local kind_icons = {
  Text = "",
  Method = "󰆧",
  Function = "󰊕",
  Constructor = "",
  Field = "󰇽",
  Variable = "󰂡",
  Class = "󰠱",
  Interface = "",
  Module = "",
  Property = "󰜢",
  Unit = "",
  Value = "󰎠",
  Enum = "",
  Keyword = "󰌋",
  Snippet = "",
  Color = "󰏘",
  File = "󰈙",
  Reference = "",
  Folder = "󰉋",
  EnumMember = "",
  Constant = "󰏿",
  Struct = "",
  Event = "",
  Operator = "󰆕",
  TypeParameter = "󰅲",
}

local has_words_before = function()
  unpack = unpack or table.unpack
  local line, col = unpack(G.api.nvim_win_get_cursor(0))
  return col ~= 0 and G.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match('%s') == nil
end
local feedkey = function(key, mode)
  vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
end

return {
  {
    -- lsp的config
    "neovim/nvim-lspconfig",
    config = function()
      require 'lspconfig'.lua_ls.setup(require('lsp.lua'))
      require 'lspconfig'.clangd.setup(require('lsp.c'))
      -- require'lspconfig'.bash_ls.setup(require('lsp.bash'))
      require 'lspconfig'.pyright.setup(require('lsp.pyright'))
      G.map({
        { 'n', '<leader>rn', '<cmd>lua vim.lsp.buf.rename()<CR>' },

        { 'n', 'gd',         '<cmd>lua vim.lsp.buf.definition()<CR>' },
        { 'n', 'gh',         '<cmd>lua vim.lsp.buf.hover()<CR>' },
        { 'n', 'gD',         '<cmd>lua vim.lsp.buf.declaration()<CR>' },
        { 'n', 'gi',         '<cmd>lua vim.lsp.buf.implementation()<CR>' },
        { 'n', 'gr',         '<cmd>lua vim.lsp.buf.references()<CR>' },
        { 'n', '<C-I>',      '<cmd>lua vim.lsp.buf.format()<CR>' },

      })
    end

  },
  {
    -- lsp 下载器
    "williamboman/mason.nvim",
    config = function()
      require("mason").setup({})
    end
  },
  { --
    'simrat39/symbols-outline.nvim',
    config = function()
      local opts = {
        highlight_hovered_item = true,
        show_guides = true,
        auto_preview = false,
        position = 'right',
        relative_width = true,
        width = 25,
        auto_close = false,
        show_numbers = false,
        show_relative_numbers = false,
        show_symbol_details = true,
        preview_bg_highlight = 'Pmenu',
        autofold_depth = nil,
        auto_unfold_hover = true,
        fold_markers = { '', '' },
        wrap = false,
        keymaps = { -- These keymaps can be a string or a table for multiple keys
          close          = { "<Esc>", "q" },
          goto_location  = "<Cr>",
          focus_location = "h",
          hover_symbol   = "<C-space>",
          toggle_preview = "K",
          rename_symbol  = "r",
          code_actions   = "a",
          fold           = "o",
          unfold         = "l",
          fold_all       = "W",
          unfold_all     = "E",
          fold_reset     = "R",
        },
        lsp_blacklist = {},
        symbol_blacklist = {},
        symbols = {
          File = { icon = "", hl = "@text.uri" },
          Module = { icon = "", hl = "@namespace" },
          Namespace = { icon = "", hl = "@namespace" },
          Package = { icon = "", hl = "@namespace" },
          Class = { icon = "𝓒", hl = "@type" },
          Method = { icon = "ƒ", hl = "@method" },
          Property = { icon = "", hl = "@method" },
          Field = { icon = "", hl = "@field" },
          Constructor = { icon = "", hl = "@constructor" },
          Enum = { icon = "ℰ", hl = "@type" },
          Interface = { icon = "ﰮ", hl = "@type" },
          Function = { icon = "", hl = "@function" },
          Variable = { icon = "", hl = "@constant" },
          Constant = { icon = "", hl = "@constant" },
          String = { icon = "𝓐", hl = "@string" },
          Number = { icon = "#", hl = "@number" },
          Boolean = { icon = "⊨", hl = "@boolean" },
          Array = { icon = "", hl = "@constant" },
          Object = { icon = "⦿", hl = "@type" },
          Key = { icon = "🔐", hl = "@type" },
          Null = { icon = "NULL", hl = "@type" },
          EnumMember = { icon = "", hl = "@field" },
          Struct = { icon = "𝓢", hl = "@type" },
          Event = { icon = "🗲", hl = "@type" },
          Operator = { icon = "+", hl = "@operator" },
          TypeParameter = { icon = "𝙏", hl = "@parameter" },
          Component = { icon = "", hl = "@function" },
          Fragment = { icon = "", hl = "@constant" },
        },
      }
      require("symbols-outline").setup(opts)
      G.map({
        { "n", "<C-O>", "<cmd>SymbolsOutline<cr>" },
      })
    end
  },
  {
    -- lsp补全
    'hrsh7th/cmp-nvim-lsp', -- { name = 'nvim_lua' }
    'hrsh7th/cmp-buffer',   -- { name = 'buffer' },
    'hrsh7th/cmp-path',     -- { name = 'path' }
    'hrsh7th/cmp-cmdline',  -- { name = 'cmdline' }
    'hrsh7th/vim-vsnip',
    'hrsh7th/cmp-vsnip',
    'onsails/lspkind-nvim',
    {
      "hrsh7th/nvim-cmp",
      config = function()
        local cmp     = require('cmp')
        local lspkind = require('lspkind')
        cmp.setup {
          snippet = {
            expand = function(args)
              vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
            end,
          },
          sources = cmp.config.sources({
            { name = 'vnsip' },
            { name = 'nvim_lsp' },
            { name = 'buffer' },
            { name = 'path' },
            { name = 'cmdline' },
          }),
          mapping = cmp.mapping.preset.insert({
            ['<CR>'] = cmp.mapping.confirm({ select = true }),
            ["<c-n>"] = cmp.mapping(function(fallback)
              if cmp.visible() then
                cmp.select_next_item()
              elseif vim.fn["vsnip#available"](1) == 1 then
                feedkey("<Plug>(vsnip-expand-or-jump)", "")
              elseif has_words_before() then
                cmp.complete()
              else
                fallback()
              end
            end, { "i", "s" }),

            ["<n-p>"] = cmp.mapping(function()
              if cmp.visible() then
                cmp.select_prev_item()
              elseif vim.fn["vsnip#jumpable"](-1) == 1 then
                feedkey("<Plug>(vsnip-jump-prev)", "")
              end
            end, { "i", "s" }),
          }),
          window = {
          },
          fomatting = {
            format = lspkind.cmp_format({
              with_text = true,
              maxwidth = 50,
              mode = 'symbol',
              before = function(entry, vim_item)
                vim_item.kind = kind_icons[vim_item.kind]
                vim_item.menu = ({
                  buffer = "[Buffer]",
                  nvim_lsp = "[LSP]",
                })[entry.source.name]
                return vim_item
              end,
            })
          },
        }
        cmp.setup.cmdline('/', {
          view = {
            entries = { name = 'wildmenu', separator = '|' }
          },
        })
      end,
    },

    {
      -- 语法高亮 --
      'nvim-treesitter/nvim-treesitter',
      config = function()
        require 'nvim-treesitter.configs'.setup {
          ensure_installed = {},
          indent = { enable = true },
          sync_install = false,
          auto_install = true,
          highlight = {
            enable = true,
            disable = function(lang, buf)
              local max_filesize = 100 * 1024 -- 100 KB
              local ok, stats = pcall(G.loop.fs_stat, G.api.nvim_buf_get_name(buf))
              if ok and stats and stats.size > max_filesize then
                return true
              end
            end,
            additional_vim_regex_highlighting = false,
          },
          parsers = {
            html = {
              install_info = {
                url = "https://github.com/ikatyang/tree-sitter-vue",
                files = { "src/parser.c" },
                branch = "main"
              }
            }
          }
        }
      end
    },
  },
  {
    ""
  },
}