configure

#!/bin/bash

# index:
# 	0. Config				==> line 10
# 	1. fallback function	==> line 14
# 	2. help_ function		==> line 29
# 	3. enjoy_this fucntion	==> line 41
# 	3. main logic			==> line 47

### Configurations
	BUILD_PATH_i2c='./bin/'
###

fallback() {
	case $1 in 
		1 ) #	GCC
			echo "Make sure install GCC"
			;;
		2 ) #	Rust
			echo "No rust compiler found. Please install Rustlang at https://www.rust-lang.org"
			;;
		3 ) # Java
			
			;;
		esac
		exit 2;
}

help_() {	#HLP
	echo -e "configure [ACTION] [LANGUAGE]"								"\n\n" \
		"Actions:"														"\n\t" \
			"compile, com"	"\t" "Compile specified language code."		"\n\t" \
			"build, bu"		"\t" "alias for compile"					"\n\n" \
		"Languages:"													"\n\t" \
			"c, C"			"\t\t" "Compile with GCC"					"\n\t" \
			"rust, rs"		"\t" "Compile with Rust"					"\n\n" \
		"help, -h ..."		"\t\t" "Print this message."					"\n\n" \
		"int2char will support all compute languages on the Earth. I call it is VILLAIN :>"
}

enjoy_this() {	# EJT
	echo "$1 build completed. Enjoy!"
}

# Process given parameters
# PRM
case $1 in
	[cC]ompile | [bB]uild | com | bu )
		case $2 in
			[cC] )
				which gcc > /dev/null && gcc src/int2char.c -o $BUILD_PATH_i2c/int2char-c || fallback 1
				enjoy_this GCC
				;;
			[rR][sS] | [rR]ust )
				which rustc > /dev/null && rustc src/int2char.rs -o $BUILD_PATH_i2c/int2char-rs -C strip=debuginfo || fallback 2
				enjoy_this Rust
				;;
			
			* )
				echo "?Unknowen language:" $2
				exit 1
				;;
		esac
		;;
	help | h | --help | -h | -help )
		help_
		exit 1;
		;;
	* )
		echo -e "Invalid or no command was given. \n" \
			"Please type 'help' to see a guide."
		exit 1;
		;;
esac