refactor: remove do_query function

lua/Trans/core/backend.lua

@@ -3,7 +3,6 @@ local Trans = require('Trans')
 
 ---@class TransBackend
 ---@field query fun(data: TransData)---@async
----@field opts TransBackendOpts
 ---@field no_wait? boolean whether need to wait for the result
 ---@field name string @backend name
 
@@ -21,9 +20,6 @@ if file then
 end
 
 
-local default_opts = conf.backend.default
-default_opts.__index = default_opts
-
 ---@class Trans
 ---@field backend table<string, TransBackend>
 return setmetatable({}, {
@@ -36,8 +32,6 @@ return setmetatable({}, {
             backend = self[name]
         end
 
-        backend.opts = setmetatable(conf.backend[name] or {}, default_opts)
-
         local private_opts = result[name]
         if private_opts then
             for k, v in pairs(private_opts) do

lua/Trans/core/buffer.lua

@@ -5,12 +5,13 @@ local api, fn = vim.api, vim.fn
 ---@field [number] string buffer[line] content
 local buffer = {}
 
+-- INFO : corountine can't invoke C function
 ---Clear all content in buffer
-function buffer:wipe()
-    print('begin')
-    api.nvim_buf_set_lines(self.bufnr, 0, -1, false, {})
-    print('end')
-end
+-- function buffer:wipe()
+--     print('begin')
+--     api.nvim_buf_set_lines(self.bufnr, 0, -1, false, {})
+--     print('end')
+-- end
 
 ---Delete buffer [_start, _end] line content [one index]
 ---@param _start? integer start line index

lua/Trans/core/conf.lua

@@ -25,13 +25,6 @@ return {
             backend = '*',
         },
     },
-    ---@type table<string, TransBackendOpts> fallback backend for mode
-    backend  = {
-        ---@class TransBackendOpts -- TODO :More core options
-        default = {
-            timeout = 2000,
-        },
-    },
     ---@type table frontend options
     frontend = {
         ---@class TransFrontendOpts
@@ -47,6 +40,7 @@ return {
                 close = 'slid',
                 interval = 12,
             },
+            timeout = 2000,
         },
         ---@class TransHoverOpts : TransFrontendOpts
         hover = {

lua/Trans/core/data.lua

@@ -7,7 +7,7 @@ local Trans = require('Trans')
 ---@field is_word boolean @Is the str a word
 ---@field str string @The original string
 ---@field mode string @The mode of the str
----@field result table<string, TransResult|boolean> @The result of the translation
+---@field result table<string, TransResult|nil|false> @The result of the translation
 ---@field frontend TransFrontend
 ---@field backends table<string, TransBackend>
 local M = {}

lua/Trans/core/frontend.lua

@@ -27,7 +27,7 @@ end
 ---@field opts TransFrontendOpts
 ---@field get_active_instance fun():TransFrontend?
 ---@field process fun(self: TransFrontend, data: TransData, result: TransResult)
----@field wait fun(self: TransFrontend, result: TransResult, name: string, timeout: integer)
+---@field wait fun(self: TransFrontend): fun() Update wait status
 ---@field execute fun(action: string) @Execute action for frontend instance
 
 ---@class Trans

lua/Trans/core/translate.lua

@@ -13,36 +13,28 @@ local function init_opts(opts)
 end
 
 
----To Query All Backends
----@param data TransData
----@return TransResult? @return nil if no result
-local function do_query(data)
-    -- HACK :Rewrite this function to support multi requests
-
-    ---@type TransFrontend
-    local frontend = data.frontend
-    local result = data.result
-
-
-    for _, backend in ipairs(data.backends) do
-        ---@cast backend TransBackend
-        local name = backend.name
-        if backend.no_wait then
+---@type table<string, fun(data: TransData, update: fun()): TransResult|false?>
+local strategy = {
+    fallback = function(data, update)
+        local result = data.result
+        for _, backend in ipairs(data.backends) do
+            ---@cast backend TransBackend
+            local name = backend.name
             backend.query(data)
-        else
-            backend.query(data)
-            frontend:wait(result, name, backend.opts.timeout)
-        end
 
 
-        if type(result[name]) == 'table' then
-            ---@diagnostic disable-next-line: return-type-mismatch
-            return result[name]
-        else
-            result[name] = nil
+            if not backend.no_wait then
+                while result[name] == nil do
+                    update()
+                end
+            end
+
+            if type(result[name]) == 'table' then
+                return result[name]
+            end
         end
     end
-end
+}
 
 
 -- HACK : Core process logic
@@ -62,13 +54,14 @@ local function process(opts)
         end
     end
 
-
     local data = Trans.data.new(opts)
-    local result = do_query(data)
+    local frontend = data.frontend
 
+    local result = strategy[Trans.conf.query](data, frontend:wait())
     if not result then return end
+
     Trans.cache[data.str] = data
-    data.frontend:process(data, result)
+    frontend:process(data, result)
 end