#!/usr/bin/env bash

set -euo pipefail

prepend_path_dir() {
  local dir="$1"

  if [[ -z "${dir}" || ! -d "${dir}" ]]; then
    return
  fi

  if [[ ":${PATH}:" == *":${dir}:"* ]]; then
    return
  fi

  export PATH="${dir}:${PATH}"
}

prepend_colon_path() {
  local raw_paths="$1"
  local old_ifs="${IFS}"
  local -a dirs=()
  local dir

  IFS=':'
  for dir in ${raw_paths}; do
    dirs+=("${dir}")
  done
  IFS="${old_ifs}"

  for ((index = ${#dirs[@]} - 1; index >= 0; index--)); do
    prepend_path_dir "${dirs[index]}"
  done
}

append_path_dir() {
  local dir="$1"

  if [[ -z "${dir}" || ! -d "${dir}" ]]; then
    return
  fi

  if [[ ":${PATH}:" == *":${dir}:"* ]]; then
    return
  fi

  export PATH="${PATH}:${dir}"
}

append_colon_path() {
  local raw_paths="$1"
  local old_ifs="${IFS}"
  local dir

  IFS=':'
  for dir in ${raw_paths}; do
    append_path_dir "${dir}"
  done
  IFS="${old_ifs}"
}

append_node_version_dirs() {
  local root="$1"
  local dir

  if [[ ! -d "${root}" ]]; then
    return
  fi

  for dir in "${root}"/*/bin; do
    [[ -d "${dir}" ]] || continue
    prepend_path_dir "${dir}"
  done
}

# Jenkins 的非交互 shell 不一定加载 nvm/profile；生产导入导出脚本需要显式补齐工具链目录。
append_node_version_dirs "/var/lib/jenkins/.nvm/versions/node"
append_node_version_dirs "${HOME:-}/.nvm/versions/node"

for tool_dir in \
  "/var/lib/jenkins/.nvm/versions/node/v22.22.2/bin" \
  "/var/lib/jenkins/.cargo/bin" \
  "/var/lib/jenkins/.local/bin" \
  "/var/lib/jenkins/bin" \
  "${HOME:-}/.cargo/bin" \
  "${HOME:-}/.local/bin" \
  "/root/.cargo/bin" \
  "/usr/local/cargo/bin" \
  "/stdb/bin/current" \
  "/usr/.local/share/spacetime/bin/current"; do
  prepend_path_dir "${tool_dir}"
done

# 系统路径只做补位，避免压过 Jenkins 用户目录里的 Node/Cargo/SpacetimeDB 工具链。
append_colon_path "/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"

# 目标机器路径不同的时候，显式传入的路径应当拥有最高优先级。
prepend_colon_path "${GENARRATIVE_JENKINS_TOOL_PATHS:-}"

require_toolchain_command() {
  local command_name="$1"
  local install_hint="$2"

  if command -v "${command_name}" >/dev/null 2>&1; then
    echo "[jenkins-toolchain] ${command_name}=$(command -v "${command_name}")"
    return
  fi

  echo "[jenkins-toolchain] 缺少 ${command_name}。${install_hint}" >&2
  echo "[jenkins-toolchain] 当前 PATH=${PATH}" >&2
  exit 1
}

require_toolchain_command node "请确认 Node.js 已安装到 Jenkins 用户目录，或通过 GENARRATIVE_JENKINS_TOOL_PATHS 显式传入其 bin 目录。"

if [[ -z "${GENARRATIVE_SPACETIME_TOKEN:-}" ]]; then
  require_toolchain_command spacetime "请确认 SpacetimeDB CLI 已安装到 Jenkins 用户目录，或通过 GENARRATIVE_JENKINS_TOOL_PATHS 显式传入其 bin 目录。"
else
  echo "[jenkins-toolchain] 已提供 GENARRATIVE_SPACETIME_TOKEN，跳过 spacetime CLI 预检"
fi