import { ROUTE_TITLE_MAP } from "./constants"
import type { BreadcrumbItem } from "./types"

/** 根据当前路径生成面包屑 */
export const generateBreadcrumb = (pathname: string): BreadcrumbItem[] => {
  const items: BreadcrumbItem[] = [{ label: "首页", path: "/app/dashboard" }]

  // 首页本身不需要面包屑
  if (pathname === "/app" || pathname === "/app/dashboard") {
    return items
  }

  // 逐级拆分路径，生成中间层级
  const segments = pathname.split("/").filter(Boolean)
  let currentPath = ""

  for (let i = 0; i < segments.length; i++) {
    currentPath += `/${segments[i]}`
    const title = ROUTE_TITLE_MAP[currentPath]

    if (title) {
      // 最后一级不带 path（当前页面，不可点击）
      const isLast = i === segments.length - 1
      items.push({
        label: title,
        path: isLast ? undefined : currentPath,
      })
    } else {
      // 动态路由段（如 :id），用路径片段做 label
      const isLast = i === segments.length - 1
      items.push({
        label: segments[i],
        path: isLast ? undefined : currentPath,
      })
    }
  }

  return items
}