import { core, store, RegisterExtensionPoint, StoreService, DataService, PluginService } from "@janhq/core";

/**
 * Create a collection on data store
 *
 * @param     name     name of the collection to create
 * @param     schema   schema of the collection to create, include fields and their types
 * @returns   Promise<void>
 *
 */
function createCollection({ name, schema }: { name: string; schema?: { [key: string]: any } }): Promise<void> {
  return core.invokePluginFunc(MODULE_PATH, "createCollection", name, schema);
}

/**
 * Delete a collection
 *
 * @param     name     name of the collection to delete
 * @returns   Promise<void>
 *
 */
function deleteCollection(name: string): Promise<void> {
  return core.invokePluginFunc(MODULE_PATH, "deleteCollection", name);
}

/**
 * Insert a value to a collection
 *
 * @param     collectionName     name of the collection
 * @param     value              value to insert
 * @returns   Promise<any>
 *
 */
function insertOne({ collectionName, value }: { collectionName: string; value: any }): Promise<any> {
  return core.invokePluginFunc(MODULE_PATH, "insertOne", collectionName, value);
}

/**
 * Update value of a collection's record
 *
 * @param     collectionName     name of the collection
 * @param     key                key of the record to update
 * @param     value              value to update
 * @returns   Promise<void>
 *
 */
function updateOne({ collectionName, key, value }: { collectionName: string; key: string; value: any }): Promise<void> {
  return core.invokePluginFunc(MODULE_PATH, "updateOne", collectionName, key, value);
}

/**
 * Updates all records that match a selector in a collection in the data store.
 * @param       collectionName - The name of the collection containing the records to update.
 * @param       selector - The selector to use to get the records to update.
 * @param       value - The new value for the records.
 * @returns     {Promise<void>} A promise that resolves when the records are updated.
 */
function updateMany({
  collectionName,
  value,
  selector,
}: {
  collectionName: string;
  value: any;
  selector?: { [key: string]: any };
}): Promise<void> {
  return core.invokePluginFunc(MODULE_PATH, "updateMany", collectionName, value, selector);
}

/**
 * Delete a collection's record
 *
 * @param     collectionName     name of the collection
 * @param     key                key of the record to delete
 * @returns   Promise<void>
 *
 */
function deleteOne({ collectionName, key }: { collectionName: string; key: string }): Promise<void> {
  return core.invokePluginFunc(MODULE_PATH, "deleteOne", collectionName, key);
}

/**
 * Deletes all records with a matching key from a collection in the data store.
 *
 * @param     collectionName     name of the collection
 * @param     selector           selector to use to get the records to delete.
 * @returns   {Promise<void>}
 *
 */
function deleteMany({
  collectionName,
  selector,
}: {
  collectionName: string;
  selector?: { [key: string]: any };
}): Promise<void> {
  return core.invokePluginFunc(MODULE_PATH, "deleteMany", collectionName, selector);
}

/**
 * Retrieve a record from a collection in the data store.
 * @param {string} collectionName - The name of the collection containing the record to retrieve.
 * @param {string} key - The key of the record to retrieve.
 * @returns {Promise<any>} A promise that resolves when the record is retrieved.
 */
function findOne({ collectionName, key }: { collectionName: string; key: string }): Promise<any> {
  return core.invokePluginFunc(MODULE_PATH, "findOne", collectionName, key);
}

/**
 * Gets records in a collection in the data store using a selector.
 * @param {string} collectionName - The name of the collection containing the record to get the value from.
 * @param {{ [key: string]: any }} selector - The selector to use to get the value from the record.
 * @param {[{ [key: string]: any }]} sort - The sort options to use to retrieve records.
 * @returns {Promise<any>} A promise that resolves with the selected value.
 */
function findMany({
  collectionName,
  selector,
  sort,
}: {
  collectionName: string;
  selector: { [key: string]: any };
  sort?: [{ [key: string]: any }];
}): Promise<any> {
  return core.invokePluginFunc(MODULE_PATH, "findMany", collectionName, selector, sort);
}

function onStart() {
  createCollection({ name: "conversations", schema: {} });
  createCollection({ name: "messages", schema: {} });
}

// Register all the above functions and objects with the relevant extension points
export function init({ register }: { register: RegisterExtensionPoint }) {
  register(PluginService.OnStart, PLUGIN_NAME, onStart);
  register(StoreService.CreateCollection, createCollection.name, createCollection);
  register(StoreService.DeleteCollection, deleteCollection.name, deleteCollection);
  register(StoreService.InsertOne, insertOne.name, insertOne);
  register(StoreService.UpdateOne, updateOne.name, updateOne);
  register(StoreService.UpdateMany, updateMany.name, updateMany);
  register(StoreService.DeleteOne, deleteOne.name, deleteOne);
  register(StoreService.DeleteMany, deleteMany.name, deleteMany);
  register(StoreService.FindOne, findOne.name, findOne);
  register(StoreService.FindMany, findMany.name, findMany);

  register(DataService.GetConversations, getConversations.name, getConversations);
  register(DataService.CreateConversation, createConversation.name, createConversation);
  register(DataService.UpdateConversation, updateConversation.name, updateConversation);
  register(DataService.UpdateMessage, updateMessage.name, updateMessage);
  register(DataService.DeleteConversation, deleteConversation.name, deleteConversation);
  register(DataService.CreateMessage, createMessage.name, createMessage);
  register(DataService.GetConversationMessages, getConversationMessages.name, getConversationMessages);
}

function getConversations(): Promise<any> {
  return store.findMany("conversations", {}, [{ updatedAt: "desc" }]);
}

function createConversation(conversation: any): Promise<number | undefined> {
  return store.insertOne("conversations", conversation);
}

function updateConversation(conversation: any): Promise<void> {
  return store.updateOne("conversations", conversation._id, conversation);
}

function createMessage(message: any): Promise<number | undefined> {
  return store.insertOne("messages", message);
}

function updateMessage(message: any): Promise<void> {
  return store.updateOne("messages", message._id, message);
}

function deleteConversation(id: any) {
  return store.deleteOne("conversations", id).then(() => store.deleteMany("messages", { conversationId: id }));
}

function getConversationMessages(conversationId: any) {
  return store.findMany("messages", { conversationId }, [{ createdAt: "desc" }]);
}