Cosmos

// Detect OneKey Cosmos provider
const provider = window.$onekey?.cosmos
 
if (!provider) {
  throw new Error('OneKey Cosmos provider not detected')
}
 
// Check if it's OneKey
console.log('Provider:', provider.isOneKey ? 'OneKey' : 'Unknown')

const chainId = 'cosmoshub-4'
 
// Enable the chain - returns key info
const key = await provider.enable(chainId)
 
// Or enable multiple chains at once
await provider.enable(['cosmoshub-4', 'osmosis-1', 'juno-1'])

const chainId = 'cosmoshub-4'
const key = await provider.getKey(chainId)
 
console.log({
  name: key.name,           // Account name
  algo: key.algo,           // Signing algorithm (secp256k1)
  pubKey: key.pubKey,       // Public key (Uint8Array)
  address: key.address,     // Bech32 address (Uint8Array)
  bech32Address: key.bech32Address,  // Bech32 formatted address
  isNanoLedger: key.isNanoLedger,    // Hardware wallet flag
})

await provider.experimentalSuggestChain({
  chainId: 'my-chain-1',
  chainName: 'My Custom Chain',
  rpc: 'https://rpc.mychain.io',
  rest: 'https://lcd.mychain.io',
  bip44: { coinType: 118 },
  bech32Config: {
    bech32PrefixAccAddr: 'mychain',
    bech32PrefixAccPub: 'mychainpub',
    bech32PrefixValAddr: 'mychainvaloper',
    bech32PrefixValPub: 'mychainvaloperpub',
    bech32PrefixConsAddr: 'mychainvalcons',
    bech32PrefixConsPub: 'mychainvalconspub',
  },
  currencies: [{
    coinDenom: 'TOKEN',
    coinMinimalDenom: 'utoken',
    coinDecimals: 6,
  }],
  feeCurrencies: [{
    coinDenom: 'TOKEN',
    coinMinimalDenom: 'utoken',
    coinDecimals: 6,
    gasPriceStep: { low: 0.01, average: 0.025, high: 0.04 },
  }],
  stakeCurrency: {
    coinDenom: 'TOKEN',
    coinMinimalDenom: 'utoken',
    coinDecimals: 6,
  },
})

await provider.disconnect()

const chainId = 'cosmoshub-4'
const signer = 'cosmos1...'
 
const signDoc = {
  chain_id: chainId,
  account_number: '0',
  sequence: '0',
  fee: {
    amount: [{ denom: 'uatom', amount: '5000' }],
    gas: '200000',
  },
  msgs: [{
    type: 'cosmos-sdk/MsgSend',
    value: {
      from_address: signer,
      to_address: 'cosmos1...',
      amount: [{ denom: 'uatom', amount: '1000000' }],
    },
  }],
  memo: '',
}
 
const result = await provider.signAmino(chainId, signer, signDoc)
 
console.log({
  signed: result.signed,       // Signed document
  signature: result.signature, // { pub_key, signature }
})

import { makeSignDoc } from '@cosmjs/proto-signing'
 
const chainId = 'cosmoshub-4'
const signer = 'cosmos1...'
 
const signDoc = makeSignDoc(
  bodyBytes,      // Transaction body
  authInfoBytes,  // Auth info with fee
  chainId,
  accountNumber
)
 
const result = await provider.signDirect(chainId, signer, signDoc)
 
console.log({
  signed: result.signed,
  signature: result.signature,
})

const chainId = 'cosmoshub-4'
const signer = 'cosmos1...'
const data = 'Login to MyApp at 2024-01-01T00:00:00Z'
 
const signature = await provider.signArbitrary(chainId, signer, data)
 
// Verify the signature
const isValid = await provider.verifyArbitrary(chainId, signer, data, signature)
console.log('Signature valid:', isValid)

const chainId = 'cosmoshub-4'
const txBytes = new Uint8Array([...]) // Signed transaction bytes
 
// Broadcast modes: 'block', 'sync', 'async'
const result = await provider.sendTx(chainId, txBytes, 'sync')
 
console.log('TX Hash:', result)

import { SigningStargateClient } from '@cosmjs/stargate'
 
const chainId = 'cosmoshub-4'
 
// Auto-detect best signer type
const offlineSigner = await provider.getOfflineSignerAuto(chainId)
 
// Or use specific signer types
const aminoSigner = provider.getOfflineSignerOnlyAmino(chainId)
const directSigner = provider.getOfflineSigner(chainId)
 
// Use with CosmJS
const client = await SigningStargateClient.connectWithSigner(
  'https://rpc.cosmos.network',
  offlineSigner
)
 
// Send tokens
const result = await client.sendTokens(
  senderAddress,
  recipientAddress,
  [{ denom: 'uatom', amount: '1000000' }],
  { amount: [{ denom: 'uatom', amount: '5000' }], gas: '200000' }
)

interface Key {
  name: string              // Human-readable name
  algo: string              // Signing algorithm
  pubKey: Uint8Array        // Public key bytes
  address: Uint8Array       // Address bytes
  bech32Address: string     // Bech32 formatted address
  isNanoLedger: boolean     // True if hardware wallet
  isKeystone: boolean       // True if Keystone hardware
}

try {
  await provider.enable('cosmoshub-4')
} catch (error) {
  if (error.code === 4001) {
    console.log('User rejected the request')
  } else if (error.message.includes('not supported')) {
    console.log('Chain not supported, try experimentalSuggestChain')
  } else {
    console.error('Connection failed:', error)
  }
}

// Before (Keplr only)
const provider = window.keplr
 
// After (OneKey with Keplr fallback)
const provider = window.$onekey?.cosmos || window.keplr