import { Injectable } from "@nestjs/common";
import { EducationDto, EducationType } from "@/education/education.types";
import { education } from "@/education/education";

@Injectable()
export class EducationService {
    private readonly education: readonly EducationDto[];

    constructor() {
        this.education = EducationDto.asDto(education).sort((educationA, educationB) =>
            educationA.startDate < educationB.startDate ? 1 : -1
        );
    }

    getMany(filter?: Partial<Omit<EducationType, "startDate" | "endDate">>) {
        const filtersValues = Object.entries(filter ?? {}).map(([key, filterValue]) => [
            key,
            new RegExp(filterValue, "i"),
        ]) as Array<[keyof Omit<EducationType, "startDate" | "endDate">, RegExp]>;
        if (!filter || filtersValues.length === 0) {
            return this.education;
        }

        return this.education.filter((education) =>
            filtersValues.some(([key, filterValue]) => filterValue.test(education[key]))
        );
    }
}