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/*
* BSD 3-Clause License
*
* Copyright (c) 2020, Mapcreator
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import ResourceBase from '../resources/base/ResourceBase';
import { hasTrait, isParentOf } from '../utils/reflection';
import Trait from './Trait';
/**
* Adds the possibility to inject proxies/methods
*
* @mixin
*/
export default class Injectable extends Trait {
/**
* Inject proxies and methods during the constructor
*/
initializer () {
const injectable = this.constructor._injectable || {};
for (const name of Object.keys(injectable)) {
const { value, isProxy } = injectable[name];
if (isProxy) {
this.injectProxy(name, value);
} else {
this.inject(name, value);
}
}
}
/**
* Inject a proxy property into future instances
*
* @param {string|object} name - Name of the property
* @param {function?} value - Either a resource or a function that returns a proxy
*
* @example
*
* Mapcreator.injectProxy({Domain});
*
* // After creating new api instance
*
* api.domains // returns proxy
*/
static injectProxy (name, value) {
if (value) {
if (typeof this._injectable === 'undefined') {
this._injectable = {};
}
this._injectable[name] = { value, isProxy: true };
} else {
// Handle vue-style injections `.inject({ Foo, Bar, Baz })`
for (const key of Object.keys(name)) {
this.inject(key, name[key]);
}
}
}
/**
* Inject a property into future instances
*
* @param {string|object} name - Name of the property
* @param {function?} value - Any function that does not return a proxy
*
*/
static inject (name, value) {
if (value) {
if (typeof this._injectable === 'undefined') {
this._injectable = {};
}
this._injectable[name] = { value, isProxy: false };
} else {
// Handle vue-style injections `.inject({ Foo, Bar, Baz })`
for (const key of Object.keys(name)) {
this.inject(key, name[key]);
}
}
}
/**
* Prevent a property from being injected
* @param {string} name - Name of the property
*/
static uninject (name) {
if (typeof this._injectable !== 'undefined') {
delete this._injectable[name];
}
}
/**
* Inject a proxy
* @param {string} name - Name of the property
* @param {function?} value - Either a resource or a function that returns a proxy
*/
injectProxy (name, value) {
if (!value) {
// Handle vue-style injections `.inject({ Foo, Bar, Baz })`
for (const key of Object.keys(name)) {
this.injectProxy(key, name[key]);
}
} else if (isParentOf(ResourceBase, value)) {
this._injectProxy(name, value);
} else {
this._inject(name, value);
}
}
/**
* Inject a property into the instance
*
* @param {string|object} name - Name of the property
* @param {function?} value - Any function that does not return a proxy
*
*/
inject (name, value) {
this._inject(name, value, false);
}
/**
* Revert a proxy injection in instance, won't delete non-injected properties
*
* @param {string} name - property name
* @throws Error when the property was not injected
*/
uninject (name) {
const descriptor = Object.getOwnPropertyDescriptor(this, name);
const value = descriptor.value || descriptor.get || {};
if (!value.injected) {
throw new Error(`Property "${name}" was not injected, can't un-inject`);
}
if (value.original) {
Object.defineProperty(this, name, value.original);
} else {
Object.defineProperty(this, name, {
// eslint-disable-next-line no-undefined
value: undefined,
enumerable: false,
writable: true,
});
}
}
_injectProxy (name, value) {
if (name === value.name) {
name = `${name.replace(/^\w/, c => c.toLowerCase())}s`;
}
const OwnableResource = require('./OwnableResource').default;
if (hasTrait(value, OwnableResource)) {
const OwnedResourceProxy = require('../proxy/OwnedResourceProxy').default;
this._inject(name, function () {
return new OwnedResourceProxy(this.api, this, value);
});
} else if (isParentOf(ResourceBase, value) && this._proxyResourceList) {
// returns a SimpleResourceProxy
this._inject(name, function () {
return this._proxyResourceList(value);
});
} else {
const ResourceProxy = require('../proxy/ResourceProxy').default;
this._inject(name, function () {
return new ResourceProxy(this, value);
});
}
}
_inject (name, value, getter = true) {
const func = (...args) => value.apply(this, args);
const original = Object.getOwnPropertyDescriptor(this, name);
func.injected = true;
// Store the original property descriptor if available
if (original) {
func.original = original;
}
Object.defineProperty(this, name, {
enumerable: false,
configurable: true,
[getter ? 'get' : 'value']: func,
});
}
}