// ==UserScript==
// @name         aniSearch Enhancer
// @namespace    http://git.nivram.io/marvinlehmann/ani-search-enhancer
// @version      2.1
// @description  Adds buttons to the info site of an anime on aniSearch which links you directly to various streaming portals.
// @author       Marvin Lehmann
// @grant        GM_xmlhttpRequest
// @include      /^https?://www.anisearch.de/anime/.*$/
// @connect      animepahe.com
// @connect      twist.moe
// @downloadURL  http://git.nivram.io/marvinlehmann/ani-search-enhancer/raw/master/ani-search-enhancer.user.js
// @supportURL   http://git.nivram.io/marvinlehmann/ani-search-enhancer/issues
// ==/UserScript==
(function () {
    'use strict';

    document.head.insertAdjacentHTML("beforeend", //html
        `<style>
            #page-action-stream:before {
                content:"";
            }

            #page-action-stream {
                background-color: #ee8600 !important;
            }

            #page-action-stream:hover {
                background-color: #ee8600 !important;
            }

            #page-action-stream span {
                line-height: 26px !important;
            }

            #stream-links {
                -moz-appearance: none;
                -webkit-appearance: none;
                appearance: none;
                border: none;
                background-color: #ee8600;
                color: #e6e6e6;
                box-shadow: none;
                padding: 0 5px;
            }

            #stream-links > option {
                direction: ltr;
                font-weight: bold;
            }
        </style>`);

    class AnimePaheSearchResult {
        constructor() {
            /** @type {number} */
            this.episodes = 0;
            /** @type {number} */
            this.id = 0;
            /** @type {string} */
            this.poster = "";
            /** @type {string} */
            this.relevance = "";
            /** @type {number} */
            this.score = 0;
            /** @type {string} */
            this.season = "";
            /** @type {string} */
            this.slug = "";
            /** @type {string} */
            this.session = "";
            /** @type {string} */
            this.status = "";
            /** @type {string} */
            this.title = "";
            /** @type {string} */
            this.type = "";
            /** @type {number} */
            this.year = 0;
        }
    }

    const animeTitle = document.getElementById("htitle").textContent;
    /** @type {number} */
    let animeReleaseYear = null;
    let anime_release_year = document.querySelector("header .release_year");
    if (anime_release_year) {
        animeReleaseYear = parseInt(anime_release_year.textContent.match(/\d{4}/));
    } else {
        let tmp = document.getElementById("htitle").textContent.match(/\((\d{4})\)/);
        if (tmp) {
            animeReleaseYear = parseInt(tmp[1]);
        }
    }
    let animeStatus = document.querySelector('#information [lang=ja] ~ .status').textContent.split(": ")[1];
    let animeType = document.querySelector("#information .type").childNodes[1].textContent.trim().split(',')[0]

    if (animeTitle) {
        const encodedTitle = encodeURI(animeTitle).replace(/'/g, "%27");
        const encodedTitleWithoutYear = encodeURI(animeTitle.replace(/ \(\d{4}\)/g, "")).replace(/'/g, "%27");

        if (!document.getElementById("page-action")) {
            document.getElementById("htitle").insertAdjacentHTML("beforeend", /*html*/ `<ul id="page-action" class="inline"></ul>`);
        }

        document.getElementById("page-action").insertAdjacentHTML("beforeend", //html
            `<li id="page-action-stream">
                <span>
                    <select id="stream-links">
                        <option value="">Stream wählen</option>
                    </select>
                </span>
            </li>`);

        const stream_links = document.getElementById("stream-links");
        const page_action_stream = document.getElementById("page-action-stream");

        const clickHandler = function (e) {
            if (e.target === e.currentTarget) {
                const targetUrl = stream_links.value;
                if (targetUrl) {
                    window.open(targetUrl, "_blank");
                }
            }
        };

        page_action_stream.onclick = clickHandler;

        /** @param {HTMLOptionElement} option */
        const stylized = (option, styles) => {
            Object.assign(option.style, styles);
            return option;
        }

        stream_links.insertAdjacentElement("beforeend", stylized(new Option("Piracy Index", "https://theindex.moe/"), {
            direction: "rtl",
            fontWeight: "bold"
        }));
        stream_links.insertAdjacentElement("beforeend", new Option("AniCloud", "https://anicloud.io/search?q=" + encodedTitleWithoutYear));

        GM_xmlhttpRequest({
            method: "GET",
            url: "https://animepahe.com/api?m=search&l=8&q=" + encodedTitleWithoutYear,
            responseType: "json",
            onload: function (resp) {
                const typeMapping = {
                    "TV-Serie": "TV",
                    "OVA": "OVA",
                    "Film": "Movie",
                    "Bonus": "Special"
                };

                const statusMapping = {
                    "Abgeschlossen": "Finished Airing",
                    "Laufend": "Currently Airing",
                    "Zukünftig": ""
                }

                if (resp.response.total > 0) {
                    /** @type {AnimePaheSearchResult[]} */
                    const data = resp.response.data;
                    /** @type {AnimePaheSearchResult} */
                    let chosenResult = data[0];
                    /** @type {number[]} */
                    let potential = Array(data.length);

                    for (let [index, value] of data.entries()) {
                        potential[index] = 0;
                        if (value.year === animeReleaseYear || (value.season === "Winter" && value.year - 1 === animeReleaseYear)) {
                            potential[index]++;
                        }
                        if (value.type === typeMapping[animeType]) {
                            potential[index] += 2;
                        }
                        if (value.status === statusMapping[animeStatus]) {
                            potential[index]++;
                        }
                    }

                    chosenResult = data[potential.indexOf(Math.max(...potential))];
                    const targetPage = "https://animepahe.com/anime/" + chosenResult.session;
                    stream_links.insertAdjacentElement("beforeend", new Option("AnimePahe", targetPage));
                } else {
                    stream_links.insertAdjacentElement("beforeend", stylized(new Option("AnimePahe", "https://animepahe.com"), {
                        fontStyle: "italic",
                        color: "#DDD"
                    }));
                }
            }
        });
    }
})();