"use strict";

import {Event} from "../Application/Event.ecma.js";
import {Common} from "../Utils/Common.ecma.js";

/**
 * @class AIChatMessageModel
 * @constructor
 * @param {!AIChatConversationModel} conversation
 * @param {!(Object.<string, any|null>|Array.<any|null>)} inputs 
 * @return {void}
 * @access public
 * @static
 */
export const AIChatMessageModel = (function(){

    /**
     * @constructs AIChatMessageModel
     * @param {!AIChatConversationModel} conversation 
     * @param {!(Object.<string, any|null>|Array.<any|null>)} inputs 
     * @return {void}
     * @access private
     * @static
     */
    const AIChatMessageModel = function(conversation, inputs){
        /** @type {AIChatConversationModel} */
        this.conversation = conversation;
        /** @type {string} */
        this.status = Common.get_value("status", inputs, "unloaded");
        /** @type {string|null} */
        this.id = Common.get_value("id", inputs);
        /** @type {string} */
        this.role = Common.get_value("role", inputs, "unknown");
        /** @type {boolean} */
        this.ok = Common.get_value("ok", inputs, false);
        /** @type {boolean} */
        this.done = Common.get_value("done", inputs, false);
        /** @type {string} */
        this.message = (Common.get_value("message", inputs, ""));
        /** @type {number} */
        this.tokens = Common.get_value("tokens", inputs, 0);
        /** @type {number} */
        this.date_from = Common.get_value("date_from", inputs, Date.now());
        /** @type {number} */
        this.date_to = Common.get_value("date_to", inputs, Date.now());
    };

    return AIChatMessageModel;
})();

/**
 * @class AIChatConversationModel
 * @constructor
 * @param {!AIChatModel} chat
 * @param {!(Object.<string, any|null>|Array.<any|null>)} inputs 
 * @return {void}
 * @access public
 * @static
 */
export const AIChatConversationModel = (function(){

    /**
     * @constructs AIChatConversationModel
     * @param {!AIChatModel} chat 
     * @param {!(Object.<string, any|null>|Array.<any|null>)} inputs 
     * @return {void}
     * @access private
     * @static
     */
    const AIChatConversationModel = function(chat, inputs){
        /** @type {AIChatModel} */
        this.chat = chat;
        /** @type {string} */
        this.id = Common.get_value("id", inputs);
        /** @type {Array.<AIChatMessageModel>} */
        this.messages = Common.get_value("messages", inputs, []).map(message => new AIChatMessageModel(this, message));
        /** @type {boolean} */
        this.selected = Common.get_value("selected", inputs, true);
    };

    return AIChatConversationModel;
})();

/**
 * @class AIChatModel
 * @constructor
 * @return {void}
 * @access private
 * @static
 */
export const AIChatModel = (function(){

    /**
     * @constructs AIChatModel
     * @return {void}
     * @access private
     * @static
     */
    const AIChatModel = function(){

        /** @type {AIChatModel} */
        const self = this;

        /** @type {Array.<AIChatConversationModel>} */
        this.conversations = [];
        /** @type {AIChatConversationModel|null} */
        this.selected_conversation = null;

        /** @type {Event} */
        this.on_change = new Event();

        /**
         * @returns {void}
         * @access private
         */
        const constructor = () => {

            self.on_change.add(update_changes);

        };

        /**
         * @param {!AIChatMessageModel} model 
         * @returns {void}
         * @access private
         */
        const update_changes = model => {

            /** @type {HTMLElement|null} */
            const message = document.querySelector(".aichat [data-conversation='" + model.conversation.id + "'] .aichat-message[data-id='" + model.id + "']");

        };

        /**
         * @param {!string} conversation 
         * @param {!string} id 
         * @returns {AIChatMessageModel|null}
         * @access private
         */
        const get_message = (conversation, id) => {

            /** @type {AIChatConversationModel|null} */
            const conversation_model = self.conversations.find(model => model.id === conversation);

            if(conversation_model)
                return conversation_model.messages.find(model => model.id === id) || null;
            return null;
        };

        /**
         * @param {!string} message 
         * @param {!boolean} [done = false] 
         * @returns {boolean}
         * @access public
         */
        this.update = (conversation, id, message, done = false) => {

            /** @type {AIChatMessageModel|null} */
            let model = get_message(conversation, id);

            if(!model)
                return false;

            model.message += message;
            model.tokens ++;
            model.done = done;
            conversation_model.chat.on_change.execute(model);

            return true;
        };

        /**
         * @param {!string} status 
         * @returns {boolean}
         * @access public
         */
        this.set_status = status => {

            /** @type {AIChatMessageModel|null} */
            let model = get_message(conversation, id);

            if(!model)
                return false;

            model.status = status;
            conversation_model.chat.on_change.execute(model);

            return true;
        };

        constructor();

    };

    return AIChatModel;
})();