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

KB_URL="${NETGESCON_KB_URL:-http://192.168.0.53:3838}"
API_KEY="${NETGESCON_KB_API_KEY:-}"
ORCH_BIN="${NETGESCON_ORCHESTRATOR_BIN:-$HOME/netgescon-orchestrator/.venv/bin/agent-orchestrator}"
WORK_DIR="${NETGESCON_ORCHESTRATOR_WORKDIR:-$HOME/netgescon-orchestrator}"
ENV_FILE="${NETGESCON_KB_ENV_FILE:-$HOME/.config/netgescon/kb.env}"
MODE="analyze"
BACKLOG_FILE=""
TASK_ID=""
QUERY_TERMS=()

usage() {
  cat <<'EOF'
Usage: scripts/ops/netgescon-orchestrator-kb-run.sh --backlog <file> [options]

Required:
  --backlog <file>             Markdown backlog file.

Options:
  --query <text>              KB query term. Repeatable.
  --mode <analyze|execute>    Default: analyze.
  --task-id <id>              Required with --mode execute.
  --kb-url <url>              Override KB URL.
  --api-key <key>             Override KB API key.
  --orchestrator-bin <path>   Override agent-orchestrator binary path.
  --work-dir <path>           Output directory for generated context files.
  --env-file <path>           Optional shell env file to source before execution.
  --help                      Show this message.

Environment:
  NETGESCON_KB_URL            Default KB URL.
  NETGESCON_KB_API_KEY        Required for KB search.
  NETGESCON_ORCHESTRATOR_BIN  Default local orchestrator binary.
  NETGESCON_KB_ENV_FILE       Optional env file path. Default: ~/.config/netgescon/kb.env
EOF
}

while [[ $# -gt 0 ]]; do
  case "$1" in
    --backlog)
      BACKLOG_FILE="$2"
      shift 2
      ;;
    --query)
      QUERY_TERMS+=("$2")
      shift 2
      ;;
    --mode)
      MODE="$2"
      shift 2
      ;;
    --task-id)
      TASK_ID="$2"
      shift 2
      ;;
    --kb-url)
      KB_URL="$2"
      shift 2
      ;;
    --api-key)
      API_KEY="$2"
      shift 2
      ;;
    --orchestrator-bin)
      ORCH_BIN="$2"
      shift 2
      ;;
    --work-dir)
      WORK_DIR="$2"
      shift 2
      ;;
    --env-file)
      ENV_FILE="$2"
      shift 2
      ;;
    --help)
      usage
      exit 0
      ;;
    *)
      echo "Unknown option: $1"
      usage
      exit 1
      ;;
  esac
done

if [[ -f "$ENV_FILE" ]]; then
  # shellcheck disable=SC1090
  source "$ENV_FILE"
  KB_URL="${NETGESCON_KB_URL:-$KB_URL}"
  API_KEY="${NETGESCON_KB_API_KEY:-$API_KEY}"
  ORCH_BIN="${NETGESCON_ORCHESTRATOR_BIN:-$ORCH_BIN}"
  WORK_DIR="${NETGESCON_ORCHESTRATOR_WORKDIR:-$WORK_DIR}"
fi

if [[ -z "$BACKLOG_FILE" || ! -f "$BACKLOG_FILE" ]]; then
  echo "Backlog file not found: $BACKLOG_FILE"
  exit 1
fi

if [[ "$MODE" == "execute" && -z "$TASK_ID" ]]; then
  echo "--task-id is required when --mode execute"
  exit 1
fi

if [[ -z "$API_KEY" ]]; then
  echo "NETGESCON_KB_API_KEY is required"
  echo "Hint: export it in the shell or put it into $ENV_FILE"
  exit 1
fi

if [[ ! -x "$ORCH_BIN" ]]; then
  echo "agent-orchestrator binary not found or not executable: $ORCH_BIN"
  exit 1
fi

mkdir -p "$WORK_DIR"

if [[ ${#QUERY_TERMS[@]} -eq 0 ]]; then
  QUERY_TERMS=("anagrafica unica" "ticket operativita" "integrazione contabile")
fi

timestamp="$(date +%Y%m%d-%H%M%S)"
brief_file="$WORK_DIR/kb-brief-$timestamp.md"
merged_file="$WORK_DIR/backlog-with-kb-$timestamp.md"

curl -fsS "$KB_URL/api/v1/health" >/dev/null

{
  echo "# KB Briefing"
  echo
  echo "Generato: $(date '+%Y-%m-%d %H:%M:%S')"
  echo "KB URL: $KB_URL"
  echo
  for query in "${QUERY_TERMS[@]}"; do
    echo "## Query: $query"
    echo
    curl -fsS -H "X-API-Key: $API_KEY" \
      --get \
      --data-urlencode "q=$query" \
      "$KB_URL/api/v1/search"
    echo
    echo
  done
} > "$brief_file"

{
  cat "$brief_file"
  echo
  echo "---"
  echo
  cat "$BACKLOG_FILE"
} > "$merged_file"

echo "KB brief written to: $brief_file"
echo "Merged backlog written to: $merged_file"

if [[ "$MODE" == "analyze" ]]; then
  exec "$ORCH_BIN" analyze-backlog "$merged_file"
fi

exec "$ORCH_BIN" execute-task "$TASK_ID" --agent auto