local lspconfig = require('lspconfig')
local lsp_defaults = lspconfig.util.default_config

lsp_defaults.capabilities = vim.tbl_deep_extend(
  'force',
  lsp_defaults.capabilities,
  vim.lsp.protocol.make_client_capabilities(),
  require('cmp_nvim_lsp').default_capabilities(),
  { workspace = { didChangeWatchedFiles = { dynamicRegistration = true }}}
)

lspconfig.bashls.setup {}
lspconfig.clangd.setup {}
lspconfig.lua_ls.setup {
  single_file_support = true,
  flags = {
    debounce_text_changes = 150,
  }
}
lspconfig.marksman.setup{}
lspconfig.nil_ls.setup {}
lspconfig.pylsp.setup {}
vim.api.nvim_create_autocmd('LspAttach', {
  desc = 'LSP actions',
  callback = function()
    local bufmap = function(mode, lhs, rhs)
      local opts = {buffer = true}
      vim.keymap.set(mode, lhs, rhs, opts)
    end

    -- Displays hover information about the symbol under the cursor
    bufmap('n', 'K', '<cmd>lua vim.lsp.buf.hover()<cr>')

    -- Jump to the definition
    bufmap('n', 'gd', '<cmd>lua vim.lsp.buf.definition()<cr>')

    -- Jump to declaration
    bufmap('n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<cr>')

    -- Lists all the implementations for the symbol under the cursor
    bufmap('n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<cr>')

    -- Jumps to the definition of the type symbol
    bufmap('n', 'go', '<cmd>lua vim.lsp.buf.type_definition()<cr>')

    -- Lists all the references 
    bufmap('n', 'gr', '<cmd>lua vim.lsp.buf.references()<cr>')

    -- Displays a function's signature information
    bufmap('n', 'gs', '<cmd>lua vim.lsp.buf.signature_help()<cr>')

    -- Renames all references to the symbol under the cursor
    bufmap('n', '<F2>', '<cmd>lua vim.lsp.buf.rename()<cr>')

    -- Selects a code action available at the current cursor position
    bufmap('n', '<F4>', '<cmd>lua vim.lsp.buf.code_action()<cr>')
    bufmap('x', '<F4>', '<cmd>lua vim.lsp.buf.range_code_action()<cr>')

    -- Show diagnostics in a floating window
    bufmap('n', 'gl', '<cmd>lua vim.diagnostic.open_float()<cr>')

    -- Move to the previous diagnostic
    bufmap('n', '[d', '<cmd>lua vim.diagnostic.goto_prev()<cr>')

    -- Move to the next diagnostic
    bufmap('n', ']d', '<cmd>lua vim.diagnostic.goto_next()<cr>')
  end
})