<?php

declare(strict_types=1);

namespace app\adminapi\lists\pharmacy;

use app\adminapi\lists\BaseAdminDataLists;
use app\common\lists\ListsSearchInterface;
use think\facade\Db;

class MedicineMappingLists extends BaseAdminDataLists implements ListsSearchInterface
{
    public function setSearch(): array
    {
        return [];
    }

    public function lists(): array
    {
        $rows = $this->query()
            ->field($this->fields())
            ->limit($this->limitOffset, $this->limitLength)
            ->order('l.id', 'desc')
            ->select()
            ->toArray();
        foreach ($rows as &$row) {
            foreach ([
                'local_medicine_id', 'local_status', 'mapping_id', 'mapping_status',
                'operator_id', 'mapping_update_time', 'catalog_version', 'remote_status', 'remote_deleted',
            ] as $field) {
                if ($row[$field] !== null) {
                    $row[$field] = (int) $row[$field];
                }
            }
        }
        unset($row);
        return $rows;
    }

    public function count(): int
    {
        return (int) $this->query()->count('l.id');
    }

    private function query()
    {
        $query = Db::name('doctor_medicine')->alias('l')
            ->leftJoin(
                'ej_medicine_mapping m',
                'm.local_medicine_id = l.id AND m.status = 1 AND m.delete_time IS NULL'
            )
            ->leftJoin('ej_medicine_catalog c', 'c.medicine_code = m.medicine_code')
            ->whereNull('l.delete_time');

        $localName = trim((string) ($this->params['local_name'] ?? ''));
        if ($localName !== '') {
            $query->where('l.name', 'like', '%' . $localName . '%');
        }
        $remoteKeyword = trim((string) ($this->params['remote_keyword'] ?? ''));
        if ($remoteKeyword !== '') {
            $query->where(function ($nested) use ($remoteKeyword): void {
                $nested->where('c.name', 'like', '%' . $remoteKeyword . '%')
                    ->whereOr('c.medicine_code', 'like', '%' . $remoteKeyword . '%');
            });
        }

        $mappingStatus = trim((string) ($this->params['mapping_status'] ?? ''));
        if ($mappingStatus === 'mapped') {
            $query->whereNotNull('m.id')->where('c.status', 1)->where('c.remote_deleted', 0);
        } elseif ($mappingStatus === 'unmapped') {
            $query->whereNull('m.id');
        } elseif ($mappingStatus === 'invalid') {
            $query->whereNotNull('m.id')
                ->where(function ($nested): void {
                    $nested->whereNull('c.id')
                        ->whereOr('c.status', '<>', 1)
                        ->whereOr('c.remote_deleted', 1);
                });
        }

        return $query;
    }

    private function fields(): string
    {
        return implode(',', [
            'l.id AS local_medicine_id',
            'l.name AS local_name',
            'l.unit AS local_unit',
            'l.status AS local_status',
            'm.id AS mapping_id',
            'm.medicine_code',
            'm.operator_id',
            'm.operator_name',
            'm.update_time AS mapping_update_time',
            'c.name AS remote_name',
            'c.brand AS remote_brand',
            'c.unit AS remote_unit',
            'c.settlement_price',
            'c.retail_price',
            'c.catalog_version',
            'c.status AS remote_status',
            'c.remote_deleted',
            "CASE WHEN m.id IS NULL THEN 0 "
                . "WHEN c.id IS NULL OR c.status <> 1 OR c.remote_deleted = 1 THEN 2 ELSE 1 END AS mapping_status",
        ]);
    }
}