package main

import (
	"flag"
	"fmt"
	"os"

	"btcphrasechecker/bitcoin"
	"btcphrasechecker/types"

	"github.com/tyler-smith/go-bip39"
)

const (
	defaultAddressCount = 20
)

func main() {
	mnemonic := flag.String("mnemonic", "", "BIP39 mnemonic phrase")
	passphrase := flag.String("passphrase", "", "Optional passphrase")
	addressCount := flag.Int("count", defaultAddressCount, "Number of addresses to check per derivation path")
	chain := flag.String("chain", "bitcoin", "Blockchain to analyze (bitcoin)")
	flag.Parse()

	if *mnemonic == "" {
		fmt.Println("Usage: btcphrasechecker -mnemonic \"your mnemonic phrase\" [-passphrase \"optional passphrase\"] [-count 20] [-chain bitcoin]")
		os.Exit(1)
	}

	// Validate mnemonic
	if !bip39.IsMnemonicValid(*mnemonic) {
		fmt.Println("Error: Invalid mnemonic phrase")
		os.Exit(1)
	}

	// Generate seed from mnemonic
	seed := bip39.NewSeed(*mnemonic, *passphrase)

	// Analyze based on chain
	switch types.Chain(*chain) {
	case types.ChainBitcoin:
		if err := analyzeBitcoin(seed, *addressCount); err != nil {
			fmt.Printf("Error analyzing Bitcoin wallet: %v\n", err)
			os.Exit(1)
		}
	default:
		fmt.Printf("Error: Unsupported chain '%s'\n", *chain)
		os.Exit(1)
	}
}

func analyzeBitcoin(seed []byte, addressCount int) error {
	// Perform wallet analysis
	summary, err := bitcoin.AnalyzeWallet(seed, addressCount, true)
	if err != nil {
		return err
	}

	// Fetch transaction history for active addresses
	if len(summary.ActiveAddresses) > 0 {
		fmt.Println("Fetching transaction history...")
		fmt.Println()
		if err := bitcoin.FetchTransactionHistory(summary); err != nil {
			return err
		}
	}

	// Display summary
	displaySummary(summary)

	// Display transaction history
	if len(summary.TransactionHistory) > 0 {
		displayTransactionHistory(summary)
	}

	return nil
}

func displaySummary(summary *types.WalletSummary) {
	fmt.Println("======================")
	fmt.Println("Summary")
	fmt.Println("======================")
	fmt.Printf("Total Balance:        %.8f BTC\n", float64(summary.TotalBalance)/100000000.0)
	fmt.Printf("Total Received:       %.8f BTC (%d transactions)\n",
		float64(summary.TotalReceived)/100000000.0,
		summary.ReceiveTxCount)
	fmt.Printf("Total Sent:           %.8f BTC (%d transactions)\n",
		float64(summary.TotalSent)/100000000.0,
		summary.SendTxCount)
	fmt.Printf("Total Transactions:   %d\n", summary.TotalTxCount)
	fmt.Printf("Active Addresses:     %d\n", len(summary.ActiveAddresses))
	fmt.Println()

	if len(summary.ActiveAddresses) > 0 {
		fmt.Println("Active Addresses Summary:")
		fmt.Println("-----------------------------------------------------------")
		for _, addr := range summary.ActiveAddresses {
			fmt.Printf("  %s\n", addr.Address)
			fmt.Printf("    Path:     %s\n", addr.Path)
			fmt.Printf("    Balance:  %.8f BTC\n", float64(addr.Balance)/100000000.0)
			fmt.Printf("    Received: %.8f BTC\n", float64(addr.Received)/100000000.0)
			fmt.Printf("    Sent:     %.8f BTC\n", float64(addr.Sent)/100000000.0)
			fmt.Printf("    Txs:      %d\n", addr.TxCount)
			fmt.Println()
		}
	}
}

func displayTransactionHistory(summary *types.WalletSummary) {
	fmt.Println("======================")
	fmt.Println("Transaction History")
	fmt.Println("======================")
	fmt.Printf("%-20s %-12s %-10s %-15s %-15s %s\n",
		"Date", "Type", "Confirmed", "Amount (BTC)", "Balance (BTC)", "TxID")
	fmt.Println("---------------------------------------------------------------------------------------------------------------------------")

	for _, tx := range summary.TransactionHistory {
		dateStr := tx.Time.Format("2006-01-02 15:04:05")
		confirmedStr := "No"
		if tx.Confirmed {
			confirmedStr = "Yes"
		}

		typeSymbol := ""
		switch tx.Type {
		case "received":
			typeSymbol = "+ Received"
		case "sent":
			typeSymbol = "- Sent"
		case "self":
			typeSymbol = "↔ Self"
		}

		fmt.Printf("%-20s %-12s %-10s %14.8f %14.8f %s\n",
			dateStr,
			typeSymbol,
			confirmedStr,
			float64(tx.Amount)/100000000.0,
			float64(tx.Balance)/100000000.0,
			tx.TxID[:16]+"...")
	}
	fmt.Println()
}