/** Copyright Stewart Allen <sa@grid.space> -- All Rights Reserved */

"use strict";

// Future imports for src/kiri-run/engine.js when unwrapped from gapp.register()

// Dependencies from dep: comments
// import { moto_license } from 'moto/license.js';
// import { load_stl } from 'load/stl.js';
// import { kiri_conf } from 'kiri/conf.js';
// import { kiri_client } from 'kiri/client.js';
// import { kiri_widget } from 'kiri/widget.js';

// Dependencies from use: comments
// import { add_three } from 'add/three.js';
// import { add_array } from 'add/array.js';

// Core dependencies from root
import { kiri } from '../../main/gapp.js';

// Note: This module also depends on:
// - moto.license (for licensing functionality)
// - load.stl (for STL file loading)
// - kiri.conf (for configuration)
// - kiri.client (for client functionality)
// - kiri.widget (for widget functionality)
// - add.three (for Three.js utilities)
// - add.array (for array utilities)
// - Various kiri API functions injected via root

class Engine {
    constructor() {
        this.widget = kiri.newWidget();
        this.settings = {
            mode: "FDM",
            controller: {},
            render: false,
            filter: { FDM: "internal" },
            device: kiri.conf.defaults.fdm.d, // device profile
            process: kiri.conf.defaults.fdm.p, // slicing settings
            widget: { [ this.widget.id ]: {} }
        };
        this.listener = () => {};
    }

    load(url) {
        return new Promise((accept, reject) => {
            try {
                new load.STL().load(url, vertices => {
                    this.listener({loaded: url, vertices});
                    this.widget.loadVertices(vertices).center();
                    accept(this);
                });
            } catch (error) {
                reject(error);
            }
        });
    }

    clear() {
        kiri.api.platform.clear();
    }

    parse(data) {
        return new Promise((accept, reject) => {
            try {
                let vertices = new load.STL().parse(data);
                this.listener({parsed: data, vertices});
                this.widget.loadVertices(vertices).center();
                accept(this);
            } catch (error) {
                reject(error);
            }
        });
    }

    setListener(listener) {
        this.listener = listener;
        return this;
    }

    setRender(bool) {
        this.settings.render = bool;
        return this;
    }

    /**
     * Sets the mode of the engine. Valid modes are:
     * @param {"FDM"|"CAM"|"LASER"|"SLA"} mode - the mode to set
     * @returns {Engine} this
     */
    setMode(mode) {
        this.settings.mode = mode;
        return this;
    }

    setDevice(device) {
        Object.assign(this.settings.device, device);
        return this;
    }

    setProcess(process) {
        Object.assign(this.settings.process, process);
        return this;
    }

    setController(controller) {
        let ctrl = this.settings.controller;
        Object.assign(ctrl, controller);
        if (ctrl.threaded) {
            kiri.client.pool.start();
        } else {
            kiri.client.pool.stop();
        }
        return this;
    }

    setTools(tools) {
        this.settings.tools = tools;
        return this;
    }

    setStock(stock) {
        let { settings } = this;
        let { process } = settings;
        settings.stock = stock;
        process.camStockX = stock.x;
        process.camStockY = stock.y;
        process.camStockZ = stock.z;
        return this;
    }

    setOrigin(x, y, z) {
        this.settings.origin = { x, y, z };
        return this;
    }

    moveTo(x, y, z) {
        this.widget.move(x, y, z, true);
        return this;
    }

    move(x, y, z) {
        this.widget.move(x, y, z);
        return this;
    }

    scale(x, y, z) {
        this.widget.scale(x, y, z);
        return this;
    }

    rotate(x, y, z) {
        this.widget.rotate(x, y, z);
        return this;
    }

    slice() {
        return new Promise((accept, reject) => {
            kiri.client.clear();
            kiri.client.sync([ this.widget ]);
            kiri.client.rotate(this.settings);
            kiri.client.slice(this.settings, this.widget, msg => {
                this.listener({slice:msg});
                if (msg.error) {
                    reject(msg.error);
                }
                if (msg.done) {
                    accept(this);
                }
            });
        });
    }

    prepare() {
        return new Promise((accept, reject) => {
            kiri.client.prepare(this.settings, update => {
                this.listener({prepare:{update}});
            }, done => {
                this.listener({prepare:{done:true}});
                accept(this);
            });
        });
    }

    export() {
        return new Promise((accept, reject) => {
            let output = [];
            kiri.client.export(this.settings, segment => {
                if (typeof segment === 'string') {
                    this.listener({export:{segment}});
                    output.push(segment);
                }
            }, done => {
                this.listener({export:{done}});
                accept(output.join('\r\n'));
            });
        });
    }
}

function newEngine() {
    return new Engine();
}

gapp.overlay(kiri, {
    newEngine
});

// Future exports for src/kiri-run/engine.js when unwrapped from gapp.register()

// Main Engine class
export { Engine };

// Factory function
export { newEngine };

// Default export - the main engine functionality
export default {
    Engine,
    newEngine
};