From 4a5d7fce1e745e76a1fb24a412e9ae5e5e65fd73 Mon Sep 17 00:00:00 2001
From: ViViDboarder <ViViDboarder@gmail.com>
Date: Thu, 30 Sep 2021 10:58:22 -0700
Subject: [PATCH] nvim: use nvim-cmp for completion

---
 neovim/lua/_bindings.lua          |  2 ++
 neovim/lua/plugins.lua            | 13 +++++++++-
 neovim/lua/plugins/completion.lua | 41 ++++++++++++++++++-------------
 neovim/lua/plugins/lsp.lua        |  8 ++++++
 4 files changed, 46 insertions(+), 18 deletions(-)

diff --git a/neovim/lua/_bindings.lua b/neovim/lua/_bindings.lua
index 5ff405f..04a9e78 100644
--- a/neovim/lua/_bindings.lua
+++ b/neovim/lua/_bindings.lua
@@ -51,6 +51,8 @@ function _G.complete_space()
         return utils.t("<Plug>(completion_trigger)")
     elseif utils.is_plugin_loaded("nvim-compe") then
         return vim.fn["compe#complete"]()
+    elseif utils.is_plugin_loaded("nvim-cmp") then
+        return utils.t("<Plug>(cmp_complete)")
     else
         return utils.t("<C-x><C-o>")
     end
diff --git a/neovim/lua/plugins.lua b/neovim/lua/plugins.lua
index acd99a4..3629038 100644
--- a/neovim/lua/plugins.lua
+++ b/neovim/lua/plugins.lua
@@ -143,9 +143,20 @@ return require('packer').startup(function()
     --]]
 
     -- Completion
+    --[[
     use {
         "nvim-lua/completion-nvim",
-        config = function() require("utils").require_with_local("plugins.completion") end,
+        config = function() require("plugins.completion").config_complete() end,
+    }
+    --]]
+    use {
+        "hrsh7th/nvim-cmp",
+        config = function() require("plugins.completion").config_cmp() end,
+        requires = {
+            "hrsh7th/cmp-nvim-lsp",
+            "hrsh7th/cmp-buffer",
+            "f3fora/cmp-spell",
+        }
     }
 
     -- Fuzzy Finder
diff --git a/neovim/lua/plugins/completion.lua b/neovim/lua/plugins/completion.lua
index 552c1c9..bb389cc 100644
--- a/neovim/lua/plugins/completion.lua
+++ b/neovim/lua/plugins/completion.lua
@@ -1,24 +1,31 @@
--- TODO: Determine if keeping this
---[[
-local function config_compe()
-    require("compe").setup{
-        enabled = true,
-        autocomplete = true,
-        source = {
-            path = true,
-            buffer = true,
-            calc = true,
-            tags = true,
-            spell = true,
-            nvim_lsp = true,
-            nvim_lua = true,
+local M = {}
+
+function M.config_cmp()
+    vim.o.completeopt = "menuone,noinsert,noselect"
+    local cmp = require("cmp")
+    cmp.setup {
+        completion = {
+            completeopt = "menuone,noinsert,noselect",
+            autocomplete = false,
+        },
+        sources = {
+            {name = "nvim_lsp"},
+            {name = "buffer"},
+            {name = "spell"},
         },
     }
+
+    -- Add a plug mapping to use in C-Space binding
+    vim.api.nvim_set_keymap(
+        "i",
+        "<Plug>(cmp_complete)",
+        "<cmd>lua require('cmp').complete()<CR>",
+        {silent = true, noremap = true}
+    )
 end
---]]
 
 -- TODO: Some issue with tags completion maybe compe is better?
-local function config_complete()
+function M.config_complete()
     vim.o.completeopt = "menuone,noinsert,noselect"
     -- shortmess+=c
     vim.g.completion_enable_auto_popup = 0
@@ -31,4 +38,4 @@ local function config_complete()
     ]])
 end
 
-config_complete()
+return M
diff --git a/neovim/lua/plugins/lsp.lua b/neovim/lua/plugins/lsp.lua
index 0edbdd1..b310d6b 100644
--- a/neovim/lua/plugins/lsp.lua
+++ b/neovim/lua/plugins/lsp.lua
@@ -78,8 +78,16 @@ local function config_lsp()
     }
     local lsp_config = require("lspconfig")
 
+    -- Maybe update capabilities
+    local capabilities = vim.lsp.protocol.make_client_capabilities()
+    if utils.is_plugin_loaded("cmp-nvim-lsp") then
+        capabilities = require("cmp_nvim_lsp").update_capabilities(
+            capabilities, {snippetSupport = false})
+    end
+
     for _, ls in ipairs(language_servers) do
         lsp_config[ls].setup{
+            capabilities = capabilities,
             on_attach=default_attach,
             settings={
                 pylsp={