<?php

declare(strict_types=1);

namespace app\adminapi\lists\qywx;

use app\adminapi\lists\BaseAdminDataLists;
use app\common\lists\ListsSearchInterface;
use app\common\model\auth\Admin;
use app\common\model\QywxExternalContact;
use app\common\model\QywxMsgArchive;
use app\common\model\QywxMsgArchiveMedia;

/**
 * 单会话消息历史
 *
 * 两种查询模式，二选一：
 *   1) session_id 传 QywxMsgSession.id（推荐）
 *   2) staff_userid + external_userid（单聊）/ roomid（群聊）
 *
 * 消息默认按 send_time 升序，便于前端从下往上追加。
 * 支持 before_time / after_time 游标翻页。
 */
class MsgArchiveLists extends BaseAdminDataLists implements ListsSearchInterface
{
    public function setSearch(): array
    {
        return [
            '=' => ['roomid', 'msgtype'],
        ];
    }

    private function resolveScope(): array
    {
        $sessionId = (int) ($this->params['session_id'] ?? 0);
        if ($sessionId > 0) {
            $session = \app\common\model\QywxMsgSession::find($sessionId);
            if ($session) {
                return [
                    'staff_userid' => (string) $session['staff_userid'],
                    'external_userid' => (string) $session['external_userid'],
                    'roomid' => (string) $session['roomid'],
                ];
            }
        }

        return [
            'staff_userid' => trim((string) ($this->params['staff_userid'] ?? '')),
            'external_userid' => trim((string) ($this->params['external_userid'] ?? '')),
            'roomid' => trim((string) ($this->params['roomid'] ?? '')),
        ];
    }

    private function baseQuery()
    {
        $scope = $this->resolveScope();
        $query = QywxMsgArchive::where($this->searchWhere);

        if ($scope['roomid'] !== '') {
            $query->where('roomid', $scope['roomid']);
        } else {
            // 单聊：两端顺序不定，from_user/tolist 都可能为员工或客户
            $staff = $scope['staff_userid'];
            $external = $scope['external_userid'];
            if ($staff === '' && $external === '') {
                $query->where('id', 0);
            } else {
                $query->where('roomid', '');
                if ($staff !== '' && $external !== '') {
                    $query->where(function ($q) use ($staff, $external) {
                        $q->where(function ($sub) use ($staff, $external) {
                            $sub->where('from_user', $staff)->whereLike('to_list', '%"' . $external . '"%');
                        })->whereOr(function ($sub) use ($staff, $external) {
                            $sub->where('from_user', $external)->whereLike('to_list', '%"' . $staff . '"%');
                        });
                    });
                } elseif ($staff !== '') {
                    $query->where(function ($q) use ($staff) {
                        $q->where('from_user', $staff)->whereOr('to_list', 'like', '%"' . $staff . '"%');
                    });
                } else {
                    $query->where(function ($q) use ($external) {
                        $q->where('from_user', $external)->whereOr('to_list', 'like', '%"' . $external . '"%');
                    });
                }
            }
        }

        if (!empty($this->params['before_time'])) {
            $query->where('send_time', '<', (int) $this->params['before_time']);
        }
        if (!empty($this->params['after_time'])) {
            $query->where('send_time', '>', (int) $this->params['after_time']);
        }

        return $query;
    }

    public function lists(): array
    {
        $rows = $this->baseQuery()
            ->order('send_time', 'desc')
            ->order('id', 'desc')
            ->limit($this->limitOffset, $this->limitLength)
            ->select()
            ->toArray();

        if (empty($rows)) {
            return [];
        }

        $rows = array_reverse($rows); // 前端按时间升序渲染

        $users = [];
        foreach ($rows as $r) {
            $users[$r['from_user']] = true;
            $toList = $r['to_list'];
            if (is_array($toList)) {
                foreach ($toList as $to) {
                    $users[$to] = true;
                }
            }
        }
        $users = array_keys(array_filter($users, fn ($_, $k) => $k !== '', ARRAY_FILTER_USE_BOTH));

        $adminMap = [];
        $extMap = [];
        if ($users) {
            $adminMap = Admin::whereIn('work_wechat_userid', $users)
                ->column('id,name,avatar,work_wechat_userid', 'work_wechat_userid');
            $extMap = QywxExternalContact::whereIn('external_userid', $users)
                ->column('external_userid,name,avatar,type,unionid', 'external_userid');
        }

        $msgIds = array_column($rows, 'msgid');
        $mediaMap = [];
        if ($msgIds) {
            $mediaList = QywxMsgArchiveMedia::whereIn('msgid', $msgIds)->select()->toArray();
            foreach ($mediaList as $m) {
                $mediaMap[$m['msgid']][] = $m;
            }
        }

        foreach ($rows as &$r) {
            $fromId = (string) $r['from_user'];
            $r['from_is_staff'] = isset($adminMap[$fromId]);
            $r['from_profile'] = $adminMap[$fromId] ?? ($extMap[$fromId] ?? null);
            $r['media'] = $mediaMap[$r['msgid']] ?? [];
        }
        unset($r);

        return $rows;
    }

    public function count(): int
    {
        return $this->baseQuery()->count();
    }
}