nvim: Add keybindings for LSP

LSP has a lot of functionality that I would benefit from taking
advantage of, this adds bindings for a bunch of that and which-key
support so I can figure out which key does what.

Signed-off-by: Nicholas Mello <nick@nmello.dev>

nvim/lazy-lock.json

@@ -12,5 +12,6 @@
   "oil.nvim": { "branch": "master", "commit": "bbad9a76b2617ce1221d49619e4e4b659b3c61fc" },
   "plenary.nvim": { "branch": "master", "commit": "b9fd5226c2f76c951fc8ed5923d85e4de065e509" },
   "telescope-fzf-native.nvim": { "branch": "main", "commit": "1f08ed60cafc8f6168b72b80be2b2ea149813e55" },
-  "telescope.nvim": { "branch": "master", "commit": "a0bbec21143c7bc5f8bb02e0005fa0b982edc026" }
+  "telescope.nvim": { "branch": "master", "commit": "a0bbec21143c7bc5f8bb02e0005fa0b982edc026" },
+  "which-key.nvim": { "branch": "main", "commit": "370ec46f710e058c9c1646273e6b225acf47cbed" }
 }

nvim/lua/plugins/lsp.lua

@@ -7,6 +7,47 @@ vim.api.nvim_create_autocmd("BufWritePre", {
 return {
   {
     "neovim/nvim-lspconfig",
+    keys = {
+      -- Navigation
+      { "<leader>dgd",   vim.lsp.buf.definition,       desc = "Go to Definition" },
+      { "<leader>dgD",   vim.lsp.buf.declaration,      desc = "Go to Declaration" },
+      { "<leader>dgi",   vim.lsp.buf.implementation,   desc = "Go to Implementation" },
+      { "<leader>dgt",   vim.lsp.buf.type_definition,  desc = "Go to Type Definition" },
+      { "<leader>dgr",   vim.lsp.buf.references,       desc = "List References" },
+      { "<leader>dgs",   vim.lsp.buf.document_symbol,  desc = "Document Symbols" },
+      { "<leader>dgS",   vim.lsp.buf.workspace_symbol, desc = "Workspace Symbols" },
+
+      -- Hover & help
+      { "<leader>dgh",   vim.lsp.buf.hover,            desc = "Hover Documentation" },
+      { "<leader>dgsig", vim.lsp.buf.signature_help,   desc = "Signature Help" },
+
+      -- Refactoring
+      { "<leader>drn",   vim.lsp.buf.rename,           desc = "Rename Symbol" },
+      { "<leader>dca",   vim.lsp.buf.code_action,      desc = "Code Action" },
+      {
+        "<leader>doi",
+        function()
+          vim.lsp.buf.code_action({
+            context = {
+              only = { "source.organizeImports" },
+              diagnostics = {},
+            }
+          })
+        end,
+        desc = "Organize Imports"
+      },
+
+      -- Diagnostics
+      { "<leader>de",  vim.diagnostic.open_float,                           desc = "Show Line Diagnostics" },
+      { "<leader>ddl", vim.diagnostic.setloclist,                           desc = "List Diagnostics" },
+
+      -- Formatting
+      { "<leader>df",  function() vim.lsp.buf.format({ async = true }) end, desc = "Format Document" },
+
+      -- Advanced: highlight usage
+      { "<leader>dhl", vim.lsp.buf.document_highlight,                      desc = "Highlight Symbol" },
+      { "<leader>dhc", vim.lsp.buf.clear_references,                        desc = "Clear Highlights" },
+    },
     dependencies = {
       {
         "folke/lazydev.nvim",

nvim/lua/plugins/whichkey.lua

@@ -0,0 +1,19 @@
+return {
+  "folke/which-key.nvim",
+  event = "VeryLazy",
+  opts = {
+    triggers = { "<leader>", " " },
+    defaults = {
+      ["<leader>d"] = { name = "+LSP" },
+    },
+  },
+  keys = {
+    {
+      "<leader>?",
+      function()
+        require("which-key").show({ global = false })
+      end,
+      desc = "Buffer Local Keymaps (which-key)",
+    },
+  },
+}