mbroersen / jeloquent

import HasMany from "./Model/Relation/HasMany";

import BelongsTo from "./Model/Relation/BelongTo";

import MorphOne from "./Model/Relation/MorphOne";

import HasOne from "./Model/Relation/HasOne";

import HasOneThrough from "./Model/Relation/HasOneThrough";

import MorphTo from "./Model/Field/MorphTo";

import Field from "./Model/Field";

import Relation from "./Model/Relation";

import ForeignKey from "./Model/Field/ForeignKey";

import Index from "./Table/Index";

import {ModelInterface, ModelStaticInterface} from "../JeloquentInterfaces";

import Collection from "./Collection";

import * as Str from "../Util/Str";

import * as Obj from "../Util/Obj";

import * as ModelSetup from "./Model/Util/Setup";

import Table from "./Table";

class Model implements ModelInterface {

    private static kebabCaseName: string;

    private static snakeCaseName: string;

    _tmpId: string;

    ['constructor']: ModelStaticInterface;

    private _originalFields: Map<string, Field>;

    private _primaryFields: Field[];

    private numberOfFields: number;

    constructor(fields: Field[] = []) {

        this.setFields(ModelSetup.addRelationFieldsToList(fields));

        this._tmpId = `_${++globalThis.Store.numberOfModelCreated}`;

        return ModelSetup.modelProxy(this);

    }

    static get className(): string {

        return this.name;

    }

    static get kebabCaseClassName(): string {

        return this.kebabCaseName ??= Str.KebabCase(this.className);

    }

    static get snakeCaseClassName(): string {

        return this.snakeCaseName ??= Str.SnakeCase(this.className);

    }

    get className(): string {

        return this.constructor.className;

    }

    get dirtyFieldNames(): string[] {

        return this.dirtyFields.map(field => field.name);

    }

    get dirtyFields(): Field[] {

        return this.originalFields.filter(field => field.isDirty);

    }

    get kebabCaseClassName(): string {

        return this.constructor.kebabCaseClassName;

    }

    get originalFields(): Field[] {

        return [...this._originalFields.values()];

    }

    get originalPrimaryKey(): unknown {

        return this.primaryFields.reduce((toValue, field, i) => {

            if (i > 0) {

                return `${toValue}-${field.originalValue}`;

            }

            return field.originalValue;

        }, '') ?? this._tmpId ?? null;

    }

    get originalValues(): object {

        return this.originalFields.reduce((originalValues, field) => {

            if (field.originalValue !== undefined) {

                originalValues[field.name] = field.originalValue;

            }

            return originalValues;

        }, {});

    }

    get primaryFields(): Field[] {

        return this._primaryFields ??= this.originalFields.filter(field => field.isPrimary);

    }

    get primaryKey(): string {

        return (this.primaryFields.reduce((toValue:string, field:Field, i:number): string => {

            if (i > 0) {

                return `${toValue}-${field.value}`;

            }

            if (field.value === null) {

                return field.value;

            }

            return `${field.value}`;

        }, '') ?? this._tmpId ?? null);

    }

    get primaryKeyName(): string[] {

        return this.originalFields.filter(field => field.isPrimary).map(field => field.name);

    }

    get snakeCaseClassName(): string {

        return this.constructor.snakeCaseClassName;

    }

    static aSyncInsert(data: object): Promise<Collection> {

        return new Promise((resolve) => {

            queueMicrotask(() => {

                resolve(this.insert(data));

            });

        });

    }

    static aSyncUpdate(data: object): Promise<Collection> {

        return new Promise((resolve) => {

            queueMicrotask(() => {

                resolve(this.update(data));

            });

        });

    }

    static all(): Collection {

        return globalThis.Store.database().all(this.className);

    }

    static delete(id): void {

        globalThis.Store.database().delete(this.className, id);

    }

    static find(id): unknown {

        return globalThis.Store.database().find(this.className, id);

    }

    static getInstance(): ModelInterface {

        const original = globalThis.Store.classInstances[this.className] ?? (globalThis.Store.classInstances[this.className] = new this())

        const fieldsClone = original.originalFields.reduce((obj, field) => {

            obj.push(Object.assign(Object.create(Object.getPrototypeOf(field)), field));

            return obj;

        }, [])

        return ModelSetup.modelProxy(Object.create(Object.getPrototypeOf(original)).setFields(fieldsClone));

    }

    static ids() {

        return globalThis

            .Store

            .database()

            .ids(this.className);

    }

    static insert(data: object|object[]): Collection {

        const modelsData = Array.isArray(data) ? data : [data];

        const length = modelsData.length;

        const models = new Collection();

        for (let i = 0; i < length; i++) {

            const modelData = modelsData[i];

            const model = this.getInstance();

            model.fill(modelData);

            globalThis.Store.database().insert(this.className, model);

            model.fillRelations(modelData);

            models.push(model);

        }

        return models;

    }

    static registerIndex(name: string): void {

        Index.register(this.getInstance(), name);

    }

    static update(data: object|object[]): Collection {

        const modelsData = Array.isArray(data) ? data : [data];

        const length = modelsData.length;

        const models = new Collection();

        for (let i = 0; i < length; i++) {

            const model = this.getInstance();

            model.fill(data);

            globalThis.Store.database().update(this.className, model);

            model.fillRelations(data);

            models.push(model);

        }

        return models;

    }

    delete() {

        this.constructor.delete(this.primaryKey);

    }

    fill(data) {

        for (let i = 0; i < this.numberOfFields; i++) {

            if (!(this.originalFields[i] instanceof Relation)) {

                const fieldName = this.originalFields[i].name;

                if (data[fieldName] !== undefined) {

                    this[`_${fieldName}`] = data[fieldName];

                }

            }

        }

    }

    fillRelations(data: object): void {

        // insert through relations after model insert;

        for (let i = 0; i < this.numberOfFields; i++) {

            if ((this.originalFields[i] instanceof Relation)) {

                const fieldName = this.originalFields[i].name;

                if (data[fieldName] !== undefined) {

                    this[`_${fieldName}`] = data[fieldName];

                }

            }

        }

    }

    isDirty(fieldName:string = null) {

        if (fieldName) {

            return this.dirtyFieldNames.includes(fieldName);

        }

        return this.dirtyFields.length > 0;

    }

    registerIndex(name) {

        Index.register(this, name);

    }

    resetDirty() {

        this.originalFields.filter((field) => !(field instanceof Relation)).forEach(field => {

            field.resetDirty();

        })

    }

    save() {

        globalThis.Store.database().save(this.className, this);

    }

    setFields(fields: Field[]) {

        this._originalFields = new Map();

        ModelSetup.setFields(this, fields);

        return this;

    }

    tableSetup(table: Table) {

        ModelSetup.setupTable(this, table);

    }

    toJSON(): object {

        return this.toObject();

    }

    toObject(fromRelation = false): object {

        return Obj.fromModel(this, fromRelation);

    }

}

export {

    Model,

    Field,

    Relation,

    BelongsTo,

    HasOne,

    HasOneThrough,

    HasMany,

    HasManyThrough,

    MorphOne,

    MorphTo,

    ForeignKey,