From 466b79672cc365f276123af9e4db0593b5e00b48 Mon Sep 17 00:00:00 2001
From: Aditya <bluenerd@protonmail.com>
Date: Mon, 4 Mar 2024 19:05:45 +0530
Subject: [PATCH] add completion

---
 config/completion/cmp.nix | 167 ++++++++++++++++++++++++++++++++++++++
 config/default.nix        |   2 +
 2 files changed, 169 insertions(+)
 create mode 100644 config/completion/cmp.nix

diff --git a/config/completion/cmp.nix b/config/completion/cmp.nix
new file mode 100644
index 0000000..6e9ef42
--- /dev/null
+++ b/config/completion/cmp.nix
@@ -0,0 +1,167 @@
+{
+  plugins = {
+    nvim-cmp = {
+      enable = true;
+      autoEnableSources = true;
+      experimental = {
+        ghost_text = true;
+      };
+      performance = {
+        debounce = 60;
+        fetchingTimeout = 200;
+        maxViewEntries = 30;
+      };
+      snippet = {
+        expand = "luasnip";
+      };
+      formatting = {
+        fields = ["kind" "abbr" "menu"];
+        expandableIndicator = true;
+      };
+      window = {
+        completion = {
+          border = "rounded";
+          winhighlight = "Normal:Normal,FloatBorder:FloatBorder,CursorLine:Visual,Search:None";
+        };
+        documentation = {
+          border = "rounded";
+        };
+      };
+      sources = [
+        {
+          name = "nvim_lsp"; # lsp
+        }
+        {
+          name = "buffer"; # text within current buffer
+          option.get_bufnrs.__raw = "vim.api.nvim_list_bufs";
+          keywordLength = 3;
+        }
+        {
+          name = "path"; # file system paths
+          keywordLength = 3;
+        }
+        {
+          name = "luasnip"; # snippets
+          keywordLength = 3;
+        }
+      ];
+
+      mapping = {
+        "<Tab>" = {
+          modes = ["i" "s"];
+          action = ''
+             function(fallback)
+             	if cmp.visible() then
+            		cmp.select_next_item()
+            elseif luasnip.expand_or_jumpable() then
+            	luasnip.expand_or_jump()
+            else
+            fallback()
+                 end
+            end
+          '';
+        };
+        "<S-Tab>" = {
+          modes = ["i" "s"];
+          action = ''
+                 function(fallback)
+            	if cmp.visible() then
+            		cmp.select_prev_item()
+            	elseif luasnip.jumpable(-1) then
+            		luasnip.jump(-1)
+            	else
+            		fallback()
+            	end
+            end
+          '';
+        };
+        "<C-j>" = {
+          action = "cmp.mapping.select_next_item()";
+        };
+        "<C-k>" = {
+          action = "cmp.mapping.select_prev_item()";
+        };
+        "<C-e>" = {
+          action = "cmp.mapping.abort()";
+        };
+        "<C-b>" = {
+          action = "cmp.mapping.scroll_docs(-4)";
+        };
+        "<C-f>" = {
+          action = "cmp.mapping.scroll_docs(4)";
+        };
+        "<C-Space>" = {
+          action = "cmp.mapping.complete()";
+        };
+        "<CR>" = {
+          action = "cmp.mapping.confirm({ select = true })";
+        };
+        "<S-CR>" = {
+          action = "cmp.mapping.confirm({ behavior = cmp.ConfirmBehavior.Replace, select = true })";
+        };
+      };
+    };
+    cmp-nvim-lsp = {enable = true;}; # lsp
+    cmp-buffer = {enable = true;};
+    cmp-path = {enable = true;}; # file system paths
+    cmp_luasnip = {enable = true;}; # snippets
+    cmp-cmdline = {enable = false;}; # autocomplete for cmdline
+  };
+  extraConfigLua = ''
+      luasnip = require("luasnip")
+      kind_icons = {
+        Text = "󰊄",
+        Method = "",
+        Function = "󰡱",
+        Constructor = "",
+        Field = "",
+        Variable = "󱀍",
+        Class = "",
+        Interface = "",
+        Module = "󰕳",
+        Property = "",
+        Unit = "",
+        Value = "",
+        Enum = "",
+        Keyword = "",
+        Snippet = "",
+        Color = "",
+        File = "",
+        Reference = "",
+        Folder = "",
+        EnumMember = "",
+        Constant = "",
+        Struct = "",
+        Event = "",
+        Operator = "",
+        TypeParameter = "",
+      } 
+
+    local cmp = require'cmp'
+
+      -- Use buffer source for `/` (if you enabled `native_menu`, this won't work anymore).
+      cmp.setup.cmdline({'/', "?" }, {
+          sources = {
+          { name = 'buffer' }
+          }
+          })
+
+    -- Set configuration for specific filetype.
+      cmp.setup.filetype('gitcommit', {
+          sources = cmp.config.sources({
+              { name = 'cmp_git' }, -- You can specify the `cmp_git` source if you were installed it.
+              }, {
+              { name = 'buffer' },
+              })
+          })
+
+    -- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
+      cmp.setup.cmdline(':', {
+          sources = cmp.config.sources({
+              { name = 'path' }
+              }, {
+              { name = 'cmdline' }
+              }),
+          })  '';
+}
+
diff --git a/config/default.nix b/config/default.nix
index cdf7493..39143a8 100644
--- a/config/default.nix
+++ b/config/default.nix
@@ -6,6 +6,8 @@
     ./colorschemes/catppuccin.nix
     ./colorschemes/rose-pine.nix
 
+    ./completion/cmp.nix
+
     ./sets.nix
     ./dap/dap.nix
     ./keymaps.nix