#!/bin/bash
###
# This file is part of the code-cloppers openbox setup. Use at your own risk.
#
# This script should setup openbox for a user on ubuntu

set -eo pipefail

is-in-path() {
    which "$1" &>>/dev/null
}

install-apt-dependencies() {
    echo "=> Installing apt dependencies"
    set -x
    sudo apt-get update && \
	sudo apt-get install \
	     xcompmgr \
	     openbox \
	     albert \
	     plank \
	     dunst \
	     numix-icon-theme-circle \
	     vorbis-tools \
	     sound-theme-freedesktop
    set +x
}

are-in-path() {
    [[ $# -gt 0 ]] || return 0
    is-in-path "$1" || return 1
    shift
    are-in-path "$@"
}

asset-dirs-exist() {
    [[ -d /usr/share/icons/Numix-Circle ]] && [[ -d /usr/share/sounds/freedesktop ]]
}

install-dependencies() {
    echo "=> Checking dependencies"
    if ! are-in-path xcompmgr openbox dunst ogg123 || ! asset-dirs-exist; then
	install-apt-dependencies
    fi

    declare notify_send_dir=''
    notify_send_dir="$(local-dir)/applications/notify-send.sh"
    if ! [[ -d "$notify_send_dir" ]]; then
	mkdir -p "$notify_send_dir"
	git clone git@github.com:vlevit/notify-send.sh.git "$notify_send_dir"
    fi
}

here() {
    dirname "$(readlink -f "${BASH_SOURCE[0]}")"
}

config-dir() {
    if ! [[ $# -ge 1 ]]; then
	echo "$(caller) Expected argument" >&2
	return 1
    fi
    
    declare app="$1"
    echo "$HOME/.config/$app"
}

create-dir-if-not-exists() {
    [[ -d $1 ]] || mkdir -p "$1"
}

copy-files-in-dir-to() {
    declare source="$1" destination="$2"
    create-dir-if-not-exists "$destination"
    cp -r "$source/"* "$destination"/
}

copy-config() {
    echo "=> Copying config"

    copy-files-in-dir-to "$(here)/config/albert" "$(config-dir albert)"
    copy-files-in-dir-to "$(here)/config/openbox" "$(config-dir openbox)"
    copy-files-in-dir-to "$(here)/config/dunst" "$(config-dir dunst)"
}

add-custom-startup() {
    declare startup_file=''
    read -rep "Please provide a path to a custom startup script for your sessions (default: ~/.startup):" \
	 startup_file

    [[ -z $startup_file ]] && startup_file="$HOME/.startup"
    printf 'source "%s"\n' "$startup_file" >> "$(config-dir openbox)/autostart.sh"
}

ppa-has-been-added() {
    declare ppa="$1"
    grep -q "^deb .*$ppa" /etc/apt/sources.list /etc/apt/sources.list.d/*
}

add-ppa-if-not-added() {
    declare ppa="$1"
    if ! ppa-has-been-added "$ppa"; then
	printf 'Adding ppa "%s"\n' "$ppa"
	sudo add-apt-repository "ppa:$ppa"
    fi
}

add-ppas() {
    add-ppa-if-not-added 'nilarimogard/webupd8'
    add-ppa-if-not-added 'numix/ppa'
}

cache-dir() {
    echo "$HOME/.cache/clopper-ob"
}

local-dir() {
    echo "$HOME/.local/share/clopper-ob"
}

create-cache-dir() {
    mkdir -p "$(cache-dir)"
}

create-local-dir() {
    mkdir -p "$(local-dir)"
}

copy-bins-to-local-dir() {
    cp -r "$(here)/bin" "$(local-dir)/"
}

copy-libs-to-local-dir() {
    cp -r "$(here)/lib" "$(local-dir)/"
}

setup-openbox-for-user() {
    add-ppas
    install-dependencies
    copy-config
    create-cache-dir
    create-local-dir
    copy-bins-to-local-dir
    copy-libs-to-local-dir
    add-custom-startup

    echo "=> Finished"
}

setup-openbox-for-user