#!/bin/sh

# --- 1. Deine individuellen Datei-URLs ---
URL_NVIM_INIT="http://DEIN_GITEA/init.lua"
URL_FASTFETCH="http://DEIN_GITEA/fastfetch.jsonc"

echo "🔍 Scanne System (POSIX mode)..."

# --- 2. System-Erkennung (sh-kompatibel) ---
if [ -f /etc/os-release ]; then
    . /etc/os-release
    OS_ID=$ID
else
    OS_ID="unknown"
fi

# --- 3. Voraussetzungen installieren ---
# Wir prüfen erst, welcher Manager da ist
echo "📦 Installiere Pakete für: $OS_ID..."
if command -v sudo >/dev/null 2>&1; then S="sudo"; else S=""; fi

if command -v apt-get >/dev/null 2>&1; then
    $S apt-get update && $S apt-get install -y zsh curl git neovim fastfetch eza
elif command -v pacman >/dev/null 2>&1; then
    $S pacman -Syu --needed --noconfirm zsh curl git neovim fastfetch eza shadow
elif command -v apk >/dev/null 2>&1; then
    $S apk add zsh curl git neovim fastfetch eza shadow ncurses-terminfo-base
elif command -v dnf >/dev/null 2>&1; then
    $S dnf install -y zsh curl git neovim fastfetch eza shadow-utils
fi

# --- 4. Verzeichnisse & Downloads ---
mkdir -p "$HOME/.config/nvim" "$HOME/.config/fastfetch"
curl -fsSL "$URL_NVIM_INIT" -o "$HOME/.config/nvim/init.lua"
curl -fsSL "$URL_FASTFETCH" -o "$HOME/.config/fastfetch/fastfetch.jsonc"

# --- 5. Die dynamische .zshrc Erstellung ---
# Wir nutzen hier 'cat' ohne Bash-Variablen-Tricks
echo "📝 Generiere .zshrc..."

cat <<EOF > "$HOME/.zshrc"
# --- Automatisch generiert am $(date) ---
OS_ID="$OS_ID"

# Zinit Installation
ZINIT_HOME="\$HOME/.local/share/zinit/zinit.git"
if [ ! -d "\$ZINIT_HOME" ]; then
    mkdir -p "\$(dirname "\$ZINIT_HOME")"
    git clone https://github.com/zdharma-continuum/zinit.git "\$ZINIT_HOME"
fi
source "\$ZINIT_HOME/zinit.zsh"

zinit ice depth=1; zinit light romkatv/powerlevel10k
zinit light zsh-users/zsh-syntax-highlighting
zinit light zsh-users/zsh-autosuggestions

# Fastfetch & Aliases
alias l='eza -lagh --icons --group-directories-first'
alias c='clear'
alias x='exit'
(( \$+commands[fastfetch] )) && fastfetch --config \$HOME/.config/fastfetch/fastfetch.jsonc

EOF

# --- 6. Update-Logik (System-spezifisch) ---
if [ "$OS_ID" = "debian" ] || [ "$OS_ID" = "ubuntu" ] || [ "$OS_ID" = "trixie" ]; then
    echo "update_system() { $S apt-get update && $S apt-get upgrade -y; }" >> "$HOME/.zshrc"
elif [ "$OS_ID" = "arch" ] || [ "$OS_ID" = "cachyos" ]; then
    echo "update_system() { $S pacman -Syu --noconfirm; }" >> "$HOME/.zshrc"
elif [ "$OS_ID" = "alpine" ]; then
    echo "update_system() { $S apk update && $S apk upgrade; }" >> "$HOME/.zshrc"
fi
echo "alias u='update_system'" >> "$HOME/.zshrc"

# --- 7. Finale ---
# Prüfen ob ZSH die Default Shell ist (optional)
if [ "$SHELL" != "$(command -v zsh)" ] && [ "$OS_ID" != "termux" ]; then
    $S chsh -s "$(command -v zsh)" "$(whoami)"
fi

echo "✅ Setup fertig! Starte ZSH..."
exec zsh -l