/**
 * Phoenix Wallet Registry Service
 * Wallet mapping, chain support, policy engine, and recovery
 */

import { getDb } from '../../db/index.js'
import { logger } from '../../lib/logger.js'

export interface Wallet {
  walletId: string
  userId: string
  orgId: string | null
  address: string
  chainId: number
  custodyType: 'USER' | 'SHARED' | 'PLATFORM'
  status: 'ACTIVE' | 'SUSPENDED' | 'RECOVERED'
}

export interface TransactionRequest {
  from: string
  to: string
  value: string
  data?: string
  chainId: number
}

export interface TransactionSimulation {
  success: boolean
  gasEstimate: string
  error?: string
  warnings?: string[]
}

class WalletRegistryService {
  /**
   * Register a wallet
   */
  async registerWallet(
    userId: string,
    address: string,
    chainId: number,
    custodyType: 'USER' | 'SHARED' | 'PLATFORM',
    orgId?: string
  ): Promise<Wallet> {
    const db = getDb()
    
    const result = await db.query(
      `INSERT INTO wallets (user_id, org_id, address, chain_id, custody_type, status)
       VALUES ($1, $2, $3, $4, $5, 'ACTIVE')
       RETURNING *`,
      [userId, orgId || null, address, chainId, custodyType]
    )

    logger.info('Wallet registered', { walletId: result.rows[0].id, address })
    return this.mapWallet(result.rows[0])
  }

  /**
   * Build a transaction
   */
  async buildTransaction(request: TransactionRequest): Promise<string> {
    // This would use a transaction builder service with deterministic encoding
    logger.info('Building transaction', { request })
    
    // Placeholder - would integrate with actual transaction builder
    return '0x' // Serialized transaction
  }

  /**
   * Simulate a transaction
   */
  async simulateTransaction(request: TransactionRequest): Promise<TransactionSimulation> {
    logger.info('Simulating transaction', { request })
    
    // Placeholder - would call chain RPC for simulation
    return {
      success: true,
      gasEstimate: '21000',
      warnings: []
    }
  }

  /**
   * Get wallets for user
   */
  async getWalletsForUser(userId: string, chainId?: number): Promise<Wallet[]> {
    const db = getDb()
    
    const query = chainId
      ? `SELECT * FROM wallets WHERE user_id = $1 AND chain_id = $2`
      : `SELECT * FROM wallets WHERE user_id = $1`
    
    const params = chainId ? [userId, chainId] : [userId]
    const result = await db.query(query, params)
    
    return result.rows.map(this.mapWallet)
  }

  private mapWallet(row: any): Wallet {
    return {
      walletId: row.id,
      userId: row.user_id,
      orgId: row.org_id,
      address: row.address,
      chainId: row.chain_id,
      custodyType: row.custody_type,
      status: row.status
    }
  }
}

export const walletRegistryService = new WalletRegistryService()