if not vim.fn.executable("go") then
  return
end

-- adapted from https://www.lazyvim.org/extras/lang/go
return {
  {
    "nvim-treesitter/nvim-treesitter",
    opts = function(_, opts)
      vim.list_extend(opts.ensure_installed, {
        "go",
        "gomod",
        "gowork",
        "gosum",
      })
    end,
  },
  {
    "neovim/nvim-lspconfig",
    opts = {
      servers = {
        gopls = {
          keys = {
            -- Workaround for the lack of a DAP strategy in neotest-go: https://github.com/nvim-neotest/neotest-go/issues/12
            { "<leader>td", "<cmd>lua require('dap-go').debug_test()<CR>", desc = "Debug Nearest (Go)" },
          },
          settings = {
            gopls = {
              gofumpt = true,
              codelenses = {
                gc_details = false,
                generate = true,
                regenerate_cgo = true,
                run_govulncheck = true,
                test = true,
                tidy = true,
                upgrade_dependency = true,
                vendor = true,
              },
              hints = {
                assignVariableTypes = true,
                compositeLiteralFields = true,
                compositeLiteralTypes = true,
                constantValues = true,
                functionTypeParameters = true,
                parameterNames = true,
                rangeVariableTypes = true,
              },
              analyses = {
                fieldalignment = true,
                nilness = true,
                unusedparams = true,
                unusedwrite = true,
                useany = true,
              },
              usePlaceholders = true,
              completeUnimported = true,
              staticcheck = true,
              directoryFilters = { "-.git", "-.vscode", "-.idea", "-.vscode-test", "-node_modules" },
              semanticTokens = true,
            },
          },
        },
      },
      setup = {
        gopls = function(_, opts)
          -- workaround for gopls not supporting semanticTokensProvider
          -- https://github.com/golang/go/issues/54531#issuecomment-1464982242
          LazyVim.lsp.on_attach(function(client, _)
            if client.name == "gopls" then
              if not client.server_capabilities.semanticTokensProvider then
                local semantic = client.config.capabilities.textDocument.semanticTokens
                client.server_capabilities.semanticTokensProvider = {
                  full = true,
                  legend = {
                    tokenTypes = semantic.tokenTypes,
                    tokenModifiers = semantic.tokenModifiers,
                  },
                  range = true,
                }
              end
            end
          end)
          -- end workaround
        end,
      },
    },
  },
  {
    "williamboman/mason.nvim",
    opts = function(_, opts)
      opts.ensure_installed = opts.ensure_installed or {}
      vim.list_extend(opts.ensure_installed, { "goimports", "gofumpt", "gomodifytags", "impl", "delve" })
    end,
  },
}