refactor: support async online query engine:baidu

lua/Trans/core/conf.lua

@@ -60,7 +60,7 @@ return {
         -- no = '❌'
     },
     theme = 'default',
-    db_path = '$HOME/.vim/dict/ultimate.db',
+    dir = '$HOME/.vim/dict',
     -- float = {
     --     width = 0.8,
     --     height = 0.8,

lua/Trans/core/translate.lua

@@ -24,10 +24,22 @@ process = function(opts)
     end
 
 
-    local res = require('Trans.backend').offline.query(data)
-    -- vim.pretty_print(res)
+    require('Trans.backend').baidu.query(data)
+    local thread = coroutine.running()
+    local resume = function()
+        coroutine.resume(thread)
+    end
+
+    local time = 0
+    while data.result == nil do
+        vim.defer_fn(resume, 400)
+        time = time + 1
+        print('waiting' .. ('.'):rep(time))
+        coroutine.yield()
+    end
+    vim.pretty_print(data)
 
     M.translate = coroutine.wrap(process)
 end
 
-return process
+return coroutine.wrap(process)