fix: better backend configuration file parser

lua/Trans/core/backend.lua

@@ -0,0 +1,32 @@
+local Trans = require('Trans')
+local M = Trans.metatable('backend')
+
+--- INFO :Parse online engine keys config file
+local path = Trans.conf.dir .. '/Trans.json'
+local file = io.open(path, "r")
+
+if file then
+    local content = file:read("*a")
+    local status, result = pcall(vim.json.decode, content)
+    file:close()
+    if not status then
+        error('Unable to parse json file: ' .. path .. '\n' .. result)
+    end
+
+
+
+    local default_opts = vim.deepcopy(Trans.conf.backend)
+    for name, private_opts in pairs(result or {}) do
+        local opts = vim.tbl_extend('keep', Trans.conf.backend[name] or {}, default_opts, private_opts)
+
+        local backend = M[name]
+        for k, v in pairs(opts) do
+            if not backend[k] then
+                backend[k] = v
+            end
+        end
+    end
+end
+
+
+return M

lua/Trans/core/setup.lua

@@ -3,7 +3,7 @@ local Trans = require('Trans')
 local function set_strategy_opts(conf)
     local define       = Trans.define
     local all_modes    = define.modes
-    local all_backends = vim.tbl_keys(conf.keys)
+    local all_backends = define.backends
 
     local function parse_backend(backend)
         if type(backend) == 'string' then
@@ -62,6 +62,26 @@ local function set_frontend_opts(conf)
 end
 
 
+local function define_keymaps(conf)
+    local set = vim.keymap.set
+    local opts = { silent = true, expr = true }
+
+
+    for _, name in ipairs(Trans.define.frontends) do
+        for action, key in pairs(conf.frontend[name].keymap) do
+            set('n', key, function()
+                local frontend = Trans.frontend[name]
+                if frontend.is_available() then
+                    frontend.actions[action]()
+                else
+                    return key
+                end
+            end, opts)
+        end
+    end
+end
+
+
 
 local function define_highlights(conf)
     local set_hl     = vim.api.nvim_set_hl
@@ -80,5 +100,6 @@ return function(opts)
 
     set_strategy_opts(conf)
     set_frontend_opts(conf)
+    define_keymaps(conf)
     define_highlights(conf)
 end

lua/Trans/core/translate.lua

@@ -1,7 +1,6 @@
 local Trans = require('Trans')
 local util = Trans.util
 
-vim.pretty_print(Trans.conf)
 local function new_data(opts)
     opts = opts or {}
     local mode = opts.method or ({
@@ -28,37 +27,41 @@ local function new_data(opts)
         data.from = 'zh'
         data.to = 'en'
     end
+
+    -- TODO : Check if the str is a word
+    data.is_word = true
+
     return data
 end
 
 local function set_result(data)
-    -- local t_backend = require('Trans').backend
-    -- for _, name in rdata.backend do
-    --     local backend = t_backend[name]
-    --     backend.query(data)
-    --     if backend.no_wait then
+    local backend_list = data.backend
+    local backends = Trans.backend
 
-    --     end
-    -- end
 
-    -- Trans.backend.baidu.query(data)
-    -- local thread = coroutine.running()
-    -- local resume = function()
-    --     coroutine.resume(thread)
-    -- end
+    local frontend = Trans.frontend[data.frontend]
 
-    -- 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)
+    local function do_query(name)
+        local backend = backends[name]
+        if backend.no_wait then
+            backend.query(data)
+            if type(data.result[name]) == 'table' then
+                return
+            end
+        else
+            backend.query(data)
+            frontend.wait(data.result, name, backend.timeout)
+        end
+    end
+
+    for _, name in ipairs(backend_list) do
+        do_query(name)
+    end
 end
 
-local function render_window()
-
+local function render_window(data)
+    -- TODO
+    print('begin to render window')
 end
 
 -- HACK : Core process logic
@@ -71,7 +74,7 @@ local function process(opts)
     set_result(data)
     if data.result == false then return end
 
-    render_window()
+    render_window(data)
 end
 
 return coroutine.wrap(process)

lua/Trans/core/util.lua

@@ -36,18 +36,16 @@ end
 ---@param mode string 'n' | 'v' | 'i'
 ---@return string
 function M.get_str(mode)
-    return ({
-        normal = function()
-            return fn.expand('<cword>')
-        end,
-        visual = function()
-            api.nvim_input('<ESC>')
-            return M.get_select()
-        end,
-        input = function()
-            return fn.input('请输入需要查询的单词:')
-        end,
-    })[mode]()
+    if mode == 'n' or mode == 'normal' then
+        return fn.expand('<cword>')
+    elseif mode == 'v' or mode == 'visual' then
+        api.nvim_input('<ESC>')
+        return M.get_select()
+    elseif mode == 'input' then
+        return fn.expand('<cword>')
+    else
+        error('Unsupported mode' .. mode)
+    end
 end
 
 function M.is_English(str)