From 77e82698a3bc93c06f1517af566b0c8dd0ed5540 Mon Sep 17 00:00:00 2001
From: Matt Leong <mattleong91@gmail.com>
Date: Tue, 14 Dec 2021 12:21:42 -0800
Subject: [PATCH] feat(plugins): readd autocomplete from cosmic-ui

---
 lua/cosmic/core/pluginsInit.lua |   2 +-
 lua/cosmic/lsp/autocomplete.lua | 111 ++++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+), 1 deletion(-)
 create mode 100644 lua/cosmic/lsp/autocomplete.lua

diff --git a/lua/cosmic/core/pluginsInit.lua b/lua/cosmic/core/pluginsInit.lua
index b44991a..c28aa30 100644
--- a/lua/cosmic/core/pluginsInit.lua
+++ b/lua/cosmic/core/pluginsInit.lua
@@ -112,7 +112,7 @@ return packer.startup(function()
   use({
     'hrsh7th/nvim-cmp',
     config = function()
-      require('cosmic-ui').setup_autocomplete()
+      require('cosmic.lsp.autocomplete').init()
     end,
     requires = {
       { 'onsails/lspkind-nvim' },
diff --git a/lua/cosmic/lsp/autocomplete.lua b/lua/cosmic/lsp/autocomplete.lua
new file mode 100644
index 0000000..cf1fbab
--- /dev/null
+++ b/lua/cosmic/lsp/autocomplete.lua
@@ -0,0 +1,111 @@
+local utils = require('cosmic-ui.utils')
+local cosmic_ui = require('cosmic-ui')
+local M = {}
+
+local has_words_before = function()
+  local line, col = unpack(vim.api.nvim_win_get_cursor(0))
+  return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match('%s') == nil
+end
+
+local get_formatting = function()
+  local ok, _ = pcall(require, 'lspkind')
+  if not ok then
+    return {}
+  end
+
+  return {
+    format = require('lspkind').cmp_format({
+      with_text = true,
+      menu = {
+        buffer = '[buf]',
+        nvim_lsp = '[LSP]',
+        nvim_lua = '[VimApi]',
+        path = '[path]',
+        luasnip = '[snip]',
+      },
+    }),
+  }
+end
+
+M.init = function(provider_opts)
+  local cmp = require('cmp')
+  -- @TODO: support for vsnip, ultisnips
+  local default_cmp_opts = {
+    snippet = {
+      expand = function(args)
+        require('luasnip').lsp_expand(args.body)
+      end,
+    },
+    mapping = {
+      ['<C-d>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
+      ['<C-u>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' }),
+      ['<C-Space>'] = cmp.mapping(cmp.mapping.complete(), { 'i', 'c' }),
+      ['<C-e>'] = cmp.mapping({
+        i = cmp.mapping.abort(),
+        c = cmp.mapping.close(),
+      }),
+      -- disabled for autopairs mapping
+      ['<CR>'] = cmp.mapping.confirm({
+        behavior = cmp.ConfirmBehavior.Insert,
+        select = true,
+      }),
+      ['<Tab>'] = cmp.mapping(function(fallback)
+        if cmp.visible() then
+          cmp.select_next_item()
+        elseif require('luasnip').expand_or_jumpable() then
+          require('luasnip').expand_or_jump()
+        elseif has_words_before() then
+          cmp.complete()
+        else
+          fallback()
+        end
+      end, {
+        'i',
+        's',
+      }),
+      ['<S-Tab>'] = cmp.mapping(function(fallback)
+        if cmp.visible() then
+          cmp.select_prev_item()
+        elseif require('luasnip').jumpable(-1) then
+          require('luasnip').jump(-1)
+        else
+          fallback()
+        end
+      end, {
+        'i',
+        's',
+      }),
+    },
+    documentation = {
+      border = cosmic_ui.get_border(),
+      winhighlight = 'FloatBorder:FloatBorder,Normal:Normal',
+    },
+    experimental = {
+      ghost_text = true,
+    },
+    sources = cmp.config.sources({
+      { name = 'nvim_lsp' },
+      { name = 'nvim_lua' },
+      { name = 'buffer' },
+      { name = 'luasnip' },
+      { name = 'path' },
+    }),
+    formatting = get_formatting(),
+  }
+
+  vim.cmd([[
+  autocmd FileType TelescopePrompt lua require('cmp').setup.buffer { enabled = false }
+  ]])
+
+  local opts = utils.merge(default_cmp_opts, provider_opts or {})
+
+  cmp.setup(opts)
+
+  cmp.setup.cmdline('/', {
+    sources = {
+      { name = 'buffer' },
+    },
+  })
+end
+
+return M