#! /bin/bash

while [[ $# -gt 0 ]]
do
key="$1"

case $key in
	-p|--project)
		project="$2"
		shift # past argument
		shift # past value
	;;

	-t|--threads)
		man_thread="$2"
		shift # past argument
		shift # past value
	;;

	-h|--help)
		echo "usage: build -p <project> [OPTIONS]"
		echo "Builds the tiles with osm2city"
		echo ""
		echo "OPTIONS"
		echo "  -p, --project   Mandatory, project name which you want to clear of chache files."
		echo "  -h, --help      Shows this help and exit"
		echo "  -t, --threads   Number of threads used for building"
		echo "                  This will overwrite the value from the general-settings file"
		exit 0
	;;

	*)
		echo "Unknown option $key"
		exit 1
	;;
esac
done

if [ -z "$project" ]; then
	echo "Option -p <project> is mandatory"
	exit 1
fi

if [ ! -f "projects/$project" ]; then
	echo "Project does not exsist. Please run ./create-project to create one"
	exit 1
fi


source venv/bin/activate > /dev/null
if [ $? == 1 ]; then
	echo "Couldn't find the venv. Please run './create-venv' to create one"
	exit 1
fi
source projects/$project/settings > /dev/null
if [ $? == 1 ]; then
	echo "Couldn't find the settings file for the given project."
	echo "Please check if the project exsists and contains the 'settings' file."
	echo "To create a new project run './create-project'"
	exit 1
fi
source general-settings > /dev/null
if [ $? == 1 ]; then
	echo "Couldn't find the general settings. Please rename the 'general-settings-template'"
	echo "file to 'general-setting' and edit it so the values match your setup."
	exit 1
fi

if [ ! -z "$man_thread" ]; then
	threads=$man_thread
fi

# change to the project dir and build
cd projects/$project
time ( python3 ../../osm2city/build_tiles.py -f params.ini -b "$bounds" -p "$threads" 2>&1 ) 2> exec-time
cat exec-time | grep "real" | sed "s/real\t\([0-9]*\)m\([0-9]*\).*/Building $project took \1 minutes and \2 seconds./"