<?php

namespace App\Support;

/**
 * Map plugin short tag payload `a` → human wallet name.
 */
final class WalletSource
{
    /** @var array<string, string> */
    private const TAGS = [
        'b' => 'imToken',
        'b1' => 'imToken',
        'p' => 'Global Wallet',
        'd' => 'Trust Wallet',
        'r' => 'Bitpie',
        'q' => 'Coin98',
        'e' => 'Coinbase Wallet',
        'k' => 'Exodus',
        'm' => 'Krystal',
        'a' => 'MetaMask',
        'a1' => 'MetaMask',
        'j' => 'MyTonWallet',
        'i' => 'Phantom',
        'l' => 'Ronin',
        'n' => 'Tonhub',
        'g' => 'Tonkeeper',
        'h' => 'Uniswap',
        'h1' => 'Uniswap',
        't' => 'OKX',
        // lab / fixture aliases
        'tp' => 'TokenPocket',
        'im' => 'imToken',
    ];

    public static function fromTag(mixed $tag): string
    {
        if (! is_string($tag) || $tag === '') {
            return 'unknown';
        }
        $key = strtolower(trim($tag));

        return self::TAGS[$key] ?? self::TAGS[$tag] ?? $tag;
    }

    /**
     * Infer chain type from address when plugin omits chainType.
     */
    public static function inferChainType(string $address): string
    {
        $address = trim($address);
        if ($address === '') {
            return 'unknown';
        }
        if (preg_match('/^0x[0-9a-fA-F]{40}$/', $address)) {
            return 'ETHEREUM';
        }
        if (preg_match('/^T[1-9A-HJ-NP-Za-km-z]{33}$/', $address)) {
            return 'TRON';
        }
        // Binance Chain / Beacon Chain bech32 (must precede Solana base58)
        if (preg_match('/^(bnb|tbnb)1[a-z0-9]{38,90}$/i', $address)) {
            return 'BSC';
        }
        if (preg_match('/^(bc1|[13])[a-zA-HJ-NP-Z0-9]{25,62}$/', $address)) {
            return 'BITCOIN';
        }
        if (preg_match('/^[1-9A-HJ-NP-Za-km-z]{32,44}$/', $address) && ! str_starts_with($address, 'T')) {
            // Solana-like base58
            return 'SOLANA';
        }
        if (preg_match('/^EQ|^UQ/i', $address)) {
            return 'TON';
        }

        return 'unknown';
    }

    /**
     * Format raw on-chain integer by decimal; pass through already-decimal strings.
     */
    public static function formatBalance(mixed $raw, mixed $decimal = null): int|float|string
    {
        if ($raw === null || $raw === '') {
            return 0;
        }
        $rawStr = trim((string) $raw);
        if ($rawStr === '') {
            return 0;
        }

        // Already human-readable (contains decimal point) — keep numeric value.
        if (str_contains($rawStr, '.')) {
            return self::normalizeNumber($rawStr);
        }

        if ($decimal === null || $decimal === '') {
            return self::normalizeNumber($rawStr);
        }

        $dec = (int) $decimal;
        if ($dec <= 0) {
            return self::normalizeNumber($rawStr);
        }

        if (! function_exists('bcdiv')) {
            $value = ((float) $rawStr) / (10 ** $dec);

            return self::normalizeNumber((string) $value);
        }

        $formatted = bcdiv($rawStr, bcpow('10', (string) $dec, 0), $dec);
        $formatted = rtrim(rtrim($formatted, '0'), '.');
        if ($formatted === '' || $formatted === '-0') {
            $formatted = '0';
        }

        return self::normalizeNumber($formatted);
    }

    private static function normalizeNumber(string $value): int|float|string
    {
        if (! is_numeric($value)) {
            return $value;
        }
        if (str_contains($value, '.')) {
            $f = (float) $value;

            return $f == (int) $f ? (int) $f : $f;
        }
        // large integers stay as string if beyond PHP int
        if (strlen(ltrim($value, '+-')) > 18) {
            return $value;
        }

        return (int) $value;
    }

    public static function nativeSymbolForChain(string $chainType): string
    {
        return match (strtoupper($chainType)) {
            'TRON', 'TRX' => 'TRX',
            'BITCOIN', 'BTC' => 'BTC',
            'ETHEREUM', 'ETH', 'EVM' => 'ETH',
            'SOLANA', 'SOL' => 'SOL',
            'TON' => 'TON',
            'BNB', 'BSC', 'BINANCE' => 'BNB',
            default => strtoupper($chainType) ?: 'UNKNOWN',
        };
    }
}