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

DEFAULT_REPO="${LINAAI_REPO:-$HOME/repos/AgrarianGame}"
REPO="$DEFAULT_REPO"
DRY_RUN=0
FORCE_ESCALATE=0

usage() {
  cat >&2 <<'EOF'
Usage:
  linaai [--repo PATH] [--dry-run] [--force-escalate] [task text...]

Without task text, opens an interactive LinaAI terminal prompt. Each instruction
is routed through Scripts/linaai_task.sh from the selected repo.

Examples:
  linaai
  linaai --dry-run "Confirm repo access and list LinaAI docs."
  linaai "Update docs for the current deployment workflow."

Interactive commands:
  /help       Show commands.
  /repo PATH  Change repo path.
  /status     Show git status for current repo.
  /refresh    Refresh LinaAI knowledge cache.
  /dry on|off Toggle dry-run mode.
  /codex on|off Toggle forced Codex escalation.
  /exit       Quit.
EOF
}

run_status() {
  cd "$REPO"
  printf 'Repo: %s\n' "$REPO"
  git branch --show-current 2>/dev/null || true
  git status --short
}

refresh_context() {
  cd "$REPO"
  if [[ -x Scripts/linaai_refresh_knowledge.sh ]]; then
    Scripts/linaai_refresh_knowledge.sh
  fi
  if [[ -x Scripts/linaai_bootstrap_context.sh ]]; then
    Scripts/linaai_bootstrap_context.sh
  fi
}

run_task() {
  local task="$1"
  cd "$REPO"
  if [[ ! -x Scripts/linaai_task.sh ]]; then
    echo "Missing Scripts/linaai_task.sh in ${REPO}" >&2
    return 2
  fi

  local args=()
  if [[ "$DRY_RUN" -eq 1 ]]; then
    args+=(--dry-run)
  fi
  if [[ "$FORCE_ESCALATE" -eq 1 ]]; then
    args+=(--force-escalate)
  fi

  Scripts/linaai_task.sh "${args[@]}" "$task"
}

while [[ $# -gt 0 ]]; do
  case "$1" in
    --repo)
      REPO="${2:-}"
      shift 2
      ;;
    --dry-run)
      DRY_RUN=1
      shift
      ;;
    --force-escalate)
      FORCE_ESCALATE=1
      shift
      ;;
    -h|--help)
      usage
      exit 0
      ;;
    --)
      shift
      break
      ;;
    -*)
      echo "Unknown option: $1" >&2
      usage
      exit 2
      ;;
    *)
      break
      ;;
  esac
done

if [[ ! -d "$REPO" ]]; then
  echo "Repo does not exist: ${REPO}" >&2
  exit 2
fi

if [[ $# -gt 0 ]]; then
  run_task "$*"
  exit $?
fi

cat <<EOF
LinaAI terminal
Repo: ${REPO}
Dry run: $([[ "$DRY_RUN" -eq 1 ]] && echo on || echo off)
Forced Codex: $([[ "$FORCE_ESCALATE" -eq 1 ]] && echo on || echo off)
Type /help for commands or /exit to quit.
EOF

while true; do
  printf '\nlinaai> '
  if ! IFS= read -r line; then
    printf '\n'
    break
  fi

  [[ -z "${line// }" ]] && continue

  case "$line" in
    /exit|/quit)
      break
      ;;
    /help)
      usage
      ;;
    /status)
      run_status
      ;;
    /refresh)
      refresh_context
      ;;
    /dry\ on)
      DRY_RUN=1
      echo "Dry run on."
      ;;
    /dry\ off)
      DRY_RUN=0
      echo "Dry run off."
      ;;
    /codex\ on)
      FORCE_ESCALATE=1
      echo "Forced Codex escalation on."
      ;;
    /codex\ off)
      FORCE_ESCALATE=0
      echo "Forced Codex escalation off."
      ;;
    /repo\ *)
      next_repo="${line#/repo }"
      if [[ -d "$next_repo" ]]; then
        REPO="$next_repo"
        echo "Repo set to ${REPO}"
      else
        echo "Repo does not exist: ${next_repo}" >&2
      fi
      ;;
    /*)
      echo "Unknown command: ${line}" >&2
      ;;
    *)
      run_task "$line"
      ;;
  esac
done