<?php

namespace App\Business\KukaPostingBase;

use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Http\Request;
use Throwable;

class KukaPostingBasePageData
{
    public function __construct(private readonly KukaPostingBaseRepository $repository)
    {
    }

    /**
     * @return array{
     *     directory: array<string, mixed>,
     *     rows: mixed,
     *     filters: array<string, mixed>,
     *     periods: list<string>,
     *     statuses: list<string>,
     *     stores: list<string>,
     *     import: ?array<string, mixed>,
     *     summary: array<string, mixed>,
     *     error: ?string
     * }
     */
    public function build(Request $request, int $companyId): array
    {
        $stores = array_values((array) config('kuka_posting.stores', []));
        $fields = array_values((array) config('kuka_posting.fields', []));
        $available = $this->repository->available();
        $periods = $available ? $this->repository->periods($companyId) : [];
        $latest = $available ? $this->repository->latestImport($companyId) : null;

        $period = trim((string) $request->query('period', ''));
        if (preg_match('/^\d{4}-(0[1-9]|1[0-2])$/', $period) !== 1) {
            $period = (string) ($latest->period ?? ($periods[0] ?? now()->format('Y-m')));
        }

        $storeName = trim((string) $request->query('store_name', ''));
        if ($storeName !== '' && ! in_array($storeName, $stores, true)) {
            $storeName = '';
        }

        $status = mb_substr(trim((string) $request->query('status', '')), 0, 64);
        $keyword = mb_substr(trim((string) $request->query('keyword', '')), 0, 120);
        $perPage = (int) $request->integer('per_page', 50);
        if (! in_array($perPage, [50, 100, 200], true)) {
            $perPage = 50;
        }
        $page = max(1, (int) $request->integer('page', 1));

        $filters = [
            'period' => $period,
            'store_name' => $storeName,
            'status' => $status,
            'keyword' => $keyword,
            'per_page' => $perPage,
        ];

        $error = $available ? null : '顾家过账基础数据镜像尚未建立，请先执行数据库迁移。';
        try {
            $rows = $available
                ? $this->repository->paginate($companyId, $period, $filters, $page, $perPage)
                : new LengthAwarePaginator([], 0, $perPage, $page, [
                    'path' => $request->url(),
                    'query' => $request->query(),
                ]);
            $rows->setCollection($rows->getCollection()->map(function (object $row): object {
                $values = json_decode((string) $row->source_values, true);
                if (! is_array($values)) {
                    $values = [];
                }
                $values['_row_id'] = $row->id;

                return (object) $values;
            }));
            $statuses = $available ? $this->repository->statuses($companyId, $period) : [];
        } catch (Throwable $exception) {
            report($exception);
            $statuses = [];
            $error = '顾家过账基础数据暂时无法读取，请稍后重试；这不代表业务数据为 0。';
            $rows = new LengthAwarePaginator([], 0, $perPage, $page, [
                'path' => $request->url(),
                'query' => $request->query(),
            ]);
        }

        $import = $available ? $this->repository->importFor($companyId, $period) : null;
        $importData = null;
        if ($import !== null) {
            $storeCounts = json_decode((string) ($import->store_counts ?? ''), true);
            $importData = [
                'period' => (string) $import->period,
                'row_count' => (int) $import->row_count,
                'store_count' => (int) $import->store_count,
                'order_count' => (int) $import->order_count,
                'store_counts' => is_array($storeCounts) ? $storeCounts : [],
                'file_name' => (string) $import->file_name,
                'file_sha256' => (string) $import->file_sha256,
                'source_sheet' => (string) $import->source_sheet,
                'completed_at' => (string) $import->completed_at,
            ];
        }

        return [
            'directory' => [
                'icon' => 'dataset',
                'status' => $importData === null ? '尚未导入' : '聚水潭原始明细',
                'description' => '聚水潭“销售主题分析（新版）· 商品利润 · 明细（订单商品）”原始导出。仅保留指定 12 家店铺的 ' . $period . ' 数据。',
                'empty' => '该账期还没有导入顾家过账基础数据。',
                'fields' => $fields,
            ],
            'rows' => $rows,
            'filters' => $filters,
            'periods' => $periods,
            'statuses' => $statuses,
            'stores' => $stores,
            'import' => $importData,
            'summary' => [
                'filtered_rows' => $rows->total(),
                'rows' => (int) ($importData['row_count'] ?? 0),
                'stores' => (int) ($importData['store_count'] ?? 0),
                'orders' => (int) ($importData['order_count'] ?? 0),
                'completed_at' => $importData['completed_at'] ?? null,
            ],
            'error' => $error,
        ];
    }
}