config-test.sh

#!/bin/bash
set -e
# Stores the error messages
errorList=()
# The file to be tested
file=$1

#Artwork dimensions ('widthxheight' in pixels)
artworkDimensions="600x540"
#Install ImageMagick if not already installed (required to verify artworkDimensions)
if ! [ -x "$(command -v convert)" ]; then
  echo 'ImageMagick is not installed. Installing...'
  sudo apt install imagemagick
fi


# Checks if the config file exists
if [ ! -f "$file" ]; then
	echo "File '$file' does not exist"
	exit 1
fi

# Retreive base path from the first argument
basePath=$(dirname "$1")/

# Removing CRLF characters
sed -i "s/\r//g" "${file}"

# Stores all the expected properties
declare -A propertyDict
propertyDict=( ["repository"]=0 ["language"]=0 ["image"]=0 ["title"]=0 ["genre"]=0 ["rating"]=0 ["author"]=0 ["description"]=0 )
# Stores all the optional properties
declare -A optPropertyDict
optPropertyDict=( ["compile-command"]=0 ["executable"]=0 )

# Reading the file
while read line || [ -n "$line" ]; do
	# Ignoring lines starting with # or empty lines
	if [[ ${line:0:1} == *"#"* ]] || [[ -z $line ]]; then
		continue
	fi
	# Split string with delimiter "="
	IFS='=' read -ra array <<< $line
	# Checking if key is in propertyDictionary
	if [[ -v propertyDict[${array[0]}] ]]; then
		# If key is in propertyDictionary, then increment value
		propertyDict[${array[0]}]=$((++propertyDict[${array[0]}]))
	elif [[ -v optPropertyDict[${array[0]}] ]]; then
		# If key is in optPropertyDictionary, then increment value
		optPropertyDict[${array[0]}]=$((++optPropertyDict[${array[0]}]))
	else
		errorList+=("Key: Invalid, ${array[0]}")
	fi

	# Log the imagePath and ExecutableName
	if [ ${array[0]} == "image" ]; then
		imagePath=${array[1]}
	elif [ ${array[0]} == "executable" ]; then
		executableName=${array[1]}
	fi
# Closing the file
done < "$file"

#print propertyDictionary keys and values
echo "Occurrences of keys in config.txt file:"
for key in "${!propertyDict[@]}"; do
	echo "$key: ${propertyDict[$key]}"
	# If value is equal to one
	if [ ${propertyDict[$key]} -gt 1 ]; then
		errorList+=("Key: ${key}, invalid number of occurences, ${propertyDict[$key]}")
	fi
done

echo "Occurrences of optional keys:"
for key in "${!optPropertyDict[@]}"; do
	echo "$key: ${optPropertyDict[$key]}"
	# If value is greater than one
	if [ ${optPropertyDict[$key]} -gt 1 ]; then
		errorList+=("Key: ${key}, invalid number of occurences, ${optPropertyDict[$key]}")
	fi
done

echo ""

echo "Checking if image path is valid:"
# Checking if image and executable paths are valid
if [ -f "$basePath$imagePath" ]; then
	echo "Image file exists"
else
	echo "Image file does not exist"
	errorList+=("Config: Image file does not exist")
fi

# if [ -f "$basePath$executableName" ]; then
# 	echo "Executable file exists"
# else
# 	echo "Executable file does not exist"
# 	errorList+=("Config: Executable path doesn't match")
# fi

echo ""

echo "Checking if the image matches the specified dimensions ($artworkDimensions):"
# Check if the image file is of the specified dimensions (600x540px)
imageDimensions=$(identify -format "%[fx:w]x%[fx:h]" "$basePath$imagePath")
if [ "$imageDimensions" == "$artworkDimensions" ]; then
	echo "Image dimensions are correct"
else
	echo "Image dimensions are not $artworkDimensions"
	errorList+=("Config: Image dimensions are not 600x540, they are $imageDimensions")
fi

# Get the length of the errorList
 if [[ ${#errorList[@]} > 0 ]]; then
	echo ""
 	echo "Errors encountered: ${#errorList[@]}"
	for error in "${errorList[@]}"; do
		echo $error
	done
	exit 1
 fi