import { useContext } from 'react'
import { ConnectionContext } from '../providers/ConnectionProvider'
import type { UseSessionReturn } from '@meshconnect/uwc-types'

/**
 * Hook for accessing the current wallet session state
 * @returns Session information including active address, network, and connection details
 * @throws Error if used outside of ConnectionProvider
 * @example
 * ```tsx
 * const { activeAddress, activeNetwork, availableNetworks } = useSession()
 *
 * if (activeAddress) {
 *   console.log(`Connected: ${activeAddress}`)
 *   console.log(`Network: ${activeNetwork?.name}`)
 *   console.log(`Available networks: ${availableNetworks.length}`)
 * }
 * ```
 */
export function useSession(): UseSessionReturn {
  const context = useContext(ConnectionContext)

  if (!context) {
    throw new Error('useSession must be used within a ConnectionProvider')
  }

  const { session } = context

  return {
    session,
    activeAddress: session.activeAddress,
    activeNetwork: session.activeNetwork,
    activeWalletCapabilities: session.activeWalletCapabilities,
    activeNetworkWalletCapabilities: session.activeNetworkWalletCapabilities,
    availableNetworks: session.availableNetworks,
    activeConnector: session.connectionMode,
    availableAddresses: session.availableAddresses,
    publicKey: session.publicKey
  }
}