# Developer Guide Welcome to Viction Wallet Developer Guide. This documentation contains guides for developers to get started developing on Viction Wallet Extension.‌ ## The easiest way to connect to Viction Wallet Check if the provider is window\.viction, if not, please replace it with the exclusive Viction Wallet provider window\.viction. For example, see below: ``` function getProvider() { const provider = window.viction; if (!provider) { return window.open('https://chrome.google.com/webstore/detail/tomo-wallet/nopnfnlbinpfoihclomelncopjiioain?hl=vi'); } return provider; } ``` **ChainID:** | Hex | Decimal | Network | Hex | Decimal | Network | | ---- | ------- | ------- | ---- | ------- | ------------ | | 0x58 | 88 | Viction | 0x64 | 100 | Gnosis Chain | Use eth\_chainId or net\_version to returns the current network/chain ID ### To detect Viction Wallet Extension ``` if(window.Viction ){ console.log('Viction Extension is installed!'); } ``` **Notice**\ Viction Testnet is under development and not available now ## To connect Viction Wallet Extension *** #### Access a user's accounts We recommend providing a button to allow users to connect Viction Wallet to your dapp. Selecting this button should call eth\_requestAccounts to access the user's accounts. ``` //Alias for connection window.viction.request({method: 'eth_requestAccounts'});​ ``` #### Handle accounts[​](https://docs.metamask.io/wallet/how-to/connect/access-accounts/#handle-accounts) Use the eth\_accounts RPC method to handle user accounts. Listen to the accountsChanged provider event to be notified when the user changes accounts. ``` // Connect & get accounts window.viction.request({method: 'eth_accounts'}); ``` #### To check if Dapp connected ``` window.viction.isConnected(); ``` ### To disconnect Viction Wallet Extension To disconnect Viction Extension, please use: ``` window.viction.disconnect() ``` ## To experience functions Once your account is connected, let's start experiencing more functions.‌ ### Account #### How to get Current Account return Promise\ * If wallet can not be found, return \[] instead of throw Error ``` window.viction.request({ method: 'eth_accounts' }).then(accounts => { if (accounts[0]) { // Do something with accounts } else { // Wallet not found } }) ``` ### Sign Transaction {% hint style="info" %} **Important** eth\_signTypedData\_v1, and eth\_signTypedData\_v3 are deprecated. We highly recommend user to use eth\_signTypedData\_v4 or personal\_sign. {% endhint %} #### Personal\_sign personal\_sign provides a simple means to request signatures that are human-readable and don't require efficient processing on-chain. It's commonly used for signature challenges authenticated on a web server. Viction Wallet implements both personal\_sign and eth\_sign. You might need to check what method your supported signers use for a given implementation. ``` method: 'personal_sign', params: [msg, from], ``` #### eth\_signTypedData\_v4 eth\_signTypedData\_v4 offers highly legible signatures that can be processed efficiently on-chain. Adheres to the [EIP-712 ](https://eips.ethereum.org/EIPS/eip-712)standard, enabling users to sign sign typed structured data that can be confirmed on-chain. ``` const msgParams = JSON.stringify({ domain: { chainId: 0x58, name: 'Ether Mail', verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC', version: '1', }, message: { contents: 'Hello, Bob!', attachedMoneyInEth: 4.2, from: { name: 'Cow', wallets: [ '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826', '0xDeaDbeefdEAdbeefdEadbEEFdeadbeEFdEaDbeeF', ], }, to: [ { name: 'Bob', wallets: [ '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB', '0xB0BdaBea57B0BDABeA57b0bdABEA57b0BDabEa57', '0xB0B0b0b0b0b0B000000000000000000000000000', ], }, ], }, primaryType: 'Mail', types: { EIP712Domain: [ { name: 'name', type: 'string' }, { name: 'version', type: 'string' }, { name: 'chainId', type: 'uint256' }, { name: 'verifyingContract', type: 'address' }, ], Group: [ { name: 'name', type: 'string' }, { name: 'members', type: 'Person[]' }, ], Mail: [ { name: 'from', type: 'Person' }, { name: 'to', type: 'Person[]' }, { name: 'contents', type: 'string' }, ], Person: [ { name: 'name', type: 'string' }, { name: 'wallets', type: 'address[]' }, ], }, ; ``` {% hint style="info" %} **Note:** Gas limit​: is an optional parameter, since Viction Wallet automatically calculates a reasonable gas price. chainid: The chain ID is derived from the user's current selected network at window\.Viction.net\_version. {% endhint %} #### personal\_ecRecover personal\_ecRecover returns the address associated with the private key that was used to calculate a signature. ``` method: 'personal_ecRecover', params: [message, signature], ``` ### Transfer This method requires that the user has granted permission to interact with their account first, so please make sure to call eth\_requestAccounts or wallet\_requestPermissions first. #### eth\_sendTransaction return Promise\ ``` window.viction.request({ method: 'eth_sendTransaction', params: [ { from: 'string', to: 'string', gas: 'string', gasPrice: 'string', value: 'string', data: 'string', nonce: 'string' } ] }) ``` ### Decrypt & Encrypt #### eth\_decrypt Requests that Viction Wallet decrypt the specified encrypted message. * The message must have been encrypted using the public encryption key of the specified Ethereum address. return Promise\ ``` window.viction.request({ method: 'eth_decrypt', params: [encryptedMessage, accounts[0]], }) .then((decryptedMessage) => console.log('The decrypted message is:', decryptedMessage) ) .catch((error) => console.log(error.message)); }) ``` #### eth\_getEncryptionPublicKey Requests that the user share their public encryption key. Returns a public encryption key, or rejects if the user denies the request. return Promise\- The public encryption key of the Ethereum account whose encryption key should be retrived ``` let encryptionPublicKey window.viction.request({ method: 'eth_getEncryptionPublicKey', params: [accounts[0]], // you must have access to the specified account }) .then((result) => { encryptionPublicKey = result; }) .catch((error) => { if (error.code === 4001) { // EIP-1193 userRejectedRequest error console.log("We can't encrypt anything without the key."); } else { console.error(error); } }); ``` #### Encrypt ``` const ethUtil = require('ethereumjs-util'); const encryptedMessage = ethUtil.bufferToHex( Buffer.from( JSON.stringify( sigUtil.encrypt( { publicKey: encryptionPublicKey, data: 'hello world!, version: 'x25519-xsalsa20-poly1305', } ) ), 'utf8' ) ); ``` ### List of events Currently we only support some action event from wallet extension ``` window.viction.on('event_name', callback); ​//Example window.viction.on('close', () => window.location.reload()); window.viction.on('accountsChanged', () => window.location.reload()); ``` | Events | Trigger | | --------------- | ------------------------------------------------ | | accountsChanged | Receive when active account changed in Extension | | networkChanged | Receive when active network changed in Extension | | Method | Description | | -------------------- | --------------------- | | on(event, callback) | Add event listener | | off(event, callback) | Remove event listener | --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.viction.xyz/viction-wallet/developer-guide.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.