#!/bin/bash
# Open file on a remote Emacs server.
# https://andy.wordpress.com/2013/01/03/automatic-emacsclient/ with added sudo.

params=()
sudo=0
local=0

for p in "${@}"; do
    if [[ "${p}" == "-n" ]]; then
        params+=( "${p}" )
    elif [[ "${p}" == "-c" ]]; then
        params+=( "${p}" )
    elif [[ "${p}" == "-cn" ]]; then
        params+=( "${p}" )
    elif [[ "${p:0:1}" == "+" ]]; then
        params+=( "${p}" )
    elif [[ "${p}" == "--sudo" ]]; then
        sudo=1
    elif [[ "${p}" == "--local" ]]; then
        # Use local server, for use with --sudo.
        local=1
    else
        # Setting field separator to newline so that filenames with spaces will
        # not be split up into 2 array elements.
        OLDIFS=${IFS}
        IFS=$'\n'

        if [[ $(id -u) -eq 0 || ${sudo} -eq 1 ]]; then
            if [[ ${local} -eq 0 ]]; then
                params+=( "/ssh:$(hostname -f)|sudo:$(hostname -f):"$(realpath -m "${p}") )
            else
                params+=( "/sudo:localhost:"$(realpath -m "${p}") )
            fi
        else
            params+=( "/ssh:$(hostname -f):"$(realpath "${p}") )
        fi

        IFS=${OLDIFS}
    fi
done

emacsclient_tcp=""
if [[ -f "${HOME}/.emacs.d/server/server" ]]; then
    emacsclient_tcp="-f ~/.emacs.d/server/server"
fi
emacsclient ${emacsclient_tcp} "${params[@]}"