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

local lsputil = require('lspconfig/util')
local python_venv = require('utils').get_python_venv()

local on_attach = function(client, bufnr)
  -- Enable completion triggered by <c-x><c-o>
  vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')

  -- Mappings.
  -- See `:help vim.lsp.*` for documentation on any of the below functions
  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gD', '<cmd>lua vim.lsp.buf.declaration()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gd', '<cmd>lua vim.lsp.buf.definition()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'K', '<cmd>lua vim.lsp.buf.hover()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gi', '<cmd>lua vim.lsp.buf.implementation()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>wa', '<cmd>lua vim.lsp.buf.add_workspace_folder()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>wr', '<cmd>lua vim.lsp.buf.remove_workspace_folder()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>wl', '<cmd>lua print(vim.inspect(vim.lsp.buf.list_workspace_folders()))<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>D', '<cmd>lua vim.lsp.buf.type_definition()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>rn', '<cmd>lua vim.lsp.buf.rename()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>ca', '<cmd>lua vim.lsp.buf.code_action()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<space>f', '<cmd>lua vim.lsp.buf.formatting()<CR>', opts)
  vim.api.nvim_buf_set_keymap(bufnr, 'n', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<CR>', opts)
end

vim.api.nvim_set_keymap('n', '<space>d', '<cmd>lua vim.diagnostic.open_float()<CR>', opts)
vim.api.nvim_set_keymap('n', '[d', '<cmd>lua vim.diagnostic.goto_prev()<CR>', opts)
vim.api.nvim_set_keymap('n', ']d', '<cmd>lua vim.diagnostic.goto_next()<CR>', opts)
vim.api.nvim_set_keymap('n', '<space>q', '<cmd>lua vim.diagnostic.setloclist()<CR>', opts)

-- require('lspconfig').ansiblels.setup{ on_attach = on_attach }
require('lspconfig').clangd.setup{ on_attach = on_attach, filetypes = { "c", "cpp", "objc", "objcpp", "cuda" } }
require('lspconfig').eslint.setup{ on_attach = on_attach }
require('lspconfig').gopls.setup{ on_attach = on_attach }
require('lspconfig').terraformls.setup{ on_attach = on_attach }

require('lspconfig').dartls.setup{
  on_attach = on_attach,
  settings = {
    dart = {
      analysisExcludedFolders = { '.git' },
      completeFunctionCalls = true,
      enableSdkFormatter = true,
      showTodos = true
    }
  }
}

require('lspconfig').pylsp.setup{
  cmd_env = {
    VIRTUAL_ENV = python_venv,
    PATH = lsputil.path.join(python_venv, 'bin') .. ':' .. vim.env.PATH,
    MYPYPATH = lsputil.path.join(python_venv, 'bin') .. ':' .. (vim.env.MYPYPATH or "")
  },
  on_attach = on_attach,
  settings = {
    pylsp = {
      configurationSources = {
        'flake8',
        'pycodestyle'
      },
      plugins = {
        flake8 = {
          -- enabled = vim.fn.executable('flake8') == 1,
          enabled = true,
          ignore = {},
          maxLineLength = 160,
          cmd = 'flake8',
        },
        rope_completion = {
          enabled = true,
        },
        pyflakes = {
          enabled = true,
        },
        pylsp_mypy = {
          overrides = {
            '--show-error-codes',
            true
          },
        }
      }
    }
  }
}

require('lspconfig').elixirls.setup{
  cmd = {'elixir-ls'},
  on_attach = on_attach
}