From ad9c779b205981495bde3f676c7e0fe67493f87e Mon Sep 17 00:00:00 2001
From: pro100ton <pro100ton@gmail.com>
Date: Sat, 1 Feb 2025 17:02:46 +0300
Subject: [PATCH] Add basic luasnip config

---
 init.lua                       |  4 ++--
 lua/custom/completion.lua      | 22 ++++++++++++++++++++++
 lua/custom/luasnip.lua         | 33 +++++++++++++++++++++++++++++++++
 lua/custom/plugins/luasnip.lua |  9 +++++++++
 lua/custom/snippets/lua.lua    | 10 ++++++++++
 plugin/keymaps.lua             |  2 +-
 6 files changed, 77 insertions(+), 3 deletions(-)
 create mode 100644 lua/custom/luasnip.lua
 create mode 100644 lua/custom/plugins/luasnip.lua
 create mode 100644 lua/custom/snippets/lua.lua

diff --git a/init.lua b/init.lua
index 8b6bc7e..f5883da 100644
--- a/init.lua
+++ b/init.lua
@@ -1,7 +1,7 @@
 -- Making leader (<Leader>) key to space
-vim.g.mapleader = ","
+vim.g.mapleader = "\\"
 -- Making local leader (<LocalLeader>) key to backslash
-vim.g.maplocalleader = "\\"
+vim.g.maplocalleader = ""
 
 -- Bootstrap lazy.nvim
 local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
diff --git a/lua/custom/completion.lua b/lua/custom/completion.lua
index 72cb31e..ab16127 100644
--- a/lua/custom/completion.lua
+++ b/lua/custom/completion.lua
@@ -3,6 +3,10 @@
 -- menu: Show menu when completions available (more than 1)
 -- menuone: Show menu even when there is only 1 option
 -- noselect: Force user to select convinient option
+
+-- Load luasnip setup
+require "custom.luasnip"
+
 vim.opt.completeopt = { "menu", "menuone", "noselect" }
 
 local lspkind = require "lspkind"
@@ -25,6 +29,7 @@ local cmp = require "cmp"
 
 cmp.setup {
   sources = {
+    { name = "luasnip" },
     { name = "nvim_lsp" },
     { name = "path" },
     { name = "buffer" },
@@ -40,4 +45,21 @@ cmp.setup {
       { "i", "c" }
     ),
   },
+
+  -- Enable luasnip to handle snippet expansion for nvim-cmp
+  snippet = {
+    expand = function(args)
+      vim.snippet.expand(args.body)
+    end,
+  },
+
+  formatting = {
+    fields = { "abbr", "kind", "menu" },
+    expandable_indicator = true,
+    format = function(entry, vim_item)
+      -- Lspkind setup for icons
+      vim_item = kind_formatter(entry, vim_item)
+      return vim_item
+    end,
+  },
 }
diff --git a/lua/custom/luasnip.lua b/lua/custom/luasnip.lua
new file mode 100644
index 0000000..99235c6
--- /dev/null
+++ b/lua/custom/luasnip.lua
@@ -0,0 +1,33 @@
+local ls = require "luasnip"
+local types = require "luasnip.util.types"
+
+ls.config.set_config {
+  history = true,
+  updateevents = "TextChanged, TextChangedI",
+  enable_autosnippets = true
+}
+
+vim.keymap.set({ "i", "s" }, "<c-k>", function()
+  if ls.expand_or_jumpable() then
+    ls.expand_or_jump()
+  end
+end, { silent = true })
+
+vim.keymap.set({ "i", "s" }, "<c-j>", function()
+  if ls.jumpable() then
+    ls.jump(-1)
+  end
+end, { silent = true })
+
+vim.keymap.set({ "i", "s" }, "<c-l>", function()
+  if ls.choice_active() then
+    ls.change_choice(1)
+  end
+end, { silent = true })
+
+vim.keymap.set("n", "<leader><leader>s", "<cmd>source ~/.config/nvim_dev/lua/custom/luasnip.lua<CR>")
+
+-- Load custom snippets
+for _, ft_path in ipairs(vim.api.nvim_get_runtime_file("lua/custom/snippets/*.lua", true)) do
+  loadfile(ft_path)()
+end
diff --git a/lua/custom/plugins/luasnip.lua b/lua/custom/plugins/luasnip.lua
new file mode 100644
index 0000000..99006fc
--- /dev/null
+++ b/lua/custom/plugins/luasnip.lua
@@ -0,0 +1,9 @@
+return {
+  {
+    "L3MON4D3/LuaSnip",
+    -- follow latest release.
+    version = "v2.*", -- Replace <CurrentMajor> by the latest released major (first number of latest release)
+    -- install jsregexp (optional!).
+    build = "make install_jsregexp"
+  }
+}
diff --git a/lua/custom/snippets/lua.lua b/lua/custom/snippets/lua.lua
new file mode 100644
index 0000000..166600a
--- /dev/null
+++ b/lua/custom/snippets/lua.lua
@@ -0,0 +1,10 @@
+local ls = require "luasnip"
+
+
+print("hello from lua snips")
+
+ls.add_snippets("lua", {
+  ls.parser.parse_snippet("expand", "-- this is what was expanded kek"),
+  ls.parser.parse_snippet("pipa", "Pipasik"),
+})
+
diff --git a/plugin/keymaps.lua b/plugin/keymaps.lua
index 5af4f86..70d3e45 100644
--- a/plugin/keymaps.lua
+++ b/plugin/keymaps.lua
@@ -7,5 +7,5 @@ set("n", "<c-l>", "<c-w><c-l>")
 set("n", "<c-h>", "<c-w><c-h>")
 
 -- Bindings for reloading LUA files (used when working with lua files)
-set("n", "<leader>x", "<cmd>.lua<CR>", { desc = "Execute the current lne" })
+-- set("n", "<leader>x", "<cmd>.lua<CR>", { desc = "Execute the current lne" })
 set("n", "<leader><leader>x", "<cmd>source %<CR>", { desc = "Execute the current file" })