#!/bin/bash

# Step 0. Detect the OS
if [[ "$OSTYPE" == "darwin"* ]]; then
    OS="macos"
elif [[ -f /etc/os-release ]]; then
    # shellcheck disable=SC1091
    . /etc/os-release
    case "$ID" in
        ubuntu|pop|linuxmint|zorin|elementary|kdeneon)
            OS="ubuntu"
            ;;
        arch|manjaro|endeavouros|garuda|artix)
            OS="arch"
            ;;
        *)
            err "Unsupported Linux distribution: $ID"
            exit 1
            ;;
    esac
else
    err "Cannot determine OS."
    exit 1
fi

echo "🔎 Determined OS: $OS"

# Step 1: Install Neovim 
if [[ $OS == "macos" ]]; then
    brew install neovim 
elif [[ $OS == "ubuntu" ]]; then
    sudo apt install neovim -y
elif [[ $OS == "arch" ]]; then
    sudo pacman -Sy --noconfirm neovim xclip wl-clipboard
fi

echo "✅ Neovim installed"

# Step 2: Create the Neovim config directory
CONFIG_DIR="$HOME/.config/nvim"
CONFIG="$CONFIG_DIR/init.lua"
mkdir -p $CONFIG_DIR

# Step 3: Write your custom init.lua configuration
cat <<EOF > $CONFIG
vim.cmd("set expandtab")
vim.cmd("set tabstop=4")
vim.cmd("set softtabstop=4")
vim.cmd("set shiftwidth=4")
vim.cmd("set number relativenumber")
vim.cmd("highlight Normal guibg=transparent")
vim.opt.clipboard = "unnamedplus"
-- Clipboard alternative fix
vim.g.mapleader = " "
vim.keymap.set({"n", "v"}, "<leader>y", "\"+y")
vim.keymap.set({"n", "v"}, "<leader>p", "\"+p")
-- Moving lines up and down
vim.keymap.set({"n", "v"}, "<leader>u", ":m -2<Enter>")
vim.keymap.set({"n", "v"}, "<leader>d", ":m +1<Enter>")
EOF
echo "✅ Config written ($CONFIG)"

# Step 4: Notify user of success
echo "All done! You can now open Neovim with the 'nvim' command"