local on_windows = vim.loop.os_uname().version:match("Windows")

local function join_paths(...)
  local path_sep = on_windows and "\\" or "/"
  local result = table.concat({ ... }, path_sep)
  return result
end

vim.cmd([[set runtimepath=$VIMRUNTIME]])

local temp_dir = vim.loop.os_getenv("TEMP") or "/tmp"

vim.cmd("set packpath=" .. join_paths(temp_dir, "nvim", "site"))

local package_root = join_paths(temp_dir, "nvim", "site", "pack")
local lspconfig_path = join_paths(package_root, "test", "start", "nvim-lspconfig")

if vim.fn.isdirectory(lspconfig_path) ~= 1 then
  vim.fn.system({ "git", "clone", "https://github.com/neovim/nvim-lspconfig", lspconfig_path })
end

vim.lsp.set_log_level("debug")
require("vim.lsp.log").set_format_func(vim.inspect)

local nvim_lsp = require("lspconfig")
local on_attach = function(_, bufnr)
  local function buf_set_option(...)
    vim.api.nvim_buf_set_option(bufnr, ...)
  end

  buf_set_option("omnifunc", "v:lua.vim.lsp.omnifunc")

  -- Mappings.
  local opts = { buffer = bufnr, noremap = true, silent = true }
  vim.keymap.set("n", "gD", vim.lsp.buf.declaration, opts)
  vim.keymap.set("n", "gd", vim.lsp.buf.definition, opts)
  vim.keymap.set("n", "K", vim.lsp.buf.hover, opts)
  vim.keymap.set("n", "gi", vim.lsp.buf.implementation, opts)
  vim.keymap.set("n", "<C-k>", vim.lsp.buf.signature_help, opts)
  vim.keymap.set("n", "<space>wa", vim.lsp.buf.add_workspace_folder, opts)
  vim.keymap.set("n", "<space>wr", vim.lsp.buf.remove_workspace_folder, opts)
  vim.keymap.set("n", "<space>wl", function()
    print(vim.inspect(vim.lsp.buf.list_workspace_folders()))
  end, opts)
  vim.keymap.set("n", "<space>D", vim.lsp.buf.type_definition, opts)
  vim.keymap.set("n", "<space>rn", vim.lsp.buf.rename, opts)
  vim.keymap.set("n", "gr", vim.lsp.buf.references, opts)
  vim.keymap.set("n", "<space>e", vim.diagnostic.open_float, opts)
  vim.keymap.set("n", "[d", vim.diagnostic.goto_prev, opts)
  vim.keymap.set("n", "]d", vim.diagnostic.goto_next, opts)
  vim.keymap.set("n", "<space>q", vim.diagnostic.setloclist, opts)
end

-- Add the server that troubles you here
local name = "ruby_ls"
local cmd = { "ruby-lsp" } -- needed for elixirls, lua_ls, omnisharp
if not name then
  print("You have not defined a server name, please edit minimal_init.lua")
end
if not nvim_lsp[name].document_config.default_config.cmd and not cmd then
  print([[You have not defined a server default cmd for a server
    that requires it please edit minimal_init.lua]])
end

nvim_lsp[name].setup({
  cmd = cmd,
  on_attach = on_attach,
})