local luasnip = require("luasnip")
local cmp = require'cmp'
cmp.setup({
  mapping = {
    ['<C-p>'] = cmp.mapping.select_prev_item(),
    ['<C-n>'] = cmp.mapping.select_next_item(),
    ['<C-k>'] = cmp.mapping.scroll_docs(-4),
    ['<C-j>'] = cmp.mapping.scroll_docs(4),
    ['<C-Space>'] = cmp.mapping.complete(),
    ['<C-e>'] = cmp.mapping.abort(),
    ['<CR>'] = cmp.mapping.confirm({ select = true }),
    ["<C-k>"] = cmp.mapping(function(fallback)
      if luasnip.expand_or_jumpable() then
        luasnip.expand_or_jump()
      elseif has_words_before() then
        cmp.complete()
      else
        fallback()
      end
    end, { "i", "s" }),

    ["<C-j>"] = cmp.mapping(function(fallback)
      if luasnip.jumpable(-1) then
        luasnip.jump(-1)
      else
        fallback()
      end
    end, { "i", "s" }),
  },

  sources = {
    { name = 'nvim_lsp' },
    { name = 'luasnip' },
    { name = 'nvim_lua' },
    { name = 'buffer' },
    { name = 'path' },
  },

  window = {
    completion = cmp.config.window.bordered(),
    -- documentation = cmp.config.window.bordered(),
  },

  formatting = {
  },

  snippet = {
    expand = function(args)
      require'luasnip'.lsp_expand(args.body)
    end,
  },

  experimental = {
    native_menu = false,
    ghost_text = true
  },
})

-- Set configuration for specific filetype.
cmp.setup.filetype('gitcommit', {
  sources = cmp.config.sources({
    { name = 'cmp_git' }, -- You can specify the `cmp_git` source if you were installed it.
  }, {
    { name = 'buffer' },
  })
})

-- Use buffer source for `/` (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline('/', {
  mapping = cmp.mapping.preset.cmdline(),
  sources = {
    { name = 'buffer' }
  }
})

-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(':', {
  mapping = cmp.mapping.preset.cmdline(),
  sources = cmp.config.sources({
    { name = 'path' }
  }, {
    { name = 'cmdline' }
  })
})