#!/bin/bash
# OPENMIC: STREAM LIVE
# Streams openmic live from input/ALSA


# Includes and Declarations (global variables, formatting, and functions)
source "${APPLICATION_ROOT}/scripts/system/system-functions"
source "${APPLICATION_ROOT}/scripts/system/system-declarations"


# Get active config name, construct path to streamable config file (for validation)
CURRENTLY_ACTIVE_CONFIG_NAME=$(<"$CONFIG_FILE_IDENTIFIER_PATH")
STREAMABLE_CONFIG_FILE_PATH="$CONFIG_DIRECTORY/config-$CURRENTLY_ACTIVE_CONFIG_NAME.json"


# Check if config file exists
if [[ -f "$STREAMABLE_CONFIG_FILE_PATH" ]]; 
	
	# If exists
	then

		# Parse JSON config file for each crucial streaming variable
		v1='testing_host'
			TESTING_HOST=$(sed -e s/'[ \t]*\"\"\:\"'// -e s/'".*'// <<< $(sed -n "s/$v1//p" $STREAMABLE_CONFIG_FILE_PATH))
		v2='testing_port'
			TESTING_PORT=$(sed -e s/'[ \t]*\"\"\:\"'// -e s/'".*'// <<< $(sed -n "s/$v2//p" $STREAMABLE_CONFIG_FILE_PATH))
		v3='testing_user'
			TESTING_USER=$(sed -e s/'[ \t]*\"\"\:\"'// -e s/'".*'// <<< $(sed -n "s/$v3//p" $STREAMABLE_CONFIG_FILE_PATH))
		v4='testing_password'
			TESTING_PASSWORD=$(sed -e s/'[ \t]*\"\"\:\"'// -e s/'".*'// <<< $(sed -n "s/$v4//p" $STREAMABLE_CONFIG_FILE_PATH))
		v5='testing_mount'
			TESTING_MOUNT=$(sed -e s/'[ \t]*\"\"\:\"'// -e s/'".*'// <<< $(sed -n "s/$v5//p" $STREAMABLE_CONFIG_FILE_PATH))
		v6='playlist_url'
			PLAYLIST_URL=$(sed -e s/'[ \t]*\"\"\:\"'// -e s/'".*'// <<< $(sed -n "s/$v6//p" $STREAMABLE_CONFIG_FILE_PATH))
		v7='randomize_playlist_files'
			RANDOMIZE_PLAYLIST_FILES=$(sed -e s/'[ \t]*\"\"\:\"'// -e s/'".*'// <<< $(sed -n "s/$v7//p" $STREAMABLE_CONFIG_FILE_PATH))
		v8='hardware_audio_frame_size'
			HARDWARE_AUDIO_FRAME_SIZE=$(sed -e s/'[ \t]*\"\"\:\"'// -e s/'".*'// <<< $(sed -n "s/$v8//p" $STREAMABLE_CONFIG_FILE_PATH))

		# Parse JSON config file for each metadata streaming variable
		v9='testing_metadata_artist'
			TESTING_METADATA_ARTIST=$(sed -e s/'[ \t]*\"\"\:\"'// -e s/'".*'// <<< $(sed -n "s/$v9//p" $STREAMABLE_CONFIG_FILE_PATH))
			# TESTING_METADATA_ARTIST="${TESTING_METADATA_ARTIST// /\+}"
		vA='testing_metadata_title'
			TESTING_METADATA_TITLE=$(sed -e s/'[ \t]*\"\"\:\"'// -e s/'".*'// <<< $(sed -n "s/$vA//p" $STREAMABLE_CONFIG_FILE_PATH))
			# TESTING_METADATA_TITLE="${TESTING_METADATA_TITLE// /\+}"



		# Ensure all configuration files are not blank
		if [ -z "${TESTING_HOST}" ] || [ -z "${TESTING_PORT}" ] || [ -z "${TESTING_USER}" ] || [ -z "${TESTING_PASSWORD}" ] || [ -z "${TESTING_MOUNT}" ] || [ -z "${PLAYLIST_URL}" ] || [ -z "${RANDOMIZE_PLAYLIST_FILES}" ] || [ -z "${HARDWARE_AUDIO_FRAME_SIZE}" ]
		then

			# Fault if config variable is blank
			error_message "[l] Stream ALSA (to Testing): Streaming failed. Please check your configuration settings."
			echo ""

		else
			
			# Notice of Execution
			confirmation_message "${COLOR_GREEN}[l] Stream ALSA (to Testing):${COLOR_DEFAULT}";


			# Encode and Submit Metadata Change (Hack: two requests to get changes to take)
			CONVERTED_TESTING_METADATA_TITLE=$(url_encode_string "$TESTING_METADATA_TITLE")
			CONVERTED_TESTING_METADATA_ARTIST=$(url_encode_string "$TESTING_METADATA_ARTIST")
			curl "http://$TESTING_USER:$TESTING_PASSWORD@$TESTING_HOST:$TESTING_PORT/admin/metadata?mode=updinfo&mount=/&title='$CONVERTED_TESTING_METADATA_TITLE'&artist='$CONVERTED_TESTING_METADATA_ARTIST'"
			sleep 5
			curl "http://$TESTING_USER:$TESTING_PASSWORD@$TESTING_HOST:$TESTING_PORT/admin/metadata?mode=updinfo&mount=/&title='$CONVERTED_TESTING_METADATA_TITLE'&artist='$CONVERTED_TESTING_METADATA_ARTIST'"


			# Liquidsoap Log
			echo -e "\n"
			echo -e "\n"
			echo -e "${COLOR_LIGHT_MAGENTA}${FONT_BOLD}[STARTING LIQUIDSOAP]${FONT_DEFAULT}${COLOR_DEFAULT}\n"
			echo -e "${COLOR_MAGENTA}"
			

			# Launch Liquidsoap using variables
			liquidsoap '
			set("frame.audio.size",'$HARDWARE_AUDIO_FRAME_SIZE'); 
			
			stream_master_source = output.icecast(
				%mp3(bitrate=192,samplerate=44100),
				host="'$TESTING_HOST'",
				port='$TESTING_PORT',
				user="'$TESTING_USER'",
				password="'$TESTING_PASSWORD'",
				mount="'$TESTING_MOUNT'",
				input.alsa(bufferize = true)	
			)

			stream_master_source
			'

			echo -e ${COLOR_DEFAULT}
			echo -e "${COLOR_LIGHT_MAGENTA}${FONT_BOLD}[EXITING LIQUIDSOAP]${FONT_DEFAULT}${COLOR_DEFAULT}\n"
			echo -e "\n"
			echo -e "\n"
			echo -e "\n"


		fi

    # If no config file exists    
	else	
		error_message "[l] Stream ALSA (to Testing): No config file specified. To stream, please assign a config."
		echo ""

fi