refactor: support async online query engine:baidu

lua/Trans/backend/baidu.lua

@@ -1,74 +1,63 @@
 local M          = {}
 
 local baidu      = require('Trans').conf.engine.baidu
-local appid      = baidu.appid
+local app_id     = baidu.app_id
 local app_passwd = baidu.app_passwd
 local salt       = tostring(math.random(bit.lshift(1, 15)))
 local uri        = 'https://fanyi-api.baidu.com/api/trans/vip/translate'
 
-
-M.request_headers = function(data)
-    local tmp  = appid .. data.str .. salt .. app_passwd
+M.get_content    = function(data)
+    local tmp  = app_id .. data.str .. salt .. app_passwd
     local sign = require('Trans.util.md5').sumhexa(tmp)
     return {
         q     = data.str,
         from  = data.from,
         to    = data.to,
-        appid = appid,
+        appid = app_id,
         salt  = salt,
         sign  = sign,
     }
 end
 
+-- {
+--   body = '{"from":"en","to":"zh","trans_result":[{"src":"require","dst":"\\u8981\\u6c42"}]}',
+--   exit = 0,
+--   headers = { "Content-Type: application/json", "Date: Thu, 09 Mar 2023 14:01:09 GMT", 'P3p: CP=" OTI DSP COR IVA OUR IND COM "', "Server: Apache", "Set-Cookie: BAIDUID=CB6D99CCD3B5F5278B5BE9428F002FC3:FG=1; expires=Fri, 08-Mar-24 14:01:09 GMT; max-age=31536000; path=/; domain=.baidu.com; version=1", "Tracecode: 00696104432377504778030922", "Content-Length: 79", "", "" },
+--   status = 200
+-- }
+
 
 M.query = function(data)
     data.engine = 'baidu'
 
-    require('Trans.wrapper.curl').POST {
+    local handle = function(res)
+        local status, body = pcall(vim.json.decode, res.body)
+        if status and body then
+            local result = body.trans_result
+            if result then
+                -- TEST :whether multi result
+                assert(#result == 1, 'multi result :' .. vim.inspect(result))
+                result = result[1]
+                data.result = {
+                    title = result.src,
+                    translation = result.dst,
+                }
+                return
+            end
+        end
 
-    }
+        data.result = false
+        data.error = res
+    end
+
+    require('plenary.curl').get(uri, {
+        query = M.get_content(data),
+        callback = handle,
+    })
 end
 
-
 return M
 
--- local post       = require('Trans.util.curl').POST
-
--- ---返回一个channel
--- ---@param word string
--- ---@return table
--- return function(word)
---     local isEn = word:isEn()
---     local query = get_field(word, isEn)
---     local result = {}
-
---     post(uri, {
---         data = query,
---         headers = {
---             content_type = "application/x-www-form-urlencoded",
---         },
---         callback = function(str)
---             local ok, res = pcall(vim.json.decode, str)
---             if ok and res and res.trans_result then
---                 result[1] = {
---                     title = { word = word },
---                         [isEn and 'translation' or 'definition'] = res.trans_result[1].dst,
---                 }
-
---                 if result.callback then
---                     result.callback(result[1])
---                 end
---             else
---                 result[1] = false
---             end
---         end,
---     })
-
---     return result
--- end
-
-
-
 -- -- NOTE :free tts:
 -- -- https://zj.v.api.aa1.cn/api/baidu-01/?msg=我爱你&choose=0&su=100&yd=5
 -- -- 选择转音频的人物，女生1 输入0 ｜ 女生2输入：5｜男生1 输入：1｜男生2 输入：2｜男生3 输入：3

lua/Trans/backend/offline.lua

@@ -13,7 +13,7 @@ vim.api.nvim_create_autocmd('VimLeavePre', {
 M.query = function(data)
     if data.is_word == false or data.from == 'zh' then return end
 
-    data.path        = vim.fn.expand(data.path or require('Trans').conf.db_path)
+    data.path        = vim.fn.expand(data.path or require('Trans').conf.dir .. '/ultimate.db')
     data.engine      = 'offline'
     data.formatter   = data.formatter or M.formatter
     data.query_field = data.query_field or M.query_field

lua/Trans/backend/youdao.lua

@@ -1,31 +1,31 @@
-local GET = require("Trans.util.curl").GET
+-- local GET = require("Trans.util.curl").GET
 
-return function(word)
-    local isEn = word:isEn()
-    local result = {}
+-- return function(word)
+--     local isEn = word:isEn()
+--     local result = {}
 
-    local uri = ('https://v.api.aa1.cn/api/api-fanyi-yd/index.php?msg=%s&type=%d'):format(word, isEn and 2 or 1)
-    GET(uri, {
-        callback = function(str)
-            local ok, res = pcall(vim.json.decode, str)
-            if not ok or not res or not res.text or isEn and res.text:isEn() then
-                result[1] = false
-                return
-            end
+--     local uri = ('https://v.api.aa1.cn/api/api-fanyi-yd/index.php?msg=%s&type=%d'):format(word, isEn and 2 or 1)
+--     GET(uri, {
+--         callback = function(str)
+--             local ok, res = pcall(vim.json.decode, str)
+--             if not ok or not res or not res.text or isEn and res.text:isEn() then
+--                 result[1] = false
+--                 return
+--             end
 
-            result[1] = {
-                title = { word = word },
-                [isEn and 'translation' or 'definition'] = res.text,
-            }
+--             result[1] = {
+--                 title = { word = word },
+--                 [isEn and 'translation' or 'definition'] = res.text,
+--             }
 
-            if result.callback then
-                result.callback(result[1])
-            end
-        end
-    })
+--             if result.callback then
+--                 result.callback(result[1])
+--             end
+--         end
+--     })
 
-    return result
-end
+--     return result
+-- end
 
 -- local youdao    = require("Trans").conf.engine.youdao
 -- local uri       = 'https://openapi.youdao.com/api'