LazyVim.on_very_lazy(function()
  vim.filetype.add({
    extension = { mdx = "markdown.mdx" },
  })
end)
return {
  recommended = function()
    return LazyVim.extras.wants({
      ft = { "markdown", "markdown.mdx" },
      root = "README.md",
    })
  end,
  {
    "stevearc/conform.nvim",
    optional = true,
    opts = {
      formatters = {
        ["markdown-toc"] = {
          condition = function(_, ctx)
            for _, line in ipairs(vim.api.nvim_buf_get_lines(ctx.buf, 0, -1, false)) do
              if line:find("<!%-%- toc %-%->") then
                return true
              end
            end
          end,
        },
        ["markdownlint-cli2"] = {
          condition = function(_, ctx)
            local diag = vim.tbl_filter(function(d)
              return d.source == "markdownlint"
            end, vim.diagnostic.get(ctx.buf))
            return #diag > 0
          end,
        },
      },
      formatters_by_ft = {
        ["markdown"] = { "prettier", "markdownlint-cli2", "markdown-toc" },
        ["markdown.mdx"] = { "prettier", "markdownlint-cli2", "markdown-toc" },
      },
    },
  },
  {
    "williamboman/mason.nvim",
    opts = { ensure_installed = { "markdownlint-cli2", "markdown-toc" } },
  },
  {
    "nvimtools/none-ls.nvim",
    optional = true,
    opts = function(_, opts)
      local nls = require("null-ls")
      opts.sources = vim.list_extend(opts.sources or {}, {
        nls.builtins.diagnostics.markdownlint_cli2,
      })
    end,
  },
  {
    "mfussenegger/nvim-lint",
    optional = true,
    opts = {
      linters_by_ft = {
        markdown = { "markdownlint-cli2" },
      },
    },
  },
  {
    "neovim/nvim-lspconfig",
    opts = {
      servers = {
        marksman = {},
      },
    },
  },

  -- Markdown preview
  {
    "iamcco/markdown-preview.nvim",
    cmd = { "MarkdownPreviewToggle", "MarkdownPreview", "MarkdownPreviewStop" },
    build = function()
      vim.fn["mkdp#util#install"]()
    end,
    keys = {
      {
        "<leader>cp",
        ft = "markdown",
        "<cmd>MarkdownPreviewToggle<cr>",
        desc = "Markdown Preview",
      },
    },
    config = function()
      vim.cmd([[do FileType]])
    end,
  },

  {
    "lukas-reineke/headlines.nvim",
    opts = function()
      local opts = {}
      for _, ft in ipairs({ "markdown", "norg", "rmd", "org" }) do
        opts[ft] = {
          headline_highlights = {},
          -- disable bullets for now. See https://github.com/lukas-reineke/headlines.nvim/issues/66
          bullets = {},
          quote_string = false,
        }
        for i = 1, 6 do
          local hl = "Headline" .. i
          vim.api.nvim_set_hl(0, hl, { link = "Headline", default = true })
          table.insert(opts[ft].headline_highlights, hl)
        end
      end
      return opts
    end,
    ft = { "markdown", "norg", "rmd", "org" },
    config = function(_, opts)
      -- PERF: schedule to prevent headlines slowing down opening a file
      vim.schedule(function()
        require("headlines").setup(opts)
        require("headlines").refresh()
      end)
    end,
  },
}