local configs = require "lspconfig/configs"
local util = require "lspconfig/util"

local language_id_of = {
  menhir = "ocaml.menhir",
  ocaml = "ocaml",
  ocamlinterface = "ocaml.interface",
  ocamllex = "ocaml.ocamllex",
  reason = "reason",
}

local filetypes = {}

for ftype, _ in pairs(language_id_of) do
  table.insert(filetypes, ftype)
end

local get_language_id = function(_, ftype)
  return language_id_of[ftype]
end

configs.ocamllsp = {
  default_config = {
    cmd = { "ocamllsp" },
    filetypes = filetypes,
    root_dir = util.root_pattern("*.opam", "esy.json", "package.json", ".git"),
    get_language_id = get_language_id,
  },
  docs = {
    description = [[
https://github.com/ocaml/ocaml-lsp

`ocaml-lsp` can be installed as described in [installation guide](https://github.com/ocaml/ocaml-lsp#installation).

To install the lsp server in a particular opam switch:
```sh
opam pin add ocaml-lsp-server https://github.com/ocaml/ocaml-lsp.git
opam install ocaml-lsp-server
```
    ]],
    default_config = {
      root_dir = [[root_pattern("*.opam", "esy.json", "package.json", ".git")]],
    },
  },
}