nixos-combined-flake/modules/nixvim/plugins/lsp/cmp.nix

{
  plugins = {
    friendly-snippets = {
      enable = true;
    };
    luasnip = {
      enable = true;
      extraConfig = {
        enable_autosnippets = true;
        store_selection_keys = "<Tab>";
      };
      fromLua = [
        { paths = ../../snippets; }
      ];
    };
    lspkind = {
      enable = true;
      symbolMap = {
        Namespace = "󰌗";
        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 = "󰊄";
        Table = "";
        Object = "󰅩";
        Tag = "";
        Array = "[]";
        Boolean = "";
        Number = "";
        Null = "󰟢";
        String = "󰉿";
        Calendar = "";
        Watch = "󰥔";
        Package = "";
        Codeium = "";
        Copilot = "";
        TabNine = "";
      };
    };
    cmp = {
      enable = true;
      autoEnableSources = true;
      settings = {
        snippet.expand = ''
          function(args)
            require('luasnip').lsp_expand(args.body)
          end
        '';
        completion.completeopt = "menu,preview";
        sources = [
          { name = "luasnip"; }
          { name = "nvim_lsp"; }
          { name = "nvim_lsp_signature_help"; }
          { name = "nvim_lsp_document_symbol"; }
          { name = "codeium"; }
          { name = "path"; }
          { name = "buffer"; }
          { name = "treesitter"; }
        ];
        mapping = {
          __raw = ''
            cmp.mapping.preset.insert({
              ['<C-n>'] = cmp.mapping({
                c = function()
                  if cmp.visible() then
                    cmp.select_next_item({ behavior = cmp.SelectBehavior.Select })
                  else
                    vim.api.nvim_feedkeys(t('<Down>'), 'n', true)
                  end
                end,
                i = function(fallback)
                  if cmp.visible() then
                    cmp.select_next_item({ behavior = cmp.SelectBehavior.Select })
                  else
                    fallback()
                  end
                end
              }),
              ['<C-p>'] = cmp.mapping({
                c = function()
                  if cmp.visible() then
                      cmp.select_prev_item({ behavior = cmp.SelectBehavior.Select })
                  else
                      vim.api.nvim_feedkeys(t('<Up>'), 'n', true)
                  end
                end,
                i = function(fallback)
                  if cmp.visible() then
                      cmp.select_prev_item({ behavior = cmp.SelectBehavior.Select })
                  else
                      fallback()
                  end
                end
              }),
              ['<C-b>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), {'i', 'c'}),
              ['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), {'i', 'c'}),
              ['<C-Space>'] = cmp.mapping(cmp.mapping.complete(), {'i', 'c'}),
              ['<C-e>'] = cmp.mapping({ i = cmp.mapping.close(), c = cmp.mapping.close() }),
              ['<CR>'] = cmp.mapping.confirm({ select = true }),
              ['<Down>'] = cmp.mapping(cmp.mapping.select_next_item({ behavior = cmp.SelectBehavior.Select }), {'i'}),
              ['<Up>'] = cmp.mapping(cmp.mapping.select_prev_item({ behavior = cmp.SelectBehavior.Select }), {'i'}),
              ["<Tab>"] = cmp.mapping({ 
                c = function()
                  if cmp.visible() then
                    cmp.select_next_item({ behavior = cmp.SelectBehavior.Insert })
                  else
                    cmp.complete()
                  end
                end,
                i = function(fallback)
                  local has_words_before = function()
                    local unpack = unpack or table.unpack
                    local line, col = unpack(vim.api.nvim_win_get_cursor(0))
                    return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
                  end
                  if cmp.visible() then
                    cmp.select_next_item()
                  elseif require('luasnip').expand_or_jumpable() then
                    require('luasnip').expand_or_jump()
                  elseif has_words_before() then
                    cmp.complete()
                  else
                    fallback()
                  end
                end,
                s = function(fallback)
                  local has_words_before = function()
                    local unpack = unpack or table.unpack
                    local line, col = unpack(vim.api.nvim_win_get_cursor(0))
                    return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
                  end
                  if cmp.visible() then
                    cmp.select_next_item()
                  elseif require('luasnip').expand_or_jumpable() then
                    require('luasnip').expand_or_jump()
                  elseif has_words_before() then
                    cmp.complete()
                  else
                    fallback()
                  end
                end
              }),
              ["<S-Tab>"] = cmp.mapping({
                c = function()
                  if cmp.visible() then
                    cmp.select_prev_item({ behavior = cmp.SelectBehavior.Insert })
                  else
                    cmp.complete()
                  end
                end,
                i = function(fallback)
                  if cmp.visible() then
                    cmp.select_prev_item()
                  elseif require('luasnip').jumpable(-1) then
                    require('luasnip').jump(-1)
                  else
                    fallback()
                  end
                end,
                s = function(fallback)
                  if cmp.visible() then
                    cmp.select_prev_item()
                  elseif require('luasnip').jumpable(-1) then
                    require('luasnip').jump(-1)
                  else
                    fallback()
                  end
                end
              }),
            })
          '';
        };
      };
      cmdline = {
        "/" = {
          sources = [
            {
              name = "buffer";
            }
          ];
        };
        ":" = {
          completion.completeopt = "menu,menuone,noselect";
          mapping = {
            __raw = ''
              cmp.mapping.preset.cmdline({
                ["<CR>"] = cmp.mapping.confirm { select = true },
              })
            '';
          };
          sources = [
            {
              name = "path";
            }
            {
              name = "cmdline";
            }
          ];
        };
        "?" = {
          mapping = {
            completion.completeopt = "menu,menuone,noselect";
            __raw = "cmp.mapping.preset.cmdline({
              ['<C-b>'] = cmp.mapping.scroll_docs(-4),
              ['<C-f>'] = cmp.mapping.scroll_docs(4),
              ['<C-Space>'] = cmp.mapping.complete(),
              ['<C-e>'] = cmp.mapping.abort(),
              ['<CR>'] = cmp.mapping.confirm({ select = true }),
            })";
          };
          sources = [
            {
              name = "cmdline";
              ignoreCmds = [
                "Man"
                "!"
              ];
            }
          ];
        };
      };
    };
  };
}