#!/bin/bash

# Check if command was ran as root.
if [[ $(id -u) -eq 0 ]]; then
    echo "The command \"sphp\" should not be executed as root or via sudo directly."
    echo "When a service requires root access, you will be prompted for a password as needed."
    exit 1
fi

# Usage
if [ $# -ne 1 ]; then
    echo "Usage: sphp [phpversion]"
    echo "Versions installed:"
    brew list | grep '^php[0-9]\{2,\}$' | grep -o -E '[0-9]+' | while read -r line ; do
        echo " - phpversion: $line"
    done
    exit 1
fi

currentversion="`php -r \"error_reporting(0); echo str_replace('.', '', substr(phpversion(), 0, 3));\"`"
newversion="$1"

majorOld=${currentversion:0:1}
majorNew=${newversion:0:1}
minorNew=${newversion:1:1}

brew list php$newversion 2> /dev/null > /dev/null

if [ $? -eq 0 ]; then
    echo "PHP version $newversion found"

    # Check if new version is already the current version.
    # if [ "${newversion}" == "${currentversion}" ]; then
    #     echo -n "PHP version ${newversion} is already being used. Continue by reloading? (y/n) "
    #     while true; do
    #         read -n 1 yn
    #         case $yn in
    #             [Yy]* ) echo && break;;
    #             [Nn]* ) echo && exit 1;;
    #         esac
    #     done
    # fi

    echo "Unlinking old binaries..."
    brew unlink php$currentversion 2> /dev/null > /dev/null

    echo "Linking new binaries..."
    brew link php$newversion

    echo "Linking new modphp addon..."
    sudo ln -sf `brew list php$newversion | grep libphp` /usr/local/lib/libphp${majorNew}.so
    echo /usr/local/lib/libphp${majorNew}.so
    echo "Fixing LoadModule..."
    apacheConf=`httpd -V | grep -i server_config_file | cut -d '"' -f 2`
    sudo sed -i -e "/LoadModule php${majorOld}_module/s/^#*/#/" $apacheConf

    if grep "LoadModule php${majorNew}_module .*php${newversion}" $apacheConf > /dev/null
    then
        sudo sed -i -e "/LoadModule php${majorNew}_module .*php${newversion}/s/^#//" $apacheConf
    else
        sudo sed -i -e "/LoadModule php${majorNew}_module/s/^#//" $apacheConf
    fi

    echo "Updating version file..."

    pgrep -f /usr/sbin/httpd 2> /dev/null > /dev/null
    if [ $? -eq 0 ]; then
        echo "Restarting system Apache..."
        sudo pkill -9 -f /usr/sbin/httpd
        sudo /usr/sbin/apachectl -k restart > /dev/null 2>&1
    fi

    pgrep -f /usr/local/"Cellar|opt"/*/httpd 2> /dev/null > /dev/null
    if [ $? -eq 0 ]; then
        echo "Restarting homebrew Apache..."
        sudo pkill -9 -f /usr/local/"Cellar|opt"/*/httpd
        sudo /usr/local/bin/apachectl -k restart > /dev/null 2>&1
    fi

    # pgrep -x httpd 2> /dev/null > /dev/null
    # if [ $? -eq 0 ]; then
    #     echo "Restarting non-root homebrew Apache..."
    #     httpd -k restart > /dev/null 2>&1
    # fi

    echo "Done."

    # Show PHP CLI version for verification.
    echo && php -v
else
    echo "PHP version $majorNew.$minorNew was not found."
    echo "Try \`brew install php${newversion}\` first."
    exit 1
fi