time-capsule install; time-capsule monitor

time-capsule

#!/bin/bash
set -o posix


TC=$0

GLOBAL_EXCLUDES="\.git"

alert() {
    msg=$1
    echo -e "==> \033[1m$msg\033[0m"
}

watch() {
    local path="${1-.}"

    alert "watching changes in '$path'"
    fswatch --batch-marker -e $GLOBAL_EXCLUDES -r "$path" 
}

backup() {
    local name="${1-$(cat_name)}"
    if [[ -z "$name" ]]; then
        alert "name not provided" >&2
        exit 1
    fi
    local path="${2-.}"

    alert "backing up $path into $name"
    bup index "$path" && bup save -n "$name" "$path"
    alert "done"
}

watch_and_backup() {
    local name="${1-$(cat_name)}"
    if [[ -z "$name" ]]; then
        alert "name neither provided nor set" >&2
        exit 1
    fi
    local path="${2-.}"

    alert "first backup immediately"
    $TC backup "$name" "$path" 

    $TC watch "$path" | {
        while true; do
            read -s -r
            [ -z "$REPLY" ] && return
                
            if [ "$REPLY" == "NoOp" ]; then
        	    $TC backup "$name" "$path" 
            else 
        	    echo "$REPLY"
            fi
        done
    }
}

cat_name() {
    cat .time-capsule 2>/dev/null
}

print_name() {
    local name
    if ! name="$(cat_name)"; then
        alert "no name set" >&2
        exit 1
    fi

    echo "$name"
}

set_name() {
    local name=$1
    if [[ -z "$name" ]]; then
        alert "name can't be empty" >&2
        exit 1
    fi
    path="${2-.}"

    alert -n "$name" > "$path/.time-capsule" && echo "name of $path set to $name"
}

web() {
    bup web --browser "$@"
}

ls() {
    bup ls "$@"
}

size() {
    du -sh ~/.bup
}

init() {
    bup init "$@"
}

install() {
    brew install fswatch par2 bup
}

case $1 in
    backup) backup "${@:2}";;
    watch) watch "${@:2}";;
    monitor) watch_and_backup "${@:2}";;
    set-name) set_name "${@:2}";;
    print-name) print_name;;
    web) web "${@:2}";;
    ls) ls "${@:2}";;
    size) size "${@:2}";;
    init) init "${@:2}";;
    install) install;;
    *) alert "Usage: $(basename "$0") backup|watch|monitor|set-name|print-name|web|install [NAME] [PATH]"
esac