#!/usr/bin/env bash
# Usage: scripts/setup-linux-deb.sh
# Description: Installs build dependencies for Debian-based systems (Ubuntu, Zorin, etc.)

set -euo pipefail

echo "🚀 Starting Basic-Book-Builder Setup..."

# 0. WARNING Message
echo "⚠️ WARNING: This script is about install APT packages to your system."
echo "   Please review the package list carefully before proceeding."
echo "   The following packages will be installed and require SUDO permissions:"
echo "   - make, jq, yq, wget, curl, tar, git, rsync"
echo "   - texlive, texlive-xetex, texlive-latex-extra, texlive-fonts-recommended, texlive-fonts-extra, lmodern"
echo "   - pandoc"
echo "   - obsidian"
echo "   - zotero"
echo ""
read -p "Press Enter to continue or Ctrl+C to cancel..."

# 1. Update package lists
sudo apt update

# 2. Install Core Utilities
echo "📦 Installing core utilities (make, jq, yq, etc.)..."
sudo apt install -y make jq yq wget curl tar git rsync

# 3. Install TeX Live Stack
echo "📑 Installing TeX Live stack (this may take a while)..."
sudo apt install -y \
    texlive \
    texlive-xetex \
    texlive-latex-extra \
    texlive-fonts-recommended \
    texlive-fonts-extra \
    lmodern

# 4. Install Pandoc (Specific Version)
PANDOC_VER="3.8.2.1"
if ! command -v pandoc &> /dev/null || [[ $(pandoc --version | head -n1) != *"$PANDOC_VER"* ]]; then
    echo "📥 Downloading and installing Pandoc v$PANDOC_VER..."
    PANDOC_DEB="pandoc-$PANDOC_VER-1-amd64.deb"
    wget "https://github.com/jgm/pandoc/releases/download/$PANDOC_VER/$PANDOC_DEB"
    sudo apt install -y "./$PANDOC_DEB"
    rm "$PANDOC_DEB"
else
    echo "✅ Pandoc $PANDOC_VER is already installed."
fi

# 5. MathJax Setup (Local assets for HTML build)
MATHJAX_DIR="lib/mathjax"
if [ ! -d "$MATHJAX_DIR" ]; then
    echo "🔢 Setting up MathJax..."
    mkdir -p "$MATHJAX_DIR"
    wget https://registry.npmjs.org/mathjax/-/mathjax-3.2.2.tgz
    tar xzf mathjax-3.2.2.tgz
    mv package/es5/* "$MATHJAX_DIR/"
    rm -rf package mathjax-3.2.2.tgz
else
    echo "✅ MathJax already present in $MATHJAX_DIR."
fi

# 6. Scaffolding Build Directories
echo "📂 Creating project directory structure..."
mkdir -p build/pdf build/html build/latex build/epub build/md
mkdir -p scripts/tmp
mkdir -p lib/img lib/diag


# 7. Obsidian Setup

# Check if obsidian is already installed
if ! command -v obsidian &> /dev/null; then
    echo "📦 Installing Obsidian..."
    wget -O scripts/tmp/obsidian_1.9.14_amd64.deb https://github.com/obsidianmd/obsidian-releases/releases/download/v1.9.14/obsidian_1.9.14_amd64.deb
    sudo apt install -y ./scripts/tmp/obsidian_1.9.14_amd64.deb
    rm scripts/tmp/obsidian_1.9.14_amd64.deb
    echo "✅ Obsidian installed successfully."
else
    echo "✅ Obsidian is already installed."
fi


# 8. Zotero Setup
echo "📦 Installing Zotero..."

sudo mkdir -p /usr/share/keyrings

# Install key (direct binary key, no gpg needed)

# Check if zotero is already installed
if ! command -v zotero &> /dev/null; then
    echo "📥 Downloading and installing Zotero..."

    curl -sL https://raw.githubusercontent.com/retorquere/zotero-deb/master/install.sh | sudo bash -s -- -m sources

    sudo apt update
    sudo apt install -y zotero

    echo "✅ Zotero installed successfully."
else
    echo "✅ Zotero is already installed."
fi





# 9. Optional Tools (Checks if they are installed, otherwise prompts)
# echo "🔍 Checking for optional tools..."
# for tool in foliate calibre epubcheck; do
#     if ! command -v $tool &> /dev/null; then
#         echo "💡 Tip: You might want to 'sudo apt install $tool' for better EPub testing."
#     fi
# done




echo "---------------------------------------------------"
echo "🎉 Setup Complete!"
echo "👉 To verify your setup, try running: make pdf"