#!/bin/zsh
_DEPENDENCIES+=(
	pg_dump
)
_REQUIRED_ENV+=()
source ${0:a:h}/common.zsh
#####################################################################

BACKUP_POSTGRES() {
	local _HOST _NAME _PASS _PORT _USER
	GET_POSTGRES_LOGIN_ARGS $@

	local DATA_DIR="$SCWRYPTS_DATA_PATH/db/$_HOST/$_NAME/pg_dump"
	[ ! -d $DATA_DIR ] && mkdir -p $DATA_DIR
	cd $DATA_DIR

	local OUTPUT_FILE="$DATA_DIR/$_NAME.dump"
	[ -f $OUTPUT_FILE ] && {
		local BACKUP_COUNT=$(ls "$DATA_DIR/$_NAME."*".dump" | wc -l)
		ls "$DATA_DIR/$_NAME."*".dump"

		__INFO "discovered previous dump for '$_HOST/$_NAME'"
		__INFO "backing up previous dump to '$_NAME.$BACKUP_COUNT.dump'"

		mv "$OUTPUT_FILE" "$DATA_DIR/$_NAME.$BACKUP_COUNT.dump"
	}

	__STATUS "making backup of  : $_USER@$_HOST:$_PORT/$_NAME"
	__STATUS "output file       : $OUTPUT_FILE"

	PGPASSWORD="$_PASS" pg_dump \
		--verbose \
		--format custom \
		--host "$_HOST" \
		--port "$_PORT" \
		--username "$_USER" \
		--dbname "$_NAME" \
		--file "$OUTPUT_FILE" \
		&& { __SUCCESS "finished backup of '$_HOST/$_NAME'"; __SUCCESS "saved to '$OUTPUT_FILE'"; } \
		|| { __ERROR "error creating backup for '$_HOST/$_NAME' (see above)"; return 1; }
}

#####################################################################
BACKUP_POSTGRES $@