#!/usr/bin/env bash
# The Analyzer - Shared Utilities

# Load colors
__UTILS_SRC="${BASH_SOURCE[0]}"
if command -v readlink &>/dev/null; then
  while [ -h "$__UTILS_SRC" ]; do
    __UTILS_SRC="$(readlink "$__UTILS_SRC")"
    [[ "$__UTILS_SRC" != /* ]] && __UTILS_SRC="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/$__UTILS_SRC"
  done
fi
SCRIPT_DIR="$(cd "$(dirname "$__UTILS_SRC")" && pwd 2>/dev/null)" || SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
unset __UTILS_SRC
source "$SCRIPT_DIR/colors.sh"

# Config
export ANALYZER_DIR="$SCRIPT_DIR/.."
export VECTORS_DIR="$ANALYZER_DIR/vectors"
export REPORTS_DIR="$ANALYZER_DIR/reports"
export ENGINE_DIR="$ANALYZER_DIR/engine"
export TIMEOUT=30
export MAX_VECTORS=10
export OLLAMA_HOST="${OLLAMA_HOST:-http://10.30.20.110:11434}"
export OLLAMA_MODEL="${OLLAMA_MODEL:-granite4.1:8b}"

# Check dependencies
check_deps() {
  local missing=()
  for cmd in curl jq; do
    if ! command -v $cmd &>/dev/null; then
      missing+=("$cmd")
    fi
  done
  if [ ${#missing[@]} -gt 0 ]; then
    print_error "Missing dependencies: ${missing[*]}"
    print_info "Install: apt install ${missing[*]}"
    exit 1
  fi
}

# Check Ollama is running
check_ollama() {
  if ! curl -s "$OLLAMA_HOST/api/tags" >/dev/null 2>&1; then
    print_error "Ollama not running at $OLLAMA_HOST"
    print_info "Start it: ollama serve"
    return 1
  fi
  print_ok "Ollama connected ($OLLAMA_HOST)"
  return 0
}

# Call Ollama with a prompt, return response
ollama_prompt() {
  local prompt="$1"
  local system="$2"
  local model="${3:-$OLLAMA_MODEL}"
  
  local payload=$(jq -n \
    --arg model "$model" \
    --arg prompt "$prompt" \
    --arg system "$system" \
    '{
      model: $model,
      prompt: $prompt,
      system: $system,
      stream: false,
      options: {
        temperature: 0.2,
        num_predict: 2048
      }
    }')
  
  local response=$(curl -s "$OLLAMA_HOST/api/generate" \
    -H "Content-Type: application/json" \
    -d "$payload" 2>/dev/null)
  
  echo "$response" | jq -r '.response // "ERROR: No response"' 2>/dev/null
}

# Sanitize URL for filenames
sanitize() {
  echo "$1" | sed 's|https\?://||' | sed 's|/|_|g' | sed 's|[^a-zA-Z0-9._-]|_|g'
}

# Extract domain from URL
get_domain() {
  echo "$1" | sed 's|https\?://||' | cut -d/ -f1 | cut -d: -f1
}

# Extract base URL (protocol + domain)
get_base() {
  echo "$1" | sed 's|\(https\?://[^/]*\).*|\1|'
}

# Quick HTTP check
http_check() {
  local url="$1"
  curl -s -o /dev/null -w "%{http_code}" --connect-timeout 5 --max-time 10 "$url" 2>/dev/null
}

# Get response headers
get_headers() {
  local url="$1"
  curl -sI --connect-timeout 5 --max-time 10 "$url" 2>/dev/null
}

# Get page title
get_title() {
  local url="$1"
  curl -s --connect-timeout 5 --max-time 10 "$url" 2>/dev/null | sed -n 's/.*<title>\([^<]*\)<\/title>.*/\1/p' | sed 's/<[^>]*>//g' | head -1
}

# Check if target is alive
target_alive() {
  local code=$(http_check "$1")
  [[ "$code" =~ ^[23] ]] && return 0
  return 1
}

# Run a command with timeout, return output
run_timeout() {
  local cmd="$1"
  local timeout="${2:-$TIMEOUT}"
  timeout $timeout bash -c "$cmd" 2>/dev/null || echo "TIMEOUT_OR_ERROR"
}

# Colorize severity
severity_color() {
  case "$1" in
    critical|CRITICAL) echo -e "${BRIGHT_RED}${BOLD}CRITICAL${NC}" ;;
    high|HIGH)         echo -e "${RED}${BOLD}HIGH${NC}" ;;
    medium|MEDIUM)     echo -e "${YELLOW}${BOLD}MEDIUM${NC}" ;;
    low|LOW)           echo -e "${BLUE}${BOLD}LOW${NC}" ;;
    info|INFO)         echo -e "${DIM}INFO${NC}" ;;
    *)                 echo -e "${DIM}$1${NC}" ;;
  esac
}

# Create report header
init_report() {
  local target="$1"
  local domain=$(get_domain "$target")
  local ts=$(date '+%Y-%m-%d_%H%M%S')
  local report_file="$REPORTS_DIR/${domain}_${ts}.md"
  
  cat > "$report_file" << EOF
# The Analyzer Report
**Target:** $target  
**Domain:** $domain  
**Date:** $(date '+%Y-%m-%d %H:%M:%S')  
**Analyst:** The Analyzer v1.0  
**Status:** In Progress  

---

## Reconnaissance

EOF
  echo "$report_file"
}

# Append to report
append_report() {
  local report="$1"
  local content="$2"
  echo -e "$content" >> "$report"
}

# Finalize report
finalize_report() {
  local report="$1"
  local find_count="$2"
  local vuln_count="$3"
  
  local ts=$(date '+%Y-%m-%d %H:%M:%S')
  
  cat >> "$report" << EOF

---

## Summary

- **Total Findings:** $find_count
- **Vulnerabilities:** $vuln_count
- **Completed:** $ts
- **Status:** Complete

---
*Generated by The Analyzer v1.0 — Authorized Bug Bounty Use Only*
EOF

  echo "$report"
}

# List available vector modules
list_vectors() {
  echo -e "${BOLD}Available Attack Vectors:${NC}"
  echo ""
  for f in "$VECTORS_DIR"/*.sh; do
    local name=$(basename "$f" .sh)
    local desc=$(head -5 "$f" | grep "^# Desc:" | sed 's/^# Desc: //')
    local num=$(echo "$name" | cut -d- -f1)
    printf "  ${CYAN}[%02d]${NC} %-30s %s\n" "$num" "${name#?-}" "$desc"
  done
}

# User prompt with default
prompt_default() {
  local msg="$1"
  local default="$2"
  read -p "  ${ICON_ARROW} $msg [$default]: " input
  echo "${input:-$default}"
}