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import { Injectable } from '@nestjs/common'; |
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import { IRoleRbac } from './interfaces/role.rbac.interface'; |
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import { IFilterPermission } from '../permissions/interfaces/filter.permission.interface'; |
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import { IParamsFilter } from '../params-filter/interfaces/params.filter.interface'; |
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@Injectable() |
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export class RoleRbac implements IRoleRbac { |
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constructor( |
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private readonly role: string, |
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private readonly grant: string[], |
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private readonly filters: object, |
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private readonly paramsFilter?: IParamsFilter, |
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) { |
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} |
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canAsync(...permissions: string[]): Promise<boolean> { |
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return this.checkPermissions<Promise<boolean>>(permissions, 'canAsync'); |
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} |
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can(...permissions: string[]): boolean { |
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return this.checkPermissions<boolean>(permissions, 'can'); |
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} |
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any(...permissions: string[][]): boolean { |
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// loop through the list of permission list |
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return ( |
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permissions |
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.map(permission => { |
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// check each of the permission list |
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return this.can(...permission); |
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}) |
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// any permission list is true, then return true as result |
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.some(result => result) |
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); |
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} |
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async anyAsync(...permissions: string[][]): Promise<boolean> { |
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return ( |
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await Promise.all( |
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permissions.map(permission => { |
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return this.canAsync(...permission); |
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}), |
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) |
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).some(result => result); |
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} |
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private checkPermissions<T>(permissions, methodName): T { |
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if (!permissions.length) { |
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return false as any; |
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} |
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// check grant |
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for (const permission of permissions) { |
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if (!this.grant.includes(permission)) { |
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return false as any; |
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} |
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} |
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// check custom filter |
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for (const permission of permissions) { |
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// check particular permission [permission@action] |
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if (this.grant.includes(permission) && permission.includes('@')) { |
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const filter: string = permission.split('@')[1]; |
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const filterService: IFilterPermission = this.filters[filter]; |
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if (filterService) { |
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return ( |
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filterService?.[methodName]?.( |
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this.paramsFilter ? this.paramsFilter.getParam(filter) : null, |
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) ?? true |
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); |
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} |
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} |
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// check particular permission [permission] |
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if (this.grant.includes(permission) && !permission.includes('@')) { |
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for (const filter in this.filters) { |
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if ( |
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this.filters.hasOwnProperty(filter) && |
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this.grant.includes(`${permission}@${filter}`) |
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) { |
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return ( |
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this.filters[filter]?.[methodName]?.( |
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this.paramsFilter ? this.paramsFilter.getParam(filter) : null, |
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) ?? true |
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); |
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} |
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} |
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} |
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} |
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return true as any; |
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} |
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} |
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sergey-telpuk /
nestjs-rbac
