if !exists('g:lspconfig')
  finish
endif
"
" Completion configuration for native neovim + nvim-lspconfig
lua << EOF
local nvim_lsp = require'lspconfig'
local coq = require'coq'
local cmp = require'cmp_nvim_lsp'
local signature = require'lsp_signature'
local illuminate = require'illuminate'

-- Mappings.
local opts = { noremap=true, silent=true }
vim.api.nvim_set_keymap('n', '<space>e', '<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>E', '<cmd>lua vim.diagnostic.set_loclist()<CR>', opts)
vim.api.nvim_set_keymap("n", "<space>q", "<cmd>lua vim.lsp.buf.formatting()<CR>", opts)

-- Use an on_attach function to only map the following keys
-- after the language server attaches to the current buffer
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')

  ---- 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', '<C-k>', '<cmd>lua vim.lsp.buf.signature_help()<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', 'gr', '<cmd>lua vim.lsp.buf.references()<CR>', opts)

  signature.on_attach({
        bind = true,
        handler_opts = {
            border = "single",
        }
    }, bufnr)
  illuminate.on_attach(client)
end

local signs = {
    { name = "DiagnosticSignError", text = "" },
    { name = "DiagnosticSignWarn", text = "" },
    { name = "DiagnosticSignHint", text = "" },
    { name = "DiagnosticSignInfo", text = "" },
  }

  for _, sign in ipairs(signs) do
    vim.fn.sign_define(sign.name, { texthl = sign.name, text = sign.text, numhl = "" })
  end

vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(
  vim.lsp.diagnostic.on_publish_diagnostics, {
    signs = {
      active = signs,
      --severity_limit = 'info',
    },
    severity_sort = true,
    underline = false,
    update_in_insert = false,
    --virtual_text = {
    --  spacing = 40,
    --  severity_limit = 'Warning',
    --},
    virtual_text = false,
  }
)

nvim_lsp.groovyls.setup (
  coq.lsp_ensure_capabilities({
  cmd = { "java", "-jar", "/home/kmcr/tools/groovy-language-server/build/libs/groovy-language-server-all.jar" },
  on_attach = on_attach,
  on_publish_diagnostics = diagnostic_handler,
  capabilities = cmp.update_capabilities(vim.lsp.protocol.make_client_capabilities()),
  })
)

nvim_lsp.ccls.setup(
  coq.lsp_ensure_capabilities({
    init_options = {
      compilationDatabaseDirectory = ".";
      index = {
        threads = 0;
      },
      clang = {
        excludeArgs = { "-frounding-math"} ;
      },
    },
    on_attach = on_attach,
    on_publish_diagnostics = diagnostic_handler,
    capabilities = cmp.update_capabilities(vim.lsp.protocol.make_client_capabilities()),
    flags = {
      debounce_text_changes = 150,
    }}
  )
)

nvim_lsp.pylsp.setup(
  coq.lsp_ensure_capabilities({
    settings = {
      pylint = {
        enabled = false
      },
      pyflakes = {
        enabled = false,
      },
    },
    flags = {
      debounce_text_changes = 150,
    },
    on_attach = on_attach,
    on_publish_diagnostics = diagnostic_handler,
    capabilities = cmp.update_capabilities(vim.lsp.protocol.make_client_capabilities()),
  })
)

-- Use a loop to conveniently call 'setup' on multiple servers and
-- map buffer local keybindings when the language server attaches
local servers = { "cmake", "rust_analyzer" }
for _, lsp in ipairs(servers) do
  nvim_lsp[lsp].setup(
    coq.lsp_ensure_capabilities({
      on_attach = on_attach,
      on_publish_diagnostics = diagnostic_handler,
      capabilities = cmp.update_capabilities(vim.lsp.protocol.make_client_capabilities()),
      flags = {
        debounce_text_changes = 150,
      }
    }
  )
)
end
EOF