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import { HttpError } from "@lib/error-handling/http-error";
import { populate } from "dotenv";
import { AnyKeys, Document, FilterQuery, Model } from "mongoose";
export const CrudService = <ModelDoc extends Document>(
model: Model<ModelDoc>
) => {
return class CrudServiceClass {
protected model: Model<ModelDoc> = model;
async create(data: AnyKeys<ModelDoc>): Promise<ModelDoc> {
return this.model.create(data);
}
async update(
filter: FilterQuery<ModelDoc>,
data: AnyKeys<ModelDoc>
): Promise<ModelDoc> {
return this.model.findOneAndUpdate(filter, data, { new: true });
}
async delete(filter: FilterQuery<ModelDoc>): Promise<ModelDoc> {
return this.model.findOneAndDelete(filter);
}
async list(
filter: FilterQuery<ModelDoc>,
paginationOptions: {
limit?: number;
skip?: number;
} = {
limit: 10,
skip: 0,
},
options?: {
populateObject: any
}
): Promise<{
docs: ModelDoc[];
paginationData: {
total: number;
page: number;
perPage: number;
};
}> {
const queryInstruction = this.model
.find(filter)
.limit(paginationOptions.limit)
.skip(paginationOptions.skip)
if (options?.populateObject) queryInstruction.populate(options.populateObject);
const docs = await queryInstruction
const total = await this.model.countDocuments(filter);
const paginationData = {
total: total,
page: paginationOptions.skip,
perPage: paginationOptions.limit,
};
return { docs, paginationData };
}
async findOne(filter: FilterQuery<ModelDoc>): Promise<ModelDoc | null> {
return this.model.findOne(filter);
}
async findOneOrFail(filter: FilterQuery<ModelDoc>): Promise<ModelDoc> {
const document = await this.findOne(filter);
if (!document) throw new HttpError(404, "No Matching Result Found.");
return document;
}
};
};
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