#!/usr/bin/env bash
set -euo pipefail

echo "🔧 Ollama Linux bootstrap — starting"

# Load environment (MODEL_ROOT, OLLAMA_MODELS)
# Temporarily disable "nounset" when sourcing user shell files to avoid
# failures from system /etc/bashrc referencing undefined vars like PS1.
if [ -f "$HOME/.bashrc" ]; then
  set +u
  # shellcheck disable=SC1091
  source "$HOME/.bashrc" || true
  set -u
fi

: "${OLLAMA_MODELS:=$HOME/models/ollama}"
mkdir -p "$OLLAMA_MODELS"

if command -v ollama >/dev/null 2>&1; then
  echo "✅ ollama already installed: $(ollama version 2>/dev/null || echo 'unknown')"
else
  echo "ℹ️  Attempting to install ollama on Linux"
  if command -v apt-get >/dev/null 2>&1; then
    echo "Using apt to install prerequisites..."
    sudo apt-get update -y || true
    sudo apt-get install -y ca-certificates curl gnupg lsb-release || true
    echo "⚠️  Please follow the official ollama Linux install instructions if a package is not available: https://ollama.com/docs/install"
    echo "If you have a .deb from Ollama, install it with: sudo dpkg -i <file.deb>"
  elif command -v dnf >/dev/null 2>&1; then
    echo "Using dnf; please refer to Ollama docs for distro-specific instructions: https://ollama.com/docs/install"
  else
    echo "⚠️  Could not detect package manager. Please install ollama manually. See: https://ollama.com/docs/install"
  fi
fi

echo "📁 Ensuring model directory exists: $OLLAMA_MODELS"
mkdir -p "$OLLAMA_MODELS"

echo "✅ Linux Ollama bootstrap complete."
echo "Next steps: run scripts/ollama_tmux.sh to start the server in tmux, and place models under $OLLAMA_MODELS"