<?php

namespace app\admin\controller;

use app\common\controller\Backend;
use app\common\library\ProcuremenStatus;
use think\Db;

/**
 * 协助采购 — 历史存证档案查询（已完结工序 + 操作记录详情）
 *
 * @icon fa fa-archive
 */
class Procuremenarchive extends Backend
{
    protected $searchFields = 'CCYDH,CYJMC,CGYMC';

    /** purchase_order.status 为已完结（兼容 varchar / 数字 / 首尾空格） */
    protected function applyPurchaseOrderCompletedWhere($query): void
    {
        $query->whereRaw(ProcuremenStatus::sqlPoCompleted('status'));
    }

    public function index()
    {
        $this->relationSearch = false;
        $this->request->filter(['strip_tags', 'trim']);
        if ($this->request->isAjax()) {
            list($where, $sort, $order, $offset, $limit) = $this->buildparams();
            $limit = max(10, min(500, (int)$limit));
            $offset = max(0, (int)$offset);

            $applyFilters = function ($query) use ($where) {
                $this->applyPurchaseOrderCompletedWhere($query);
                if (!empty($where)) {
                    $query->where($where);
                }
            };

            $sortField = preg_match('/^[a-zA-Z0-9_]+$/', (string)$sort) ? $sort : 'id';
            $orderDir = strtoupper((string)$order) === 'ASC' ? 'ASC' : 'DESC';
            $listQuery = Db::table('purchase_order');
            $applyFilters($listQuery);
            $rows = $listQuery
                ->field('id,scydgy_id,CCYDH,CYJMC,CGYMC,createtime,dStamp')
                ->order($sortField, $orderDir)
                ->select();
            if (!is_array($rows)) {
                $rows = [];
            }

            $out = [];
            foreach ($rows as $r) {
                if (!is_array($r)) {
                    continue;
                }
                $sid = (int)($r['scydgy_id'] ?? 0);
                $doneText = '';
                $ct = $r['createtime'] ?? null;
                $ctNum = 0;
                if (is_numeric($ct) && (int)$ct > 946684800) {
                    $ctNum = (int)$ct;
                    $doneText = date('Y-m-d H:i:s', $ctNum);
                } elseif (is_string($ct) && trim($ct) !== '' && stripos(trim($ct), '0000-00-00') !== 0) {
                    $doneText = trim($ct);
                    $ctNum = (int)strtotime($doneText);
                } elseif (!empty($r['dStamp']) && stripos((string)$r['dStamp'], '0000-00-00') !== 0) {
                    $doneText = trim((string)$r['dStamp']);
                    $ctNum = (int)strtotime($doneText);
                }
                $out[] = [
                    'id'              => (int)($r['id'] ?? 0),
                    'scydgy_id'       => $sid,
                    'CCYDH'           => trim((string)($r['CCYDH'] ?? '')),
                    'CYJMC'           => trim((string)($r['CYJMC'] ?? '')),
                    'CGYMC'           => trim((string)($r['CGYMC'] ?? '')),
                    'createtime'      => $ctNum > 0 ? $ctNum : (is_numeric($ct) ? (int)$ct : $ct),
                    'createtime_text' => $doneText,
                ];
            }

            $merged = $this->collapseArchiveRowsByOrder($out);
            $nMerged = count($merged);
            if ($nMerged > 1 && $sortField === 'id') {
                usort($merged, function ($a, $b) use ($orderDir) {
                    $cmp = ((int)($a['id'] ?? 0)) <=> ((int)($b['id'] ?? 0));
                    if ($cmp === 0) {
                        return strcmp((string)($a['CCYDH'] ?? ''), (string)($b['CCYDH'] ?? ''));
                    }

                    return $orderDir === 'ASC' ? $cmp : -$cmp;
                });
            } elseif ($nMerged > 1 && $sortField === 'createtime') {
                usort($merged, function ($a, $b) use ($orderDir) {
                    $ta = (int)($a['createtime'] ?? 0);
                    $tb = (int)($b['createtime'] ?? 0);
                    if ($ta === $tb) {
                        return ((int)($b['id'] ?? 0)) <=> ((int)($a['id'] ?? 0));
                    }

                    return $orderDir === 'ASC' ? ($ta <=> $tb) : ($tb <=> $ta);
                });
            }

            $pageRows = array_slice($merged, $offset, $limit);

            return json(['total' => $nMerged, 'rows' => $pageRows]);
        }

        return $this->view->fetch();
    }

    /**
     * 历史存证：同一订单号 CCYDH 合并为一行（与审批/确认列表一致）
     *
     * @param array<int, array<string, mixed>> $rows
     * @return array<int, array<string, mixed>>
     */
    protected function collapseArchiveRowsByOrder(array $rows): array
    {
        if ($rows === []) {
            return [];
        }
        $groups = [];
        foreach ($rows as $row) {
            if (!is_array($row)) {
                continue;
            }
            $dh = trim((string)($row['CCYDH'] ?? ''));
            $key = $dh !== '' ? $dh : ('_id_' . (int)($row['id'] ?? 0));
            if (!isset($groups[$key])) {
                $groups[$key] = [];
            }
            $groups[$key][] = $row;
        }
        $out = [];
        foreach ($groups as $groupRows) {
            if ($groupRows === []) {
                continue;
            }
            usort($groupRows, function ($a, $b) {
                return ((int)($a['id'] ?? 0)) <=> ((int)($b['id'] ?? 0));
            });
            $head = $groupRows[0];
            $gymcList = [];
            foreach ($groupRows as $r) {
                $g = trim((string)($r['CGYMC'] ?? ''));
                if ($g !== '' && !in_array($g, $gymcList, true)) {
                    $gymcList[] = $g;
                }
            }
            $merged = $head;
            if (count($groupRows) > 1) {
                $merged['CGYMC'] = implode('、', $gymcList);
            }
            $merged['process_count'] = count($groupRows);
            $latestTs = 0;
            $latestText = '';
            foreach ($groupRows as $r) {
                $ts = (int)($r['createtime'] ?? 0);
                if ($ts <= 0 && !empty($r['createtime_text'])) {
                    $ts = (int)strtotime((string)$r['createtime_text']);
                }
                if ($ts > $latestTs) {
                    $latestTs = $ts;
                    $latestText = trim((string)($r['createtime_text'] ?? ''));
                }
            }
            if ($latestTs > 0) {
                $merged['createtime'] = $latestTs;
                if ($latestText === '') {
                    $latestText = date('Y-m-d H:i:s', $latestTs);
                }
                $merged['createtime_text'] = $latestText;
            }
            $maxId = (int)($head['id'] ?? 0);
            foreach ($groupRows as $r) {
                $maxId = max($maxId, (int)($r['id'] ?? 0));
            }
            $merged['id'] = $maxId;
            $out[] = $merged;
        }

        return $out;
    }
}