#! /usr/bin/env bash

ENV_FILE_DOCKER=./srcs/.env
ENV_FILE_SVELTE=./srcs/requirements/svelte/api_front/.env

# Function to generate passwords
#
	function generate_password
	{
		# base64 alphabet is alphanumeric characters and "+", "/", "="
		# https://en.wikipedia.org/wiki/Base64#Base64_table_from_RFC_4648
		# we could delete them 'tr -d "+/="', but that would randomly shorten the string
		echo $(openssl rand -base64 32 | tr "/" "_" );
	}

	function make_env_for_docker_and_svelte
	{
		echo "Creating a new environment for docker"
		NODE_ENV=""
		# Ask if dev or prod environment
		while [ "$NODE_ENV" != "1" ] && [ "$NODE_ENV" != "2" ]; do
			read -p "Enter the env configuration for nestjs : \"1\" for development OR \"2\" for production : " NODE_ENV
		done
		if [ "$NODE_ENV" = "1" ]; then
			echo "NODE_ENV=development"								> "$ENV_FILE_DOCKER"
		else
			echo "NODE_ENV=production"								> "$ENV_FILE_DOCKER"
		fi
		read -p "Enter the name of the host like \"localhost\" : " PROJECT_HOST
		echo "WEBSITE_HOST=$PROJECT_HOST"							>> "$ENV_FILE_DOCKER"
		echo "WEBSITE_PORT=8080"									>> "$ENV_FILE_DOCKER"
		echo "POSTGRES_USER=postgres"								>> "$ENV_FILE_DOCKER"
		echo "#if change postgres pswd, do make destroy"			>> "$ENV_FILE_DOCKER"
		echo "POSTGRES_PASSWORD=$(generate_password)"				>> "$ENV_FILE_DOCKER"
		echo "POSTGRES_DB=transcendance_db"							>> "$ENV_FILE_DOCKER"
		echo "POSTGRES_HOST=postgresql"								>> "$ENV_FILE_DOCKER"
		echo "POSTGRES_PORT=5432"									>> "$ENV_FILE_DOCKER"
		echo "REDIS_HOST=redis"										>> "$ENV_FILE_DOCKER"
		echo "REDIS_PORT=6379"										>> "$ENV_FILE_DOCKER"
		echo "REDIS_PASSWORD=$(generate_password)"					>> "$ENV_FILE_DOCKER"
		# Connection to 42
		echo "In the next steps, we'll need to enter the client secret and client id of the 42 api"
		read -p "Enter the client id of the 42 api : " CLIENT_ID
		echo "FORTYTWO_CLIENT_ID=$CLIENT_ID"						>> "$ENV_FILE_DOCKER"
		read -p "Enter the client secret of the 42 api : " CLIENT_SECRET
		echo "FORTYTWO_CLIENT_SECRET=$CLIENT_SECRET"				>> "$ENV_FILE_DOCKER"
		FT_CALLBACK="http://\$WEBSITE_HOST:\$WEBSITE_PORT/api/v2/auth/redirect"
		echo "FORTYTWO_CALLBACK_URL=$FT_CALLBACK"					>> "$ENV_FILE_DOCKER"
		# Other configs
		echo "COOKIE_SECRET=$(generate_password)"					>> "$ENV_FILE_DOCKER"
		echo "PORT=3000" 											>> "$ENV_FILE_DOCKER"
		echo "TWO_FACTOR_AUTHENTICATION_APP_NAME=Transcendance"		>> "$ENV_FILE_DOCKER"
		echo "TICKET_FOR_PLAYING_GAME_SECRET=$(generate_password)"	>> "$ENV_FILE_DOCKER"
		grep "^WEBSITE_" "$ENV_FILE_DOCKER" > "$ENV_FILE_SVELTE"
	}

	function choose_options_and_process {
		if [ -f "$ENV_FILE_DOCKER" ]; then
			echo "The file $ENV_FILE_DOCKER already exists. Do you want to overwrite it ? (y/n)"
			OVERWRITE=""
			# Ask to overwrite the .env files
			while [ "$OVERWRITE" != "y" ] && [ "$OVERWRITE" != "n" ]; do
				read -p "Enter your choice : " OVERWRITE
			done
			if [ "$OVERWRITE" = "y" ]; then
				rm "$ENV_FILE_DOCKER" && rm "$ENV_FILE_SVELTE"
				docker rmi -f postgres
				make_env_for_docker_and_svelte
			else
				if [ ! -f "$ENV_FILE_SVELTE" ]; then
					grep "^WEBSITE_" "$ENV_FILE_DOCKER" > "$ENV_FILE_SVELTE"
				fi
				echo "The file $ENV_FILE_DOCKER will not be overwritten. The script will exit."
				exit 0
			fi
		else
			make_env_for_docker_and_svelte
		fi
	}

#	Create a new environment for docker

	choose_options_and_process

	echo "The environment has been created successfully. You can now wait for the docker to build the project."