#!/bin/bash

# Check if the ~/.allpac directory already exists
if [ -d "$HOME/.allpac" ]; then
    echo "The AllPac directory ~/.allpac already exists."
    echo "Please remove or rename this directory before attempting to install AllPac again."
    exit 1
fi

mkdir -p "$HOME/.allpac/cache" "$HOME/.allpac/logs" "$HOME/.allpac/bin"

echo "We are about to write a new pkg.list"
echo "Do you want us to proceed?"
echo "(reply 'n' if you already have a pkg.list)"
read -p "Proceed? [Y/n] " -n 1 -r -e -i "Y" REPLY
echo
if [[ $REPLY =~ ^[Yy]$ ]] || [[ -z $REPLY ]]; then
    echo "Writing new pkg.list..."
    sleep 2
    touch ~/.allpac/pkg.list
    echo "{}" > ~/.allpac/pkg.list
else
    echo "Skipping writing new pkg.list..."
    sleep 2
fi

go_version=$(go version 2>/dev/null)
required_version="go1.21.5"

echo "Checking if Go is installed..."
if [[ "$go_version" != *"$required_version"* ]]; then
    echo "Required Go version is not installed."

    read -p "Do you want to install Go? (this will also perform a general system update with pacman) [Y/n] " -n 1 -r -e -i "Y" REPLY
    echo
    if [[ $REPLY =~ ^[Yy]$ ]] || [[ -z $REPLY ]]; then
        echo " "
        echo "Running 'sudo pacman -Syu go' instead of 'pacman -Sy'..."
        echo " "
        echo "So, because the Arch Developers won't make Pacman alert you of this, I guess AllPac has to..."
        echo " "
        sleep 2
        echo "Running 'pacman -Sy' syncs the package database, but doesn't update all the packages on the system"
        echo "This can cause a lot of problems if something gets updated but something that depends on it doesn't."
        echo " "
        echo "It's called a 'Partial Upgrade' and it can break your system"
        echo "If you wanna install a package and you don't use AllPac, always just run 'pacman -Syu {package}'"
        echo " "
        sleep 2
        echo "On the other hand;"
        echo "Running 'pacman -S' will install a package, but not update the package database. So you might not get the newest version. Which can be it's own issue."
        echo " "
        sleep 2
        echo "That's all it took to explain the issue properly Scimmia..."
        echo "Arch Linux Forums users/devs are toxic."
        sleep 4
        sudo pacman -Syu go
    else
        echo "Go not installed. Exiting."
        exit 1
    fi
fi

sleep 2

# Check if wget is installed
echo "Checking if wget is installed..."
if ! command -v wget &>/dev/null; then
    echo "wget is not installed."

    read -p "Do you want to install wget? [Y/n] " -n 1 -r -e -i "Y" REPLY
    echo
    if [[ $REPLY =~ ^[Yy]$ ]] || [[ -z $REPLY ]]; then
        sudo pacman -Syu wget
    else
        echo "wget not installed. Exiting."
        exit 1
    fi
fi

sleep 2

echo "wget is installed!"

echo "Compatible Go version is installed!"
echo "Checking if Git is installed..."

if ! command -v git &>/dev/null; then
    echo "Git is not installed."

    read -p "Do you want to install Git? [Y/n] " -n 1 -r -e -i "Y" REPLY
    echo
    if [[ $REPLY =~ ^[Yy]$ ]] || [[ -z $REPLY ]]; then
        sudo pacman -Syu git
    else
        echo "Git not installed. Exiting."
        exit 1
    fi
fi

sleep 2

echo "Git is installed!"

echo "Cloning AllPac Repository from Git..."
sleep 2

git clone https://git.pixelridgesoftworks.com/PixelRidge-Softworks/AllPac.git || { echo "Failed to clone repository. Exiting."; exit 1; }

echo "Descending into cloned repo..."
sleep 2
cd AllPac/cmd/ || { echo "Failed to change directory. Exiting."; exit 1; }

echo "Ensuring we have up to date dependencies..."
go mod tidy || { echo "Failed to tidy dependencies. Exiting."; exit 1; }
sleep 2

echo "Building binary..."
go build -o ~/.allpac/bin/allpac || { echo "Failed to build binary. Exiting."; exit 1; }
sleep 2

echo "Binary built!"

updater_url="https://git.pixelridgesoftworks.com/PixelRidge-Softworks/Installers/raw/branch/main/allpac/update.sh"
echo "Downloading updater script..."
wget -O ~/.allpac/bin/allpac-updater.sh "$updater_url" || { echo "Failed to download updater script. Exiting."; exit 1; }
sleep 2

echo "Setting updater script permissions..."
chmod u+rwx ~/.allpac/bin/allpac-updater.sh
sleep 2

echo "Detecting your shell and updating the configuration..."

# Determine the shell the user is using
if [[ "$SHELL" == *"bash"* ]]; then
    shell_rc="$HOME/.bashrc"
elif [[ "$SHELL" == *"zsh"* ]]; then
    shell_rc="$HOME/.zshrc"
else
    echo "Unsupported shell. Please manually add the following alias to your shell configuration:"
    echo "alias allpac-update-system='$HOME/.allpac/bin/allpac-updater.sh'"
    exit 1
fi

# Check if the alias already exists in the shell configuration file
if ! grep -q "alias allpac-update-system=" "$shell_rc"; then
    # Alias not found, add it to the shell configuration file
    echo "alias allpac-update-system='$HOME/.allpac/bin/allpac-updater.sh'" >> "$shell_rc"
    echo "Alias added to $shell_rc"
else
    echo "Alias already exists in $shell_rc"
fi

echo "Adding AllPac to the system path for all users..."
echo 'export PATH=$PATH:$HOME/.allpac/bin' | sudo tee -a /etc/profile.d/allpac.sh > /dev/null
sudo chmod +x /etc/profile.d/allpac.sh

echo "Cleaning up..."
cd ../../ || exit
rm -rf AllPac

echo "AllPac setup complete. Please re-login (or restart the shell) to apply the changes."