metals.lua

-- local M = {}

-- M.config = function()
--   local lvim_lsp = require("lvim.lsp")
--   local metals_config = require("metals").bare_config()
--   metals_config.on_init = lvim_lsp.common_on_init
--   metals_config.on_exit = lvim_lsp.common_on_exit
--   metals_config.capabilities = lvim_lsp.common_capabilities()
--   metals_config.on_attach = function(client, bufnr)
--     lvim_lsp.common_on_attach(client, bufnr)
--     require("metals").setup_dap()
--   end
--   metals_config.settings = {
--     superMethodLensesEnabled = true,
--     showImplicitArguments = true,
--     showInferredType = true,
--     showImplicitConversionsAndClasses = true,
--     excludedPackages = {},
--   }
--   metals_config.init_options.statusBarProvider = false
--   vim.api.nvim_create_autocmd("FileType", {
--     pattern = { "scala", "sbt" },
--     callback = function() require("metals").initialize_or_attach(metals_config) end,
--     group = vim.api.nvim_create_augroup("nvim-metals", { clear = true }),
--   })
-- end

-- return M

local metals_config = require("metals").bare_config()

-- Example of settings
metals_config.settings = {
  showImplicitArguments = true,
  excludedPackages = { "akka.actor.typed.javadsl", "com.github.swagger.akka.javadsl" },
}

-- *READ THIS*
-- I *highly* recommend setting statusBarProvider to true, however if you do,
-- you *have* to have a setting to display this in your statusline or else
-- you'll not see any messages from metals. There is more info in the help
-- docs about this
-- metals_config.init_options.statusBarProvider = "on"

-- Example if you are using cmp how to make sure the correct capabilities for snippets are set
metals_config.capabilities = require("cmp_nvim_lsp").default_capabilities()

-- Debug settings if you're using nvim-dap
-- local dap = require("dap")

-- dap.configurations.scala = {
--   {
--     type = "scala",
--     request = "launch",
--     name = "RunOrTest",
--     metals = {
--       runType = "runOrTestFile",
--       --args = { "firstArg", "secondArg", "thirdArg" }, -- here just as an example
--     },
--   },
--   {
--     type = "scala",
--     request = "launch",
--     name = "Test Target",
--     metals = {
--       runType = "testTarget",
--     },
--   },
-- }

-- metals_config.on_attach = function(client, bufnr)
--   require("metals").setup_dap()
-- end

vim.api.nvim_create_autocmd("BufEnter", {
  pattern = { "*.scala", "*.sbt" },
  command = "lua require('custom.configs.metals').config()"
})

-- Autocmd that will actually be in charging of starting the whole thing
local nvim_metals_group = vim.api.nvim_create_augroup("nvim-metals", { clear = true })
vim.api.nvim_create_autocmd("FileType", {
  -- NOTE: You may or may not want java included here. You will need it if you
  -- want basic Java support but it may also conflict if you are using
  -- something like nvim-jdtls which also works on a java filetype autocmd.
  pattern = { "scala", "sbt", "java" },
  callback = function()
    require("metals").initialize_or_attach(metals_config)
  end,
  group = nvim_metals_group,
})

return metals_config