#! /usr/bin/env bash

# Helper function
is_sourced() {
    if [ -n "$ZSH_VERSION" ]; then 
        case $ZSH_EVAL_CONTEXT in *:file:*) return 0;; esac
    else  # Add additional POSIX-compatible shell names here, if needed.
        case ${0##*/} in dash|-dash|bash|-bash|ksh|-ksh|sh|-sh) return 0;; esac
    fi
    return 1; # NOT sourced.
}

BASE_0=${BASE_0:-$0}
BASE_SHELL=$(basename "$SHELL")

if is_sourced; then
    zellij-cleanup() {
        which zellij > /dev/null && which zellij | grep -E "^$HOME" | ${SUDO:-} xargs -tr rm
        [[ -d "$HOME/.cache/zellij" ]] && echo "$HOME/.cache/zellij" | ${SUDO:-} xargs -tr rm -fR
        find /tmp -maxdepth 1 -mindepth 1 -type d -name 'zellij*' -print0 | ${SUDO:-} xargs -r0t rm -fR
        if [[ -d "$HOME/.cache/zellij" ]]; then
            printf 'Zellij cleanup failed to remove the cache directory, you might still have a zellij session active.\n'
        else
            printf 'Zellij has been cleaned up, you can now reinstall it.\n'
            unset zellij-cleanup
        fi
    }
    refresh-zellij() {
        if [ -z "$(which zellij)" ] && ! [ -x ~/.local/bin/zellij ]; then
            if [[ ! -r /tmp/zellij/bootstrap/zellij ]]; then
                printf "Grabbing zellij from the web!\n"
                bash <(curl -sL zellij.dev/launch) "--help" > /dev/null 2>&1 || true
            fi
            if [[ -r /tmp/zellij/bootstrap/zellij ]]; then
                mv /tmp/zellij/bootstrap/zellij ~/.local/bin/zellij
                rm -fR /tmp/zellij
            fi
        fi
        refresh-zellij() { :; }
    }
    zellij() {
        refresh-zellij
        if [[ $# -eq 0 ]]; then
            env zellij attach -c $USER@$(hostname)
        else
            env zellij "${@}"
        fi
    }
    zellij-completion() {
        if [[ "${BASE_SHELL}" == "zsh" ]]; then
            . <( env zellij setup --generate-completion zsh | sed -Ee 's/^(_(zellij) ).*/compdef \1\2/' )
        else
            . <( env zellij setup --generate-completion "$BASE_SHELL" )
        fi
    }
${SET:-:} -x
    if [[ -n "$(which zellij)" ]]; then
        zellij-completion
    fi
${SET:-:} -x
    # Was needed when zsh would load
    # . <( zellij setup --generate-completion "$BASE_SHELL" | sed -ne '/^function/,$p' )
    if [[ -z "$ZELLIJ_SESSION_NAME" ]]; then
        zellij attach -c $USER@$(hostname)
    fi

elif [[ "$1" == '-' ]]; then
    cat "${BASH_SOURCE[0]}"
else
    SCRIPT_NAME="$BASE_0"
    printf '%s\n' \
        "It seems $SCRIPT_NAME was invoked as a script. It should be sourced instead." \
        'The easiest way is to call it like this:' \
        "    $ . <( $SCRIPT_NAME - ) # Note the '-' after the script's name" \
        ''
fi