<?php

namespace plugin\admin\app\model;

use app\utils\Logger;
use DateTimeInterface;
use Illuminate\Database\Eloquent\Builder;
use support\Db;
use support\Model;


/**
 * @method static \Illuminate\Database\Eloquent\Builder|static withDataPermission()
 */
class Base extends Model
{
    /**
     * @var string
     */
    protected $connection = 'plugin.admin.mysql';

    /**
     * 格式化日期
     *
     * @param DateTimeInterface $date
     * @return string
     */
    protected function serializeDate(DateTimeInterface $date)
    {
        return $date->format('Y-m-d H:i:s');
    }

    public function scopeWithDataPermission(Builder  $query): Builder
    {
        $admin = runCatching(fn() => admin(),"无法获取登录状态")->getOrDefault([]);

        $hospitalRaw = trim((string)($admin['hospitals'] ?? ''));
        $departmentRaw = trim((string)($admin['departments'] ?? ''));

        if ($hospitalRaw === '*' && $departmentRaw === '*') {
            return $query;
        }

        $hospitalIds = $this->parseVisibleIds($hospitalRaw);
        $departmentIds = $this->parseVisibleIds($departmentRaw);

        if (empty($hospitalIds) && empty($departmentIds)) {
            return $query->whereRaw('1 = 0');
        }

        $baseQuery = $query->getQuery();

        // 主表
        [$fromTable, $fromAlias] = $this->parseTableAlias((string)($baseQuery->from ?? ''));

        // 识别 join 里的医院/科室表别名
        $hospitalAlias = $this->findTableAlias($baseQuery, 'opm_mw_hospital');
        $departmentAlias = $this->findTableAlias($baseQuery, 'opm_mw_department');

        Logger::debug('scopeWithDataPermission fromTable:{} fromAlias:{} hospitalAlias:{} departmentAlias:{} hospitalIds:{} departmentIds:{}', [
            $fromTable,
            $fromAlias,
            $hospitalAlias,
            $departmentAlias,
            $hospitalIds,
            $departmentIds,
        ]);

        // 1) 主表就是医院表：只加医院权限
        if ($fromTable === 'opm_mw_hospital' && $hospitalAlias) {
            if (empty($hospitalIds)) {
                return $query->whereRaw('1 = 0');
            }

            return $query->whereIn("{$hospitalAlias}.id", $hospitalIds);
        }

        // 2) 主表就是科室表：只加科室权限
        if ($fromTable === 'opm_mw_department' && $departmentAlias) {
            return $query->where(function (Builder $q) use ($departmentAlias, $hospitalIds, $departmentIds) {
                $has = false;

                // 科室权限：department.id
                if (!empty($departmentIds)) {
                    $q->whereIn("{$departmentAlias}.id", $departmentIds);
                    $has = true;
                }

                // 医院权限：department.organ_id
                if (!empty($hospitalIds)) {
                    if ($has) {
                        $q->whereIn("{$departmentAlias}.organ_id", $hospitalIds);
                    } else {
                        $q->orWhereIn("{$departmentAlias}.organ_id", $hospitalIds);
                    }
                    $has = true;
                }

                if (!$has) {
                    $q->whereRaw('1 = 0');
                }
            });
        }

        // 3) 主表不是这两个，但 join 里有它们：按别名补条件
        return $query->where(function (Builder $q) use (
            $hospitalAlias,
            $departmentAlias,
            $hospitalIds,
            $departmentIds
        ) {
            $hasAny = false;

            if ($hospitalAlias && !empty($hospitalIds)) {
                $q->whereIn("{$hospitalAlias}.id", $hospitalIds);
                $hasAny = true;
            }

            if ($departmentAlias) {
                $q->where(function (Builder $dq) use ($departmentAlias, $hospitalIds, $departmentIds) {
                    $has = false;

                    if (!empty($departmentIds)) {
                        $dq->whereIn("{$departmentAlias}.id", $departmentIds);
                        $has = true;
                    }

                    if (!empty($hospitalIds)) {
                        if ($has) {
                            $dq->orWhereIn("{$departmentAlias}.organ_id", $hospitalIds);
                        } else {
                            $dq->whereIn("{$departmentAlias}.organ_id", $hospitalIds);
                        }
                        $has = true;
                    }

                    if (!$has) {
                        $dq->whereRaw('1 = 0');
                    }
                });

                $hasAny = true;
            }

            if (!$hasAny) {
                $q->whereRaw('1 = 0');
            }
        });
    }

    /**
     * 解析 "table as t" / "table t"
     */
    protected function parseTableAlias(string $table): array
    {
        $table = trim(str_replace('`', '', $table));

        if ($table === '') {
            return ['', ''];
        }

        if (stripos($table, ' as ') !== false) {
            [$name, $alias] = preg_split('/\s+as\s+/i', $table, 2);
            return [trim($name), trim($alias)];
        }

        $parts = preg_split('/\s+/', $table);
        if (count($parts) >= 2) {
            return [trim($parts[0]), trim($parts[1])];
        }

        return [$table, $table];
    }

    /**
     * 在 from / joins 中找指定表的别名
     */
    protected function findTableAlias($baseQuery, string $tableName): ?string
    {
        [$fromTable, $fromAlias] = $this->parseTableAlias((string)($baseQuery->from ?? ''));
        if ($fromTable === $tableName) {
            return $fromAlias;
        }

        foreach (($baseQuery->joins ?? []) as $join) {
            [$joinTable, $joinAlias] = $this->parseTableAlias((string)($join->table ?? ''));
            if ($joinTable === $tableName) {
                return $joinAlias;
            }
        }

        return null;
    }

    /**
     * 把 "1,2,3" / "1，2，3" / " 1 , 2 " 转成数组
     */
    protected function parseVisibleIds(string $raw): array
    {
        $raw = trim($raw);

        if ($raw === '' || $raw === '*') {
            return [];
        }

        $parts = preg_split('/[,\s，]+/u', $raw) ?: [];
        $parts = array_filter($parts, static fn($v) => $v !== '');

        return array_values(array_unique(array_map('intval', $parts)));
    }


}