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(module config.lsp.handlers
  {autoload {util util
             nvim aniseed.nvim}})

(def- signs
  [{ :name "DiagnosticSignError" :text "" }
   { :name "DiagnosticSignWarn" :text "" }
   { :name "DiagnosticSignHint" :text "" }
   { :name "DiagnosticSignInfo" :text "" }])

(defn- apply-signs []
  (each [_ sign (ipairs signs)]
    (vim.fn.sign_define sign.name { :texthl sign.name :text sign.text :numhl "" })))

(def- config 
  {:virtual_text false
    :signs {
      :active signs
    }
    :update_in_insert true
    :underline true
    :severity_sort true
    :float {
      :focusable false
      :style "minimal"
      :border "rounded"
      :source "always"
      :header ""
      :prefix ""}})

(defn setup []
  (do
    (apply-signs)
    (vim.diagnostic.config config)
    (set vim.lsp.handlers.textDocument/hover (vim.lsp.with { :border "rounded"} ))
    (set vim.lsp.handlers.textDocument/signatureHelp (vim.lsp.with vim.lsp.handlers.signature_help { :border "rounded"} ))))

(defn- lsp-keymaps [bufnr] 
  (let [opts { :noremap true :silent true }]
    (do 
      (nvim.buf_set_keymap bufnr :n :gD "<cmd>lua vim.lsp.buf.declaration()<CR>" opts)
      (nvim.buf_set_keymap bufnr :n :gd "<cmd>lua vim.lsp.buf.definition()<CR>" opts)
      (nvim.buf_set_keymap bufnr :n :K "<cmd>lua vim.lsp.buf.hover()<CR>" opts)
      (nvim.buf_set_keymap bufnr :n :gI "<cmd>lua vim.lsp.buf.implementation()<CR>" opts)
      (nvim.buf_set_keymap bufnr :n :gr "<cmd>lua vim.lsp.buf.references()<CR>" opts)
      (nvim.buf_set_keymap bufnr :n :gl "<cmd>lua vim.diagnostic.open_float()<CR>" opts)
      (nvim.buf_set_keymap bufnr :n :<leader>q "<cmd>lua vim.diagnostic.setloclist()<CR>" opts))))

(defn on-attach [client bufnr]
  (if (= client.name :html)
    (set client.resolved_capabilities.document_formatting false))
  (lsp-keymaps bufnr))

(defn capabilities []
  (let [capabilities (vim.lsp.protocol.make_client_capabilities)]
    (set capabilities.textDocument.completion.completionItem.snippetSupport true)
    (let [cmp-nvim-lsp (util.load-plugin :cmp_nvim_lsp)]
      (cmp-nvim-lsp.update_capabilities capabilities))
    capabilities))