import { Parse } from 'parse/node';
import * as triggers from '../triggers';

function isParseObjectConstructor(object) {
  return (
    typeof object === 'function' &&
    Object.prototype.hasOwnProperty.call(object, 'className')
  );
}

function getClassName(parseClass) {
  if (parseClass && parseClass.className) {
    return parseClass.className;
  }
  return parseClass;
}

/** @namespace
 * @name Parse
 * @description The Parse SDK.
 *  see [api docs](https://docs.parseplatform.org/js/api) and [guide](https://docs.parseplatform.org/js/guide)
 */

/** @namespace
 * @name Parse.Cloud
 * @memberof Parse
 * @description The Parse Cloud Code SDK.
 */

var ParseCloud = {};
/**
 * Defines a Cloud Function.
 *
 * **Available in Cloud Code only.**

 * @static
 * @memberof Parse.Cloud
 * @param {String} name The name of the Cloud Function
 * @param {Function} data The Cloud Function to register. This function can be an async function and should take one parameter a {@link Parse.Cloud.FunctionRequest}.
 */
ParseCloud.define = function(functionName, handler, validationHandler) {
  triggers.addFunction(
    functionName,
    handler,
    validationHandler,
    Parse.applicationId
  );
};

/**
 * Defines a Background Job.
 *
 * **Available in Cloud Code only.**
 *
 * @method job
 * @name Parse.Cloud.job
 * @param {String} name The name of the Background Job
 * @param {Function} func The Background Job to register. This function can be async should take a single parameters a {@link Parse.Cloud.JobRequest}
 *
 */
ParseCloud.job = function(functionName, handler) {
  triggers.addJob(functionName, handler, Parse.applicationId);
};

/**
 *
 * Registers a before save function.
 *
 * **Available in Cloud Code only.**
 *
 * If you want to use beforeSave for a predefined class in the Parse JavaScript SDK (e.g. {@link Parse.User}), you should pass the class itself and not the String for arg1.
 *
 * ```
 * Parse.Cloud.beforeSave('MyCustomClass', (request) => {
 *   // code here
 * })
 *
 * Parse.Cloud.beforeSave(Parse.User, (request) => {
 *   // code here
 * })
 * ```
 *
 * @method beforeSave
 * @name Parse.Cloud.beforeSave
 * @param {(String|Parse.Object)} arg1 The Parse.Object subclass to register the after save function for. This can instead be a String that is the className of the subclass.
 * @param {Function} func The function to run before a save. This function can be async and should take one parameter a {@link Parse.Cloud.TriggerRequest};
 */
ParseCloud.beforeSave = function(parseClass, handler) {
  var className = getClassName(parseClass);
  triggers.addTrigger(
    triggers.Types.beforeSave,
    className,
    handler,
    Parse.applicationId
  );
};

/**
 * Registers a before delete function.
 *
 * **Available in Cloud Code only.**
 *
 * If you want to use beforeDelete for a predefined class in the Parse JavaScript SDK (e.g. {@link Parse.User}), you should pass the class itself and not the String for arg1.
 * ```
 * Parse.Cloud.beforeDelete('MyCustomClass', (request) => {
 *   // code here
 * })
 *
 * Parse.Cloud.beforeDelete(Parse.User, (request) => {
 *   // code here
 * })
 *```
 *
 * @method beforeDelete
 * @name Parse.Cloud.beforeDelete
 * @param {(String|Parse.Object)} arg1 The Parse.Object subclass to register the before delete function for. This can instead be a String that is the className of the subclass.
 * @param {Function} func The function to run before a delete. This function can be async and should take one parameter, a {@link Parse.Cloud.TriggerRequest}.
 */
ParseCloud.beforeDelete = function(parseClass, handler) {
  var className = getClassName(parseClass);
  triggers.addTrigger(
    triggers.Types.beforeDelete,
    className,
    handler,
    Parse.applicationId
  );
};

/**
 *
 * Registers the before login function.
 *
 * **Available in Cloud Code only.**
 *
 * This function provides further control
 * in validating a login attempt. Specifically,
 * it is triggered after a user enters
 * correct credentials (or other valid authData),
 * but prior to a session being generated.
 *
 * ```
 * Parse.Cloud.beforeLogin((request) => {
 *   // code here
 * })
 *
 * ```
 *
 * @method beforeLogin
 * @name Parse.Cloud.beforeLogin
 * @param {Function} func The function to run before a login. This function can be async and should take one parameter a {@link Parse.Cloud.TriggerRequest};
 */
ParseCloud.beforeLogin = function(handler) {
  let className = '_User';
  if (typeof handler === 'string' || isParseObjectConstructor(handler)) {
    // validation will occur downstream, this is to maintain internal
    // code consistency with the other hook types.
    className = getClassName(handler);
    handler = arguments[1];
  }
  triggers.addTrigger(
    triggers.Types.beforeLogin,
    className,
    handler,
    Parse.applicationId
  );
};

/**
 * Registers an after save function.
 *
 * **Available in Cloud Code only.**
 *
 * If you want to use afterSave for a predefined class in the Parse JavaScript SDK (e.g. {@link Parse.User}), you should pass the class itself and not the String for arg1.
 *
 * ```
 * Parse.Cloud.afterSave('MyCustomClass', async function(request) {
 *   // code here
 * })
 *
 * Parse.Cloud.afterSave(Parse.User, async function(request) {
 *   // code here
 * })
 * ```
 *
 * @method afterSave
 * @name Parse.Cloud.afterSave
 * @param {(String|Parse.Object)} arg1 The Parse.Object subclass to register the after save function for. This can instead be a String that is the className of the subclass.
 * @param {Function} func The function to run after a save. This function can be an async function and should take just one parameter, {@link Parse.Cloud.TriggerRequest}.
 */
ParseCloud.afterSave = function(parseClass, handler) {
  var className = getClassName(parseClass);
  triggers.addTrigger(
    triggers.Types.afterSave,
    className,
    handler,
    Parse.applicationId
  );
};

/**
 * Registers an after delete function.
 *
 * **Available in Cloud Code only.**
 *
 * If you want to use afterDelete for a predefined class in the Parse JavaScript SDK (e.g. {@link Parse.User}), you should pass the class itself and not the String for arg1.
 * ```
 * Parse.Cloud.afterDelete('MyCustomClass', async (request) => {
 *   // code here
 * })
 *
 * Parse.Cloud.afterDelete(Parse.User, async (request) => {
 *   // code here
 * })
 *```
 *
 * @method afterDelete
 * @name Parse.Cloud.afterDelete
 * @param {(String|Parse.Object)} arg1 The Parse.Object subclass to register the after delete function for. This can instead be a String that is the className of the subclass.
 * @param {Function} func The function to run after a delete. This function can be async and should take just one parameter, {@link Parse.Cloud.TriggerRequest}.
 */
ParseCloud.afterDelete = function(parseClass, handler) {
  var className = getClassName(parseClass);
  triggers.addTrigger(
    triggers.Types.afterDelete,
    className,
    handler,
    Parse.applicationId
  );
};

/**
 * Registers a before find function.
 *
 * **Available in Cloud Code only.**
 *
 * If you want to use beforeFind for a predefined class in the Parse JavaScript SDK (e.g. {@link Parse.User}), you should pass the class itself and not the String for arg1.
 * ```
 * Parse.Cloud.beforeFind('MyCustomClass', async (request) => {
 *   // code here
 * })
 *
 * Parse.Cloud.beforeFind(Parse.User, async (request) => {
 *   // code here
 * })
 *```
 *
 * @method beforeFind
 * @name Parse.Cloud.beforeFind
 * @param {(String|Parse.Object)} arg1 The Parse.Object subclass to register the before find function for. This can instead be a String that is the className of the subclass.
 * @param {Function} func The function to run before a find. This function can be async and should take just one parameter, {@link Parse.Cloud.BeforeFindRequest}.
 */
ParseCloud.beforeFind = function(parseClass, handler) {
  var className = getClassName(parseClass);
  triggers.addTrigger(
    triggers.Types.beforeFind,
    className,
    handler,
    Parse.applicationId
  );
};

/**
 * Registers an after find function.
 *
 * **Available in Cloud Code only.**
 *
 * If you want to use afterFind for a predefined class in the Parse JavaScript SDK (e.g. {@link Parse.User}), you should pass the class itself and not the String for arg1.
 * ```
 * Parse.Cloud.afterFind('MyCustomClass', async (request) => {
 *   // code here
 * })
 *
 * Parse.Cloud.afterFind(Parse.User, async (request) => {
 *   // code here
 * })
 *```
 *
 * @method afterFind
 * @name Parse.Cloud.afterFind
 * @param {(String|Parse.Object)} arg1 The Parse.Object subclass to register the after find function for. This can instead be a String that is the className of the subclass.
 * @param {Function} func The function to run before a find. This function can be async and should take just one parameter, {@link Parse.Cloud.AfterFindRequest}.
 */
ParseCloud.afterFind = function(parseClass, handler) {
  const className = getClassName(parseClass);
  triggers.addTrigger(
    triggers.Types.afterFind,
    className,
    handler,
    Parse.applicationId
  );
};

ParseCloud.onLiveQueryEvent = function(handler) {
  triggers.addLiveQueryEventHandler(handler, Parse.applicationId);
};

ParseCloud._removeAllHooks = () => {
  triggers._unregisterAll();
};

ParseCloud.useMasterKey = () => {
  // eslint-disable-next-line
  console.warn(
    'Parse.Cloud.useMasterKey is deprecated (and has no effect anymore) on parse-server, please refer to the cloud code migration notes: http://docs.parseplatform.org/parse-server/guide/#master-key-must-be-passed-explicitly'
  );
};

ParseCloud.httpRequest = require('./httpRequest');

module.exports = ParseCloud;

/**
 * @interface Parse.Cloud.TriggerRequest
 * @property {String} installationId If set, the installationId triggering the request.
 * @property {Boolean} master If true, means the master key was used.
 * @property {Parse.User} user If set, the user that made the request.
 * @property {Parse.Object} object The object triggering the hook.
 * @property {String} ip The IP address of the client making the request.
 * @property {Object} headers The original HTTP headers for the request.
 * @property {String} triggerName The name of the trigger (`beforeSave`, `afterSave`, ...)
 * @property {Object} log The current logger inside Parse Server.
 * @property {Parse.Object} original If set, the object, as currently stored.
 */

/**
 * @interface Parse.Cloud.BeforeFindRequest
 * @property {String} installationId If set, the installationId triggering the request.
 * @property {Boolean} master If true, means the master key was used.
 * @property {Parse.User} user If set, the user that made the request.
 * @property {Parse.Query} query The query triggering the hook.
 * @property {String} ip The IP address of the client making the request.
 * @property {Object} headers The original HTTP headers for the request.
 * @property {String} triggerName The name of the trigger (`beforeSave`, `afterSave`, ...)
 * @property {Object} log The current logger inside Parse Server.
 * @property {Boolean} isGet wether the query a `get` or a `find`
 */

/**
 * @interface Parse.Cloud.AfterFindRequest
 * @property {String} installationId If set, the installationId triggering the request.
 * @property {Boolean} master If true, means the master key was used.
 * @property {Parse.User} user If set, the user that made the request.
 * @property {Parse.Query} query The query triggering the hook.
 * @property {Array<Parse.Object>} results The results the query yielded.
 * @property {String} ip The IP address of the client making the request.
 * @property {Object} headers The original HTTP headers for the request.
 * @property {String} triggerName The name of the trigger (`beforeSave`, `afterSave`, ...)
 * @property {Object} log The current logger inside Parse Server.
 */

/**
 * @interface Parse.Cloud.FunctionRequest
 * @property {String} installationId If set, the installationId triggering the request.
 * @property {Boolean} master If true, means the master key was used.
 * @property {Parse.User} user If set, the user that made the request.
 * @property {Object} params The params passed to the cloud function.
 */

/**
 * @interface Parse.Cloud.JobRequest
 * @property {Object} params The params passed to the background job.
 * @property {function} message If message is called with a string argument, will update the current message to be stored in the job status.
 */