// ==UserScript==
// @name         Fet Group Blocker
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Block all users in a given FetLife Group
// @author       ⬡-Drone 4661
// @match        https://fetlife.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=fetlife.com
// @grant        none
// ==/UserScript==


const expiration = 6000000;
const appendButton = () => {
    let joinButton = document.getElementsByClassName("flex-none pl-3.5 pt-2 xs:pl-8 lg:pt-0");
    if (joinButton.length < 1) {
        return;
    }
    let parentFlex = joinButton[0].parentElement;
    let buttonLabel = "🛑 Block Group Members";
    if (localStorage.getItem("FetlifeBlocker") !== null) {
        let blocker = JSON.parse(localStorage.getItem("FetlifeBlocker"));
        if (blocker.group.toString() === window.location.href.split("/")[4]) {
            if (blocker.activation + expiration /*10 minutes*/ < Date.now() || blocker.status === "expired") {
                console.log("Expired but from the button adder");
                buttonLabel = "❌ Auto-Block Expired";
            } else {
                switch (blocker.status) {
                    case "nav":
                    case "scrape":
                        buttonLabel = "🔄️ Scanning...";
                        break;
                    case "block":
                        buttonLabel = "🔄️ Blocking...";
                        break;
                    case "complete":
                        buttonLabel = "✅ Blocking Complete";
                        break;
                    default:
                        break;
                }
            }
        }

    }
    parentFlex.innerHTML = parentFlex.innerHTML + `<div
    class="flex-none pl-3.5 pt-2 xs:pl-8 lg:pt-0">
    <button id="blockMemberButton"
    class="relative no-underline items-center rounded-sm select-none border link red-100 border-red-600 hover-red-100 bg-red-600 hover:bg-red-700 transition fill-red-100 leading-normal text-sm py-2 px-3.5 font-normal text-center justify-center inline-flex"
    data-color="red"
    type="button">
    <span class="xs:inline-block">` +
    buttonLabel + '</span></button></div>';
    let blockMemberButton = document.getElementById("blockMemberButton");
    blockMemberButton.onclick = () => {
        // Scrape group members
        // Block each member
        if (localStorage.getItem("FetlifeBlocker") === null) {
            // First click
            localStorage.setItem("FetlifeBlocker", JSON.stringify({
                "origin": window.location.href,
                "members": [],
                "group": parseInt(window.location.href.split("/")[4]),
                "activation": Date.now(),
                "status": "nav"
            }));
            window.location.href = "https://fetlife.com/groups/" + parseInt(window.location.href.split("/")[4]) + "/members?page=1";
        } else {
            let blocker = JSON.parse(localStorage.getItem("FetlifeBlocker"));
            if (blocker.status == "complete" || blocker.status == "expired") {
                // First click
                localStorage.setItem("FetlifeBlocker", JSON.stringify({
                    "origin": window.location.href,
                    "members": [],
                    "group": parseInt(window.location.href.split("/")[4]),
                    "activation": Date.now(),
                    "status": "nav"
                }));
                window.location.href = "https://fetlife.com/groups/" + parseInt(window.location.href.split("/")[4]) + "/members?page=1";
            }
        }
    };
    return;
};

const navigateToNextPage = () => {
    // get next page num from processed nav
    // if already last page, update localStorage and return to origin
    // localstorage (FetlifeBlocker -> null, FetLifeBlockedUsers -> +=members)
    let nav = document.getElementsByClassName("pagination mt-6 text-center");
    if (nav.length > 0) {
        if (nav[0].children[nav[0].children.length - 1].toString().includes("members")){
            // not last page yet
            window.location.href = nav[0].children[nav[0].children.length - 1].toString();
            return;
        }
    }
    // last page
    // All members have been scraped
    let blocker = JSON.parse(localStorage.getItem("FetlifeBlocker"));
    blocker.status = "block";
    localStorage.setItem("FetlifeBlocker", JSON.stringify(blocker));
    window.location.href = blocker.origin;
    return;
};

const scrapeMembers = () => {
    if ( document.body.classList.toString().includes("page-loading") ) {
        // still loading
        // Retry after 1.5 seconds
        setTimeout(scrapeMembers, 1500);
        return;
    }
    // get all members
    let users = [];
    // Foe each column
    document.getElementsByClassName("w-full px-1 md:w-1/2").forEach(i => {
        // For each member element
        for (let y = 0; y < i.children.length; y++){
            let userElement = i.children[y].children[0].children[0].children[1].children[0].children[0];
            let UserID = userElement.href.split("/")[4];
            let UserName = userElement.innerText;
            users.push({
                "id": UserID,
                "name": UserName
            });
        }
    });
    let blocker = JSON.parse(localStorage.getItem("FetlifeBlocker"));
    users.forEach(i => {
        if (!blocker.members.some(e => e.id === i.id)) {
            blocker.members.push(i);
        }
    });
    localStorage.setItem("FetlifeBlocker", JSON.stringify(blocker));

    navigateToNextPage();
};

const nextUser = () => {
    let userBlock = JSON.parse(localStorage.getItem("FetlifeUserBlock"));
    if (userBlock === null) {
        window.location.href = "https://fetlife.com/groups";
        return;
    }
    // Navigate to next user
    if (userBlock.users.length < 1) {
        // No users left
        let blocker = JSON.parse(localStorage.getItem("FetlifeBlocker"));
        blocker.status = "complete";
        localStorage.setItem("FetlifeBlocker", JSON.stringify(blocker));
        localStorage.removeItem("FetlifeUserBlock");
        window.location.href = userBlock.origin;
    } else {
        window.location.href = "https://fetlife.com/users/" + userBlock.users[0].id;
    }
    return;
};

(function() {
    'use strict';
    switch (window.location.pathname.split("/")[1]) {
        case "groups":
            if (/^[0-9]+$/.test(window.location.pathname.split("/")[2].toLowerCase())){
                appendButton();
                if (localStorage.getItem("FetlifeBlocker") !== null) {
                    let blocker = JSON.parse(localStorage.getItem("FetlifeBlocker"));
                    // Block run expired.. reset to null
                    if (blocker.activation + expiration /*10 minutes*/ < Date.now()) {
                        console.log("Expired");
                        blocker.status = "expired";
                        blocker.members = [];
                        localStorage.setItem("FetlifeBlocker", JSON.stringify(blocker));
                        // localStorage.removeItem("FetlifeBlocker");
                        return;
                    }
                    switch (blocker.status) {
                        case "nav":
                            if (!window.location.href.toLowerCase().startsWith("https://fetlife.com/groups/" + blocker.group + "/members")) {
                                // not on a member page, navigate to next page
                                window.location.href = "https://fetlife.com/groups/" + blocker.group + "/members?page=1";
                                return;
                            }else {
                                // on a member page now
                                blocker.status = "scrape";
                                localStorage.setItem("FetlifeBlocker", JSON.stringify(blocker));
                                window.location.href = "https://fetlife.com/groups/" + blocker.group + "/members?page=1";
                                return;
                            }
                            break;
                        case "scrape":
                            scrapeMembers();
                            break;
                        case "block":
                            // Prepare data for user page cycling
                            localStorage.setItem("FetlifeUserBlock", JSON.stringify({
                                "origin": blocker.origin,
                                "users": blocker.members,
                                "activation": Date.now(),
                            }));
                            // Navigate to first user
                            window.location.href = "https://fetlife.com/users/" + blocker.members[0].id;
                            break;
                        case "complete":
                            console.log("TODO: Announce errors if any, otherwise complete!");
                            let errors = localStorage.getItem("FetlifeError")?JSON.parse(localStorage.getItem("FetlifeError")):[];
                            if (errors.length > 0) {
                                console.log("Errors: ", errors.length);
                            } else {
                                console.log("No errors");
                            }
                            localStorage.removeItem("FetlifeError");
                            break;
                        case "expired":
                            console.log("Expired, but from status processing");
                            localStorage.removeItem("FetlifeError");
                            break;
                        default:
                            // TODO?
                            break;
                    }
                }
            }
            break;
        case "users":
            // If on a user page
            if (/^[0-9]+$/.test(window.location.pathname.split("/")[2].toLowerCase())){
                console.log("User page");
                // check localstorage
                if (localStorage.getItem("FetlifeUserBlock") !== null) {
                    let userBlock = JSON.parse(localStorage.getItem("FetlifeUserBlock"));
                    console.log("UserBlock: ", window.location.pathname.split("/")[2]);
                    // check within 10 minutes
                    if (userBlock.activation + expiration /*10 minutes*/ < Date.now()) {
                        localStorage.removeItem("FetlifeUserBlock");
                        console.log("Expired");
                        return;
                    }
                    // if user in list, block and nav to next user
                    if (userBlock.users.some(e => e.id.toString() === window.location.pathname.split("/")[2])) {
                        // If user already blocked, remove from list and skip
                        if (document.getElementsByTagName("body")[0].innerText.toLowerCase().includes("you've blocked")){
                            console.log(`User ${window.location.pathname.split("/")[2]} already blocked`);
                            // Remove user listing from localstorage
                            userBlock.users = userBlock.users.filter(e => e.id.toString() !== window.location.pathname.split("/")[2]);
                            localStorage.setItem("FetlifeUserBlock", JSON.stringify(userBlock));
                            // Navigate to next user
                            nextUser();
                            return;
                        } else if (document.getElementsByTagName("body")[0].innerText.toLowerCase().includes("isn't available")) {
                            console.log(`User ${window.location.pathname.split("/")[2]} not available`);
                            // Remove user listing from localstorage
                            userBlock.users = userBlock.users.filter(e => e.id.toString() !== window.location.pathname.split("/")[2]);
                            localStorage.setItem("FetlifeUserBlock", JSON.stringify(userBlock));
                            let errors = localStorage.getItem("FetlifeError")?JSON.parse(localStorage.getItem("FetlifeError")):[];
                            errors.push({
                                "user": window.location.pathname.split("/")[2],
                                "error": "User not available"
                            });
                            localStorage.setItem("FetlifeError", JSON.stringify(errors));
                            // Navigate to next user
                            nextUser();
                            return;
                        } else {
                            // Block user
                            console.log("TODO: Block user");
                            let blockButton = document.querySelectorAll('[title="Block"]');
                            if (blockButton.length > 0) {
                                console.log("Clicking block");
                                blockButton[0].click();
                                setTimeout( () => {
                                    // If can't block
                                    let confirmButton = document.getElementsByClassName("relative no-underline items-center rounded-sm select-none border link red-100 border-red-600 hover-red-100 bg-red-600 hover:bg-red-700 transition fill-red-100 leading-tighter text-md py-2 px-2 xs:px-3.5 font-normal text-center justify-center flex w-full");
                                    if (confirmButton.length > 0) {
                                        userBlock.users = userBlock.users.filter(e => e.id.toString() !== window.location.pathname.split("/")[2]);
                                        localStorage.setItem("FetlifeUserBlock", JSON.stringify(userBlock));
                                        if (confirmButton[0].innerText.toLowerCase().includes("gotcha")) {
                                            // Cannot block user
                                            console.log("Cannot block user" + window.location.pathname.split("/")[2]);
                                            let FetLifeError = localStorage.getItem("FetlifeError")?JSON.parse(localStorage.getItem("FetlifeError")):[];
                                            FetLifeError.push({
                                                "user": window.location.pathname.split("/")[2],
                                                "error": "Cannot block user"
                                            });
                                            // remove user from list
                                            userBlock.users = userBlock.users.filter(e => e.id.toString() !== window.location.pathname.split("/")[2]);
                                            localStorage.setItem("FetlifeUserBlock", JSON.stringify(userBlock));
                                            localStorage.setItem("FetlifeError", JSON.stringify(FetLifeError));
                                            nextUser();
                                        } else {
                                            console.log("User " + window.location.pathname.split("/")[2] + " blocked");
                                            confirmButton[0].click();
                                            setTimeout( () => {
                                                location.reload();
                                            }, 5000);
                                        }
                                    }
                                }, 500);
                            } else {
                                console.log("No block button");
                            }
                        }

                    }else {
                        // Navigate to fist user in list
                        if (userBlock.users.length < 1) {
                            // No users left
                            console.log("Missing current page user: No users left");
                            localStorage.removeItem("FetlifeUserBlock");
                            let blocker = JSON.parse(localStorage.getItem("FetlifeBlocker"));
                            blocker.status = "complete";
                            localStorage.setItem("FetlifeBlocker", JSON.stringify(blocker));
                            window.location.href = userBlock.origin;
                        } else {
                            console.log("Missing current page user: Navigating to next user");
                            window.location.href = "https://fetlife.com/users/" + userBlock.users[0].id;
                        }
                        return;
                    }
                    return;
                } else {
                    console.log("No users to block");
                }
            } else {
                console.log("Not a user page");
            }
            break;
        default:
            console.log("Not a group or user page");
            break;
    }
})();