+      tx.vout.forEach((vout) => {
+        const addresses =
+          vout.addresses ||
+          (vout.scriptPubKey ? vout.scriptPubKey.addresses : []);
+        if (
+          !vout.spent &&
+          vout.scriptPubKey &&
+          vout.scriptPubKey.hex &&
+          addresses &&
+          addresses.some((a) => a.toLowerCase() === addr.toLowerCase())
+        ) {
+          console.log("Found UTXO:", {
+            txid: tx.txid,
+            vout: vout.n,
+            value: parseFloat(vout.value),
+          });
+
+          utxos.push({
+            txid: tx.txid,
+            vout: vout.n,
+            value: parseFloat(vout.value),
+            scriptPubKey: vout.scriptPubKey.hex,
+          });
+        }
+      });
+    });
+    return utxos;
+  };
+
+  function toLTC(val) {
+    if (typeof val === "string" && val.includes("LTC")) {
+      return parseFloat(val.replace("LTC", "").trim());
+    }
+
+    const num = parseFloat(val || "0");
+
+    return isNaN(num) ? 0 : num;
+  }
+
+  /**
+   * Get transaction history for a Litecoin address
+   * @param {string} address - The Litecoin address to check
+   * @param {Object} options - Optional parameters
+   * @param {number} options.limit - Number of transactions to retrieve (default: 10)
+   * @param {number} options.offset - Offset for pagination
+   * @returns {Promise} Promise object that resolves with transaction list
+   */
+  ltcBlockchainAPI.getLtcTransactions = function (address, options = {}) {
+    return new Promise((resolve, reject) => {
+      console.log(`Fetching transaction history for: ${address}`);
+      fetch(
+        `https://go.getblock.io/cfa5c9eb49c944a7aa4856e4e9a516a2/api/address/${address}?details=txs`
+      )
+        .then((response) => {
+          if (!response.ok) {
+            if (response.status === 429) {
+              throw new Error(
+                "API rate limit exceeded. Please try again later."
+              );
+            }
+            throw new Error(`HTTP error! Status: ${response.status}`);
+          }
+          return response.json();
+        })
+        .then(async (data) => {
+          console.log("Raw API response data:", data);
+          const txs = data.txs || [];
+          const txids = txs.map((tx) => tx.txid) || [];
+          console.log(
+            `Found ${txids.length} transactions for address ${address}`
+          );
+          const limit = options.limit || 10;
+          const offset = options.offset || 0;
+
+          const maxTxToProcess = Math.min(10, limit);
+          const txsToProcess = txs.slice(offset, offset + maxTxToProcess);
+
+          if (txsToProcess.length === 0) {
+            console.log("No transactions to process based on offset/limit");
+            resolve({
+              transactions: [],
+              total: txs.length,
+              offset: offset,
+              limit: limit,
+            });
+            return;
+          }
+
+          console.log(`Processing ${txsToProcess.length} transactions`);
+
+          const transactions = txsToProcess;
+          console.log("Transactions to process:", transactions);
+
+          try {
+            const processedTransactions = transactions.map((tx) => {
+              const inputs = tx.vin || [];
+              const outputs = tx.vout || [];
+
+              // Check if address is sender (in vin)
+              const isSender = inputs.some((i) =>
+                i.addresses?.includes(address)
+              );
+
+              // Check if address is receiver (in vout)
+              const isReceiver = outputs.some(
+                (o) =>
+                  (o.addresses && o.addresses.includes(address)) ||
+                  (o.scriptPubKey?.addresses &&
+                    o.scriptPubKey.addresses.includes(address))
+              );
+
+              let type = "unknown";
+              let value = 0;
+              let fromAddresses = [];
+              let toAddresses = [];
+
+              // Extract sender addresses (from)
+              inputs.forEach((input) => {
+                if (input.addresses && input.addresses.length > 0) {
+                  input.addresses.forEach((addr) => {
+                    if (!fromAddresses.includes(addr)) {
+                      fromAddresses.push(addr);
+                    }
+                  });
+                }
+              });
+
+              // Extract recipient addresses (to)
+              outputs.forEach((output) => {
+                const outAddresses =
+                  output.addresses ||
+                  (output.scriptPubKey ? output.scriptPubKey.addresses : []);
+
+                if (outAddresses && outAddresses.length > 0) {
+                  outAddresses.forEach((addr) => {
+                    if (!toAddresses.includes(addr)) {
+                      toAddresses.push(addr);
+                    }
+                  });
+                }
+              });
+
+              if (isSender && isReceiver) {
+                type = "self";
+
+                const totalInput = inputs
+                  .filter((i) => i.addresses?.includes(address))
+                  .reduce((sum, i) => sum + toLTC(i.value), 0);
+
+                const totalOutput = outputs
+                  .filter(
+                    (o) =>
+                      (o.addresses && o.addresses.includes(address)) ||
+                      (o.scriptPubKey?.addresses &&
+                        o.scriptPubKey.addresses.includes(address))
+                  )
+                  .reduce((sum, o) => sum + toLTC(o.value), 0);
+
+                value = totalOutput - totalInput;
+              } else if (isSender) {
+                type = "sent";
+
+                const totalInput = inputs
+                  .filter((i) => i.addresses?.includes(address))
+                  .reduce((sum, i) => sum + toLTC(i.value), 0);
+
+                const changeBack = outputs
+                  .filter(
+                    (o) =>
+                      (o.addresses && o.addresses.includes(address)) ||
+                      (o.scriptPubKey?.addresses &&
+                        o.scriptPubKey.addresses.includes(address))
+                  )
+                  .reduce((sum, o) => sum + toLTC(o.value), 0);
+
+                value = -(totalInput - changeBack);
+              } else if (isReceiver) {
+                type = "received";
+
+                value = outputs
+                  .filter(
+                    (o) =>
+                      (o.addresses && o.addresses.includes(address)) ||
+                      (o.scriptPubKey?.addresses &&
+                        o.scriptPubKey.addresses.includes(address))
+                  )
+                  .reduce((sum, o) => sum + toLTC(o.value), 0);
+              }
+
+              console.log(`Transaction ${tx.txid} time data:`, {
+                blockTime: tx.blocktime,
+                blockheight: tx.blockheight,
+                time: tx.time,
+              });
+
+              const timestamp =
+                tx.time ||
+                tx.blockTime ||
+                (tx.confirmations
+                  ? Math.floor(Date.now() / 1000) - tx.confirmations * 600
+                  : Math.floor(Date.now() / 1000));
+
+              return {
+                txid: tx.txid,
+                type,
+                value: value.toFixed(8),
+                time: timestamp,
+                blockHeight: tx.blockheight,
+                formattedTime: new Date(timestamp * 1000).toLocaleString(),
+                confirmations: tx.confirmations || 0,
+                rawTx: tx.hex,
+                fromAddresses: fromAddresses,
+                toAddresses: toAddresses,
+              };
+            });
+
+            if (processedTransactions.length > 0) {
+              console.log(
+                "Sample transaction processed:",
+                processedTransactions[0]
+              );
+
+              console.log("Raw transaction data:", transactions[0]);
+            } else {
+              console.log("No transactions were processed successfully");
+              console.log("Original txids found:", txids);
+            }
+            resolve({
+              transactions: processedTransactions,
+              total: txids.length,
+              offset: offset,
+              limit: limit,
+            });
+          } catch (error) {
+            console.error("Error processing transactions:", error);
+            reject(error);
+          }
+        })
+        .catch((error) => {
+          console.error("API Error:", error);
+          reject(error);
+        });
+    });
+  };
+
+  /**
+   * Send Litecoin transaction using direct RPC calls to GetBlock.io
+   * This method implements the full RPC workflow: createrawtransaction -> signrawtransaction -> sendrawtransaction
+   * @param {string} senderAddr - Sender's Litecoin address
+   * @param {string} receiverAddr - Receiver's Litecoin address
+   * @param {number} sendAmt - Amount to send in LTC
+   * @param {string} privKey - Private key of the sender
+   * @returns {Promise} Promise that resolves with the transaction ID
+   */
+  ltcBlockchainAPI.sendLitecoinRPC = function (
+    senderAddr,
+    receiverAddr,
+    sendAmt,
+    privKey
+  ) {
+    return new Promise((resolve, reject) => {
+      if (!ltcCrypto.validateLtcID(senderAddr, true))
+        return reject(`Invalid sender address: ${senderAddr}`);
+      if (!ltcCrypto.validateLtcID(receiverAddr))
+        return reject(`Invalid receiver address: ${receiverAddr}`);
+      if (typeof sendAmt !== "number" || sendAmt <= 0)
+        return reject(`Invalid send amount: ${sendAmt}`);
+      if (privKey.length < 1 || !ltcCrypto.verifyPrivKey(privKey, senderAddr))
+        return reject("Invalid Private key!");
+
+      const fee = DEFAULT.fee;
+      const apiToken = "31ea37c3a0c44b368e879007af7a64c8";
+      const rpcEndpoint = `https://go.getblock.io/${apiToken}/`;
+
+      async function rpc(method, params = []) {
+        const res = await fetch(rpcEndpoint, {
+          method: "POST",
+          headers: { "Content-Type": "application/json" },
+          body: JSON.stringify({ jsonrpc: "2.0", id: "1", method, params }),
+        });
+        const text = await res.text();
+        try {
+          const data = JSON.parse(text);
+          if (data.error) throw new Error(JSON.stringify(data.error));
+          return data.result;
+        } catch (err) {
+          console.error("Raw RPC response:\n", text);
+          throw new Error("Failed to parse JSON-RPC response");
+        }
+      }
+
+      // Get UTXOs for the address
+      getUTXOs(senderAddr)
+        .then(async (utxos) => {
+          if (utxos.length === 0) return reject("No valid UTXOs found");
+          console.log("Found UTXOs:", utxos);
+
+          const utxoTotal = utxos.reduce((sum, utxo) => sum + utxo.value, 0);
+          console.log("Total UTXO value:", utxoTotal);
+
+          if (utxoTotal < sendAmt + fee)
+            return reject(
+              `Insufficient funds: ${utxoTotal} < ${sendAmt + fee}`
+            );
+
+          const inputs = utxos.map((utxo) => ({
+            txid: utxo.txid,
+            vout: utxo.vout,
+          }));
+
+          console.log("inputs:", inputs);
+
+          // Calculate change amount
+          const change = utxoTotal - sendAmt - fee;
+
+          const outputs = {
+            [senderAddr]: Number(change.toFixed(8)),
+            [receiverAddr]: Number(sendAmt.toFixed(8)),
+          };
+          console.log("outputs:", outputs);
+
+          try {
+            // Create raw transaction
+            console.log("Creating raw transaction...");
+            const rawTx = await rpc("createrawtransaction", [inputs, outputs]);
+            console.log("Raw transaction hex:", rawTx);
+            // Sign raw transaction
+            console.log("Signing transaction...");
+            const signedTx = await rpc("signrawtransaction", [
+              rawTx,
+              [
+                {
+                  txid: utxos[0].txid,
+                  vout: utxos[0].vout,
+                  scriptPubKey: utxos[0].scriptPubKey,
+                  amount: utxos[0].value.toFixed(8),
+                },
+              ],
+              [privKey],
+            ]);
+
+            if (!signedTx.complete) {
+              return reject(
+                `Failed to sign transaction: ${JSON.stringify(signedTx.errors)}`
+              );
+            }
+            console.log("Signed transaction hex:", signedTx.hex);
+
+            // Send raw transaction
+            console.log("Broadcasting transaction...");
+            const txid = await rpc("sendrawtransaction", [signedTx.hex]);
+
+            resolve(txid);
+          } catch (error) {
+            console.error("RPC error:", error);
+            reject(error);
+          }
+        })
+        .catch((error) => reject(error));
+    });
+  };
+  /**
+   * Get transaction details by transaction ID
+   * @param {string} txid - The transaction ID to look up
+   * @returns {Promise} Promise object that resolves with transaction details
+   */
+  ltcBlockchainAPI.getTransactionDetails = function (txid) {
+    return new Promise((resolve, reject) => {
+      if (!txid || typeof txid !== "string" || txid.length !== 64) {
+        reject(new Error("Invalid transaction ID format"));
+        return;
+      }
+
+      console.log(`Fetching transaction details for txid: ${txid}`);
+
+      fetch(
+        `https://go.getblock.io/cfa5c9eb49c944a7aa4856e4e9a516a2/api/tx/${txid}`
+      )
+        .then((response) => {
+          if (!response.ok) {
+            if (response.status === 404) {
+              throw new Error("Transaction not found");
+            } else if (response.status === 429) {
+              throw new Error(
+                "API rate limit exceeded. Please try again later."
+              );
+            }
+            throw new Error(`HTTP error! Status: ${response.status}`);
+          }
+          return response.json();
+        })
+        .then((data) => {
+          console.log("Transaction details data:", data);
+
+          if (!data || !data.txid) {
+            throw new Error("Invalid transaction data returned");
+          }
+
+          const processedData = {
+            txid: data.txid,
+            blockHeight: data.blockheight,
+            blockHash: data.blockhash,
+            blockTime: data.blocktime
+              ? new Date(data.blocktime * 1000).toLocaleString()
+              : "Pending",
+            confirmations: data.confirmations || 0,
+            fees: data.fees,
+            size: data.hex.length / 2, // Size in bytes
+            inputsCount: data.vin ? data.vin.length : 0,
+            outputsCount: data.vout ? data.vout.length : 0,
+            totalInput: 0,
+            totalOutput: 0,
+            inputs: [],
+            outputs: [],
+          };
+
+          // Process inputs
+          if (data.vin && Array.isArray(data.vin)) {
+            data.vin.forEach((input) => {
+              const inputValue = parseFloat(input.value || 0);
+              processedData.totalInput += inputValue;
+
+              const inputData = {
+                txid: input.txid,
+                vout: input.vout,
+                addresses: input.addresses || [],
+                value: inputValue,
+              };
+
+              processedData.inputs.push(inputData);
+            });
+          }
+
+          // Process outputs
+          if (data.vout && Array.isArray(data.vout)) {
+            data.vout.forEach((output) => {
+              const outputValue = parseFloat(output.value || 0);
+              processedData.totalOutput += outputValue;
+
+              const addresses =
+                output.scriptPubKey && output.scriptPubKey.addresses
+                  ? output.scriptPubKey.addresses
+                  : [];
+
+              const outputData = {
+                n: output.n,
+                addresses: addresses,
+                value: outputValue,
+                spent: output.spent || false,
+                scriptPubKey: output.scriptPubKey
+                  ? output.scriptPubKey.hex
+                  : "",
+              };
+
+              processedData.outputs.push(outputData);
+            });
+          }
+
+          resolve(processedData);
+        })
+        .catch((error) => {
+          console.error("Error fetching transaction details:", error);
+          reject(error);
+        });
+    });
+  };
+})(
+  "object" === typeof module ? module.exports : (window.ltcBlockchainAPI = {})
+);

litecoin/ltcCrypto.js

@@ -0,0 +1,292 @@
+(function (EXPORTS) {
+  "use strict";
+  const ltcCrypto = EXPORTS;
+
+  const generateNewID = (ltcCrypto.generateNewID = function () {
+    var key = new Bitcoin.ECKey(false);
+    key.setCompressed(true);
+    return {
+      floID: key.getBitcoinAddress(),
+      pubKey: key.getPubKeyHex(),
+      privKey: key.getBitcoinWalletImportFormat(),
+    };
+  });
+
+  Object.defineProperties(ltcCrypto, {
+    newID: {
+      get: () => generateNewID(),
+    },
+    hashID: {
+      value: (str) => {
+        let bytes = ripemd160(Crypto.SHA256(str, { asBytes: true }), {
+          asBytes: true,
+        });
+        bytes.unshift(bitjs.pub);
+        var hash = Crypto.SHA256(
+          Crypto.SHA256(bytes, {
+            asBytes: true,
+          }),
+          {
+            asBytes: true,
+          }
+        );
+        var checksum = hash.slice(0, 4);
+        return bitjs.Base58.encode(bytes.concat(checksum));
+      },
+    },
+    tmpID: {
+      get: () => {
+        let bytes = Crypto.util.randomBytes(20);
+        bytes.unshift(bitjs.pub);
+        var hash = Crypto.SHA256(
+          Crypto.SHA256(bytes, {
+            asBytes: true,
+          }),
+          {
+            asBytes: true,
+          }
+        );
+        var checksum = hash.slice(0, 4);
+        return bitjs.Base58.encode(bytes.concat(checksum));
+      },
+    },
+  });
+
+  //Verify the private-key for the given public-key or ltc-ID
+  ltcCrypto.verifyPrivKey = function (privateKeyWIF, ltcAddress) {
+    if (!privateKeyWIF || !ltcAddress) return false;
+    try {
+      var derivedAddress =
+        ltcCrypto.generateMultiChain(privateKeyWIF).LTC.address;
+      return derivedAddress === ltcAddress;
+    } catch (e) {
+      console.error("verifyPrivKey error:", e);
+      return false;
+    }
+  };
+
+  //Check if the given ltc-id is valid or not
+  ltcCrypto.validateLtcID = function (ltcID) {
+    if (!ltcID) return false;
+
+    // Check for SegWit addresses (ltc1...)
+    if (ltcID.toLowerCase().startsWith("ltc1")) {
+      try {
+        // Basic SegWit validation
+        if (ltcID.length < 42 || ltcID.length > 62) return false;
+
+        // Check if it contains only valid bech32 characters
+        const bech32Regex = /^ltc1[qpzry9x8gf2tvdw0s3jn54khce6mua7l]+$/i;
+        return bech32Regex.test(ltcID);
+      } catch (e) {
+        return false;
+      }
+    }
+
+    // Legacy address validation (L, M prefixes)
+    try {
+      // Decode Base58Check
+      let bytes = bitjs.Base58.decode(ltcID);
+      if (!bytes || bytes.length < 25) return false;
+      let version = bytes[0];
+
+      return version === 0x30 || version === 0x32 || version === 0x05; // Litecoin legacy (L), P2SH (M), or segwit compatible
+    } catch (e) {
+      return false;
+    }
+  };
+
+  //Generates multi-chain addresses (LTC, BTC, FLO, DOGE) from the given WIF or new WIF
+  ltcCrypto.generateMultiChain = function (inputWif) {
+    try {
+      const origBitjsPub = bitjs.pub;
+      const origBitjsPriv = bitjs.priv;
+      const origBitjsCompressed = bitjs.compressed;
+      const origCoinJsCompressed = coinjs.compressed;
+
+      bitjs.compressed = true;
+      coinjs.compressed = true;
+
+      const versions = {
+        LTC: { pub: 0x30, priv: 0xb0 },
+        BTC: { pub: 0x00, priv: 0x80 },
+        FLO: { pub: 0x23, priv: 0xa3 },
+        DOGE: { pub: 0x1e, priv: 0x9e },
+      };
+
+      let privKeyHex;
+      let compressed = true;
+
+      if (typeof inputWif === "string" && inputWif.length > 0) {
+        const decode = Bitcoin.Base58.decode(inputWif);
+        const keyWithVersion = decode.slice(0, decode.length - 4);
+        let key = keyWithVersion.slice(1);
+
+        if (key.length >= 33 && key[key.length - 1] === 0x01) {
+          key = key.slice(0, key.length - 1);
+          compressed = true;
+        } else {
+          compressed = false;
+        }
+
+        privKeyHex = Crypto.util.bytesToHex(key);
+      } else {
+        const newKey = generateNewID();
+        const decode = Bitcoin.Base58.decode(newKey.privKey);
+        const keyWithVersion = decode.slice(0, decode.length - 4);
+        let key = keyWithVersion.slice(1);
+
+        if (key.length >= 33 && key[key.length - 1] === 0x01) {
+          key = key.slice(0, key.length - 1);
+        }
+
+        privKeyHex = Crypto.util.bytesToHex(key);
+      }
+
+      bitjs.compressed = compressed;
+      coinjs.compressed = compressed;
+
+      // Generate public key
+      const pubKey = bitjs.newPubkey(privKeyHex);
+
+      const result = {
+        LTC: { address: "", privateKey: "" },
+        BTC: { address: "", privateKey: "" },
+        FLO: { address: "", privateKey: "" },
+        DOGE: { address: "", privateKey: "" },
+      };
+
+      // For LTC
+      bitjs.pub = versions.LTC.pub;
+      bitjs.priv = versions.LTC.priv;
+      result.LTC.address = bitjs.pubkey2address(pubKey);
+      result.LTC.privateKey = bitjs.privkey2wif(privKeyHex);
+
+      // For BTC
+      bitjs.pub = versions.BTC.pub;
+      bitjs.priv = versions.BTC.priv;
+      result.BTC.address = coinjs.bech32Address(pubKey).address;
+      result.BTC.privateKey = bitjs.privkey2wif(privKeyHex);
+
+      // For FLO
+      bitjs.pub = versions.FLO.pub;
+      bitjs.priv = versions.FLO.priv;
+      result.FLO.address = bitjs.pubkey2address(pubKey);
+      result.FLO.privateKey = bitjs.privkey2wif(privKeyHex);
+
+      // For DOGE
+      bitjs.pub = versions.DOGE.pub;
+      bitjs.priv = versions.DOGE.priv;
+      result.DOGE.address = bitjs.pubkey2address(pubKey);
+      result.DOGE.privateKey = bitjs.privkey2wif(privKeyHex);
+
+      bitjs.pub = origBitjsPub;
+      bitjs.priv = origBitjsPriv;
+      bitjs.compressed = origBitjsCompressed;
+      coinjs.compressed = origCoinJsCompressed;
+
+      return result;
+    } catch (error) {
+      console.error("Error in generateMultiChain:", error);
+      throw error;
+    }
+  };
+
+  /**
+   * Translates an address from one blockchain to equivalent addresses on other chains
+   * Works by extracting the public key hash from the address and recreating addresses with different version bytes
+   */
+  ltcCrypto.translateAddress = function (address) {
+    try {
+      let sourceChain = null;
+
+      if (address.startsWith("bc1")) {
+        sourceChain = "BTC";
+      } else if (address.startsWith("D")) {
+        sourceChain = "DOGE";
+      } else if (address.startsWith("F")) {
+        sourceChain = "FLO";
+      } else if (address.startsWith("L") || address.startsWith("M")) {
+        sourceChain = "LTC";
+      } else {
+        throw new Error("Unsupported address format");
+      }
+
+      let decoded, hash160;
+
+      if (sourceChain === "BTC") {
+        decoded = coinjs.bech32_decode(address);
+        if (!decoded) throw new Error("Invalid bech32 address");
+
+        // For segwit addresses, convert from 5-bit to 8-bit
+        const data = coinjs.bech32_convert(decoded.data.slice(1), 5, 8, false);
+        hash160 = Crypto.util.bytesToHex(data);
+      } else {
+        // Handle LTC, DOGE and FLO addresses (Base58)
+        const decodedBytes = Bitcoin.Base58.decode(address);
+        if (!decodedBytes || decodedBytes.length < 25)
+          throw new Error("Invalid address");
+
+        // Remove version byte (first byte) and checksum (last 4 bytes)
+        const bytes = decodedBytes.slice(1, decodedBytes.length - 4);
+        hash160 = Crypto.util.bytesToHex(bytes);
+      }
+
+      if (!hash160) throw new Error("Could not extract hash160 from address");
+
+      const versions = {
+        LTC: 0x30,
+        DOGE: 0x1e,
+        FLO: 0x23,
+        BTC: 0x00,
+      };
+
+      const result = {};
+
+      // Generate address for LTC
+      const ltcBytes = Crypto.util.hexToBytes(hash160);
+      ltcBytes.unshift(versions.LTC);
+      const ltcChecksum = Crypto.SHA256(
+        Crypto.SHA256(ltcBytes, { asBytes: true }),
+        { asBytes: true }
+      ).slice(0, 4);
+      result.LTC = Bitcoin.Base58.encode(ltcBytes.concat(ltcChecksum));
+
+      // Generate address for DOGE
+      const dogeBytes = Crypto.util.hexToBytes(hash160);
+      dogeBytes.unshift(versions.DOGE);
+      const dogeChecksum = Crypto.SHA256(
+        Crypto.SHA256(dogeBytes, { asBytes: true }),
+        { asBytes: true }
+      ).slice(0, 4);
+      result.DOGE = Bitcoin.Base58.encode(dogeBytes.concat(dogeChecksum));
+
+      // Generate address for FLO
+      const floBytes = Crypto.util.hexToBytes(hash160);
+      floBytes.unshift(versions.FLO);
+      const floChecksum = Crypto.SHA256(
+        Crypto.SHA256(floBytes, { asBytes: true }),
+        { asBytes: true }
+      ).slice(0, 4);
+      result.FLO = Bitcoin.Base58.encode(floBytes.concat(floChecksum));
+
+      // Generate address for BTC
+      try {
+        const words = coinjs.bech32_convert(
+          Crypto.util.hexToBytes(hash160),
+          8,
+          5,
+          true
+        );
+        result.BTC = coinjs.bech32_encode("bc", [0].concat(words));
+      } catch (e) {
+        console.log("Could not generate segwit address:", e);
+      }
+
+      return result;
+    } catch (err) {
+      console.error("Address translation error:", err);
+      throw new Error("Address translation failed: " + err.message);
+    }
+  };
+})("object" === typeof module ? module.exports : (window.ltcCrypto = {}));

litecoin/ltcSearchDB.js

@@ -0,0 +1,124 @@
+class SearchedAddressDB {
+  constructor() {
+    this.dbName = "LtcWalletDB";
+    this.version = 1;
+    this.storeName = "searchedAddresses";
+    this.db = null;
+  }
+
+  async init() {
+    return new Promise((resolve, reject) => {
+      const request = indexedDB.open(this.dbName, this.version);
+
+      request.onerror = () => reject(request.error);
+      request.onsuccess = () => {
+        this.db = request.result;
+        resolve();
+      };
+
+      request.onupgradeneeded = (event) => {
+        const db = event.target.result;
+        if (!db.objectStoreNames.contains(this.storeName)) {
+          const store = db.createObjectStore(this.storeName, {
+            keyPath: "address",
+          });
+          store.createIndex("timestamp", "timestamp", { unique: false });
+        }
+      };
+    });
+  }
+
+  async saveSearchedAddress(
+    address,
+    balance,
+    timestamp = Date.now(),
+    sourceInfo = null
+  ) {
+    if (!this.db) await this.init();
+
+    return new Promise((resolve, reject) => {
+      const transaction = this.db.transaction([this.storeName], "readwrite");
+      const store = transaction.objectStore(this.storeName);
+
+      // First, check if this address already exists
+      const getRequest = store.get(address);
+
+      getRequest.onsuccess = () => {
+        const existingRecord = getRequest.result;
+        let finalSourceInfo = sourceInfo;
+
+        // If record exists and has sourceInfo, preserve it unless we're providing new sourceInfo
+        if (existingRecord && existingRecord.sourceInfo && !sourceInfo) {
+          finalSourceInfo = existingRecord.sourceInfo;
+        }
+        // If existing record has sourceInfo and new one doesn't, keep the existing one
+        else if (
+          existingRecord &&
+          existingRecord.sourceInfo &&
+          sourceInfo === null
+        ) {
+          finalSourceInfo = existingRecord.sourceInfo;
+        }
+
+        const data = {
+          address, // This will be the LTC address
+          balance,
+          timestamp,
+          formattedBalance: `${balance} LTC`,
+          sourceInfo: finalSourceInfo, // Contains original blockchain info if translated from another chain
+        };
+
+        const putRequest = store.put(data);
+        putRequest.onsuccess = () => resolve();
+        putRequest.onerror = () => reject(putRequest.error);
+      };
+
+      getRequest.onerror = () => reject(getRequest.error);
+    });
+  }
+
+  async getSearchedAddresses() {
+    if (!this.db) await this.init();
+
+    return new Promise((resolve, reject) => {
+      const transaction = this.db.transaction([this.storeName], "readonly");
+      const store = transaction.objectStore(this.storeName);
+      const index = store.index("timestamp");
+
+      const request = index.getAll();
+      request.onsuccess = () => {
+        const results = request.result.sort(
+          (a, b) => b.timestamp - a.timestamp
+        );
+        resolve(results);
+      };
+      request.onerror = () => reject(request.error);
+    });
+  }
+
+  async deleteSearchedAddress(address) {
+    if (!this.db) await this.init();
+
+    return new Promise((resolve, reject) => {
+      const transaction = this.db.transaction([this.storeName], "readwrite");
+      const store = transaction.objectStore(this.storeName);
+
+      const request = store.delete(address);
+      request.onsuccess = () => resolve();
+      request.onerror = () => reject(request.error);
+    });
+  }
+
+  async clearAllSearchedAddresses() {
+    if (!this.db) await this.init();
+
+    return new Promise((resolve, reject) => {
+      const transaction = this.db.transaction([this.storeName], "readwrite");
+      const store = transaction.objectStore(this.storeName);
+
+      const request = store.clear();
+      request.onsuccess = () => resolve();
+      request.onerror = () => reject(request.error);
+    });
+  }
+}