import _ from 'lodash';

import { ObjectType } from 'type-graphql';
import { classToPlain, Exclude, plainToClassFromExist } from 'class-transformer';

import { Collection, ObjectId } from 'mongodb';
import DB from '@seed/services/database/DBService';

import { Permission } from '@seed/interfaces/permission';
import { ApolloContext } from '@seed/interfaces/context';

import { IEngineSchema, MetaBy } from './EngineSchema';

import { GetArgs } from '@seed/graphql/Request';

import {
    bulk,
    deleteOne,
    getAll,
    getCount,
    getMany,
    getOne,
    getQuery,
    saveMany,
    saveOne,
    updateOne,
    updateOneCustom,
    updateOneSubField,
} from './utils/crud.utils';
import { getCountGeneric, getManyGeneric, getManyGenericWithArgs, getOneGeneric } from './utils/service.utils';

import {
    BulkInput,
    DeleteOneInput,
    GetAllInput,
    GetCountInput,
    GetManyInput,
    GetOneInput,
    GetQueryInput,
    SaveManyInput,
    SaveOneInput,
    UpdateOneCustomInput,
    UpdateOneInput,
    UpdateOneSubField,
} from './utils/__interface';
import { EnginePathComponent } from '@seed/interfaces/components';
import { ModelCollectionEnum } from '@src/__indexes/__collections';
import { nullToUndefined } from '@seed/helpers/Utils';

@ObjectType()
export abstract class EngineModel<SchemaDBInterface, SchemaDB, Schema> implements IEngineSchema {
    @Exclude()
    public collectionName: ModelCollectionEnum | string;
    @Exclude()
    public permissions: Permission;

    @Exclude()
    defaultSort: string;

    dbData: SchemaDB;

    searchT?: string;

    _id: string;
    organisationId?: string | undefined;
    paths?: EnginePathComponent[];
    by?: MetaBy | undefined;
    createdAt: Date;
    updatedAt: Date;

    tagsIds?: string[];

    public constructor(init: {
        collectionName: ModelCollectionEnum | string;
        permissions: Permission;
        dataInit: SchemaDB & Partial<IEngineSchema>;
        defaultSort?: string;
    }) {
        this.collectionName = init.collectionName;
        this.permissions = init.permissions;

        this.dbData = init.dataInit;

        this.permissions = {
            c: init.permissions.c,
            r: init.permissions.r,
            w: init.permissions.w,
            d: init.permissions.d,
        };

        this.createdAt = new Date();
        this.updatedAt = new Date();

        this.defaultSort = init.defaultSort || 'createdAt desc';
    }

    /*
     *
     * Model functions
     *
     */

    public get(): Schema {
        const data: any = this.dbData;

        if (this._id) data._id = this._id;
        if (this.permissions) data.permissions = this.permissions;

        if (this.organisationId) data.organisationId = this.organisationId;
        if (this.by) data.by = this.by;

        if (this.createdAt) data.createdAt = this.createdAt;
        if (this.updatedAt) data.updatedAt = this.updatedAt;

        return this.plainToClass(data) as Schema;
    }

    public set(doc: any): void {
        const newData = {
            ...classToPlain(this.dbData), // Get old data
            ...doc, // Replace with new data
        };

        this.dbData = _.assign(this.dbData, newData);

        if (doc._id) this._id = doc._id;

        if (doc.permissions) {
            this.permissions = {
                c: _.uniq(_.concat(doc.permissions.c)),
                r: _.uniq(_.concat(doc.permissions.r)),
                w: _.uniq(_.concat(doc.permissions.w)),
                d: _.uniq(_.concat(doc.permissions.d)),
            };
        }

        if (doc.organisationId) this.organisationId = doc.organisationId;

        if (doc.paths) this.paths = doc.paths;

        if (doc.createdAt) this.createdAt = doc.createdAt;
        if (doc.updatedAt) this.updatedAt = doc.updatedAt;
    }

    async beforeCreate?(ctx?: ApolloContext | null): Promise<void>;
    async beforeUpdate?(ctx?: ApolloContext | null): Promise<void>;
    async beforeDelete?(ctx?: ApolloContext | null): Promise<void>;

    async afterCreate?(changeStream: any): Promise<void>;
    async afterUpdate?(changeStream: any): Promise<void>;
    async afterDelete?(changeStream: any): Promise<void>;

    /*
     *
     * Search Functions & Helpers
     *
     */

    searchEngine?(): any;
    searchText?(): any;
    /*
     *
     * Transform Functions
     *
     */

    abstract plainToClass(plain: any): Schema | Schema[];

    /*
     *
     * DB Functions
     *
     */

    public async db(): Promise<Collection<SchemaDBInterface & IEngineSchema>> {
        return await (await DB.getInstance()).db.collection<SchemaDBInterface & IEngineSchema>(this.collectionName);
    }

    generatePaths?(): EnginePathComponent[];

    public getPaths(): EnginePathComponent[] {
        return this.generatePaths ? this.generatePaths() : this.paths ? this.paths : [];
    }

    public getFullPath(): EnginePathComponent[] {
        const myPath = this.getPaths();
        myPath.push({
            ressourceModel: this.collectionName,
            ressourceId: this._id,
        });

        return myPath;
    }

    // ██████╗ ██╗   ██╗███████╗██████╗ ██╗   ██╗
    // ██╔═══██╗██║   ██║██╔════╝██╔══██╗╚██╗ ██╔╝
    // ██║   ██║██║   ██║█████╗  ██████╔╝ ╚████╔╝
    // ██║▄▄ ██║██║   ██║██╔══╝  ██╔══██╗  ╚██╔╝
    // ╚██████╔╝╚██████╔╝███████╗██║  ██║   ██║
    //  ╚══▀▀═╝  ╚═════╝ ╚══════╝╚═╝  ╚═╝   ╚═╝

    public async getQuery(input: GetQueryInput<SchemaDBInterface>): Promise<any> {
        return getQuery(this, input);
    }
    public async getMany(input: GetManyInput<SchemaDBInterface>): Promise<Schema[]> {
        return getMany(this, input);
    }
    public async getCount(input: GetCountInput<SchemaDBInterface>): Promise<number> {
        return getCount(this, input);
    }
    public async getAll(input: GetAllInput<SchemaDBInterface>): Promise<Schema[]> {
        return getAll(this, input);
    }
    public async getOne(input: GetOneInput<SchemaDBInterface>): Promise<Schema> {
        let newInput;

        if (!input.query) {
            newInput = { query: input };
        } else newInput = input;

        return getOne(this, newInput);
    }

    // ███╗   ███╗██╗   ██╗████████╗ █████╗ ████████╗██╗ ██████╗ ███╗   ██╗
    // ████╗ ████║██║   ██║╚══██╔══╝██╔══██╗╚══██╔══╝██║██╔═══██╗████╗  ██║
    // ██╔████╔██║██║   ██║   ██║   ███████║   ██║   ██║██║   ██║██╔██╗ ██║
    // ██║╚██╔╝██║██║   ██║   ██║   ██╔══██║   ██║   ██║██║   ██║██║╚██╗██║
    // ██║ ╚═╝ ██║╚██████╔╝   ██║   ██║  ██║   ██║   ██║╚██████╔╝██║ ╚████║
    // ╚═╝     ╚═╝ ╚═════╝    ╚═╝   ╚═╝  ╚═╝   ╚═╝   ╚═╝ ╚═════╝ ╚═╝  ╚═══╝

    public async saveOne(input: SaveOneInput<SchemaDBInterface>): Promise<Schema> {
        return saveOne(this, input);
    }
    public async updateOne(input: UpdateOneInput<SchemaDBInterface>): Promise<Schema> {
        return updateOne(this, input);
    }
    public async updateOneCustom(input: UpdateOneCustomInput<SchemaDBInterface>): Promise<Schema> {
        return updateOneCustom(this, input);
    }
    public async updateOneSubField(input: UpdateOneSubField<SchemaDBInterface>): Promise<Schema> {
        return updateOneSubField(this, input);
    }

    public async deleteOne(input: DeleteOneInput<SchemaDBInterface>): Promise<Schema> {
        return deleteOne(this, input);
    }

    public async saveMany(input: SaveManyInput<SchemaDBInterface>): Promise<Schema[]> {
        return saveMany(this, input);
    }

    public async bulk(input: BulkInput<SchemaDBInterface, SchemaDB, Schema>): Promise<void> {
        return bulk(this, input);
    }

    // ██████╗ ███████╗███╗   ██╗███████╗██████╗ ██╗ ██████╗███████╗
    // ██╔════╝ ██╔════╝████╗  ██║██╔════╝██╔══██╗██║██╔════╝██╔════╝
    // ██║  ███╗█████╗  ██╔██╗ ██║█████╗  ██████╔╝██║██║     ███████╗
    // ██║   ██║██╔══╝  ██║╚██╗██║██╔══╝  ██╔══██╗██║██║     ╚════██║
    // ╚██████╔╝███████╗██║ ╚████║███████╗██║  ██║██║╚██████╗███████║
    //  ╚═════╝ ╚══════╝╚═╝  ╚═══╝╚══════╝╚═╝  ╚═╝╚═╝ ╚═════╝╚══════

    public async getOneGeneric(id: string, ctx: ApolloContext): Promise<Schema> {
        return getOneGeneric(this, id, ctx);
    }
    public async getManyGeneric(query: any, pagination: GetArgs | undefined, ctx: ApolloContext | null): Promise<Schema[]> {
        return getManyGeneric(this, query, pagination, ctx);
    }

    public async getCountGeneric(baseArguments: any, ctx: ApolloContext): Promise<number> {
        return getCountGeneric(this, baseArguments, ctx);
    }

    public async getManyGenericWithArgs(baseArguments: any, ctx: ApolloContext | null): Promise<Schema[]> {
        return getManyGenericWithArgs(this, baseArguments, ctx);
    }
}