" nvim-lsp Mappings
"
nnoremap <silent> <C-]>       <cmd>lua vim.lsp.buf.definition()<CR>
nnoremap <silent> K           <cmd>lua vim.lsp.buf.hover()<CR>
nnoremap <silent> gi          <cmd>lua vim.lsp.buf.implementation()<CR>
nnoremap <silent> gr          <cmd>lua vim.lsp.buf.references()<CR>
nnoremap <silent> gds         <cmd>lua vim.lsp.buf.document_symbol()<CR>
nnoremap <silent> gws         <cmd>lua vim.lsp.buf.workspace_symbol()<CR>
nnoremap <silent> <leader>rn  <cmd>lua vim.lsp.buf.rename()<CR>
nnoremap <silent> <leader>F   <cmd>lua vim.lsp.buf.formatting()<CR>
nnoremap <silent> <leader>ca  <cmd>lua vim.lsp.buf.code_action()<CR>
nnoremap <silent> <leader>ws  <cmd>lua require'metals'.worksheet_hover()<CR>
nnoremap <silent> <leader>a   <cmd>lua require'metals'.open_all_diagnostics()<CR>

" diagnostic navigation
nnoremap <silent> <leader>d   <cmd>lua vim.diagnostic.open_float(0, {scope = "line"})<CR>
nnoremap <silent> <leader>dn  <cmd>lua vim.diagnostic.goto_next()<CR>
nnoremap <silent> <leader>dp  <cmd>lua vim.diagnostic.goto_next()<CR>

" nvim-lsp Settings
"
" using latest stable
" let g:metals_server_version = '0.9.8+10-334e402e-SNAPSHOT'

" nvim-metals
"
:lua << EOF
  metals_config = require'metals'.bare_config()
  metals_config.init_options.statusBarProvider = "on"
  metals_config.settings = {
     showImplicitArguments = true,
     excludedPackages = {
       "akka.actor.typed.javadsl",
       "com.github.swagger.akka.javadsl"
     }
  }

  metals_config.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(
    vim.lsp.diagnostic.on_publish_diagnostics, {
      virtual_text = {
        prefix = '',
      }
    }
  )
EOF

if has('nvim-0.5')
  augroup lsp
    au!
    au FileType scala,sbt lua require('metals').initialize_or_attach(metals_config)
  augroup end
endif

" Helpful general settings
"
autocmd FileType scala setlocal omnifunc=v:lua.vim.lsp.omnifunc

" Set completeopt to have a better completion experience
set completeopt=menuone,noinsert,noselect