rework(preview): Ask providers for hover info

Now lsp checks if client supports hover
Addresses #82

lua/symbols-outline/providers/nvim-lsp.lua

@@ -1,35 +1,57 @@
-local config = require('symbols-outline.config')
+local config = require("symbols-outline.config")
 
 local M = {}
 
 local function getParams()
-    return {textDocument = vim.lsp.util.make_text_document_params()}
+	return { textDocument = vim.lsp.util.make_text_document_params() }
+end
+
+function M.hover_info(bufnr, params, on_info)
+	local clients = vim.lsp.buf_get_clients(bufnr)
+	local used_client
+
+	for id, client in pairs(clients) do
+		if config.is_client_blacklisted(id) then
+			goto continue
+		else
+			if client.server_capabilities.hoverProvider then
+				used_client = client
+				break
+			end
+		end
+		::continue::
+	end
+
+	if not used_client then
+		on_info(nil, { contents = { kind = "markdown", content = { "No extra information availaible!" } } })
+	end
+
+	used_client.request("textDocument/hover", params, on_info, bufnr)
 end
 
 -- probably change this
 function M.should_use_provider(bufnr)
-    local clients = vim.lsp.buf_get_clients(bufnr)
-    local ret = false
+	local clients = vim.lsp.buf_get_clients(bufnr)
+	local ret = false
 
-    for id, client in pairs(clients) do
-        if config.is_client_blacklisted(id) then
-           goto continue
-        else
-            if client.server_capabilities.documentSymbolProvider then
-               ret = true
-               break
-            end
-        end
-        ::continue::
-    end
+	for id, client in pairs(clients) do
+		if config.is_client_blacklisted(id) then
+			goto continue
+		else
+			if client.server_capabilities.documentSymbolProvider then
+				ret = true
+				break
+			end
+		end
+		::continue::
+	end
 
-    return ret
+	return ret
 end
 
 ---@param on_symbols function
 function M.request_symbols(on_symbols)
-    vim.lsp.buf_request_all(0, "textDocument/documentSymbol", getParams(),
-                            on_symbols)
+	vim.lsp.buf_request_all(0, "textDocument/documentSymbol", getParams(), on_symbols)
 end
 
 return M