Minecraft-Console-Client/tools/mcc-env.sh

#!/bin/bash
# MCC (Minecraft Console Client) Development Utilities
# Source this file to get helper functions: source $MCC_REPO/tools/mcc-env.sh
# Or add to ~/.bashrc:  source "$HOME/Minecraft/Minecraft-Console-Client/tools/mcc-env.sh"

if [[ -n "${BASH_SOURCE[0]:-}" ]]; then
  _mcc_env_source="${BASH_SOURCE[0]}"
elif [[ -n "${ZSH_VERSION:-}" ]]; then
  _mcc_env_source="${(%):-%N}"
else
  _mcc_env_source="$0"
fi

TOOLS_DIR="$(cd "$(dirname "$_mcc_env_source")" && pwd)"
MCC_REPO_ROOT="$(cd "$TOOLS_DIR/.." && pwd)"
unset _mcc_env_source
export MCC_REPO="$MCC_REPO_ROOT"
export MCC_SERVERS="${MCC_SERVERS:-$MCC_REPO_ROOT/MinecraftOfficial/downloads}"

_mcc_repo_root() {
  printf '%s\n' "$MCC_REPO_ROOT"
}

_mcc_servers_root() {
  printf '%s\n' "${MCC_SERVERS:-$MCC_REPO_ROOT/MinecraftOfficial/downloads}"
}

_mcc_current_worktree_name() {
  local worktree_root
  if ! worktree_root="$(git -C "$MCC_REPO_ROOT" rev-parse --show-toplevel 2>/dev/null)"; then
    return 0
  fi

  if [[ -z "$worktree_root" ]]; then
    return 0
  fi

  basename "$worktree_root"
}

_mcc_resolve_session() {
  local explicit="${1:-}"
  if [[ -n "$explicit" ]]; then
    printf '%s\n' "$explicit"
    return 0
  fi

  local worktree
  worktree="$(_mcc_current_worktree_name)"
  if [[ -n "$worktree" ]]; then
    printf '%s\n' "$worktree"
    return 0
  fi

  basename "$MCC_REPO_ROOT"
}

_mcc_sha1_short() {
  if command -v sha1sum >/dev/null 2>&1; then
    printf '%s' "$1" | sha1sum | awk '{print substr($1, 1, 4)}'
  else
    printf '%s' "$1" | shasum -a 1 | awk '{print substr($1, 1, 4)}'
  fi
}

_mcc_resolve_username() {
  local session="$1"
  local normalized
  normalized="$(printf '%s' "$session" | tr '[:upper:]' '[:lower:]' | sed 's/[^a-z0-9_]/_/g')"
  local candidate="mcc_${normalized}"
  if (( ${#candidate} <= 16 )); then
    printf '%s\n' "$candidate"
    return 0
  fi

  local hash
  hash="$(_mcc_sha1_short "$normalized")"
  printf '%s_%s\n' "${candidate:0:11}" "$hash"
}

_mcc_session_root() {
  printf '%s/mcc-debug/%s\n' "${TMPDIR:-/tmp}" "$1"
}

_mcc_session_log_file() {
  printf '%s/mcc-debug.log\n' "$(_mcc_session_root "$1")"
}

_mcc_session_input_file() {
  printf '%s/mcc_input.txt\n' "$(_mcc_session_root "$1")"
}

_mcc_session_pid_file() {
  printf '%s/mcc.pid\n' "$(_mcc_session_root "$1")"
}

_mcc_session_meta_file() {
  printf '%s/session.meta\n' "$(_mcc_session_root "$1")"
}

_mcc_tmux_session_name() {
  printf 'mcc-%s\n' "$1"
}

_mcc_build_root() {
  local worktree
  worktree="$(_mcc_current_worktree_name)"
  if [[ -z "$worktree" ]]; then
    worktree="$(basename "$MCC_REPO_ROOT")"
  fi

  if [[ "${MCC_BUILD_MODE:-local}" == "tmpfs" ]]; then
    if [[ -d /dev/shm && -w /dev/shm ]]; then
      printf '/dev/shm/mcc-build/%s\n' "$worktree"
    else
      printf '%s/mcc-build/%s\n' "${TMPDIR:-/tmp}" "$worktree"
    fi
    return 0
  fi

  printf '%s\n' "$MCC_REPO_ROOT"
}

_mcc_dotnet_env() {
  if [[ "${MCC_BUILD_MODE:-local}" == "tmpfs" ]]; then
    local build_root
    build_root="$(_mcc_build_root)"
    mkdir -p "$build_root"
    env MCC_BUILD_ROOT="$build_root" "$@"
    return $?
  fi

  "$@"
}

# Helper: convert version to tmux session name (dots -> underscores)
_mc-session() { echo "mc-${1//\./_}"; }

_mc_requires_confirm() {
  local action="$1"
  local rerun_command="$2"
  cat >&2 <<EOF
Refusing to ${action} without --confirm.
Keep shared servers running by default. Only stop or reset them when the user explicitly asks, or when you need to switch server versions.
If you really intend to do this, rerun: ${rerun_command} --confirm
EOF
  return 1
}

# --- Minecraft Server Management ---
mc-start() { bash "$MCC_REPO/tools/start-server.sh" "${1:-1.20.6}"; }
mc-stop()  {
  local v="1.20.6"
  local version_set=false
  local confirm=false
  local -a rerun=(mc-stop)
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --confirm) confirm=true; shift ;;
      *)
        if [[ "$version_set" == false ]]; then
          v="$1"
          version_set=true
          rerun+=("$1")
          shift
        else
          echo "mc-stop: unexpected argument: $1" >&2
          return 1
        fi
        ;;
    esac
  done
  if [[ ${#rerun[@]} -eq 1 ]]; then
    rerun+=("$v")
  fi
  if [[ "$confirm" != true ]]; then
    _mc_requires_confirm "stop shared server '$v'" "${rerun[*]}"
    return 1
  fi
  echo "stop" > "$MCC_SERVERS/$v/stdin.pipe"
}
mc-cmd()   { local v="${2:-1.20.6}"; echo "$1" > "$MCC_SERVERS/$v/stdin.pipe"; }
mc-log()   { local s; s=$(_mc-session "${1:-1.20.6}"); tmux capture-pane -t "$s" -p -S "-${2:-50}"; }
mc-kill()  {
  local v="1.20.6"
  local version_set=false
  local confirm=false
  local -a rerun=(mc-kill)
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --confirm) confirm=true; shift ;;
      *)
        if [[ "$version_set" == false ]]; then
          v="$1"
          version_set=true
          rerun+=("$1")
          shift
        else
          echo "mc-kill: unexpected argument: $1" >&2
          return 1
        fi
        ;;
    esac
  done
  if [[ ${#rerun[@]} -eq 1 ]]; then
    rerun+=("$v")
  fi
  if [[ "$confirm" != true ]]; then
    _mc_requires_confirm "force-kill shared server '$v'" "${rerun[*]}"
    return 1
  fi
  local s
  s=$(_mc-session "$v")
  tmux kill-session -t "$s" 2>/dev/null
  rm -f "$MCC_SERVERS/$v/stdin.pipe"
  echo "Killed $s"
}
mc-list()  { tmux list-sessions 2>/dev/null | grep "^mc-" || echo "No running MC servers"; }
mc-wait-ready() { bash "$MCC_REPO/.skills/mcc-integration-testing/scripts/preflight_test_env.sh" "${1:-1.20.6}" >/dev/null && source "$MCC_REPO/.skills/mcc-integration-testing/scripts/common.sh" && wait_for_server_ready "${1:-1.20.6}" "${2:-60}"; }
mc-wait-stop() { source "$MCC_REPO/.skills/mcc-integration-testing/scripts/common.sh" && wait_for_server_stop "${1:-1.20.6}" "${2:-60}"; }
mc-reset-test-env() {
  local confirm=false
  local -a args=()
  local -a rerun=(mc-reset-test-env)
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --confirm) confirm=true; shift ;;
      *)
        args+=("$1")
        rerun+=("$1")
        shift
        ;;
    esac
  done
  if [[ "$confirm" != true ]]; then
    _mc_requires_confirm "reset shared server test state" "${rerun[*]}"
    return 1
  fi
  bash "$MCC_REPO/.skills/mcc-integration-testing/scripts/reset_shared_test_state.sh" "${args[@]}"
}

# --- RCON ---
mc-rcon() { bash "$MCC_REPO/tools/mc-rcon.sh" "$@"; }

# --- MCC Build/Run ---
mcc-build() {
  local repo_root
  repo_root="$(_mcc_repo_root)"
  _mcc_dotnet_env dotnet build "$repo_root/MinecraftClient.sln" -c Release
}
mcc-build-clean() {
  if [[ "${MCC_BUILD_MODE:-local}" == "tmpfs" ]]; then
    local build_root
    build_root="$(_mcc_build_root)"
    rm -rf "$build_root"
    return 0
  fi

  dotnet clean "$(_mcc_repo_root)/MinecraftClient.sln" -c Release
}
mcc-run()   {
  local session="" username="" port="25565"
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --session)
        shift
        if [[ $# -eq 0 ]]; then
          echo "mcc-run: --session requires a value" >&2
          return 1
        fi
        session="$1"
        shift
        ;;
      --username)
        shift
        if [[ $# -eq 0 ]]; then
          echo "mcc-run: --username requires a value" >&2
          return 1
        fi
        username="$1"
        shift
        ;;
      --port)
        shift
        if [[ $# -eq 0 ]]; then
          echo "mcc-run: --port requires a value" >&2
          return 1
        fi
        port="$1"
        shift
        ;;
      *)
        echo "Unknown option: $1" >&2
        return 1
        ;;
    esac
  done

  local -a args=(--file-input --no-build --port "$port")
  if [[ -n "$session" ]]; then
    args+=(--session "$session")
  fi
  if [[ -n "$username" ]]; then
    args+=(--username "$username")
  fi

  bash "$MCC_REPO/tools/mcc-debug.sh" "${args[@]}"
}
mcc-cmd() {
  local session=""
  local -a command_parts=()
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --session)
        shift
        if [[ $# -eq 0 ]]; then
          echo "mcc-cmd: --session requires a value" >&2
          return 1
        fi
        session="$1"
        shift
        ;;
      *)
        command_parts+=("$1")
        shift
        ;;
    esac
  done

  if [[ ${#command_parts[@]} -eq 0 ]]; then
    echo "Usage: mcc-cmd [--session NAME] <command>" >&2
    return 1
  fi
  session="$(_mcc_resolve_session "$session")"
  local input_file
  input_file="$(_mcc_session_input_file "$session")"
  mkdir -p "$(dirname "$input_file")"
  local command
  command="${command_parts[*]}"
  printf '%s\n' "$command" >> "$input_file"
}
mcc-kill()  {
  local session=""
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --session)
        shift
        if [[ $# -eq 0 ]]; then
          echo "mcc-kill: --session requires a value" >&2
          return 1
        fi
        session="$1"
        shift
        ;;
      *)
        echo "Unknown option: $1" >&2
        return 1
        ;;
    esac
  done

  session="$(_mcc_resolve_session "$session")"
  local pid_file meta_file tmux_session pid pid_comm pid_args
  local killed=false
  pid_file="$(_mcc_session_pid_file "$session")"
  meta_file="$(_mcc_session_meta_file "$session")"
  tmux_session="$(_mcc_tmux_session_name "$session")"

  if [[ -f "$pid_file" ]]; then
    pid="$(tr -cd '0-9' < "$pid_file")"
    if [[ -n "$pid" ]] && kill -0 "$pid" 2>/dev/null; then
      pid_comm="$(ps -p "$pid" -o comm= 2>/dev/null | tr -d '[:space:]')"
      pid_args="$(ps -p "$pid" -o args= 2>/dev/null || true)"
      if [[ "$pid_comm" == "MinecraftClient" ]] || { [[ "$pid_comm" == "dotnet" ]] && [[ "$pid_args" == *"MinecraftClient"* ]]; }; then
        kill "$pid" 2>/dev/null || true
        echo "Killed MCC PID $pid for session '$session'"
        killed=true
      else
        echo "Refusing to kill PID $pid for session '$session': unexpected process '$pid_comm'"
      fi
    else
      echo "No live MCC PID found for session '$session' (pid file: $pid_file)"
    fi
  fi

  if tmux has-session -t "$tmux_session" 2>/dev/null; then
    tmux kill-session -t "$tmux_session" 2>/dev/null || true
    echo "Killed tmux session '$tmux_session'"
    killed=true
  fi

  if [[ -f "$pid_file" || -f "$meta_file" ]]; then
    rm -f "$pid_file" "$meta_file"
  fi

  if [[ "$killed" == false ]]; then
    echo "No MCC process or tmux session found for session '$session'"
  fi
}
mcc-reload() {
  mcc-kill
  sleep 1
  mcc-build && mcc-run
}

# --- TUI Mode ---
mcc-tui()   {
  local session="" username="" port="25565"
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --session)
        shift
        if [[ $# -eq 0 ]]; then
          echo "mcc-tui: --session requires a value" >&2
          return 1
        fi
        session="$1"
        shift
        ;;
      --username)
        shift
        if [[ $# -eq 0 ]]; then
          echo "mcc-tui: --username requires a value" >&2
          return 1
        fi
        username="$1"
        shift
        ;;
      --port)
        shift
        if [[ $# -eq 0 ]]; then
          echo "mcc-tui: --port requires a value" >&2
          return 1
        fi
        port="$1"
        shift
        ;;
      *)
        echo "Unknown option: $1" >&2
        return 1
        ;;
    esac
  done

  local -a args=(-m tui --no-build --port "$port")
  if [[ -n "$session" ]]; then
    args+=(--session "$session")
  fi
  if [[ -n "$username" ]]; then
    args+=(--username "$username")
  fi

  bash "$MCC_REPO/tools/mcc-debug.sh" "${args[@]}"
}

_mcc_session_log_tail() {
  local session="$1"
  local log_file
  log_file="$(_mcc_session_log_file "$session")"
  if [[ -e "$log_file" ]]; then
    tail -n 30 "$log_file" 2>/dev/null
  else
    echo "No MCC log found"
  fi
}

_mcc_session_log_follow() {
  local session="$1"
  local log_file
  log_file="$(_mcc_session_log_file "$session")"
  tail -f "$log_file" 2>/dev/null || echo "No MCC log found"
}

# --- Debug helpers ---
mcc-debug()   { bash "$MCC_REPO/tools/mcc-debug.sh" "$@"; }
mcc-log-mcc() {
  local session=""
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --session)
        shift
        if [[ $# -eq 0 ]]; then
          echo "mcc-log-mcc: --session requires a value" >&2
          return 1
        fi
        session="$1"
        shift
        ;;
      *)
        echo "Unknown option: $1" >&2
        return 1
        ;;
    esac
  done

  session="$(_mcc_resolve_session "$session")"
  _mcc_session_log_follow "$session"
}
mcc-state() {
  local session=""
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --session)
        shift
        if [[ $# -eq 0 ]]; then
          echo "mcc-state: --session requires a value" >&2
          return 1
        fi
        session="$1"
        shift
        ;;
      *)
        echo "Unknown option: $1" >&2
        return 1
        ;;
    esac
  done

  session="$(_mcc_resolve_session "$session")"
  mcc-cmd --session "$session" "debug state"
  sleep 1
  _mcc_session_log_tail "$session"
}
mcc-preflight() { bash "$MCC_REPO/.skills/mcc-integration-testing/scripts/preflight_test_env.sh" "$@"; }
mcc-reset-session() {
  local session=""
  while [[ $# -gt 0 ]]; do
    case "$1" in
      --session)
        shift
        if [[ $# -eq 0 ]]; then
          echo "mcc-reset-session: --session requires a value" >&2
          return 1
        fi
        session="$1"
        shift
        ;;
      *)
        echo "Unknown option: $1" >&2
        return 1
        ;;
    esac
  done

  session="$(_mcc_resolve_session "$session")"
  tmux kill-session -t "$(_mcc_tmux_session_name "$session")" 2>/dev/null || true
  rm -rf "$(_mcc_session_root "$session")"
}