import jwt from "jsonwebtoken";

import {Conlang, SearchDirection} from "./types";

const backendUrl = "https://kucinakobackend.ichigo.everydayimshuflin.com";

const getPassword = (): string | null => window.sessionStorage.getItem("password");

const setPassword = (password: string) => {
    window.sessionStorage.setItem("password", password);
};

const makeAuthorizationHeader = (key: string): string => {
    const unixTime = Date.now() / 1000;
    const token = jwt.sign({role: "conlang_postgrest_rw", exp: unixTime + 60}, key);
    return `Bearer ${token}`;
};

const updateEntry = (conlang: Conlang, id: number, english: string) => {
    const url = `${backendUrl}/${conlang.toString()}?id=eq.${id}`;

    const request = new Request(url, {
        method: "PATCH",
        headers: {
            Authorization: makeAuthorizationHeader(getPassword()),
            "Content-Type": "application/json",
        },
        body: JSON.stringify({
            eng: english,
        }),
    });

    fetch(request).then((resp) => console.log(resp));
};

function searchEntry(searchTerm: string, conlang: Conlang, direction: SearchDirection, jsonHandler: (json: Object) => void) {
    const specForConlang = {
        [Conlang.Saimiar]: "sai",
        [Conlang.Juteyuji]: "jut",
        [Conlang.Tukvaysi]: "tuk",
        [Conlang.Elesu]: "elesu",
    };

    const offset = 0;
    const limit = 20;

    const conlangDb = conlang.toString();
    const conlangSpec = specForConlang[conlang];
    const field = direction === SearchDirection.ToConlang ? "eng" : conlangSpec;

    const params = new URLSearchParams([
        [field, `like.*${searchTerm}*`],
        ["order", conlangSpec],
        ["limit", limit],
        ["offset", offset],
    ] as string[][]);

    const effectiveUri = `${backendUrl}/${conlangDb}?${params}`;

    fetch(`${effectiveUri}`)
        .then((resp) => resp.json())
        .then((json) => {
            jsonHandler(json);
        });
}

export {backendUrl, updateEntry, getPassword, setPassword, searchEntry};