#!/bin/sh
set -eu

CACHE_DIR="${XDG_CACHE_HOME:-$HOME/.cache}/keybase"
RUNTIME_DIR="${XDG_RUNTIME_DIR:-/run/user$(id -u)}/keybase"

if [ -f "${XDG_CONFIG_HOME:-$HOME/.config}/user-dirs.dirs" ]
then
    # shellcheck disable=SC1091
    . "${XDG_CONFIG_HOME:-$HOME/.config}/user-dirs.dirs"
else
    XDG_DOCUMENTS_DIR="$HOME/Documents"
fi
DOCUMENTS_DIR="$XDG_DOCUMENTS_DIR/Smile/keybase"

start () {
    mkdir -p "$CACHE_DIR"
    mkdir -p "$RUNTIME_DIR"

    if [ "$(ss -Hpx src /run/user/1000/keybase/keybased.sock)" = '' ]
    then
        keybase --log-file "$CACHE_DIR/keybase.service.log" \
            service \
            --chdir "$RUNTIME_DIR" &
    fi

    if ! mountpoint --quiet "$RUNTIME_DIR/kbfs"
    then
        KEYBASE_RUN_MODE=prod kbfsfuse \
            -log-file "$CACHE_DIR/keybase.kbfs.log" \
            -runtime-dir "$RUNTIME_DIR" &
    fi
}

stop () {
    if mountpoint --quiet "$RUNTIME_DIR/kbfs"
    then
        fusermount -uz "$RUNTIME_DIR/kbfs"
    fi

    if [ -f "$RUNTIME_DIR/keybased.pid" ]
    then
        kill "$(cat "$RUNTIME_DIR/keybased.pid")"
    else
        pkill keybase || true
    fi

    pkill kbfsfuse || true
}

sync () {
    if ! mountpoint --quiet "$RUNTIME_DIR/kbfs"
    then
        start
    fi
    mkdir -p "$DOCUMENTS_DIR"
    cp -rf "$RUNTIME_DIR/kbfs/"* "$DOCUMENTS_DIR/"
    if [ ! -w "/keybase" ]
    then
        echo "Skipped creating links in /keybase, directory not writeable." >&2
    else
        find /home/nimrod/Documents/Smile/keybase/ -maxdepth 1 -mindepth 1 -exec ln -sf --target /keybase/ '{}' \;
    fi
}

usage () {
    echo "usage: $(basename "$0") start|stop|sync" >&2
    exit 1
}

command="${1:-}"

case "$command" in
    start) shift; start "$@";;
    stop) shift; stop "$@";;
    sync) shift; sync "$@";;
    *) usage;;
esac