local M = {}


M.file_get_contents = function(filepath)
    
    local file, errmsg = io.open(fw.website_dir()..filepath, "r")
    if not file then
        fw.throw_string(errmsg)
    end
    local content = file:read("*a")
    if content == nil or content == "" then
        print("file_get_contents error: ",filepath)
        return ""
    end
    local replaced,c2 = engine.replace(content)
    if replaced then
        return c2
    end
    return content
end
M.menu_top = function()
    -- 当前请求路径
    local request_path = request.filepath() or ""
    -- 取配置
    local menuData = require("fwutils.develop.function.menu").bytecode(string.format("%d",engine.cfg.role_id()))
    if not menuData then
        return "<!-- no menu config -->"
    end

    -- 提取并排序主菜单
    local menuItems = {}
    for name, item in pairs(menuData) do
        table.insert(menuItems, {
            name = name,
            item = item,
            sort = item.sort or 0
        })
    end
    table.sort(menuItems, function(a, b)
        return a.sort > b.sort
    end)

    local html = [[

  <ul class="navbar-nav me-auto mb-2 mb-lg-0">
  ]]

    -- 渲染主菜单
    for _, entry in ipairs(menuItems) do
        local name = entry.name
        local item = entry.item
        local icon = item.icon or ""
        local path = item.path or "#"
        local activeClass = ""

        if item.children then
            -- 有子菜单
            local isMegamenu = item.megamenu and " dropdown-megamenu" or ""

            -- 检查子菜单是否有激活
            local hasActiveChild = false
            local children = {}
            for childName, childItem in pairs(item.children) do
                table.insert(children, {
                    name = childName,
                    item = childItem,
                    sort = childItem.sort or 0
                })
                if not hasActiveChild and (request_path == (childItem.path or "")) then
                    hasActiveChild = true
                end
            end
            table.sort(children, function(a, b)
                return a.sort > b.sort
            end)

            -- 父菜单激活：当前页面是父菜单path，或是任一子菜单path
            if request_path == path or hasActiveChild then
                activeClass = "active-link"
            end

            html = html .. [[
    <li class="nav-item dropdown ]] .. activeClass .. [[">
      <a class="nav-link dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown" aria-expanded="false">
        <i class="]] .. icon .. [["></i> ]] .. name .. [[
      </a>
      <ul class="dropdown-menu]] .. isMegamenu .. [[">
  ]]

            -- 渲染子菜单
            for _, child in ipairs(children) do
                local childName = child.name
                local childItem = child.item
                local childPath = childItem.path or "#"

                -- 子菜单不设置激活样式
                html = html .. [[
        <li>
          <a class="dropdown-item" href="]] .. childPath .. [[">
            <span>]] .. childName .. [[</span>
          </a>
        </li>
  ]]
            end

            html = html .. [[
      </ul>
    </li>
  ]]
        else
            -- 没有子菜单
            -- 简单的“当前页面是否激活”检查
            if request_path == path then
                activeClass = "active-link"
            end
            html = html .. [[
    <li class="nav-item ]] .. activeClass .. [[">
      <a class="nav-link" href="]] .. path .. [[">
        <i class="]] .. icon .. [["></i> ]] .. name .. [[
      </a>
    </li>
  ]]
        end
    end

    html = html .. [[
  </ul>
  ]]

    return [=[
    <nav class="navbar navbar-expand-lg">
          <div class="container">
            <div class="offcanvas offcanvas-end" id="MobileMenu">
              <div class="offcanvas-header">
                <h5 class="offcanvas-title semibold">Navigation</h5>
                <button type="button" class="btn btn-danger btn-sm ms-auto" data-bs-dismiss="offcanvas">
                  <i class="icon-clear"></i>
                </button>
              </div>
    ]=]..html..[[
            </div>
          </div>
        </nav>
    ]]
end
M.teacher_photos = function()
  require("app.app")
  local conn = db_conn()
  local edu_id = edu_id()
  local edu_teacher = require("app.function.edu_teacher")
  local edu_setting = require("app.function.edu_setting")
  local teacher_info = edu_teacher.get_by_id(pint("id"),edu_id,conn)
  if teacher_info == nil then
      conn:close()
      return ""
  end
  local domain_assets_cn = edu_setting.get_assets_domain_cn(edu_id,conn)
  local photos = {}
  if teacher_info.photo and type(teacher_info.photo) == "string" and teacher_info.photo ~= "" then
    local ok, decoded = pcall(function() return cjson.decode(teacher_info.photo) end)
    if ok and type(decoded) == "table" then
      photos = decoded
    end
  end
  local content = "<div><div class='home-img'><img src='"..domain_assets_cn.."/".. teacher_info.avatar.."' class='img-fluid bg-img' alt=''></div></div>"
  for i,v in ipairs(photos) do
      if type(v) == "string" then
          content = content..[[<div>
              <div class="home-img">
                  <img src="]]..domain_assets_cn.."/"..v..[[" class="img-fluid bg-img" alt="">
              </div>
          </div>
          ]] 
      end
  end
  conn:close()
  return content
  -- return "<h1>卧槽</h1>"
end
M.regist = function(env)
    for key, value in pairs(M) do
        if type(value) == "function" and key ~= "functions" and key ~= "get_all_functions" then
            env[key] = value
        end
    end
    return env
end
return M