<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Concerns\ResolvesPlatformAdminContext;
use App\Http\Controllers\Controller;
use App\Models\PlatformOrder;
use App\Support\BackUrl;
use Illuminate\Http\Request;
use Illuminate\View\View;

class PlatformBatchController extends Controller
{
    use ResolvesPlatformAdminContext;

    public function show(Request $request): View
    {
        $this->ensurePlatformAdmin($request);

        $type = trim((string) $request->query('type', ''));
        $runId = trim((string) $request->query('run_id', ''));

        $type = $type === 'bmpa' ? 'bmpa' : ($type === 'bas' ? 'bas' : '');

        $incomingBack = (string) $request->query('back', '');
        $safeBackForLinks = BackUrl::sanitizeForLinks($incomingBack);

        if ($type === '' || $runId === '') {
            return view('admin.platform_batches.show', [
                'type' => $type,
                'runId' => $runId,
                'safeBackForLinks' => $safeBackForLinks,
                'error' => '参数不完整：请提供 type（bas/bmpa）与 run_id。',
                'summary' => null,
                'fallbackCounts' => null,
                'governanceLinks' => [],
            ]);
        }

        // 基于订单 meta 的扁平字段回捞 last_result（冗余写入策略下可行）
        // 注意：为避免全表扫描，这里先按 run_id 过滤再取最近一条。
        $keyPrefix = $type === 'bas' ? '$.batch_activation' : '$.batch_mark_paid_and_activate';

        $query = PlatformOrder::query();
        $driver = $query->getQuery()->getConnection()->getDriverName();

        if ($driver === 'sqlite') {
            $query->whereRaw("JSON_EXTRACT(meta, '{$keyPrefix}.run_id') = ?", [$runId]);
        } else {
            $query->whereRaw("JSON_UNQUOTE(JSON_EXTRACT(meta, '{$keyPrefix}.run_id')) = ?", [$runId]);
        }

        $order = $query->orderByDesc('id')->first(['id', 'meta']);

        $summary = null;
        if ($order) {
            $summary = data_get($order->meta, $type === 'bas'
                ? 'batch_activation.last_result'
                : 'batch_mark_paid_and_activate.last_result');
        }

        // 兜底：若 last_result 未写入（例如批量 job 尚未跑完，或历史数据未补齐），
        // 则基于同批次订单粗略统计：matched/processed/failed（失败口径：BAS=subscription_activation_error，BMPA=batch_mark_paid_and_activate_error）。
        // 注意：这里尽量不做重计算 success（因为“成功”的定义可能随业务变动）；仅用于 UI 提示。
        $fallbackCounts = null;
        if ($summary === null) {
            $baseQuery = PlatformOrder::query();
            $driver2 = $baseQuery->getQuery()->getConnection()->getDriverName();

            if ($driver2 === 'sqlite') {
                $baseQuery->whereRaw("JSON_EXTRACT(meta, '{$keyPrefix}.run_id') = ?", [$runId]);
            } else {
                $baseQuery->whereRaw("JSON_UNQUOTE(JSON_EXTRACT(meta, '{$keyPrefix}.run_id')) = ?", [$runId]);
            }

            $matched = (int) (clone $baseQuery)->count();

            $failed = 0;
            if ($type === 'bas') {
                $failed = (int) (clone $baseQuery)
                    ->whereRaw("JSON_EXTRACT(meta, '$.subscription_activation_error.message') IS NOT NULL")
                    ->count();
            }
            if ($type === 'bmpa') {
                $failed = (int) (clone $baseQuery)
                    ->whereRaw("JSON_EXTRACT(meta, '$.batch_mark_paid_and_activate_error.message') IS NOT NULL")
                    ->count();
            }

            $fallbackCounts = [
                'matched' => $matched,
                'failed' => $failed,
            ];
        }

        // 治理入口：全部/失败/按Top原因/可重试
        $governanceLinks = [];

        if ($type === 'bas') {
            $governanceLinks['all'] = BackUrl::withBackAndFragment('/admin/platform-orders?' . \Illuminate\Support\Arr::query([
                'batch_activation_run_id' => $runId,
            ]), $safeBackForLinks, 'filters');

            $governanceLinks['failed'] = BackUrl::withBackAndFragment('/admin/platform-orders?' . \Illuminate\Support\Arr::query([
                'batch_activation_run_id' => $runId,
                'sync_status' => 'failed',
            ]), $safeBackForLinks, 'filters');

            $governanceLinks['retry_syncable'] = BackUrl::withBackAndFragment('/admin/platform-orders?' . \Illuminate\Support\Arr::query([
                'batch_activation_run_id' => $runId,
                'sync_status' => 'unsynced',
                'syncable_only' => '1',
            ]), $safeBackForLinks, 'filters');

            $topReason = (string) (data_get($summary, 'top_reasons.0.reason') ?? '');
            $maxLen = (int) config('saasshop.platform_orders.sync_error_keyword_link_max_len', 200);
            $maxLen = max(50, min(1000, $maxLen));
            if ($topReason !== '' && mb_strlen($topReason) <= $maxLen) {
                $governanceLinks['top_reason'] = BackUrl::withBackAndFragment('/admin/platform-orders?' . \Illuminate\Support\Arr::query([
                    'batch_activation_run_id' => $runId,
                    'sync_status' => 'failed',
                    'sync_error_keyword' => $topReason,
                ]), $safeBackForLinks, 'filters');
            }
        }

        if ($type === 'bmpa') {
            $governanceLinks['all'] = BackUrl::withBackAndFragment('/admin/platform-orders?' . \Illuminate\Support\Arr::query([
                'batch_bmpa_run_id' => $runId,
            ]), $safeBackForLinks, 'filters');

            $governanceLinks['failed'] = BackUrl::withBackAndFragment('/admin/platform-orders?' . \Illuminate\Support\Arr::query([
                'batch_bmpa_run_id' => $runId,
                'bmpa_failed_only' => '1',
            ]), $safeBackForLinks, 'filters');

            $governanceLinks['retry_processable'] = BackUrl::withBackAndFragment('/admin/platform-orders?' . \Illuminate\Support\Arr::query([
                'batch_bmpa_run_id' => $runId,
                'status' => 'pending',
                'payment_status' => 'unpaid',
            ]), $safeBackForLinks, 'filters');

            $topReason = (string) (data_get($summary, 'top_reasons.0.reason') ?? '');
            $maxLen = (int) config('saasshop.platform_orders.sync_error_keyword_link_max_len', 200);
            $maxLen = max(50, min(1000, $maxLen));
            if ($topReason !== '' && mb_strlen($topReason) <= $maxLen) {
                $governanceLinks['top_reason'] = BackUrl::withBackAndFragment('/admin/platform-orders?' . \Illuminate\Support\Arr::query([
                    'batch_bmpa_run_id' => $runId,
                    'bmpa_failed_only' => '1',
                    'bmpa_error_keyword' => $topReason,
                ]), $safeBackForLinks, 'filters');
            }
        }

        return view('admin.platform_batches.show', [
            'type' => $type,
            'runId' => $runId,
            'safeBackForLinks' => $safeBackForLinks,
            'error' => '',
            'summary' => $summary,
            'fallbackCounts' => $fallbackCounts,
            'governanceLinks' => $governanceLinks,
        ]);
    }
}