bboxshow

#!/usr/bin/env bash
PROGRAM_NAME=$(basename "$0")
# shellcheck disable=SC2124
BBOX="${@}"
BBOX="${BBOX:--}"
BBOX="${BBOX//[[:space:]]/}"

function usage {
    echo "Display bounding box in browser using bboxfinder.com"
    echo ""
    echo "usage: $PROGRAM_NAME <bbox>"
    echo "  arguments:"
    echo "  - <bbox>: \$minx,\$miny,\$maxx,\$maxy[,\$epsg] default in EPSG:4326 (arg or stdin)"
    exit 1
}

set -euo pipefail

function open_url() {
    local bbox min_x max_x min_y max_y url
    bbox=$1
    epsg_code=$(echo "$bbox" | awk -F, '{print $5}')

    if [[ -n $epsg_code ]]; then
        bbox=$(echo "$bbox" | awk -F, '{print $1,$2,$3,$4}' | tr ' ' ',')
        bbox=$(bboxproj "$epsg_code" 4326 "$bbox")
    fi
    min_x=$(echo "$bbox" | awk -F, '{print $1}')
    min_y=$(echo "$bbox" | awk -F, '{print $2}')
    max_x=$(echo "$bbox" | awk -F, '{print $3}')
    max_y=$(echo "$bbox" | awk -F, '{print $4}')
    url="http://bboxfinder.com/#${min_y},${min_x},${max_y},${max_x}"

    echo "$url"
    if command -v xdg-open &>/dev/null; then
        xdg-open "$url"
    elif command -v gnome-open &>/dev/null; then
        gnome-open "$url"
    fi
}

if [[ $BBOX == "-" ]]; then
    # BBOX passed on stdin
    if [ -t 0 ]; then
        # if do not allow interactive tty
        usage
    fi
    while read -r line; do
        open_url "$line"
    done <"/dev/stdin"
else
    # BBOX passed as argument
    open_url "$BBOX"
fi