#!/usr/bin/env bash
# ============================================================================
# BLACKROAD OS, INC. - PROPRIETARY AND CONFIDENTIAL
# Copyright (c) 2025-2026 BlackRoad OS, Inc. All Rights Reserved.
# ============================================================================
# Universal BlackRoad Agent CLI
# Creates CLI commands for any Ollama model
# Usage: blackroad-agent <model-name> [message]

source "$HOME/.blackroad/config/nodes.sh" 2>/dev/null || true

# Find first available Ollama
find_ollama_url() {
  if curl -sf --connect-timeout 1 "http://localhost:11434/api/tags" &>/dev/null; then
    echo "http://localhost:11434"; return 0
  fi
  for node in cecilia lucidia alice; do
    local ip="${NODE_IP[$node]:-}"
    [[ -z "$ip" ]] && continue
    if curl -sf --connect-timeout 2 "http://${ip}:11434/api/tags" &>/dev/null; then
      echo "http://${ip}:11434"; return 0
    fi
  done
  echo "http://localhost:11434"
}

OLLAMA_URL=$(find_ollama_url)

# Detect agent name from command name or first arg
SCRIPT_NAME=$(basename "$0")
if [ "$SCRIPT_NAME" = "blackroad-agent" ]; then
  AGENT_NAME="$1"
  shift
else
  AGENT_NAME="$SCRIPT_NAME"
fi

# Normalize agent name (capitalize first letter for Ollama model name)
MODEL_NAME="$(echo ${AGENT_NAME:0:1} | tr '[:lower:]' '[:upper:]')${AGENT_NAME:1}:latest"

# Agent colors (hash-based for consistency)
get_agent_color() {
  local name="$1"
  local colors=("198" "214" "39" "82" "141" "208" "51" "226" "201" "45")
  local hash=$(echo -n "$name" | md5 2>/dev/null | cut -c1-2 || echo -n "$name" | md5sum 2>/dev/null | cut -c1-2 || echo "aa")
  local idx=$((16#$hash % ${#colors[@]}))
  echo "${colors[$idx]}"
}

COLOR_CODE=$(get_agent_color "$AGENT_NAME")
AGENT_COLOR="\033[38;5;${COLOR_CODE}m"
GRAY='\033[38;5;245m'
BLUE='\033[38;5;39m'
GREEN='\033[38;5;82m'
RESET='\033[0m'

# Header
show_header() {
  local upper_name=$(echo "$AGENT_NAME" | tr '[:lower:]' '[:upper:]')
  echo -e "${AGENT_COLOR}╔═══════════════════════════════════════════════════════════╗${RESET}"
  echo -e "${AGENT_COLOR}║${RESET}  ◆ ${AGENT_COLOR}${upper_name}${RESET} ${GRAY}· BlackRoad OS Agent${RESET}"
  echo -e "${AGENT_COLOR}╚═══════════════════════════════════════════════════════════╝${RESET}"
}

# Check Ollama
check_ollama() {
  curl -s --connect-timeout 1 "$OLLAMA_URL/api/tags" > /dev/null 2>&1
}

# Check if model exists
check_model() {
  ollama list 2>/dev/null | grep -qi "^${AGENT_NAME}"
}

# Chat
chat() {
  local message="$1"
  response=$(curl -s "$OLLAMA_URL/api/generate" \
    -d "$(jq -n --arg m "$MODEL_NAME" --arg p "$message" '{model: $m, prompt: $p, stream: false}')" 2>/dev/null)

  if [ $? -ne 0 ] || [ -z "$response" ]; then
    echo -e "${AGENT_COLOR}[error]${RESET} Could not reach Ollama"
    return 1
  fi

  local text=$(echo "$response" | jq -r '.response // empty')
  if [ -n "$text" ]; then
    echo -e "${GREEN}[local · ollama]${RESET}"
    echo -e "${AGENT_COLOR}${AGENT_NAME^}:${RESET} $text"
  else
    echo -e "${AGENT_COLOR}[no response]${RESET}"
  fi
}

# Status
status() {
  echo -e "${GRAY}Agent:${RESET} $AGENT_NAME"
  echo -e "${GRAY}Model:${RESET} $MODEL_NAME"
  if check_ollama; then
    echo -e "${GREEN}●${RESET} Ollama running"
    if check_model; then
      echo -e "${GREEN}●${RESET} Model available"
      ollama list 2>/dev/null | grep -i "^${AGENT_NAME}" | head -1
    else
      echo -e "${AGENT_COLOR}○${RESET} Model not found"
    fi
  else
    echo -e "${AGENT_COLOR}○${RESET} Ollama offline"
  fi
}

# Help
if [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
  show_header
  echo -e "${GRAY}Usage:${RESET}"
  echo "  $AGENT_NAME [message]     Send a message"
  echo "  $AGENT_NAME               Interactive mode"
  echo "  $AGENT_NAME --status      Show agent status"
  echo ""
  echo -e "${GRAY}Available agents:${RESET}"
  ollama list 2>/dev/null | grep -v "^NAME" | awk '{print "  " $1}' | head -20
  exit 0
fi

if [ "$1" = "--status" ] || [ "$1" = "-s" ]; then
  show_header
  status
  exit 0
fi

# One-shot
if [ -n "$1" ]; then
  show_header
  echo -e "${BLUE}You:${RESET} $*"
  echo ""
  chat "$*"
  exit 0
fi

# Interactive
show_header
echo -e "${GRAY}Type your message (Ctrl+C to exit)${RESET}"
if check_ollama && check_model; then
  echo -e "${GREEN}●${RESET} ${GRAY}$MODEL_NAME ready${RESET}"
else
  echo -e "${AGENT_COLOR}●${RESET} ${GRAY}Model may not be available${RESET}"
fi
echo ""

while true; do
  echo -ne "${BLUE}You:${RESET} "
  read -r input
  [ -z "$input" ] && continue
  echo ""
  chat "$input"
  echo ""
done
