import { TipLink } from "@tiplink/api"
import {
  Transaction,
  SystemProgram,
  LAMPORTS_PER_SOL,
  sendAndConfirmTransaction,
  ComputeBudgetProgram
} from "@solana/web3.js"
import {
  getAssociatedTokenAddress,
  createTransferInstruction,
  getMint,
  createAssociatedTokenAccountInstruction
} from "@solana/spl-token"

const MINIMUM_SOL_BALANCE = 0.003 * LAMPORTS_PER_SOL

export async function create_TipLink(agent, amount, splmintAddress) {
  try {
    const tiplink = await TipLink.create()

    if (!splmintAddress) {
      const transaction = new Transaction()
      transaction.add(
        SystemProgram.transfer({
          fromPubkey: agent.wallet_address,
          toPubkey: tiplink.keypair.publicKey,
          lamports: amount * LAMPORTS_PER_SOL
        })
      )

      const signature = await sendAndConfirmTransaction(
        agent.connection,
        transaction,
        [agent.wallet],
        { commitment: "confirmed" }
      )

      return {
        url: tiplink.url.toString(),
        signature
      }
    } else {
      const fromAta = await getAssociatedTokenAddress(
        splmintAddress,
        agent.wallet_address
      )
      const toAta = await getAssociatedTokenAddress(
        splmintAddress,
        tiplink.keypair.publicKey
      )

      const mintInfo = await getMint(agent.connection, splmintAddress)
      const adjustedAmount = amount * Math.pow(10, mintInfo.decimals)

      const transaction = new Transaction()

      transaction.add(
        ComputeBudgetProgram.setComputeUnitPrice({
          microLamports: 5000
        })
      )

      transaction.add(
        SystemProgram.transfer({
          fromPubkey: agent.wallet_address,
          toPubkey: tiplink.keypair.publicKey,
          lamports: MINIMUM_SOL_BALANCE
        })
      )

      transaction.add(
        createAssociatedTokenAccountInstruction(
          agent.wallet_address,
          toAta,
          tiplink.keypair.publicKey,
          splmintAddress
        )
      )

      transaction.add(
        createTransferInstruction(
          fromAta,
          toAta,
          agent.wallet_address,
          adjustedAmount
        )
      )

      const signature = await sendAndConfirmTransaction(
        agent.connection,
        transaction,
        [agent.wallet],
        { commitment: "confirmed" }
      )

      return {
        url: tiplink.url.toString(),
        signature
      }
    }
  } catch (error) {
    console.error("Error creating TipLink or sending funds:", error.message)
    throw new Error(`Failed to create TipLink: ${error.message}`)
  }
}