#!/bin/sh
# imgs CLI https://git.nxhs.cloud/ge/imgs

imgs_usage() {
cat <<- EOF
Upload images to remote imgs server.

Usage: imgs [-rvh] <file>...

Options:
    -r, --remote    remote imgs instance URI e.g. https://user:password@example.org
    -v, --version   print version and exit.
    -h, --help      print this help message and exit.

Environment variables:
    IMGSREMOTE      remote imgs instance URI.
    IMGSDEBUG       enables verbose mode and logging.
    IMGSLOG         path to logfile. Default: ~/imgs_debug.log

You can set variables in ~/.imgsremote file instead of ~/.bashrc
See <https://git.nxhs.cloud/ge/imgs> for more info.
EOF
}

[ "$#" -eq 0 ] && { imgs_usage; exit 1; }

# Transform long options to short ones
for arg in "$@"; do
    shift
    case "$arg" in
        --remote) set -- "$@" "-r";;
        --help) set -- "$@" "-h";;
        --version) set -- "$@" "-v";;
        *) set -- "$@" "$arg";;
    esac
done

while getopts r:vh OPT; do
    case "$OPT" in
        r) IMGSREMOTE="$OPTARG";;
        v) echo 'imgs CLI 1.1'; exit 0;;
        h) imgs_usage; exit 0;;
        *) echo "$0: Unknown option: $OPT" >&2; exit 1;;
    esac
done

shift $((OPTIND - 1))  # shift for parse positional args

# Check variables
IMGSLOG="${IMGSLOG:-$HOME/imgs_debug.log}"
[ -n "$IMGSREMOTE" ] && return 0  # exit from func if variable is set

if [ -f "$HOME"/.imgsremote ]; then
    # shellcheck source=/dev/null
    . "$HOME"/.imgsremote
fi

if [ -z "$IMGSREMOTE" ]; then
    echo "$0: Error: IMGSREMOTE variable is not set." >&2; exit 1
fi

[ -n "$IMGSDEBUG" ] && date +"[%d %b %Y %H:%M:%S] Started" | tee -a "$IMGSLOG"

for file in "$@"; do
    filepath="$(realpath "$file")"
    if [ -n "$IMGSDEBUG" ]; then
        echo "Uploading $filepath ..." | tee -a "$IMGSLOG"
        curl -v -L -F "image=@/$filepath" "$IMGSREMOTE" 2>&1 | tee -a "$IMGSLOG"
    else
        curl -L -F "image=@/$filepath" "$IMGSREMOTE"
    fi
done

[ -n "$IMGSDEBUG" ] && date +"[%d %b %Y %H:%M:%S] Finished" | tee -a "$IMGSLOG"