-------------------------------------------------------------------------------
--    - LSP servers configuration -
-------------------------------------------------------------------------------

local lspconfig = require("lspconfig")

local on_attach = function(client, bufnr)
	local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
  local function buf_set_option(...) vim.api.nvim_buf_set_option(bufnr, ...) end

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

	local default_opts = {noremap = true, silent = true}

	-- Lsp keymaps
	buf_set_keymap('n', '<C-]>', '<cmd>lua vim.lsp.buf.definition()<CR>', default_opts)
	buf_set_keymap('n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<CR>', default_opts)
	buf_set_keymap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', default_opts)
	buf_set_keymap('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', default_opts)
	buf_set_keymap('n', '<Leader>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', default_opts)
	buf_set_keymap('n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', default_opts)
	buf_set_keymap('n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', default_opts)
	buf_set_keymap('n', '<A-CR>', '<cmd>lua vim.lsp.buf.code_action()<CR>', default_opts)
	buf_set_keymap('n', '<Leader>ac', '<cmd>lua vim.lsp.buf.code_action()<CR>', default_opts)
	buf_set_keymap('n', '<Leader>a', '<cmd>lua vim.lsp.buf.code_action_range()<CR>', default_opts)
end

-- Lsp default language servers
local servers = { "bashls", "clangd", "cucumber_language_server", "crystalline", "dockerls", "jsonls", "pyright", "rust_analyzer", "kotlin_language_server", "mint", "vimls", "clojure_lsp", "gopls", "gdscript", "terraformls", "tsserver" }
for _, lsp in ipairs(servers) do
  lspconfig[lsp].setup { on_attach = on_attach }
end

-- Lua bultin lsp
require('nlua.lsp.nvim').setup(lspconfig, {
  on_attach = on_attach,

  -- Include globals you want to tell the LSP are real :)
  globals = {}
})

-- Flutter tools
require('flutter-tools').setup {
	lsp = {
		on_attach = on_attach
	}
}

-- Dotnet LS
local pid = vim.fn.getpid()
local omnisharp_bin = vim.fn.glob('$HOME') .. "/lsp/dotnet/omnisharp/run"
lspconfig.omnisharp.setup {
	cmd = { omnisharp_bin, "--languageserver" , "--hostPID", tostring(pid) };
	on_attach = on_attach;
}

-- Leminx (XML Language server)
lspconfig.lemminx.setup {
	cmd = { "lemminx" };
	on_attach = on_attach;
}

-- JDTLS (Java)
-- Can't be local currently, because autocommand has to be used
jdtls_on_attach = function(client, bufnr)
	local function buf_set_keymap(...) vim.api.nvim_buf_set_keymap(bufnr, ...) end
  local function buf_set_option(...) vim.api.nvim_buf_set_option(bufnr, ...) end

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

	local default_opts = {noremap = true, silent = true}

  on_attach(client, bufnr)

	buf_set_keymap('n', '<A-CR>', "<cmd>lua require('jdtls').code_action()<CR>", default_opts)
	buf_set_keymap('n', '<Leader>ac', "<cmd>lua require('jdtls').code_action()<CR>", default_opts)
end

return {
	jdtls_on_attach = jdtls_on_attach
}