feat: add youdao backend file

lua/Trans/backend/baidu.lua

@@ -4,6 +4,7 @@
 ---@field app_id string
 ---@field app_passwd string
 ---@field disable boolean
+
 local M = {
     uri  = 'https://fanyi-api.baidu.com/api/trans/vip/translate',
     salt = tostring(math.random(bit.lshift(1, 15))),
@@ -12,7 +13,6 @@ local M = {
 
 local Trans = require('Trans')
 
-
 ---@class BaiduQuery
 ---@field q string
 ---@field from string
@@ -50,12 +50,6 @@ end
 ---Query Using Baidu API
 ---@param data TransData
 function M.query(data)
-    if M.disable then
-        data.result.baidu = false
-        return
-    end
-
-
     local handle = function(res)
         local status, body = pcall(vim.json.decode, res.body)
         if not status or not body then

lua/Trans/backend/youdao.lua

@@ -4,8 +4,86 @@
 ---@field app_id string
 ---@field app_passwd string
 ---@field disable boolean
+local M = {
+    uri  = 'https://openapi.youdao.com/api',
+    salt = tostring(math.random(bit.lshift(1, 15))),
+    name = 'youdao',
+}
+
+---@class YoudaoQuery
+---@field q string
+---@field from string
+---@field to string
+---@field appid string
+---@field salt string
+---@field sign string
+
+---Get content for query
+---@param data TransData
+---@return YoudaoQuery
+function M.get_content(data)
+    local str     = data.str
+    local app_id  = M.app_id
+    local salt    = M.salt
+    local curtime = tostring(os.time())
+    local input   = #str > 20 and
+        str:sub(1, 10) .. #str .. str:sub(-10) or str
+
+    -- sign=sha256(应用ID+input+salt+curtime+应用密钥)；
+    local hash    = app_id .. input .. salt .. curtime .. M.app_passwd
+    local sign    = vim.fn.sha256(hash)
 
 
+    return {
+        q        = str,
+        to       = data.from == 'zh' and 'en' or 'zh-CHS',
+        from     = 'auto',
+        signType = 'v3',
+        appKey   = app_id,
+        salt     = M.salt,
+        curtime  = curtime,
+        sign     = sign,
+    }
+end
+
+---@overload fun(TransData): TransResult
+---Query Using Baidu API
+---@param data TransData
+function M.query(data)
+    local handle = function(res)
+        local status, body = pcall(vim.json.decode, res.body)
+        if not status or not body then
+            data.result.youdao = false
+            data.trace = res
+            return
+        end
+
+        if true then
+            vim.print(body)
+            return
+        end
+
+        local result = body.trans_result
+        if result then
+            -- TEST :whether multi result
+            assert(#result == 1)
+            result = result[1]
+            data.result.youdao = {
+                ['title'] = result.src,
+                [data.from == 'en' and 'translation' or 'definition'] = { result.dst },
+            }
+        end
+    end
+
+    require('Trans').curl.get(M.uri, {
+        query = M.get_content(data),
+        callback = handle,
+    })
+end
+
+---@class TransBackend
+---@field youdao Youdao
+return M
 -- local GET = require("Trans.util.curl").GET
 -- return function(word)
 --     local isEn = word:isEn()