# vim: filetype=sh
#shellcheck shell=sh

source_env_file() {
	if [ ! -f "${1}" ]; then
		return
	fi
	eval "$(
		grep -v '^\s*\#' "${1}" |
			grep -v '^\s*$' |
			sed 's/^\s*export//g' |
			sed 's/^/export /g'
	)"
}

add_date_prefix() (
	DIR=$(dirname "$1")
	FILE=$(basename "$1")
	DATE=$(date -r "$1" +"%F")
	if [ ! -f "$1" ]; then
		echo "unknown file: $1"
		exit 1
	fi
	mv "$1" "$DIR/${DATE}_${FILE}"
)

get_bitrate() (
	if [ ! -f "$1" ]; then
		echo "[ERROR] unknown file: $1"
		exit 1
	fi
	command_installed exiftool
	exiftool -AudioBitrate "$1" | awk '{print $4}'
)

json_to_yaml() (
	ARG=${1-}
	command_installed bat dasel
	if [ -z "${ARG}" ]; then
		dasel --read json --write yaml | bat --language yaml
	elif [ -f "${ARG}" ]; then
		dasel --read json --write yaml --file "${ARG}" | bat --language yaml
	else
		echo "${ARG}" | dasel --read json --write yaml | bat --language yaml
	fi
)

yaml_to_json() (
	ARG=${1-}
	command_installed bat dasel
	if [ -z "${ARG}" ]; then
		dasel --read yaml --write json | bat --language json
	elif [ -f "${ARG}" ]; then
		dasel --read yaml --write json --file "${ARG}" | bat --language json
	else
		echo "${ARG}" | dasel --read yaml --write json | bat --language json
	fi
)

github_releases() (
	USER=${1}
	REPO=${2-}
	command_installed curl
	if [ -z "${REPO}" ]; then
		USER=$(echo "${1}" | sed 's|/| |g' | awk '{print $1}')
		REPO=$(echo "${1}" | sed 's|/| |g' | awk '{print $2}')
	fi
	curl --silent --header "Accept: application/vnd.github.v3+json" \
		"https://api.github.com/repos/${USER}/${REPO}/releases"
)

github_tags() (
	USER=${1}
	REPO=${2-}
	command_installed curl jq
	if [ -z "${REPO}" ]; then
		USER=$(echo "${1}" | sed 's|/| |g' | awk '{print $1}')
		REPO=$(echo "${1}" | sed 's|/| |g' | awk '{print $2}')
	fi
	curl --silent --header "Accept: application/vnd.github.v3+json" \
		"https://api.github.com/repos/${USER}/${REPO}/tags" |
		jq -r '.[].name'
)

command_installed() (
	set -ue
	for cmd in "${@}"; do
		if ! command -v "${cmd}" 1>&2 >/dev/null; then
			echo "${cmd} not installed" 1>&2
			exit 1
		fi
	done
)

min_jpg() (
	set -ue
	command_installed jpegtran
	for FILE in "$@" ; do
		PERMISSIONS=$(stat --format '%a' "${FILE}")
		OUT_FILE=$(mktemp)
		jpegtran -optimize -perfect -outfile "${OUT_FILE}" "${FILE}"
		mv "${OUT_FILE}" "${FILE}"
		chmod "${PERMISSIONS}" "${FILE}"
	done
)

min_png() (
	set -ue
	command_installed pngcrush
	for FILE in "$@" ; do
		PERMISSIONS=$(stat --format '%a' "${FILE}")
		OUT_FILE=$(mktemp)
		pngcrush -rem alla -reduce -brute "${FILE}" "${OUT_FILE}"
		mv "${OUT_FILE}" "${FILE}"
		chmod "${PERMISSIONS}" "${FILE}"
	done
)

get_create_date() (
	date -r "$1" +"%F"
)

#shellcheck disable=SC2120
slugify() (
	if [ "$#" -ne 0 ]; then
		#shellcheck disable=SC2119
		echo "$@" | slugify
	else
		iconv --to-code ascii//TRANSLIT |
			sed -E 's/[^a-zA-Z0-9]+/-/g' |
			sed -E 's/^-+\|-+$//g' |
			tr '[:upper:]' '[:lower:]'
	fi
)