activate

#!/usr/bin/env bash
# Dewey environment activation script
# Usage: source ./activate <deploy-name>

if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
  echo "Error: This script must be sourced, not executed."
  echo "Usage: source ./activate <deploy-name>"
  exit 1
fi

_dewey_script_path() {
  if [[ -n "${ZSH_VERSION:-}" ]]; then
    printf '%s\n' "${(%):-%x}"
  elif [[ -n "${BASH_SOURCE[0]:-}" ]]; then
    printf '%s\n' "${BASH_SOURCE[0]}"
  else
    printf '%s\n' "$0"
  fi
}

_DEWEY_SCRIPT_PATH="$(_dewey_script_path)"
DEWEY_ROOT="$(cd "$(dirname "${_DEWEY_SCRIPT_PATH}")" && pwd)"
unset -f _dewey_script_path
unset _DEWEY_SCRIPT_PATH

_GREEN='\033[0;32m'
_YELLOW='\033[1;33m'
_CYAN='\033[0;36m'
_NC='\033[0m'

_dewey_fail() {
  echo -e "  ${_YELLOW}⚠${_NC} $1" >&2
  return 1
}

_dewey_validate_deploy_name() {
  local deploy_name="$1"
  if [[ ! "$deploy_name" =~ ^[A-Za-z0-9-]{2,8}$ ]]; then
    echo -e "  ${_YELLOW}⚠${_NC} deploy-name must match ^[A-Za-z0-9-]{2,8}$" >&2
    return 1
  fi
}

if [[ "$#" -ne 1 ]]; then
  echo "Error: Dewey activation requires exactly one positional deploy-name."
  echo "Usage: source ./activate <deploy-name>"
  return 1
fi

_dewey_deployment_code="$1"
if ! _dewey_validate_deploy_name "${_dewey_deployment_code}"; then
  return 1
fi

_DEWEY_CONDA_ENV_BASE="DEWEY"
_DEWEY_CONDA_ENV_NAME="${_DEWEY_CONDA_ENV_BASE}-${_dewey_deployment_code}"
unset _dewey_deployment_code

export DEWEY_ROOT
export DEWEY_DEPLOYMENT_CODE="${_DEWEY_CONDA_ENV_NAME#DEWEY-}"
export DEPLOYMENT_CODE="${DEWEY_DEPLOYMENT_CODE}"
export LSMC_DEPLOYMENT_CODE="${DEWEY_DEPLOYMENT_CODE}"
export DEWEY_ACTIVE=1
export DEWEY_PROJECT_ROOT="$DEWEY_ROOT"

echo -e "${_CYAN}Activating Dewey environment...${_NC}"

if ! command -v conda &> /dev/null; then
  _dewey_fail "Conda is required but was not found on PATH."
  unset -f _dewey_fail
  return 1
fi

_DEWEY_CONDA_BASE="$(conda info --base 2>/dev/null)"
if [[ -z "${_DEWEY_CONDA_BASE}" ]] || [[ ! -f "${_DEWEY_CONDA_BASE}/etc/profile.d/conda.sh" ]]; then
  _dewey_fail "Unable to locate conda.sh from 'conda info --base'."
  unset _DEWEY_CONDA_BASE
  unset -f _dewey_fail
  return 1
fi

source "${_DEWEY_CONDA_BASE}/etc/profile.d/conda.sh" 2>/dev/null || {
  _dewey_fail "Failed to source conda.sh from ${_DEWEY_CONDA_BASE}."
  unset _DEWEY_CONDA_BASE
  unset -f _dewey_fail
  return 1
}

_DEWEY_CONDA_ENV_CREATED=0

if [[ "${CONDA_DEFAULT_ENV:-}" == "${_DEWEY_CONDA_ENV_NAME}" ]] || \
  [[ "${CONDA_PREFIX:-}" == "${_DEWEY_CONDA_BASE}/envs/${_DEWEY_CONDA_ENV_NAME}" ]]; then
  echo -e "  ${_GREEN}✓${_NC} Conda environment already active: ${_DEWEY_CONDA_ENV_NAME}"
elif conda info --envs | grep -Eq "(^|[[:space:]])${_DEWEY_CONDA_ENV_NAME}([[:space:]]|$)"; then
  echo -e "  ${_GREEN}✓${_NC} Activating conda environment: ${_DEWEY_CONDA_ENV_NAME}"
  if ! conda activate "${_DEWEY_CONDA_ENV_NAME}"; then
    _dewey_fail "Failed to activate conda environment: ${_DEWEY_CONDA_ENV_NAME}"
    unset _DEWEY_CONDA_BASE
    unset -f _dewey_fail
    return 1
  fi
else
  echo -e "  ${_YELLOW}⚠${_NC} Conda environment '${_DEWEY_CONDA_ENV_NAME}' not found."
  if [[ ! -f "$DEWEY_ROOT/environment.yaml" ]]; then
    _dewey_fail "Conda environment '${_DEWEY_CONDA_ENV_NAME}' was not found and environment.yaml is missing."
    unset _DEWEY_CONDA_BASE
    unset -f _dewey_fail
    return 1
  fi
  echo -e "  ${_CYAN}→${_NC} Installing conda environment from environment.yaml..."
  if ! conda env create -n "${_DEWEY_CONDA_ENV_NAME}" -f "$DEWEY_ROOT/environment.yaml"; then
    _dewey_fail "Failed to create conda environment from environment.yaml."
    unset _DEWEY_CONDA_BASE
    unset -f _dewey_fail
    return 1
  fi
  echo -e "  ${_GREEN}✓${_NC} Activating conda environment: ${_DEWEY_CONDA_ENV_NAME}"
  if ! conda activate "${_DEWEY_CONDA_ENV_NAME}"; then
    _dewey_fail "Failed to activate conda environment: ${_DEWEY_CONDA_ENV_NAME}"
    unset _DEWEY_CONDA_BASE
    unset -f _dewey_fail
    return 1
  fi
  _DEWEY_CONDA_ENV_CREATED=1
fi

if [[ -z "${CONDA_PREFIX:-}" ]] || [[ ! -d "${CONDA_PREFIX}/bin" ]]; then
  _dewey_fail "Conda environment '${_DEWEY_CONDA_ENV_NAME}' is not active after activation."
  unset _DEWEY_CONDA_BASE
  unset -f _dewey_fail
  return 1
fi

export PATH="${CONDA_PREFIX}/bin:${PATH}"

if [[ "${_DEWEY_CONDA_ENV_CREATED}" == "1" ]]; then
  echo -e "  ${_CYAN}→${_NC} Installing editable Dewey checkout..."
  if ! "${CONDA_PREFIX}/bin/python" -m pip install -e "$DEWEY_ROOT" -q; then
    _dewey_fail "Failed to install editable Dewey checkout from ${DEWEY_ROOT}"
    unset _DEWEY_CONDA_BASE
    unset -f _dewey_fail
    return 1
  fi
fi

if command -v rehash >/dev/null 2>&1; then
  rehash
elif command -v hash >/dev/null 2>&1; then
  hash -r 2>/dev/null || true
fi

echo -e "  ${_GREEN}✓${_NC} Dewey environment activated!"

unset _DEWEY_CONDA_BASE
unset _DEWEY_CONDA_ENV_CREATED
unset _DEWEY_CONDA_ENV_NAME
unset _DEWEY_CONDA_ENV_BASE
unset -f _dewey_fail