Batch upload icon links as emojis to RocketChat.

upload.sh

#!/usr/bin/env bash

# Author: Amar Paul

# Add custom emojis to a rocketchat server.
# Usage:
# Expects a yaml/ dir with .yaml files, formatted as such:
#   - name: <name_of_emoji>
#     src: <src_url>
#
# Script will read yaml files, download each src from URL
# into imgs/ directory, then upload to rocketchat using the
# rocketchat emoji-custom.create endpoint.
#
# Full usage:
# <script> --user USER --url ROCKETCHAT_URL [action]
#   actions:
#       --download-yamls <file>
#           dl all the .yaml files listed in <file> into yamls/
#           (expects file to be at least one line of YAML URLs)
#       --logout
#       --list
#       --upload (default)
#           expects yaml files in the yamls/ dir
#
# Note:
# This script isn't smart about what's already on the server,
# so uploading an emoji with a name that already exists will
# return a {success: false} json from the server and continue.
#
# It also doesn't know if an image has already been downloaded.
#
# Depends on `jq' for some JSON parsing.
#
# Some yaml-formatted emoji packs:
# https://github.com/amtypaldos/rocketchat-emoji-upload

ESC="$(printf '\033')"
GRN="${ESC}[31;1m"
RED="${ESC}[32;1m"
NOC="${ESC}[30;0m"

USER=""
url=""

retfile=login-return.json

get_uid  () { cat $retfile | jq -r '.data | .userId'    ;}
get_auth () { cat $retfile | jq -r '.data | .authToken' ;}

_login () {
    echo -n "Password for <$USER>: "
    read -s password

    # bit of a hack to get around logging in w/ ldap enabled
    curl -H "Content-type:application/json" ${url}/login \
          -d "{\"ldap\": true, \"username\": \"${USER}\", \"ldapPass\": \"${password}\", \"ldapOptions\":{} }" > $retfile

          #-d "{\"ldap\": true, \"username\": \"${USER}\"}" > $retfile
}

_logout () {
    curl "${url}/logout" \
        -H "X-Auth-Token: $(get_auth)" \
        -H "X-User-Id: $(get_uid)"

    [[ $? -eq 0 ]] && rm -f $retfile
}

list_emojis () {
    curl "${url}/emoji-custom" \
        -H "X-Auth-Token: $(get_auth)" \
        -H "X-User-Id: $(get_uid)"
}

get_file () {
    (pushd imgs/ && wget $1 && popd) &>/dev/null
    echo "imgs/${1##*/}"
}

upload_emoji () {
    printf "name=$1, "
    printf "emoji=@$2"
    printf "\n"
    curl "${url}/emoji-custom.create" \
        -H "Content-Type: multipart/form-data" \
        -H "X-Auth-Token: $(get_auth)" \
        -H "X-User-Id: $(get_uid)" \
        -F "emoji=@$2" -F "name=$1"
    printf "\n\n"
}

grab_files () {
    local name=""
    local src=""

    if [[ $(uname) == "Darwin" ]]; then
        alias grep=ggrep
    fi

    for ym in yamls/*yaml; do
        while read -r line || [[ -n "$line" ]]; do
            if echo $line | grep -o "^[^\W]*- name: " > /dev/null; then
                name="${line#*- name: }"
            fi
            if echo $line | grep -o "^[^\W]*src: " > /dev/null; then
                src="${line#*src: }"
                echo "${GRN}Downloading: ${NOC}$src"
                src="$(get_file $src)"
            fi

            if [[ -n "$name" ]] && [[ -n "$src" ]]; then
                printf "${RED}Uploading  : ${NOC}"
                upload_emoji $name $src
                name=""
                src=""
            fi
        done < $ym
    done
}

dl_yamls () {
    [[ ! -e $1 ]] && echo "File: $1 doesn't exist." && exit 1
    [[ ! -d yamls/ ]] && mkdir -p yamls

    pushd yamls/ >/dev/null
    while read -r line || [[ -n "$line" ]]; do
        wget $line
    done < ../$1
    popd >/dev/null
}

#
#
#

# default action
action=grab_files

while [[ $# -gt 0 ]]; do
    case $1 in
        --user)
            USER=$2
            shift; shift
            ;;
        --url)
            url=${2%/}
            shift; shift
            ;;
        --logout)
            action=_logout
            shift
            ;;
        --list)
            action=list_emojis
            shift
            ;;
        --download-yamls)
            dl_yamls $2
            exit 0
            ;;
        *)
            shift
            ;;
    esac
done

[[ -z $USER ]] && echo "Required: --user" && exit 1
[[ -z $url ]]  && echo "Required: --url"  && exit 1

[[ $action != "_logout" ]] && [[ ! -e $retfile ]] && _login

[[ ! -d imgs/ ]]  && mkdir -p imgs
[[ ! -d yamls/ ]] && echo "Required directory: yamls/" && exit 1

$action

Also, see the update version for mattermost: https://gist.github.com/Amar1729/e0d1018a88d2a7a2fe1f6e9fd998ceaf