<?php

namespace Leantime\Domain\Bom\Services;

use Illuminate\Support\Facades\Http;

/**
 * Teable OpenAPI 客户端。
 *
 * 把 Teable 作为外部数据库：实时拉取表的字段元数据 + 全量记录。
 *   GET {base}/api/table/{tableId}/field            字段元数据
 *   GET {base}/api/table/{tableId}/record           记录（take/skip 分页）
 * 统一 fieldKeyType=name，字段名（中文亦可）直接作为 JSON key。
 */
class Teable
{
    private const DEFAULT_BASE = 'https://table.universal-onebot.com';

    /**
     * @return array{success:bool,fields:array,records:array,message?:string}
     */
    public function fetchTable(array $source): array
    {
        $base = rtrim(trim($source['baseUrl'] ?? '') ?: self::DEFAULT_BASE, '/');
        $tableId = $source['tableId'] ?? '';
        $token = $source['token'] ?? '';

        if ($tableId === '' || $token === '') {
            return ['success' => false, 'message' => '缺少 tableId 或 token', 'fields' => [], 'records' => []];
        }

        try {
            $fieldResp = Http::withToken($token)
                ->timeout(60)
                ->get("$base/api/table/$tableId/field");

            if (! $fieldResp->successful()) {
                return ['success' => false, 'message' => "字段接口 HTTP {$fieldResp->status()}", 'fields' => [], 'records' => []];
            }

            $fields = $fieldResp->json() ?? [];

            $records = [];
            $skip = 0;
            $take = 1000;

            while (true) {
                $recResp = Http::withToken($token)
                    ->timeout(60)
                    ->get("$base/api/table/$tableId/record", [
                        'fieldKeyType' => 'name',
                        'take' => $take,
                        'skip' => $skip,
                    ]);

                if (! $recResp->successful()) {
                    return ['success' => false, 'message' => "记录接口 HTTP {$recResp->status()}", 'fields' => $fields, 'records' => []];
                }

                $body = $recResp->json() ?? [];
                $page = $body['records'] ?? [];
                $records = array_merge($records, $page);

                if (count($page) < $take) {
                    break;
                }
                $skip += $take;
            }

            return ['success' => true, 'fields' => $fields, 'records' => $records];
        } catch (\Throwable $e) {
            return ['success' => false, 'message' => $e->getMessage(), 'fields' => [], 'records' => []];
        }
    }

    /**
     * 从用户粘贴的整段 API 文档 / curl 命令中解析出连接信息。
     *
     * 容错策略：先清洗零宽字符/markdown 符号，再按 URL → Token → 表名顺序多模式兜底，
     * 解析不完整时返回 missing 清单与已找到的部分，供前端手动补齐。
     *
     * @return array{success:bool,baseUrl:string,tableId:string,token:string,name:string,missing:array,message?:string}
     */
    public function parseConfig(string $text): array
    {
        // 粘贴文本可能带零宽字符（U+200B 等）或 markdown 装饰，先做无害化清洗
        $clean = (string) preg_replace('/[\x{200B}-\x{200D}\x{2060}\x{FEFF}\x{00AD}]/u', '', (string) $text);
        $clean = str_replace(["\r\n", "\r"], "\n", $clean);
        $clean = str_replace(['`', '**'], ['', ''], $clean);

        $base = '';
        $tableId = '';
        $token = '';
        $name = '';

        // 1) 表名：# Table: xxx（兼容中英文冒号）
        if (preg_match('/^#+\s*Table\s*[:：]\s*(.+)$/mi', $clean, $m)) {
            $name = trim($m[1]);
        }

        // 2) 收集所有 URL，优先取含 /api/table/ 或 /table/ 的完整地址
        $urls = [];
        if (preg_match_all('#https?://[^\s"\'<>()\[\]]+#', $clean, $mm)) {
            $urls = $mm[0];
        }
        foreach ($urls as $u) {
            if ($tableId === '' && preg_match('#/(?:api/)?table/([A-Za-z0-9_-]+)#', $u, $m)) {
                $tableId = $m[1];
                if (preg_match('#^(https?://[^/\s]+)#', $u, $bm)) {
                    $base = $bm[1];
                }
                break;
            }
        }

        // 3) Token：Bearer 前缀 → Token:/API Key: 行 → 任意位置 teable_ 开头串
        $tokPatterns = [
            '#(?:Bearer|bearer)\s+([A-Za-z0-9_.+/=~%-]+)#',
            '#(?:Token|token|API\s*Key|api\s*key)\s*[:：=]\s*([A-Za-z0-9_.+/=~%-]+)#',
            '#(teable_[A-Za-z0-9_.+/=~%-]+)#',
        ];
        foreach ($tokPatterns as $p) {
            if (preg_match($p, $clean, $m)) {
                $token = $m[1];
                break;
            }
        }

        // 4) 表 ID 兜底：任意 tbl 开头长串
        if ($tableId === '' && preg_match('#\btbl[A-Za-z0-9_-]{8,}#i', $clean, $m)) {
            $tableId = $m[0];
        }

        // 5) Base URL 兜底：Base URL 行（值可在下一行）→ 任意 URL 的 host
        if ($base === '') {
            if (preg_match('#(?:Base\s*URL|baseUrl|基础\s*URL)\s*[:：]\s*(https?://[^\s"\'<>()\[\]]+)#i', $clean, $m)
                || preg_match('#(?:Base\s*URL|baseUrl|基础\s*URL)\s*[:：]?\s*\n\s*(https?://[^\s"\'<>()\[\]]+)#i', $clean, $m)) {
                $base = rtrim($m[1], '/');
            } elseif (! empty($urls)) {
                if (preg_match('#^(https?://[^/\s]+)#', $urls[0], $bm)) {
                    $base = $bm[1];
                }
            }
        }

        $missing = [];
        if ($base === '') {
            $missing[] = 'Base URL';
        }
        if ($tableId === '') {
            $missing[] = 'Table ID';
        }
        if ($token === '') {
            $missing[] = 'Token';
        }

        if (! empty($missing)) {
            return [
                'success' => false,
                'message' => '缺少：'.implode('、', $missing).'。请确认粘贴内容包含表地址（https://…/api/table/tbl…）和 Token（teable_…），或直接在下方输入框手动补齐',
                'baseUrl' => $base,
                'tableId' => $tableId,
                'token' => $token,
                'name' => $name,
                'missing' => $missing,
            ];
        }

        return [
            'success' => true,
            'message' => '解析成功',
            'baseUrl' => $base,
            'tableId' => $tableId,
            'token' => $token,
            'name' => $name,
            'missing' => [],
        ];
    }
}