<%#
 Copyright 2013-2018 the original author or authors from the JHipster project.

 This file is part of the JHipster project, see https://www.jhipster.tech/
 for more information.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-%>
export interface GuinessCompatibleSpy extends jasmine.Spy {
    /** By chaining the spy with and.returnValue, all calls to the function will return a specific
     * value. */
    andReturn(val: any): void;
    /** By chaining the spy with and.callFake, all calls to the spy will delegate to the supplied
     * function. */
    andCallFake(fn: Function): GuinessCompatibleSpy;
    /** removes all recorded calls */
    reset();
}

export class SpyObject {
    static stub(object = null, config = null, overrides = null) {
        if (!(object instanceof SpyObject)) {
            overrides = config;
            config = object;
            object = new SpyObject();
        }

        const m = {};
        Object.keys(config).forEach((key) => m[key] = config[key]);
        Object.keys(overrides).forEach((key) => m[key] = overrides[key]);
        Object.keys(m).forEach((key) => {
            object.spy(key).andReturn(m[key]);
        });
        return object;
    }

    constructor(type = null) {
        if (type) {
            Object.keys(type.prototype).forEach((prop) => {
                let m = null;
                try {
                    m = type.prototype[prop];
                } catch (e) {
                    // As we are creating spys for abstract classes,
                    // these classes might have getters that throw when they are accessed.
                    // As we are only auto creating spys for methods, this
                    // should not matter.
                }
                if (typeof m === 'function') {
                    this.spy(prop);
                }
            });
        }
    }

    spy(name) {
        if (!this[name]) {
            this[name] = this._createGuinnessCompatibleSpy(name);
        }
        return this[name];
    }

    prop(name, value) {
        this[name] = value;
    }

    /** @internal */
    _createGuinnessCompatibleSpy(name): GuinessCompatibleSpy {
        const newSpy: GuinessCompatibleSpy = < any > jasmine.createSpy(name);
        newSpy.andCallFake = < any > newSpy.and.callFake;
        newSpy.andReturn = < any > newSpy.and.returnValue;
        newSpy.reset = < any > newSpy.calls.reset;
        // revisit return null here (previously needed for rtts_assert).
        newSpy.and.returnValue(null);
        return newSpy;
    }
}