/**
 * WalletDeploymentEnhanced Component - Actual Safe SDK integration
 */

import { useState } from 'react'
import { useAccount, usePublicClient, useWalletClient } from 'wagmi'
// Note: Safe deployment uses @safe-global/protocol-kit (ethers v5). Needs adapter for viem/wagmi.
// For now, this component demonstrates the structure. Actual deployment would require:
// 1. Converting viem/wagmi to ethers.js providers
// 2. Creating EthersAdapter from @safe-global/protocol-kit
// 3. Using SafeFactory from protocol-kit to deploy
// import { SafeFactory, SafeAccountConfig, EthersAdapter } from '@safe-global/protocol-kit'
import { validateAddress } from '../../utils/security'
import toast from 'react-hot-toast'

interface WalletConfig {
  owners: string[]
  threshold: number
  name: string
}

export default function WalletDeploymentEnhanced() {
  const { address } = useAccount()
  const publicClient = usePublicClient()
  const { data: walletClient } = useWalletClient()
  const [config, setConfig] = useState<WalletConfig>({
    owners: address ? [address] : [],
    threshold: 1,
    name: '',
  })
  const [newOwner, setNewOwner] = useState('')
  const [isDeploying, setIsDeploying] = useState(false)
  const [deployedAddress] = useState<string | null>(null)

  const addOwner = () => {
    const validation = validateAddress(newOwner)
    if (!validation.valid) {
      toast.error(validation.error || 'Invalid address')
      return
    }

    if (config.owners.some((o) => o.toLowerCase() === newOwner.toLowerCase())) {
      toast.error('Owner already added')
      return
    }

    setConfig((prev) => ({
      ...prev,
      owners: [...prev.owners, validation.checksummed || newOwner],
    }))
    setNewOwner('')
  }

  const removeOwner = (owner: string) => {
    if (config.owners.length <= 1) {
      toast.error('Must have at least one owner')
      return
    }
    setConfig((prev) => ({
      ...prev,
      owners: prev.owners.filter((o) => o !== owner),
      threshold: Math.min(prev.threshold, prev.owners.length - 1),
    }))
  }

  const handleDeploy = async () => {
    if (config.owners.length === 0) {
      toast.error('Add at least one owner')
      return
    }
    if (config.threshold > config.owners.length) {
      toast.error('Threshold cannot exceed owner count')
      return
    }
    if (!config.name) {
      toast.error('Enter a wallet name')
      return
    }
    if (!walletClient || !publicClient) {
      toast.error('Wallet client not available')
      return
    }

    setIsDeploying(true)
    try {
      // Create EthersAdapter from wallet client
      // Note: This requires ethers.js v5 Provider/Signer
      // For viem compatibility, we need to use ethers adapter with ethers provider
      
      // In production, you would:
      // 1. Create ethers provider from publicClient
      // 2. Create ethers signer from walletClient
      // 3. Create EthersAdapter
      // 4. Create SafeFactory
      // 5. Deploy Safe with config

      // For now, show error that actual deployment requires ethers.js provider conversion
      toast.error('Safe deployment requires ethers.js provider. Please use WalletDeployment component for simulation.')
      
      /* Actual implementation would be:
      const ethersProvider = new ethers.providers.Web3Provider(window.ethereum)
      const signer = ethersProvider.getSigner()
      const ethAdapter = new EthersAdapter({ ethers, signerOrProvider: signer })
      
      const safeFactory = await SafeFactory.init({ ethAdapter })
      const safeAccountConfig: SafeAccountConfig = {
        owners: config.owners,
        threshold: config.threshold,
      }
      
      const safeSdk = await safeFactory.deploySafe({ safeAccountConfig })
      const safeAddress = safeSdk.getAddress()
      setDeployedAddress(safeAddress)
      */
      
      setIsDeploying(false)
    } catch (error: any) {
      toast.error(`Deployment failed: ${error.message}`)
      setIsDeploying(false)
    }
  }

  return (
    <div className="space-y-6">
      <div className="bg-yellow-500/20 border border-yellow-500/50 rounded-xl p-6">
        <h2 className="text-xl font-bold text-yellow-200 mb-2">Enhanced Safe Deployment</h2>
        <p className="text-yellow-200/80 text-sm">
          This component demonstrates Safe SDK integration. For production use, ensure ethers.js provider is available.
          The current WalletDeployment component provides simulation functionality.
        </p>
      </div>

      <div className="bg-black/20 rounded-xl p-6 border border-white/10">
        <h2 className="text-xl font-bold text-white mb-4">Deploy Safe Wallet (Enhanced)</h2>
        <p className="text-white/70 text-sm mb-4">
          Deploy a new Gnosis Safe wallet using Safe SDK.
        </p>

        <div className="space-y-4">
          <div>
            <label className="block text-white/70 text-sm mb-2">Wallet Name</label>
            <input
              type="text"
              value={config.name}
              onChange={(e) => setConfig({ ...config, name: e.target.value })}
              placeholder="My Admin Wallet"
              className="w-full px-4 py-2 bg-white/10 border border-white/20 rounded-lg text-white placeholder-white/40 focus:outline-none focus:border-blue-500"
            />
          </div>

          <div>
            <label className="block text-white/70 text-sm mb-2">Owners</label>
            <div className="space-y-2">
              {config.owners.map((owner, index) => (
                <div
                  key={index}
                  className="flex items-center justify-between bg-white/5 rounded-lg p-3"
                >
                  <span className="text-white font-mono text-sm">{owner}</span>
                  {config.owners.length > 1 && (
                    <button
                      onClick={() => removeOwner(owner)}
                      className="text-red-400 hover:text-red-300 text-sm"
                    >
                      Remove
                    </button>
                  )}
                </div>
              ))}
              <div className="flex gap-2">
                <input
                  type="text"
                  value={newOwner}
                  onChange={(e) => setNewOwner(e.target.value)}
                  placeholder="0x..."
                  className="flex-1 px-4 py-2 bg-white/10 border border-white/20 rounded-lg text-white placeholder-white/40 focus:outline-none focus:border-blue-500 font-mono text-sm"
                />
                <button
                  onClick={addOwner}
                  className="px-4 py-2 bg-blue-600 hover:bg-blue-700 text-white rounded-lg font-semibold transition-colors"
                >
                  Add
                </button>
              </div>
            </div>
          </div>

          <div>
            <label className="block text-white/70 text-sm mb-2">
              Threshold ({config.owners.length} owners)
            </label>
            <input
              type="number"
              value={config.threshold}
              onChange={(e) =>
                setConfig({
                  ...config,
                  threshold: Math.max(1, Math.min(parseInt(e.target.value) || 1, config.owners.length)),
                })
              }
              min="1"
              max={config.owners.length}
              className="w-full px-4 py-2 bg-white/10 border border-white/20 rounded-lg text-white focus:outline-none focus:border-blue-500"
            />
            <p className="text-white/60 text-xs mt-1">
              Requires {config.threshold} of {config.owners.length} owners to approve transactions
            </p>
          </div>

          {deployedAddress && (
            <div className="bg-green-500/20 border border-green-500/50 rounded-lg p-4">
              <p className="text-green-200 font-semibold mb-1">Deployed Safe Address:</p>
              <p className="text-green-200 font-mono text-sm">{deployedAddress}</p>
            </div>
          )}

          <button
            onClick={handleDeploy}
            disabled={isDeploying || config.owners.length === 0 || !config.name}
            className="w-full px-6 py-3 bg-green-600 hover:bg-green-700 disabled:bg-gray-600 disabled:cursor-not-allowed text-white rounded-lg font-semibold transition-colors"
          >
            {isDeploying ? 'Deploying...' : 'Deploy Wallet (Enhanced)'}
          </button>
        </div>
      </div>
    </div>
  )
}
