add backup command

mc

@@ -36,8 +36,34 @@ declare -rA commands=(
     [uninstall]='uninstall POST {"mod": "%s"}'
     [search]='search POST {"mod": "%s"}'
     [mod-list]='mod-list GET'
+	[backup]='backup FUNC'
 )
 
+function backup() {
+    if [[ ! $(which lftp) ]]; then echo "lftp is required"; exit 1; fi
+
+	local sftp_credentials="$(mc my-sftp)"
+	if [[ "$(jq -r '.success' <<<"${sftp_credentials}" )" != "true" ]]; then 
+		echo "ERROR: failed to get sftp login info"; 
+		exit 1; 
+	fi
+
+	local host="$(jq -r '.hostname' <<<"${sftp_credentials}")"
+	local username="$(jq -r '.user' <<<"${sftp_credentials}")"
+	local port="$(jq -r '.port' <<<"${sftp_credentials}")"
+	local password="$(jq -r '.password' <<<"${sftp_credentials}")"
+
+    local localdir="${MY_MC_BACKUP_DIR:-${HOME}/my-mc_backup/}"
+    if [[ ! -d ${localdir} ]]; then mkdir -p ${localdir}; exit 1; fi
+
+    pushd "${localdir}"
+
+    lftp -u "${username}","${password}" "${host}":"${port}" -e "set sftp:connect-program 'ssh -o StrictHostKeyChecking=no'; mirror -c --use-pget minecraft/ minecraft/; quit"
+
+    popd
+}
+
+
 function first() {
     echo "$@" | cut --delimiter=" " --fields="-1"
 }
@@ -48,18 +74,9 @@ function rest() {
     fi
 }
 
-function status_format() {
-    local tmp=(${1//-/ })
-    local second=${tmp[1]}
-    if [[ "$second" == "sftp" ]]; then 
-        printf "${second^^}"
-        return
-    fi
-    printf "${second^}"
-}
-
 function usage() {
     printf "API key for my-mc must be exported using 'export MY_MC_API_KEY=<my-mc api key>'\n\n"
+    printf "Backup directory can be changed from default ~/mc-mc_backup/ by using 'export MY_MC_BACKUP_DIR=</path/to/dir/>'\n\n"
     printf "Positional arguments will fill the JSON objects with values from left to right.\n\n"
     printf "COMMANDS:\n"
     for command in "${!commands[@]}"; do
@@ -68,16 +85,19 @@ function usage() {
     printf "\n"
 }
 
-
 args=("$@")
 # remove command from arg list while preserving quoted strings.
 args=("${args[@]:1}")
 
+if [[ ! $(which jq) ]]; then echo "jq is required"; exit 1; fi
+
 for command in "${!commands[@]}"; do
     if [[ "$1" == "${command}" ]]; then
         if [[ "$(first $(rest ${commands[$1]}))" == "POST" ]]; then
             curl -sS "${headers[@]}" -X "$(first $(rest ${commands[$1]}))" "${base_url}$(first "${commands[$1]}")" -d "$(printf "$(rest $(rest ${commands[$1]}))\n" "${args[@]}")"
             echo ""
+        elif [[ "$(first $(rest ${commands[$1]}))" == "FUNC" ]]; then
+			eval "$(first ${commands[$1]})"
         else
             curl -sS "${headers[@]}" -X "$(first $(rest ${commands[$1]}))" "${base_url}$(first "${commands[$1]}")"
             echo ""