pre-commit

#!/bin/bash

# Verify the script is running inside the ProfileManifests repository and get the repository root path
repository_path=$( git rev-parse --show-toplevel 2> /dev/null );
if !( [[ $? -eq 0 ]] && [[ $(git remote -v) == *"ProfileManifests.git"* ]] ); then
	printf "%s\n" "This script must be run inside the ProfileManifests repository."
	exit 1
fi
cd $repository_path

index_path="${repository_path}/Manifests/index"
if ! [[ -f ${index_path} ]]; then
	printf "%s\n" "This script requires an index file to be present at: ${index_path}"
	exit 1
fi

# Get the latest commit to verify against
if git rev-parse --verify HEAD >/dev/null 2>&1; then
    against=HEAD
else
    against=$( git rev-list --max-parents=0 HEAD )
fi

updated_file="false"

# Loop through all plist-files to be committed
for file in $( git diff --name-only --diff-filter=AM "${against}" | grep '\.plist$' ); do
		
	# Get the file name
	file_name=$( basename "${file}" )
	
	# Get the file directory
	file_directory=$(basename $( dirname "${file}" ))
		
	# Get the value of the pfm_version key
	file_version=$( /usr/libexec/PlistBuddy -c "Print pfm_version" "${file}" 2>/dev/null )

	# Verify the value returned is valid
	if [[ -z ${file_version} ]] && ! /usr/libexec/PlistBuddy -c "Add pfm_version integer 1" "${file}"; then
		printf "%s\n" "${file_name}: Failed to add value: 1 for key: pfm_version"
		exit 1
	elif ! [[ ${file_version} =~ ^[0-9]+$ ]]; then
		printf "%s\n" "${file_name}: Invalid or missing value: ${file_version} for key: pfm_version"
		exit 1	
	fi
	
	# Get the value of the pfm_domain key
	file_domain=$( /usr/libexec/PlistBuddy -c "Print pfm_domain" "${file}" 2>/dev/null )
	
	# Get the file hash
	file_hash=$( plutil -convert binary1 -o - "${file}" | md5 -q )
	
	# Get the saved file hash
	file_hash_index=$( /usr/libexec/PlistBuddy -c "Print ${file_directory}:${file_domain}:hash" "${index_path}" 2>/dev/null )
	
	if [[ ${file_hash} != ${file_hash_index} ]]; then
		
		# Increment the current version number by 1
		version_updated=$(( file_version + 1 ))
		
		# Add the new value to the commit
		if ! /usr/libexec/PlistBuddy -c "Set pfm_version ${version_updated}" "${file}" 2>/dev/null; then
			printf "%s\n" "$( basename ${file} ): Failed to set value: ${version_updated} for key: pfm_version"
			exit 1
		fi
		
		# Get the value of the pfm_last_modified key
		file_last_modified=$( /usr/libexec/PlistBuddy -c "Print pfm_last_modified" "${file}" 2>/dev/null )

		# Verify the value returned is valid
		if [[ -z ${file_last_modified} ]] && ! /usr/libexec/PlistBuddy -c "Add pfm_last_modified date $( LANG=C /bin/date +%a" "%b" "%d" "%T" "%Z" "%Y )" "${file}"; then
			printf "%s\n" "${file_name}: Failed to add value: $( LANG=C /bin/date +%a" "%b" "%d" "%T" "%Z" "%Y ) for key: pfm_last_modified"
			exit 1
		elif ! /usr/libexec/PlistBuddy -c "Set pfm_last_modified $( LANG=C /bin/date +%a" "%b" "%d" "%T" "%Z" "%Y )" "${file}"; then
			printf "%s\n" "${file_name}: Failed to add value: $( LANG=C /bin/date +%a" "%b" "%d" "%T" "%Z" "%Y ) for key: pfm_last_modified"
			exit 1	
		fi
		
		updated_file="true"
	fi
done

if [[ ${updated_file} == true ]]; then
	updateIndex="${repository_path}/updateIndexManifests"
	if [[ -f ${updateIndex} ]]; then
		if ! "${updateIndex}"; then
			printf "%s\n" "Failed to run updateIndex at ${updateIndex}"
			exit 2
		fi
	else
		printf "%s\n" "${updateIndex}: No such file or directory"
		exit 2
	fi
	printf "%s\n" "Updated version and date information in committed manifests, please press commit again to include the added changes."
	exit 3
fi

if $( git diff --name-only --diff-filter=AM "${against}" | grep '\.png$' ); then
	updateIndex="${repository_path}/updateIndexIcons"
	if [[ -f ${updateIndex} ]]; then
		if ! "${updateIndex}"; then
			printf "%s\n" "Failed to run updateIndex at ${updateIndex}"
			exit 2
		fi
	else
		printf "%s\n" "${updateIndex}: No such file or directory"
		exit 2
	fi
	printf "%s\n" "Updated version and date information in committed icons, please press commit again to include the added changes."
	exit 3
fi