#!/usr/bin/env bash
# =============================================================================
# Local AI Stack — Ubuntu 24.04
# Services: Ollama · Open WebUI · RAG · MCP · ChromaDB · SearXNG
#           Kiwix · Gitea · InvokeAI · Portainer
#
# Usage:
#   ./laptop_full_setup.sh           — interactive setup (answer questions, leave overnight)
#   ./laptop_full_setup.sh --force   — overwrite existing config files too
#
# Asks all questions upfront, then runs everything unattended.
# GPU: Ollama auto-detects VRAM — works with any NVIDIA GPU
# =============================================================================
set -euo pipefail

# ── colours ───────────────────────────────────────────────────────────────────
RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'
CYAN='\033[0;36m'; BOLD='\033[1m'; NC='\033[0m'
info()    { echo -e "${CYAN}[..]${NC}  $*"; }
ok()      { echo -e "${GREEN}[OK]${NC}  $*"; }
warn()    { echo -e "${YELLOW}[!!]${NC}  $*"; }
die()     { echo -e "${RED}[XX]${NC}  $*" >&2; exit 1; }
section() { echo -e "\n${BOLD}━━━  $*  ━━━${NC}"; }

# ── args ──────────────────────────────────────────────────────────────────────
FORCE=false
for arg in "$@"; do [[ "$arg" == "--force" ]] && FORCE=true; done

# ── config ────────────────────────────────────────────────────────────────────
BASE="$HOME/docker/ai-stack"
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
LOCAL_IP=$(ip route get 1.1.1.1 2>/dev/null | grep -oP 'src \K\S+' \
           || hostname -I | awk '{print $1}')
[[ -z "$LOCAL_IP" ]] && read -rp "Enter your LAN IP: " LOCAL_IP

# Models (defaults, may be adjusted below based on VRAM)
EMBED_MODEL="nomic-embed-text"
CHAT_MODEL="qwen2.5:14b"
CODE_MODEL="qwen2.5-coder:7b"
FAST_MODEL="qwen2.5:7b"

# ── detect GPU ────────────────────────────────────────────────────────────────
VRAM_GB=$(nvidia-smi --query-gpu=memory.total --format=csv,noheader,nounits 2>/dev/null \
          | head -1 | awk '{printf "%d", $1/1024}' 2>/dev/null || echo "0")
GPU_NAME=$(nvidia-smi --query-gpu=name --format=csv,noheader 2>/dev/null | head -1 || echo "None")

if   [[ "$VRAM_GB" -ge 14 ]]; then
    CHAT_MODEL="qwen2.5:14b"; CODE_MODEL="qwen2.5-coder:14b"
    GPU_TIER="16GB VRAM — 14B models"
elif [[ "$VRAM_GB" -ge 8 ]]; then
    CHAT_MODEL="qwen2.5:14b"; CODE_MODEL="qwen2.5-coder:7b"
    GPU_TIER="8GB VRAM — 14B chat, 7B code"
elif [[ "$VRAM_GB" -ge 4 ]]; then
    CHAT_MODEL="qwen2.5:7b"; CODE_MODEL="qwen2.5-coder:7b"
    GPU_TIER="6GB VRAM — 7B models"
elif [[ "$VRAM_GB" -gt 0 ]]; then
    CHAT_MODEL="qwen2.5:7b"; CODE_MODEL="qwen2.5-coder:7b"
    GPU_TIER="${VRAM_GB}GB VRAM — 7B models"
else
    CHAT_MODEL="qwen2.5:7b"; CODE_MODEL="qwen2.5-coder:7b"
    GPU_TIER="CPU only — 7B models (slow)"
fi

# ── new vs update ─────────────────────────────────────────────────────────────
IS_UPDATE=false
[[ -f "$BASE/docker-compose.yml" ]] && IS_UPDATE=true

# =============================================================================
#  QUESTIONS UPFRONT — answer everything, then walk away
# =============================================================================
section "Local AI Stack — Setup Wizard"
echo ""
echo -e "  ${BOLD}Answer the questions below, then leave it overnight.${NC}"
echo -e "  Everything will install and download while you sleep."
echo ""
info "Machine : $(hostname)"
info "LAN IP  : $LOCAL_IP"
info "GPU     : ${GPU_NAME} (${VRAM_GB}GB VRAM)"
$IS_UPDATE && warn "Existing install found. Config files kept unless --force is passed."

# ── Q1: Components ────────────────────────────────────────────────────────────
echo ""
echo -e "  ${BOLD}[1/5] What do you want to install?${NC}"
echo ""
echo "  1) Full stack  — AI stack + Kiwix offline library"
echo "  2) AI stack    — Ollama · WebUI · RAG · MCP · ChromaDB · SearXNG · Gitea · InvokeAI · Portainer"
echo "  3) Kiwix only  — Offline Wikipedia / docs (runs standalone)"
echo ""
read -rp "  Choice [1]: " MENU_CHOICE
MENU_CHOICE="${MENU_CHOICE:-1}"
case "$MENU_CHOICE" in
    1) INSTALL_AI=true;  INSTALL_KIWIX=true  ;;
    2) INSTALL_AI=true;  INSTALL_KIWIX=false ;;
    3) INSTALL_AI=false; INSTALL_KIWIX=true  ;;
    *) die "Invalid choice '$MENU_CHOICE' — run again and choose 1, 2, or 3" ;;
esac

# ── Q2: Storage for Ollama models ─────────────────────────────────────────────
OLLAMA_STORAGE="volume"   # "volume" = Docker named volume, else a host path
OLLAMA_HOST_PATH=""

if $INSTALL_AI; then
    echo ""
    echo -e "  ${BOLD}[2/5] Where should Ollama models be stored?${NC}"
    echo "  (Models are large — 5-50GB each. A fast SSD or large HDD is ideal.)"
    echo ""
    echo "  Available mount points with >20GB free:"
    df -h --output=target,avail,fstype 2>/dev/null \
      | awk 'NR>1 && $2~/[0-9]/ {
            val=$2; unit=substr(val,length(val));
            num=substr(val,1,length(val)-1)+0;
            if ((unit=="G" && num>=20) || unit=="T") print "    " $0
        }' | head -10
    echo ""
    echo "  1) Docker volume  (default — stored in /var/lib/docker/volumes/)"
    echo "  2) Custom path    (e.g. /mnt/ssd/ollama or /data/ollama)"
    echo ""
    read -rp "  Choice [1]: " STORAGE_CHOICE
    STORAGE_CHOICE="${STORAGE_CHOICE:-1}"
    if [[ "$STORAGE_CHOICE" == "2" ]]; then
        read -rp "  Enter full path for Ollama models: " OLLAMA_HOST_PATH
        OLLAMA_HOST_PATH="${OLLAMA_HOST_PATH%/}"   # strip trailing slash
        [[ -z "$OLLAMA_HOST_PATH" ]] && die "No path entered."
        OLLAMA_STORAGE="bind"
    fi
fi

# ── Q3: Storage for Kiwix ZIMs ────────────────────────────────────────────────
KIWIX_DIR="$BASE/kiwix"   # default

if $INSTALL_KIWIX; then
    echo ""
    echo -e "  ${BOLD}[3/5] Where should Kiwix ZIM files be stored?${NC}"
    echo "  (ZIMs are large — Wikipedia alone is ~46GB. Total collection ~130GB.)"
    echo ""
    echo "  Available mount points with >50GB free:"
    df -h --output=target,avail,fstype 2>/dev/null \
      | awk 'NR>1 && $2~/[0-9]/ {
            val=$2; unit=substr(val,length(val));
            num=substr(val,1,length(val)-1)+0;
            if ((unit=="G" && num>=50) || unit=="T") print "    " $0
        }' | head -10
    echo ""
    echo "  Default: $KIWIX_DIR"
    read -rp "  Press Enter to use default, or type a different path: " KIWIX_INPUT
    if [[ -n "$KIWIX_INPUT" ]]; then
        KIWIX_DIR="${KIWIX_INPUT%/}"
    fi

    # ── Q4: Download ZIMs now? ─────────────────────────────────────────────────
    echo ""
    echo -e "  ${BOLD}[4/5] Download ZIM files? (offline Wikipedia, Stack Overflow, etc.)${NC}"
    echo "  Downloads run in the background — safe to start now and leave overnight."
    echo "  Total: ~130GB (Wikipedia 46GB, Project Gutenberg 60GB, others smaller)"
    echo ""
    echo "  1) Yes — download all ZIMs overnight (~130GB)"
    echo "  2) Select — choose which ZIMs to download"
    echo "  3) No  — skip for now (run ./kiwix_download.sh later)"
    echo ""
    read -rp "  Choice [3]: " ZIM_CHOICE
    ZIM_CHOICE="${ZIM_CHOICE:-3}"
else
    ZIM_CHOICE="3"
fi

# ── Q4b: Firewall (LAN subnet) ────────────────────────────────────────────────
LAN_SUBNET="192.168.1.0/24"
if command -v ufw &>/dev/null && { [[ ! -f "$BASE/.ufw-done" ]] || $FORCE; }; then
    echo ""
    # Auto-detect likely subnet from current IP
    AUTO_SUBNET=$(echo "$LOCAL_IP" | awk -F. '{print $1"."$2"."$3".0/24"}')
    echo -e "  ${BOLD}[4b] Firewall — allow LAN access to services${NC}"
    read -rp "  LAN subnet [${AUTO_SUBNET}]: " LAN_INPUT
    LAN_SUBNET="${LAN_INPUT:-$AUTO_SUBNET}"
    [[ "$LAN_SUBNET" =~ /[0-9]+$ ]] || LAN_SUBNET="${LAN_SUBNET}/24"
fi

# ── Q5: Pull Ollama models now? ───────────────────────────────────────────────
PULL_MODELS=false
PULL_DEEPSEEK=false

if $INSTALL_AI; then
    echo ""
    echo -e "  ${BOLD}[5/5] Download AI models now?${NC}"
    echo "  GPU detected: ${GPU_NAME} (${VRAM_GB}GB VRAM) → recommended tier: ${GPU_TIER}"
    echo ""
    echo "  Models that will be downloaded:"
    echo "    nomic-embed-text  (~300MB)  — RAG embeddings (required)"
    echo "    ${FAST_MODEL}         (~5GB)   — fast chat"
    echo "    ${CHAT_MODEL}         (~9GB)   — smart chat"
    echo "    ${CODE_MODEL}   (~5GB)   — code assistant"
    echo ""
    read -rp "  Download models now? (~20GB total) [Y/n]: " DO_PULL
    if [[ "${DO_PULL,,}" != "n" ]]; then
        PULL_MODELS=true
        read -rp "  Also download DeepSeek-R1:14b for reasoning? (~9GB extra) [y/N]: " DO_DS
        [[ "${DO_DS,,}" == "y" ]] && PULL_DEEPSEEK=true
    fi
fi

# ── Summary ───────────────────────────────────────────────────────────────────
echo ""
echo -e "${BOLD}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
echo -e "${BOLD}  Setup plan — starting now:${NC}"
echo -e "${BOLD}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
echo ""
$INSTALL_AI    && echo "  ✓ AI stack (Ollama · WebUI · RAG · MCP · Gitea · InvokeAI · Portainer)"
$INSTALL_KIWIX && echo "  ✓ Kiwix offline library"
if $INSTALL_AI; then
    if [[ "$OLLAMA_STORAGE" == "bind" ]]; then
        echo "  ✓ Ollama models → $OLLAMA_HOST_PATH"
    else
        echo "  ✓ Ollama models → Docker volume (default)"
    fi
fi
$INSTALL_KIWIX && echo "  ✓ Kiwix ZIMs   → $KIWIX_DIR"
$PULL_MODELS   && echo "  ✓ Pull models  : embed + ${FAST_MODEL} + ${CHAT_MODEL} + ${CODE_MODEL}${PULL_DEEPSEEK:+ + deepseek-r1:14b}"
[[ "$ZIM_CHOICE" == "1" ]] && echo "  ✓ Download all ZIMs in background (~130GB)"
[[ "$ZIM_CHOICE" == "2" ]] && echo "  ✓ Select ZIMs to download (prompted after stack starts)"
echo ""
read -rp "  Proceed? [Y/n]: " CONFIRM
[[ "${CONFIRM,,}" == "n" ]] && echo "Aborted." && exit 0
echo ""

# ── helper: write only if missing (or --force) ────────────────────────────────
# Usage:  write_if_new /path/to/file << 'EOF' ... EOF
write_if_new() {
    local dest="$1"
    local content; content=$(cat)
    if [[ ! -f "$dest" ]] || $FORCE; then
        printf '%s\n' "$content" > "$dest"
        ok "Wrote $(basename "$dest")"
    else
        info "Kept   $(basename "$dest")  (--force to overwrite)"
    fi
}

# =============================================================================
section "Prerequisites"
# =============================================================================
if ! $IS_UPDATE; then

    # Docker
    if ! command -v docker &>/dev/null; then
        info "Installing Docker..."
        curl -fsSL https://get.docker.com | sh
        sudo usermod -aG docker "$USER"
        ok "Docker installed — log out/in or run: newgrp docker"
    else
        ok "Docker: $(docker --version)"
    fi

    # NVIDIA Container Toolkit
    if command -v nvidia-smi &>/dev/null && \
       ! dpkg -l 2>/dev/null | grep -q nvidia-container-toolkit; then
        info "Installing NVIDIA Container Toolkit..."
        curl -fsSL https://nvidia.github.io/libnvidia-container/gpgkey \
          | sudo gpg --dearmor --yes \
            -o /usr/share/keyrings/nvidia-container-toolkit-keyring.gpg
        curl -fsSL https://nvidia.github.io/libnvidia-container/stable/deb/nvidia-container-toolkit.list \
          | sed 's#deb https://#deb [signed-by=/usr/share/keyrings/nvidia-container-toolkit-keyring.gpg] https://#g' \
          | sudo tee /etc/apt/sources.list.d/nvidia-container-toolkit.list
        sudo apt-get update -qq
        sudo apt-get install -y nvidia-container-toolkit
        sudo nvidia-ctk runtime configure --runtime=docker
        sudo systemctl restart docker
        ok "NVIDIA Container Toolkit installed"
    elif command -v nvidia-smi &>/dev/null; then
        ok "NVIDIA Container Toolkit already present"
    else
        warn "No NVIDIA GPU detected — CPU-only (Ollama will use CPU)"
    fi

    # ripgrep (used by MCP search_code tool)
    if ! command -v rg &>/dev/null; then
        sudo apt-get install -y ripgrep
        ok "ripgrep installed"
    fi

else
    ok "Skipping prereq checks (update mode)"
fi

# =============================================================================
section "Directories"
# =============================================================================
for d in papers repos workspace index searxng invokeai-data invokeai-outputs \
          gitea portainer-data logs; do
    mkdir -p "$BASE/$d"
done
# Kiwix ZIM dir — may be on a different drive
mkdir -p "$KIWIX_DIR"
# Ollama bind-mount dir (if using custom path)
[[ "$OLLAMA_STORAGE" == "bind" ]] && mkdir -p "$OLLAMA_HOST_PATH"
ok "Directories ready"

# =============================================================================
if $INSTALL_AI; then
section "Server Files"
# =============================================================================

# Copy Python servers from repo (always update — they are version-controlled)
cp "$SCRIPT_DIR/server.py"     "$BASE/server.py"     && ok "server.py"
cp "$SCRIPT_DIR/mcp_server.py" "$BASE/mcp_server.py" && ok "mcp_server.py"

# RAG dependencies
cat > "$BASE/requirements.txt" << 'REQ'
fastapi
uvicorn[standard]
httpx
pydantic
chromadb
pypdf
watchdog
python-multipart
REQ
ok "requirements.txt"

# MCP server dependencies
cat > "$BASE/mcp_requirements.txt" << 'REQ'
mcp[cli]
fastapi
uvicorn[standard]
httpx
REQ
ok "mcp_requirements.txt"

fi  # INSTALL_AI

# =============================================================================
if $INSTALL_AI; then
section "SearXNG Config"
# =============================================================================
write_if_new "$BASE/searxng/settings.yml" << SEARXNG
use_default_settings: true
general:
  instance_name: "Local Search"
server:
  secret_key: "$(openssl rand -hex 32)"
  limiter: false
search:
  safe_search: 0
  default_lang: "en"
  formats: [html, json]
SEARXNG

fi  # INSTALL_AI

# =============================================================================
section ".env File"
# =============================================================================
# Never overwrite — this is where users store their tokens
if [[ ! -f "$BASE/.env" ]]; then
    cat > "$BASE/.env" << ENV
# Local AI Stack — API Tokens
# Edit this file, then restart: bash $BASE/start.sh

# Gitea — generate at http://$LOCAL_IP:3001/user/settings/applications
GITEA_TOKEN=your-gitea-token-here

# GitHub — optional, for GitHub API access via MCP
GITHUB_TOKEN=your-github-token-here
ENV
    ok "Created .env — add your tokens before using MCP Gitea/GitHub tools"
else
    info "Kept   .env (never overwritten)"
fi

# =============================================================================
section "Docker Compose"
# =============================================================================
# Build ollama volume line based on storage choice
if [[ "$OLLAMA_STORAGE" == "bind" ]]; then
    OLLAMA_VOLUME_LINE="      - ${OLLAMA_HOST_PATH}:/root/.ollama"
    OLLAMA_VOLUMES_DECL=""
else
    OLLAMA_VOLUME_LINE="      - ollama-models:/root/.ollama"
    OLLAMA_VOLUMES_DECL="  ollama-models:"
fi

# Always written — it's the stack definition and safe to update
cat > "$BASE/docker-compose.yml" << COMPOSE
# Local AI Stack — generated $(date '+%Y-%m-%d')
# Edit \$BASE/.env to add API tokens.
# GPU: OLLAMA_NUM_GPU=999 means "use all available VRAM" — auto-adapts to any GPU.

services:

  # ── Ollama — LLM inference ──────────────────────────────────────────────────
  ollama:
    image: ollama/ollama:latest
    container_name: ollama
    restart: unless-stopped
    ports:
      - "0.0.0.0:11434:11434"
    volumes:
${OLLAMA_VOLUME_LINE}
    environment:
      - OLLAMA_NUM_GPU=999       # use all available VRAM (auto-detects GPU size)
      - OLLAMA_NUM_CTX=8192      # lower to 4096 if you hit OOM
      - OLLAMA_KEEP_ALIVE=24h
      - OLLAMA_MAX_LOADED_MODELS=1
    deploy:
      resources:
        reservations:
          devices:
            - driver: nvidia
              count: all
              capabilities: [gpu]
    healthcheck:
      test: ["CMD", "ollama", "list"]
      interval: 30s
      timeout: 10s
      retries: 5

  # ── Open WebUI — Chat interface ─────────────────────────────────────────────
  open-webui:
    image: ghcr.io/open-webui/open-webui:main
    container_name: open-webui
    restart: unless-stopped
    ports:
      - "0.0.0.0:3000:8080"
    volumes:
      - open-webui-data:/app/backend/data
    environment:
      - OLLAMA_BASE_URL=http://ollama:11434
      - OPENAI_API_BASE_URL=http://rag-server:8001/v1
      - OPENAI_API_KEY=local-rag-key
      - ENABLE_OPENAI_API=true
      - ENABLE_RAG_WEB_SEARCH=true
      - RAG_WEB_SEARCH_ENGINE=searxng
      - SEARXNG_QUERY_URL=http://searxng:8080/search?q=<query>&format=json
      - WEBUI_AUTH=false
    depends_on:
      ollama:
        condition: service_healthy

  # ── ChromaDB — Vector store ─────────────────────────────────────────────────
  chromadb:
    image: chromadb/chroma:latest
    container_name: chromadb
    restart: unless-stopped
    ports:
      - "0.0.0.0:8000:8000"
    volumes:
      - $BASE/index:/chroma/chroma
    environment:
      - IS_PERSISTENT=TRUE
      - ANONYMIZED_TELEMETRY=FALSE

  # ── RAG Server — code-aware retrieval ──────────────────────────────────────
  rag-server:
    image: python:3.11-slim
    container_name: rag-server
    restart: unless-stopped
    ports:
      - "0.0.0.0:8001:8001"
    volumes:
      - $BASE/papers:/papers
      - $BASE/repos:/repos
      - $BASE/index:/index
      - $BASE/server.py:/app/server.py
      - $BASE/requirements.txt:/app/requirements.txt
    working_dir: /app
    environment:
      - OLLAMA_URL=http://ollama:11434
      - CHROMA_URL=http://chromadb:8000
      - EMBED_MODEL=nomic-embed-text
      - CHAT_MODEL=qwen2.5:14b
      - PAPERS_DIR=/papers
      - REPOS_DIR=/repos
    command: >
      bash -c "apt-get update -qq &&
               apt-get install -y --no-install-recommends git &&
               pip install --no-cache-dir -r requirements.txt &&
               uvicorn server:app --host 0.0.0.0 --port 8001"
    depends_on:
      chromadb:
        condition: service_started
      ollama:
        condition: service_healthy

  # ── MCP Server — Claude Code-equivalent tools ───────────────────────────────
  # Connect via: http://$LOCAL_IP:8002/sse
  # Add to Claude Code:  claude mcp add local http://$LOCAL_IP:8002/sse
  mcp-server:
    image: python:3.11-slim
    container_name: mcp-server
    restart: unless-stopped
    ports:
      - "0.0.0.0:8002:8002"
    volumes:
      - $BASE/workspace:/workspace
      - $BASE/repos:/repos
      - $BASE/mcp_server.py:/app/mcp_server.py
      - $BASE/mcp_requirements.txt:/app/mcp_requirements.txt
    working_dir: /app
    env_file: $BASE/.env
    environment:
      - WORKSPACE_DIR=/workspace
      - REPOS_DIR=/repos
      - GITEA_URL=http://gitea:3000
      - RAG_URL=http://rag-server:8001
    command: >
      bash -c "apt-get update -qq &&
               apt-get install -y --no-install-recommends git ripgrep &&
               pip install --no-cache-dir -r mcp_requirements.txt &&
               python mcp_server.py"
    depends_on:
      - rag-server

  # ── SearXNG — Private web search ───────────────────────────────────────────
  searxng:
    image: searxng/searxng:latest
    container_name: searxng
    restart: unless-stopped
    ports:
      - "0.0.0.0:8888:8080"
    volumes:
      - $BASE/searxng:/etc/searxng
    cap_drop: [ALL]
    cap_add: [CHOWN, SETGID, SETUID]

  # ── Kiwix — Offline Wikipedia/docs ─────────────────────────────────────────
  kiwix:
    image: ghcr.io/kiwix/kiwix-serve:latest
    container_name: kiwix
    restart: unless-stopped
    ports:
      - "0.0.0.0:8181:8080"
    volumes:
      - $KIWIX_DIR:/data
    command: "*.zim"

  # ── Gitea — Self-hosted Git ─────────────────────────────────────────────────
  gitea:
    image: gitea/gitea:latest
    container_name: gitea
    restart: unless-stopped
    ports:
      - "0.0.0.0:3001:3000"
      - "0.0.0.0:2222:22"
    volumes:
      - $BASE/gitea:/data
      - /etc/timezone:/etc/timezone:ro
      - /etc/localtime:/etc/localtime:ro
    environment:
      - USER_UID=1000
      - USER_GID=1000
      - GITEA__database__DB_TYPE=sqlite3
      - GITEA__database__PATH=/data/gitea/gitea.db
      - GITEA__webhook__ALLOWED_HOST_LIST=rag-server,mcp-server

  # ── InvokeAI — Image generation ────────────────────────────────────────────
  invokeai:
    image: ghcr.io/invoke-ai/invokeai:latest
    container_name: invokeai
    restart: unless-stopped
    ports:
      - "0.0.0.0:9090:9090"
    volumes:
      - invokeai-models:/invokeai/models
      - $BASE/invokeai-outputs:/invokeai/outputs
      - $BASE/invokeai-data:/invokeai/databases
    environment:
      - INVOKEAI_HOST=0.0.0.0
      - INVOKEAI_PORT=9090
      - INVOKEAI_PRECISION=float16
    deploy:
      resources:
        reservations:
          devices:
            - driver: nvidia
              count: all
              capabilities: [gpu]

  # ── Portainer — Docker management UI ───────────────────────────────────────
  portainer:
    image: portainer/portainer-ce:latest
    container_name: portainer
    restart: unless-stopped
    ports:
      - "0.0.0.0:9000:9000"
      - "0.0.0.0:9443:9443"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - $BASE/portainer-data:/data

volumes:
${OLLAMA_VOLUMES_DECL}
  open-webui-data:
  invokeai-models:
COMPOSE
ok "docker-compose.yml written"

# =============================================================================
section "Firewall (UFW)"
# =============================================================================
if command -v ufw &>/dev/null; then
    if [[ ! -f "$BASE/.ufw-done" ]] || $FORCE; then
        for port_comment in \
            "3000:Open WebUI" "11434:Ollama" "8001:RAG Server" \
            "8002:MCP Server" "8000:ChromaDB" "8888:SearXNG" \
            "8181:Kiwix" "3001:Gitea" "2222:Gitea SSH" \
            "9090:InvokeAI" "9000:Portainer" "9443:Portainer S"; do
            port="${port_comment%%:*}"
            comment="${port_comment##*:}"
            sudo ufw allow from "$LAN_SUBNET" to any port "$port" proto tcp \
                comment "$comment" > /dev/null
        done
        sudo ufw reload > /dev/null
        ok "UFW rules set for $LAN_SUBNET"
        touch "$BASE/.ufw-done"
    else
        info "UFW rules already set (--force to redo)"
    fi
else
    warn "ufw not found — skipping firewall config"
fi

# =============================================================================
section "Helper Scripts"
# =============================================================================

cat > "$BASE/start.sh" << STARTSH
#!/bin/bash
cd "$BASE"
echo "Pulling latest images..."
docker compose pull --quiet
docker compose up -d
echo ""
echo "  Open WebUI  →  http://$LOCAL_IP:3000"
echo "  InvokeAI    →  http://$LOCAL_IP:9090"
echo "  SearXNG     →  http://$LOCAL_IP:8888"
echo "  Kiwix       →  http://$LOCAL_IP:8181"
echo "  Gitea       →  http://$LOCAL_IP:3001"
echo "  RAG Health  →  http://$LOCAL_IP:8001/health"
echo "  MCP SSE     →  http://$LOCAL_IP:8002/sse"
echo "  Portainer   →  https://$LOCAL_IP:9443"
echo ""
echo "  Workspace   →  $BASE/workspace/"
echo "  Drop PDFs   →  $BASE/papers/"
echo "  Images out  →  $BASE/invokeai-outputs/"
echo ""
echo "  Claude Code MCP:"
echo "    claude mcp add local http://$LOCAL_IP:8002/sse"
STARTSH
chmod +x "$BASE/start.sh"
ok "start.sh"

cat > "$BASE/stop.sh" << STOPSH
#!/bin/bash
cd "$BASE"
docker compose down
echo "All services stopped."
STOPSH
chmod +x "$BASE/stop.sh"
ok "stop.sh"

cat > "$BASE/status.sh" << 'STATUSSH'
#!/bin/bash
echo "=== GPU ==="
nvidia-smi --query-gpu=name,temperature.gpu,utilization.gpu,memory.used,memory.total \
    --format=csv,noheader 2>/dev/null || echo "(no GPU)"

echo ""
echo "=== Containers ==="
docker ps --format "table {{.Names}}\t{{.Status}}\t{{.Ports}}"

echo ""
echo "=== Ollama models ==="
docker exec ollama ollama ps 2>/dev/null || echo "(not running)"

echo ""
echo "=== RAG ==="
curl -s http://localhost:8001/health | python3 -m json.tool 2>/dev/null \
    || echo "(not running)"

echo ""
echo "=== MCP ==="
curl -s http://localhost:8002/health 2>/dev/null || echo "(not running)"

echo ""
echo "=== Disk ==="
du -sh ~/docker/ai-stack/*/  2>/dev/null
STATUSSH
chmod +x "$BASE/status.sh"
ok "status.sh"

cat > "$BASE/pull-models.sh" << PULLSH
#!/bin/bash
echo "Waiting for Ollama..."
until docker exec ollama ollama list &>/dev/null; do sleep 3; done
echo "Ollama ready."

echo ""
echo "Pulling embed model (needed for RAG)..."
docker exec ollama ollama pull $EMBED_MODEL

echo "Pulling fast chat model (~5GB)..."
docker exec ollama ollama pull $FAST_MODEL

echo "Pulling smart chat model (~9GB)..."
docker exec ollama ollama pull $CHAT_MODEL

echo "Pulling code model (~5GB)..."
docker exec ollama ollama pull $CODE_MODEL

echo ""
echo "Done. Models:"
docker exec ollama ollama list
PULLSH
chmod +x "$BASE/pull-models.sh"
ok "pull-models.sh"

write_if_new "$BASE/Caddyfile.example" << CADDY
# Caddy2 reverse proxy — copy to your proxy machine
# Replace yourdomain.com with your actual domain

webui.yourdomain.com    { reverse_proxy $(hostname).local:3000 }
invokeai.yourdomain.com { reverse_proxy $(hostname).local:9090 }
search.yourdomain.com   { reverse_proxy $(hostname).local:8888 }
git.yourdomain.com      { reverse_proxy $(hostname).local:3001 }
kiwix.yourdomain.com    { reverse_proxy $(hostname).local:8181 }
rag.yourdomain.com      { reverse_proxy $(hostname).local:8001 }
mcp.yourdomain.com      { reverse_proxy $(hostname).local:8002 }
portainer.yourdomain.com {
    reverse_proxy https://$(hostname).local:9443 {
        transport http { tls_insecure_skip_verify }
    }
}
CADDY

# =============================================================================
section "Systemd Auto-Start"
# =============================================================================
sudo tee /etc/systemd/system/local-ai.service > /dev/null << SYSD
[Unit]
Description=Local AI Stack
After=docker.service network-online.target
Requires=docker.service

[Service]
Type=oneshot
RemainAfterExit=yes
User=$USER
WorkingDirectory=$BASE
ExecStart=/bin/bash $BASE/start.sh
ExecStop=/bin/bash $BASE/stop.sh
TimeoutStartSec=300

[Install]
WantedBy=multi-user.target
SYSD
sudo systemctl daemon-reload
sudo systemctl enable local-ai.service
ok "Systemd service enabled (local-ai.service)"

# =============================================================================
section "Starting Stack"
# =============================================================================
cd "$BASE"
info "Pulling images (this takes a few minutes on first run)..."

COMPOSE_SERVICES=""
$INSTALL_AI    && COMPOSE_SERVICES+=" ollama open-webui chromadb rag-server mcp-server searxng gitea invokeai portainer"
$INSTALL_KIWIX && COMPOSE_SERVICES+=" kiwix"

# shellcheck disable=SC2086
docker compose pull --quiet $COMPOSE_SERVICES
# shellcheck disable=SC2086
docker compose up -d $COMPOSE_SERVICES
ok "Stack started"

# ── Pull Ollama models (answer was captured upfront) ─────────────────────────
if $INSTALL_AI && $PULL_MODELS; then
    section "Pulling Ollama Models"
    info "Waiting for Ollama to be ready..."
    until docker exec ollama ollama list &>/dev/null; do sleep 3; done
    ok "Ollama ready."

    info "Pulling embed model (required for RAG)..."
    docker exec ollama ollama pull "$EMBED_MODEL"

    info "Pulling fast chat model..."
    docker exec ollama ollama pull "$FAST_MODEL"

    info "Pulling smart chat model..."
    docker exec ollama ollama pull "$CHAT_MODEL"

    info "Pulling code model..."
    docker exec ollama ollama pull "$CODE_MODEL"

    if $PULL_DEEPSEEK; then
        info "Pulling DeepSeek-R1:14b (reasoning)..."
        docker exec ollama ollama pull deepseek-r1:14b
    fi

    ok "All models pulled."
    echo ""
    docker exec ollama ollama list
elif $INSTALL_AI; then
    info "Skipping model pull — run later: bash $BASE/pull-models.sh"
fi

# ── Start ZIM downloads (answer was captured upfront) ────────────────────────
if $INSTALL_KIWIX && [[ "$ZIM_CHOICE" != "3" ]]; then
    section "Starting ZIM Downloads"
    LOG="$BASE/logs/kiwix-download.log"
    mkdir -p "$(dirname "$LOG")"

    info "Checking mirrors for latest ZIM filenames..."

    MIRROR="https://ftp.fau.de/kiwix/zim"
    MIRROR2="https://download.kiwix.org/zim"

    latest_zim() {
        local base_url="$1" pattern="$2"
        curl -s "$base_url/" | grep -oP "${pattern}_[0-9-]+\.zim" | sort -u | tail -1
    }

    dl_zim() {
        local cat="$1" file="$2" desc="$3" mirror="${4:-$MIRROR}"
        local dest="$KIWIX_DIR/$file"
        if [[ -z "$file" ]]; then warn "Could not find $desc — skipping"; return; fi
        if [[ -f "$dest" ]]; then ok "$desc already downloaded"; return; fi
        info "Starting: $desc"
        nohup wget -c "$mirror/$cat/$file" -O "$dest" >> "$LOG" 2>&1 &
        echo $! >> "$KIWIX_DIR/.download_pids"
        ok "Download started (PID $!) — $desc"
    }

    WIKI=$(latest_zim "$MIRROR/wikipedia"    "wikipedia_en_all_nopic")
    SO=$(latest_zim   "$MIRROR/stack_exchange" "stackoverflow.com_en_all")
    ARCH=$(latest_zim "$MIRROR/other"        "archlinux_en_all_maxi")
    WIKT=$(latest_zim "$MIRROR/wiktionary"   "wiktionary_en_all_nopic")
    WIKB=$(latest_zim "$MIRROR/wikibooks"    "wikibooks_en_all_nopic")
    WIKS=$(latest_zim "$MIRROR/wikisource"   "wikisource_en_all_nopic")
    WIKV=$(latest_zim "$MIRROR/wikivoyage"   "wikivoyage_en_all_nopic")
    WIKUNI=$(latest_zim "$MIRROR/wikiversity" "wikiversity_en_all_nopic")
    WIKNEWS=$(latest_zim "$MIRROR/wikinews"  "wikinews_en_all_nopic")
    WIKQ=$(latest_zim "$MIRROR/wikiquote"    "wikiquote_en_all_nopic")
    VIKIDIA=$(latest_zim "$MIRROR/vikidia"   "vikidia_en_all_nopic")
    TED=$(latest_zim   "$MIRROR/ted"         "ted_mul_youth")
    PHET=$(latest_zim  "$MIRROR/phet"        "phet_en_all")
    DEVDOCS=$(latest_zim "$MIRROR/devdocs"   "devdocs_en_zig")
    FCC=$(latest_zim   "$MIRROR/freecodecamp" "freecodecamp_en_all")
    IFIX=$(latest_zim  "$MIRROR/ifixit"      "ifixit_en_all")
    LIBRE=$(latest_zim "$MIRROR/libretexts"  "libretexts.org_en_workforce")
    GUT=$(latest_zim   "$MIRROR2/gutenberg"  "gutenberg_en_all")

    if [[ "$ZIM_CHOICE" == "2" ]]; then
        # Let user select which ZIMs
        echo ""
        echo "  Select ZIMs to download (enter numbers separated by spaces):"
        echo "  1)  Wikipedia          ~46GB  ${WIKI:-NOT FOUND}"
        echo "  2)  Stack Overflow     ~3GB   ${SO:-NOT FOUND}"
        echo "  3)  Arch Linux Wiki    ~30MB  ${ARCH:-NOT FOUND}"
        echo "  4)  Wiktionary         ~2GB   ${WIKT:-NOT FOUND}"
        echo "  5)  Wikibooks          ~500MB ${WIKB:-NOT FOUND}"
        echo "  6)  Wikisource         ~4GB   ${WIKS:-NOT FOUND}"
        echo "  7)  Wikivoyage         ~200MB ${WIKV:-NOT FOUND}"
        echo "  8)  Wikiversity        ~500MB ${WIKUNI:-NOT FOUND}"
        echo "  9)  WikiNews           ~300MB ${WIKNEWS:-NOT FOUND}"
        echo "  10) Wikiquote          ~300MB ${WIKQ:-NOT FOUND}"
        echo "  11) Vikidia (kids K-8) ~66MB  ${VIKIDIA:-NOT FOUND}"
        echo "  12) TED Talks          ~5GB   ${TED:-NOT FOUND}"
        echo "  13) PhET Simulations   ~500MB ${PHET:-NOT FOUND}"
        echo "  14) DevDocs            ~1GB   ${DEVDOCS:-NOT FOUND}"
        echo "  15) FreeCodeCamp       ~small ${FCC:-NOT FOUND}"
        echo "  16) iFixit             ~2GB   ${IFIX:-NOT FOUND}"
        echo "  17) LibreTexts         ~varies ${LIBRE:-NOT FOUND}"
        echo "  18) Project Gutenberg  ~60GB  ${GUT:-NOT FOUND}"
        echo ""
        read -rp "  Your choices (e.g. 1 2 3): " ZIM_PICKS
        rm -f "$KIWIX_DIR/.download_pids"
        for n in $ZIM_PICKS; do
            case "$n" in
                1)  dl_zim "wikipedia"     "$WIKI"    "Wikipedia" ;;
                2)  dl_zim "stack_exchange" "$SO"     "Stack Overflow" ;;
                3)  dl_zim "other"         "$ARCH"    "Arch Linux Wiki" ;;
                4)  dl_zim "wiktionary"    "$WIKT"    "Wiktionary" ;;
                5)  dl_zim "wikibooks"     "$WIKB"    "Wikibooks" ;;
                6)  dl_zim "wikisource"    "$WIKS"    "Wikisource" ;;
                7)  dl_zim "wikivoyage"    "$WIKV"    "Wikivoyage" ;;
                8)  dl_zim "wikiversity"   "$WIKUNI"  "Wikiversity" ;;
                9)  dl_zim "wikinews"      "$WIKNEWS" "WikiNews" ;;
                10) dl_zim "wikiquote"     "$WIKQ"    "Wikiquote" ;;
                11) dl_zim "vikidia"       "$VIKIDIA" "Vikidia (kids K-8)" ;;
                12) dl_zim "ted"           "$TED"     "TED Talks" ;;
                13) dl_zim "phet"          "$PHET"    "PhET Simulations" ;;
                14) dl_zim "devdocs"       "$DEVDOCS" "DevDocs" ;;
                15) dl_zim "freecodecamp"  "$FCC"     "FreeCodeCamp" ;;
                16) dl_zim "ifixit"        "$IFIX"    "iFixit" ;;
                17) dl_zim "libretexts"    "$LIBRE"   "LibreTexts" ;;
                18) dl_zim "gutenberg"     "$GUT"     "Project Gutenberg" "$MIRROR2" ;;
            esac
        done
    else
        # Download all
        rm -f "$KIWIX_DIR/.download_pids"
        dl_zim "wikipedia"      "$WIKI"    "Wikipedia"
        dl_zim "stack_exchange" "$SO"      "Stack Overflow"
        dl_zim "other"          "$ARCH"    "Arch Linux Wiki"
        dl_zim "wiktionary"     "$WIKT"    "Wiktionary"
        dl_zim "wikibooks"      "$WIKB"    "Wikibooks"
        dl_zim "wikisource"     "$WIKS"    "Wikisource"
        dl_zim "wikivoyage"     "$WIKV"    "Wikivoyage"
        dl_zim "wikiversity"    "$WIKUNI"  "Wikiversity"
        dl_zim "wikinews"       "$WIKNEWS" "WikiNews"
        dl_zim "wikiquote"      "$WIKQ"    "Wikiquote"
        dl_zim "vikidia"        "$VIKIDIA" "Vikidia (kids K-8)"
        dl_zim "ted"            "$TED"     "TED Talks"
        dl_zim "phet"           "$PHET"    "PhET Simulations"
        dl_zim "devdocs"        "$DEVDOCS" "DevDocs"
        dl_zim "freecodecamp"   "$FCC"     "FreeCodeCamp"
        dl_zim "ifixit"         "$IFIX"    "iFixit"
        dl_zim "libretexts"     "$LIBRE"   "LibreTexts"
        dl_zim "gutenberg"      "$GUT"     "Project Gutenberg" "$MIRROR2"
    fi
    ok "ZIM downloads running in background — monitor: tail -f $LOG"
fi

# =============================================================================
echo ""
echo -e "${GREEN}${BOLD}━━━  Done!  ━━━${NC}"
echo ""
if $INSTALL_AI; then
    echo -e "  ${CYAN}Open WebUI${NC}   →  http://$LOCAL_IP:3000"
    echo -e "  ${CYAN}InvokeAI${NC}     →  http://$LOCAL_IP:9090"
    echo -e "  ${CYAN}SearXNG${NC}      →  http://$LOCAL_IP:8888"
    echo -e "  ${CYAN}Gitea${NC}        →  http://$LOCAL_IP:3001"
    echo -e "  ${CYAN}RAG Health${NC}   →  http://$LOCAL_IP:8001/health"
    echo -e "  ${CYAN}MCP SSE${NC}      →  http://$LOCAL_IP:8002/sse"
    echo -e "  ${CYAN}Portainer${NC}    →  https://$LOCAL_IP:9443"
fi
if $INSTALL_KIWIX; then
    echo -e "  ${CYAN}Kiwix${NC}        →  http://$LOCAL_IP:8181"
fi
echo ""
if $INSTALL_AI; then
    echo -e "  ${YELLOW}Add MCP to Claude Code:${NC}"
    echo    "    claude mcp add local http://$LOCAL_IP:8002/sse"
    echo ""
    echo -e "  ${YELLOW}Add API tokens to:${NC}  $BASE/.env"
    echo -e "  ${YELLOW}Drop PDFs into:${NC}     $BASE/papers/"
    echo -e "  ${YELLOW}Your workspace:${NC}     $BASE/workspace/"
fi
if $INSTALL_KIWIX && [[ "$ZIM_CHOICE" == "3" ]]; then
    echo -e "  ${YELLOW}ZIM downloads:${NC}      ./kiwix_download.sh  (not started)"
elif $INSTALL_KIWIX; then
    echo -e "  ${YELLOW}ZIM progress:${NC}       tail -f $BASE/logs/kiwix-download.log"
    echo -e "  ${YELLOW}ZIM location:${NC}       $KIWIX_DIR/"
fi
echo ""
$IS_UPDATE && echo -e "  ${GREEN}Update complete.${NC}" \
           || echo -e "  ${GREEN}Fresh install complete.${NC}"
echo ""