import { EducationType } from "@/education/education.types";
import { DocumentBuilder } from "@nestjs/swagger";
import { RedocOptions } from "@juicyllama/nestjs-redoc";
import educationDataset from "@/education/education.dataset";

const formatEducation = (education: EducationType) => {
    const period = `${formatDate(education.startDate)} - ${
        education.endDate ? formatDate(education.endDate) : "present"
    }`;
    const institute = education.url
        ? `<a target="_blank" href="${education.url}">${education.institute}</a>`
        : education.institute;
    const description = education.description.split("\n").join("</p><p>");

    return `<header><strong>${institute}</strong>, <em>${education.city}</em><br/>
<strong>${education.level}</strong> - ${education.course}<br/>
<time>${period}</time></header>
<p>${description}</p>`;
};

const formatDate = (date: Date, locale: string | string[] = "en-GB"): string => {
    const dateFormatter = new Intl.DateTimeFormat(locale, {
        dateStyle: "long",
    });
    const dateParts = dateFormatter.formatToParts(date).reduce<Record<"day" | "month" | "year", string>>(
        (result, datePart: Intl.DateTimeFormatPart) => {
            if (datePart.type !== "literal") {
                result[datePart.type] = datePart.value;
            }

            return result;
        },
        { day: "", month: "", year: "" }
    );

    return `${dateParts.month} ${dateParts.year}`;
};

export const addEducation = (
    document: DocumentBuilder,
    count: number = 5,
    redocOptions: RedocOptions
): DocumentBuilder => {
    let educationTagGroup = redocOptions.tagGroups.find((tagGroup) => tagGroup.name === "Education");
    if (!educationTagGroup) {
        educationTagGroup = {
            name: "Education",
            tags: [],
        };
        redocOptions.tagGroups.push(educationTagGroup);
    }

    educationDataset
        .getData()
        .slice(0, count)
        .forEach((education) => {
            educationTagGroup.tags.push(education.institute);
            document.addTag(education.institute, formatEducation(education));
        });

    educationTagGroup.tags.push("Education");
    document.addTag("Education", "For my complete education, take a look at the GetEducation API endpoint.");

    return document;
};