Bulk Remove Facebook Friends.js

// Facebook makes it very difficult to bulk remove friends. This should help.
// 
// The goal here was not to completely automate this process, but to automate
// like 85% of it so it would take minutes and not hours with a little bit of hand-holding.
// 
// To get this to work:
//     1. Navigate to https://www.facebook.com/friends/list in Chrome
//     2. Open the inspector -> sources -> snippets
//     3. Dump this javascript below into a new snippet
//     4. If `DRY_RUN = true`, you'll see the names of your friends that *would* be deleted
//     5. If it's false, they'll actually be deleted (you'll watch the actions being taken on the screen)
//     6. Command + Enter should run the script. You'll watch the screen take the unfriending actions
//        and see the logs in the console
// 
// The hand-holding part is that you'll need to buffer up your friends by just scrolling
// a ton on the left side so the browser is aware of a bunch of friends (instead of the default 20).
// 
// Also, from what I can tell, there's no rhyme or reason to how the list of friends is returned
// which makes it a little hard to dry run the thing since if you refresh your results will be different.
// 
// Sometimes you'll get an error that it can't do the unfriending. Not sure why but a refresh will fix it most times.
// 
// Facebook will rate limit your actions (like, every action, not just unfriending) after a certain number.
// Not sure what that is exactly, but it was around 1,300 unfriends for me. Not sure how long you have to wait to have access yet.
// 
// This script works best if you plan to go mostly scorched earth.


const KEEP_NAMES = [
    // checked against an "include" of the full text of a person's full name,
    // so just putting last names is the best bet here
]

const DRY_RUN = true

const delay = ms => new Promise(res => setTimeout(res, ms));

const unfriendAll = async () => {
    console.log('Starting new unfriend group...')
    return new Promise(async resolve => {
        const LISTED_FRIENDS = this.document.querySelectorAll("div[aria-label=\"More\"]");
        for (let i = 0; i < LISTED_FRIENDS.length; i++) {
            const person = LISTED_FRIENDS[i]
            const name = person.parentElement.parentElement.parentElement.parentElement.innerText.split("\n")[0]
            if (!KEEP_NAMES.some(n => name.includes(n))) {
                console.log(`%cDeleting ${name}`, "color:red")
                await unfriend(person)
            }
        }
        resolve()
    })
}

function unfriend(person) {
    return new Promise(async resolve => {
        if (DRY_RUN) resolve()
        else if (!DRY_RUN) {
            person.click()
            await delay(200)
            clickUnfriend()
            await delay(200)
            confirmUnfriend()
            await delay(200)
            resolve()
        }
    })
}

function clickUnfriend() {
    const menu = this.document.querySelector("div[role=menu]")
    const menuItems = menu.querySelectorAll("div[role=menuitem]")
    const unfriendOption = menuItems[menuItems.length - 1]
    unfriendOption.click()
}

function confirmUnfriend() {
    const confirm = this.document.querySelector("div[aria-label=Confirm]")
    confirm.click()
}

const main = async () => {
    await unfriendAll()
    if (!DRY_RUN) location.reload()
}

main()