import { project } from "./project.js";
import { element } from "./element.js";
import { elements_list } from "./elements_list.js";
import { submission } from "./submission.js";
import { submissions_list } from "./submissions_list.js";
import { parser } from "./parser.js";

class database {
    #project;
    #submissions;

    constructor(content) {
        if (!(content instanceof Object)) {
            throw "Content to into database from must be an object.";
        }

        this.#load(content);
    }

    #load(content) {
        const loader = new parser(content, "root");
        const project = loader.get_parser("project");
        const submissions = loader.get_parser("submissions");

        this.#project = this.#parse_project(project);
        this.#submissions = this.#parse_submissions(submissions);
    }

    #parse_project(content) {
        const name = content.get("name");
        let description = "";

        if (content.exists("description")) {
            description = content.get("description");
        }

        return new project(name, description);
    }

    #parse_elements(content) {
        const list = new elements_list();

        content.properties.forEach(name => {
            const loader = content.get_parser(name);

            const result = new element(
                name
            );

            list.append(result);
        });

        return list;
    }

    #parse_submissions(content) {
        const list = new submissions_list();

        content.properties.forEach(title => {
            const loader = content.get_parser(title);
            const description = loader.get("description");
            const picture = loader.get("picture");
            const elements_parser = loader.get_parser("elements");
            const elements = this.#parse_elements(elements_parser);

            const result = new submission(
                title,
                description,
                picture,
                elements
            );

            list.append(result);
        });

        return list;
    }

    get project() {
        return this.#project;
    }
}

export { database };