nix-config/modules/nixvim/lsp.nix

{ pkgs, ... }:

{
  plugins.lspconfig.enable = true;

  lsp = {
    enable = true;

    servers = {
      lua_ls = {
        enable = true;
        package = pkgs.lua-language-server;
        packageFallback = true;
      };
      nil_ls = {
        enable = true;
        package = pkgs.nil;
        packageFallback = true;
      };
      ts_ls = {
        enable = true;
        package = pkgs.typescript-language-server;
        packageFallback = true;
      };
      jsonls = {
        enable = true;
        package = pkgs.vscode-langservers-extracted;
        packageFallback = true;
      };
      astro = {
        enable = true;
        package = pkgs.astro-language-server;
        packageFallback = true;
      };
      eslint = {
        enable = true;
        package = pkgs.vscode-langservers-extracted;
        packageFallback = true;
        config = {
          root_markers = [
            ".eslintrc"
            ".eslintrc.js"
            ".eslintrc.cjs"
            ".eslintrc.yaml"
            ".eslintrc.yml"
            ".eslintrc.json"
            "eslint.config.js"
            "eslint.config.mjs"
            "eslint.config.cjs"
            "eslint.config.ts"
            "eslint.config.mts"
            "eslint.config.cts"
          ];
          settings = {
            validate = "on";
            useESLintClass = false;
            experimental = {
              useFlatConfig = false;
            };
            codeActionOnSave = {
              enable = false;
              mode = "all";
            };
            format = true;
            quiet = false;
            onIgnoredFiles = "off";
            rulesCustomizations = { };
            run = "onType";
            problems = {
              shortenToSingleLine = false;
            };
            nodePath = "";
            workingDirectory = {
              mode = "auto";
            };
            codeAction = {
              disableRuleComment = {
                enable = true;
                location = "separateLine";
              };
              showDocumentation = {
                enable = true;
              };
            };
          };
          handlers = {
            "eslint/openDoc".__raw = /* lua */ ''
              function(_, result)
                if result then
                  vim.ui.open(result.url)
                end
                return {}
              end
            '';
            "eslint/confirmESLintExecution" = /* lua */ ''
              function(_, result)
                if not result then
                  return
                end
                return 4 -- approved
              end
            '';
            "eslint/probeFailed" = /* lua */ ''
              function()
                vim.notify("[lspconfig] ESLint probe failed.", vim.log.levels.WARN)
                return {}
              end
            '';
            "eslint/noLibrary" = /* lua */ ''
              function()
                vim.notify("[lspconfig] Unable to find ESLint library.", vim.log.levels.WARN)
                return {}
              end
            '';
          };
          before_init.__raw = /* lua */ ''
            function(_, config)
              local eslint_config_files = {
                ".eslintrc",
                ".eslintrc.js",
                ".eslintrc.cjs",
                ".eslintrc.yaml",
                ".eslintrc.yml",
                ".eslintrc.json",
                "eslint.config.js",
                "eslint.config.mjs",
                "eslint.config.cjs",
                "eslint.config.ts",
                "eslint.config.mts",
                "eslint.config.cts",
              }
              -- The "workspaceFolder" is a VSCode concept. It limits how far the
              -- server will traverse the file system when locating the ESLint config
              -- file (e.g., .eslintrc).
              local root_dir = config.root_dir

              if root_dir then
                config.settings = config.settings or {}
                config.settings.workspaceFolder = {
                  uri = root_dir,
                  name = vim.fn.fnamemodify(root_dir, ":t"),
                }

                -- Support flat config files
                -- They contain 'config' in the file name
                local flat_config_files = vim.tbl_filter(function(file)
                  return file:match("config")
                end, eslint_config_files)

                for _, file in ipairs(flat_config_files) do
                  local found_files = vim.fn.globpath(root_dir, file, true, true)

                  -- Filter out files inside node_modules
                  local filtered_files = {}
                  for _, found_file in ipairs(found_files) do
                    if string.find(found_file, "[/\\]node_modules[/\\]") == nil then
                      table.insert(filtered_files, found_file)
                    end
                  end

                  if #filtered_files > 0 then
                    config.settings.experimental = config.settings.experimental or {}
                    config.settings.experimental.useFlatConfig = true
                    break
                  end
                end

                -- Support Yarn2 (PnP) projects
                local pnp_cjs = root_dir .. "/.pnp.cjs"
                local pnp_js = root_dir .. "/.pnp.js"
                if vim.uv.fs_stat(pnp_cjs) or vim.uv.fs_stat(pnp_js) then
                  local cmd = config.cmd
                  config.cmd = vim.list_extend({ "yarn", "exec" }, cmd)
                end
              end
            end
          '';
        };
      };
      biome = {
        enable = true;
        package = pkgs.biome;
        packageFallback = true;
      };
    };

    keymaps = [
      {
        key = "<leader>ca";
        lspBufAction = "code_action";
      }
      {
        key = "<leader>e";
        action = "<cmd>lua vim.diagnostic.open_float()<cr>";
      }
    ];
  };

  # Define diagnostic appearance
  diagnostic.settings = {
    virtual_text = false;
    signs = true;
    underline = true;
    update_in_insert = false;
    severity_sort = false;
  };
}