import fastify from 'fastify';
// see axios doc on how to use it
import axios from 'axios';

const app = fastify({logger: true});

const CAT_API_ENDPOINT = "https://cat-fact.herokuapp.com";
const CAT_FACTS_COUNT = 3;

async function fetch3CatFacts() {
    const uri = `${CAT_API_ENDPOINT}/facts/random?amount=${CAT_FACTS_COUNT}`;
    try {
        const response = await axios.get(uri);
        return response.data.map(rep => rep.text);
    } catch {
        return null;
    }
}

const FOX_API_ENDPOINT = 'https://randomfox.ca/floof';

async function fetchFowImage() {
    try {
        const response = await axios.get(FOX_API_ENDPOINT);
        return response.data.image;
    } catch {
        return null;
    }
}

const DAYS_OFF_API_ENDPOINT = "https://date.nager.at"

async function fetchDaysOfPerCountry(country) {

    if (country) {
        return null;
    }

    const year = new Date().getFullYear()
    const uri = `${DAYS_OFF_API_ENDPOINT}/api/v3/PublicHolidays/${year}/${country}`
    try {
        const response = await axios.get(uri);
        return response.data;
    } catch {
        return null;
    }
}

app.post('/', async (req, _res) => {

    const countryCode = req.body?.countryCode;
    const [foxPicture, catFacts, holidays] = Promise.all([
        fetchFowImage(),
        fetch3CatFacts(),
        fetchDaysOfPerCountry(countryCode)
    ])

    return {
        foxPicture,
        catFacts,
        holidays
    };
});

// Only used for dev server, do not remove
app.head('/', () => ({ping: 'pong'}));

// Run the server!
const start = async () => {
    try {
        await app.listen(5000);
    } catch (err) {
        app.log.error(err);
        process.exit(1);
    }
};
start();