// ==UserScript==
// @name         Kemono Party No Login Favorites
// @namespace    http://tampermonkey.net/
// @version      0.1
// @author       You
// @match        https://kemono.party/*
// @grant        none
// ==/UserScript==

document.querySelector("ul.header").innerHTML = "<li><a href='/favorites'>Favorites</a></li>"+document.querySelector("ul.header").innerHTML;

function map_to_array(mapobject){
    var output = [];
    mapobject.forEach((v,k) => {
        output.push([k,v]);
    });
    return output;
}

if(window.localStorage.userscript_favorites !== undefined && window.localStorage.userscript_favorites.length > 0){
    window.extension_favorites = new Map(JSON.parse(window.localStorage.userscript_favorites));
}else{
    if(window.localStorage.favorites !== undefined && window.localStorage.favorites.length > 0){
        // convert existing old no-login favorites to extension format
        console.log("importing old favorites...");
        var old_favs = window.localStorage.favorites.split(",");
        for(let i = 0; i < old_favs.length; i++){
            let sp = old_favs[i].split(":");
            old_favs[i] = [
                "/"+sp[0]+"/user/"+sp[1],
                {
                    display_name:"UNKNOWN (visit artist page to update)",
                    id:sp[1],
                    platform:sp[0]
                }
            ];
        }
        window.extension_favorites = new Map(old_favs);
        window.localStorage.userscript_favorites = JSON.stringify(map_to_array(window.extension_favorites));
        alert("existing favorites detected, importing to extension. extension will update artist names after you visit their page once.");
        console.log("favorites saved");
    }else{
        window.extension_favorites = new Map();
    }
}

window.add_extension_favorite = function(){
    document.getElementById("extension_favorite_button").innerText = "★ Favorited!";
    document.getElementById("extension_favorite_button").href = "javascript:window.remove_extension_favorite();";
    let sp = window.location.pathname.split("/user/");
    window.extension_favorites.set(window.location.pathname,{
        display_name:document.querySelector("#info-block a[href='"+window.location.pathname+"']").innerText,
        id:sp[1],
        platform:sp[0].replace("/","")
    });
    console.log("added favorite",window.location.pathname);
    window.save_extension_favorites();
}

window.remove_extension_favorite = function(){
    document.getElementById("extension_favorite_button").innerText = "☆ Favorite";
    document.getElementById("extension_favorite_button").href = "javascript:window.add_extension_favorite();";
    window.extension_favorites.delete(window.location.pathname);
    console.log("removed favorite",window.location.pathname);
    window.save_extension_favorites();
}

window.save_extension_favorites = function(){
    window.localStorage.userscript_favorites = JSON.stringify(map_to_array(window.extension_favorites));
    console.log("favorites saved");
}

if(window.location.href.indexOf("/user/") > -1 && document.querySelector("#info-block a[href^='javascript:favorite_artist']") !== null){
    // this replaces favorite button on artist pages with extension functionality
    document.querySelector("#info-block a[href^='javascript:favorite_artist']").id = "extension_favorite_button";
    document.getElementById("extension_favorite_button").href = "javascript:window.remove_extension_favorite();";
    if(window.extension_favorites.has(window.location.pathname)){
        document.getElementById("extension_favorite_button").innerText = "★ Favorited!";
        // this records artist names if it was an imported unknown artist
        if(window.extension_favorites.get(window.location.pathname).display_name == "UNKNOWN (visit artist page to update)"){
            let sp = window.location.pathname.split("/user/");
            window.extension_favorites.set(window.location.pathname,{
                display_name:document.querySelector("#info-block a[href='"+window.location.pathname+"']").innerText,
                id:sp[1],
                platform:sp[0].replace("/","")
            });
            console.log("unknown artist name updated");
            window.save_extension_favorites();
        }
    }
}else if(window.location.href == "https://kemono.party/account/login"){
    document.querySelector("div.views").setAttribute("class","vertical-views");
    // when not logged in, clicking favorites redirects to login page.
    // this makes the login page show favorites, with login form still at bottom. if you're logged in, you'll see logged-in favorites, not extension favorites. artist favorite buttons won't work for account favorites though, disable the extension if you arent using it lol
    var build_html = `<table class="search-results" width="100%"><thead><tr><th width="50px">Icon</th><th>Name</th><th>Service</th></tr></thead><tbody>`;
    window.extension_favorites.forEach((fav,favurl) => {
        build_html += `<tr class="artist-row"><td><a href="`+favurl+`"><div class="user-icon" style="background-image: url('/icons/`+fav.platform+`/`+fav.id+`');"></div></a></td><td><a href="`+favurl+`">`+fav.display_name+`</a></td><td>`+fav.platform+`</td>`;
    });
    build_html += `</tbody></table><br>`;
    document.querySelector(".login-container").outerHTML = build_html + document.querySelector(".login-container").outerHTML;
}