.bash_functions

#!/usr/bin/env bash
# meleu's .bash_function
########################
# shellcheck disable=1091

# private stuff
if [ -f "${HOME}/.bash_functions_private" ]; then
	source "${HOME}/.bash_functions_private"
fi

# functions for colorized output
###############################################################################
# ANSI escape color codes
if [[ -z "${ansiRed}" ]]; then
	readonly ansiRed='\e[1;31m'
	readonly ansiGreen='\e[1;32m'
	readonly ansiYellow='\e[1;33m'
	readonly ansiNoColor='\e[0m'
fi

echoRed() {
	echo -e "${ansiRed}$*${ansiNoColor}"
}

echoGreen() {
	echo -e "${ansiGreen}$*${ansiNoColor}"
}

echoYellow() {
	echo -e "${ansiYellow}$*${ansiNoColor}"
}

err() {
	echoRed "$*" >&2
}

warn() {
	echoYellow "$*" >&2
}
###############################################################################

# .files(): update the dotfiles repo
# NOTE: the use of (parentheses) rather than {curly-brackets} is to prevent
#       the need to cd back.
.files() (
	local dotfilesDir="${HOME}/dotfiles"
	local gitStatus

	cd "${dotfilesDir}" || return 1

	gitStatus="$(git status --porcelain)"

	if [[ -z "${gitStatus}" ]]; then
		warn "dotfiles: nothing to update"
		return 0
	fi

	git add --all &&
		git status &&
		git commit -m "update $(date +'%Y-%m-%d %R'): ${gitStatus}" &&
		git pull --rebase &&
		git push
)

# launch(): Open the file/URL with the default application.
launch() {
	case "$OSTYPE" in
	"cygwin"*)
		cygstart "$@"
		;;
	"darwin"*) # MacOS
		open "$@"
		;;
	*)
		xdg-open "$@"
		;;
	esac
}

# google(): Open google.com in the default browser, arguments are used as search terms.
google() {
	local terms
	terms="$(urlencode "$@")"
	launch "https://www.google.com/search?q=${terms}"
}

# 0x0(): Upload file or URL shortener. See more info at https://0x0.st/
0x0() {
	local arg="$1"
	local curlArg

	if [[ -f "${arg}" ]]; then
		curlArg="file=@${arg}"
	elif [[ ${arg} =~ ^https?://.* ]]; then
		curlArg="shorten=${arg}"
	else
		echo "error: '${arg}': invalid argument (not a file neither a URL)" >&2
		return 1
	fi

	curl -F"${curlArg}" https://0x0.st
}

# transfer(): upload file to https://transfer.sh
transfer() {
	local url='https://transfer.sh'
	local file
	local file_name

	uploadFile() {
		curl --progress-bar --upload-file "-" "${url}/${file_name}" |
			tee /dev/null
	}

	# usage
	if [ $# -eq 0 ]; then
		echo -e "No arguments specified.\nUsage:\n  transfer <file|directory>\n  ... | transfer <file_name>" >&2
		return 1
	fi

	# check if there's a terminal connected to the standard input
	if tty -s; then
		file="$1"
		file_name=$(basename "$file")

		if [ ! -e "$file" ]; then
			echo "$file: No such file or directory" >&2
			return 1
		fi

		# if it's a dir, create a zip
		if [ -d "$file" ]; then
			# shellcheck disable=2288
			file_name="$file_name.zip" ,
			(cd "$file" && zip -r -q - .) | uploadFile
		else
			uploadFile <"${file}"
		fi

	else
		file_name=$1
		uploadFile
	fi
	echo
}

# dud(): get the disk usage of a directory and its subdirs
dud() {
	du --max-depth 1 --human-readable "${@:-.}" |
		sort --human-numeric-sort
}

getGithubLatestVersion() {
	local repo="$1"
	local regexUserSlashRepo='^[^/]+/[^/]+$'

	if [[ ! "${repo}" =~ $regexUserSlashRepo ]]; then
		err "ERROR: invalid argument '${repo}'"
		echo "Usage: ${FUNCNAME[0]} user/repo" >&2
		return 1
	fi

	curl \
		--silent \
		--location \
		"https://api.github.com/repos/${repo}/releases/latest" |
		jq -e --raw-output '.tag_name'
}

################################################################################
# dolarhoje():  gets, from dolarhoje.com, the dollar value
#               compared with brazilian real
# dependencies:
# - lynx: sudo apt install lynx
# - pup: https://github.com/ericchiang/pup
dolarhoje() {
	local currency="$1"
	local htmlFile
	local url

	[[ "${currency}" == 'dolar' ]] && currency=
	htmlFile="${TMPDIR:-/tmp}/dolarhoje${currency}.html"
	url="https://dolarhoje.com/${currency}"

	# Check if ${htmlFile} is older than 2 hours
	# see: https://stackoverflow.com/a/2005658/6354514
	touch -d '2 hours ago' /tmp/2h-ago

	# if ${htmlFile} doesn't exist or is older than 2h, recreate it
	if [[ ! -e "${htmlFile}" || "${htmlFile}" -ot "/tmp/2h-ago" ]]; then
		curl --fail -sL "${url}" |
			pup 'div#cotacao' >"${htmlFile}" 2>/dev/null ||
			{
				echo "ERROR: unable to get data from ${url}" >&2
				rm -f "${htmlFile}"
				return 1
			}
	fi

	lynx -dump "${htmlFile}" | sed 's/\(_\|hoje\)//g'
}

alias cotacao='dolarhoje'
################################################################################

# a find that ignores the '.git/' directory
gfind() {
	find "$@" -not -iwholename '*/\.git/*'
}