#!/bin/bash

# PHP to use.
php=`which php`

# Get name of the project (probably topmost directory name).
projectname="${PWD##*/}"

# The code standard to use.
codestandard='PSR2'

# create empty errors array
declare -a errors

# Check if we're on a semi-secret empty tree
if git rev-parse --verify HEAD
then
	against=HEAD
else
	# Initial commit: diff against an empty tree object
	against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
fi

# fetch all changed php files and validate them
files=$(git diff-index --name-only --diff-filter=ACMR $against | grep '\.php$')
if [ -n "$files" ]; then

	for file in $files; do

		echo
		echo -e "  + Checking the PHP files of \033[1;33m${projectname}\033[1;0m for syntax errors..."

		# first check if they are valid php files
		output=`$php -l $file | grep 'Errors parsing'`

		# if it did contain errors, we have output
		if [ -n "$output" ]; then
			echo -e "\033[1;31m$file contains php syntax errors\033[1;0m"
			echo
			errors=("${errors[@]}" "$output")
		fi

		echo
		echo -e "  + Validating the PHP files of \033[1;33m${projectname}\033[1;0m for adherence to code standards..."

		# checks if the phpcs output contains '| ERROR |'
		output=`vendor/bin/phpcs --standard=$codestandard --extensions=php --encoding=utf8 --report=full $file | grep '| ERROR |'`

		# if it did contain errors, we have output
		if [ -n "$output" ]; then
			echo -e "\033[1;31m$file fails coding standards\033[1;0m"
			echo
			phpcs --standard=PSR2 --extensions=php --encoding=utf8 --report=full $file
			errors=("${errors[@]}" "$output")
		fi
	done
fi

# if we have errors, exit with 1
if [ -n "$errors" ]; then
    echo -e "  + \033[1;31mABORTING COMMIT\033[1;0m"
    echo
    exit 1
fi

echo -e '  + \033[1;32mNo errors found!\033[1;0m'
echo
exit 0