From 7906ecc0e38ff6b1be54668e49ea10906b743bc1 Mon Sep 17 00:00:00 2001
From: Syndamia <kamen@syndamia.com>
Date: Sun, 15 Sep 2024 09:49:48 +0300
Subject: feat(plugins): Properly implemented lsp

---
 lua/plugins/lsp.lua | 102 ++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 92 insertions(+), 10 deletions(-)

(limited to 'lua/plugins/lsp.lua')

diff --git a/lua/plugins/lsp.lua b/lua/plugins/lsp.lua
index 8144527..d778448 100644
--- a/lua/plugins/lsp.lua
+++ b/lua/plugins/lsp.lua
@@ -9,8 +9,10 @@ vim.api.nvim_create_autocmd({ "CursorHold", "CursorHoldI" }, { callback = functi
 end})
 
 return {
+	-- Syntax parsing (for highlighting)
 	{
-		"nvim-treesitter/nvim-treesitter", -- Advanced syntax parsing
+		"nvim-treesitter/nvim-treesitter",
+		lazy = false,
 		build = ":TSUpdate",
 		opts = {
 			ensure_installed = "all",
@@ -23,19 +25,99 @@ return {
 			require("nvim-treesitter.configs").setup(opts)
 		end,
 	},
+	-- LSP server utilisation
 	{
 		"neovim/nvim-lspconfig",
-		enabled = false, -- Figure out config property
-		event = "LazyFile",
-		-- dependencies = {
-		-- 	"mason.nvim",
-		-- 	{ "williamboman/mason-lspconfig.nvim", config = function() end },
-		-- },
+		dependencies = { 'VonHeikemen/lsp-zero.nvim' },
+		lazy = true,
 		opts = {
-			servers = {
-				awk_ls = { settings = {}, },
+			awk_ls = { },
+			lua_ls = { },
+		},
+		config = function(_, opts)
+			for k,v in pairs(opts) do
+				require("lspconfig")[k].setup(v)
+			end
+		end,
+	},
+	-- Auto-completion
+	{
+		'hrsh7th/cmp-nvim-lsp',
+		config = true,
+		lazy = true
+	},
+	{
+		'hrsh7th/nvim-cmp',
+		lazy = false,
+		opts = {
+			sources = { { name = 'nvim_lsp' } },
+			snippet = {
+				expand = function(args)
+				  vim.snippet.expand(args.body)
+				end,
+			},
+		},
+		config = function(_, opts)
+			local cmp = require('cmp')
+			opts.mapping = cmp.mapping.preset.insert({
+			-- 	-- `Enter` key to confirm completion
+			-- 	['<CR>'] = cmp.mapping.confirm({select = false}),
+			--
+			-- 	-- Ctrl+Space to trigger completion menu
+				['<C-Space>'] = cmp.mapping.complete(),
+			--
+			-- 	-- Navigate between snippet placeholder
+			-- 	['<C-f>'] = cmp_action.vim_snippet_jump_forward(),
+			-- 	['<C-b>'] = cmp_action.vim_snippet_jump_backward(),
+			--
+			-- 	-- Scroll up and down in the completion documentation
+			-- 	['<C-u>'] = cmp.mapping.scroll_docs(-4),
+			-- 	['<C-d>'] = cmp.mapping.scroll_docs(4),
+			})
+			cmp.setup(opts)
+		end,
+	},
+	-- Helper functions
+	{
+		'VonHeikemen/lsp-zero.nvim',
+		branch = 'v3.x',
+		lazy = true,
+		dependencies = { 'hrsh7th/cmp-nvim-lsp' },
+		opts = {
+			sign_text = true,
+			capabailities = "",
+			lsp_attach = function(client, bufnr)
+				local opts = {buffer = bufnr}
+
+				vim.keymap.set('n', 'K', '<cmd>lua vim.lsp.buf.hover()<cr>', opts)
+				vim.keymap.set('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<cr>', opts)
+				vim.keymap.set('n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<cr>', opts)
+				vim.keymap.set('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<cr>', opts)
+				vim.keymap.set('n', 'go', '<cmd>lua vim.lsp.buf.type_definition()<cr>', opts)
+				vim.keymap.set('n', 'gr', '<cmd>lua vim.lsp.buf.references()<cr>', opts)
+				vim.keymap.set('n', 'gs', '<cmd>lua vim.lsp.buf.signature_help()<cr>', opts)
+				vim.keymap.set('n', '<F2>', '<cmd>lua vim.lsp.buf.rename()<cr>', opts)
+				vim.keymap.set({'n', 'x'}, '<F3>', '<cmd>lua vim.lsp.buf.format({async = true})<cr>', opts)
+				vim.keymap.set('n', '<F4>', '<cmd>lua vim.lsp.buf.code_action()<cr>', opts)
+			end,
+		},
+		config = function(_, opts)
+			opts.capabilities = require('cmp_nvim_lsp').default_capabilities()
+			require("lsp-zero").extend_lspconfig(opts)
+		end,
+	},
+	-- Download plugins automatically
+	{ 'williamboman/mason.nvim', config = true, },
+	{
+		'williamboman/mason-lspconfig.nvim',
+		lazy = false,
+		dependencies = { 'neovim/nvim-lspconfig' },
+		opts = {
+			handlers = {
+				function(server_name)
+					require('lspconfig')[server_name].setup({})
+				end,
 			},
 		},
-		setup = {},
 	},
 }
-- 
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