fix: use backend local strategy instead of global strategy

lua/Trans/frontend/hover/load.lua

@@ -1,5 +1,6 @@
 local node = require('Trans').util.node
 local it, t, f = node.item, node.text, node.format
+local interval = (' '):rep(4)
 
 local function conjunction(text)
     return {
@@ -9,44 +10,89 @@ local function conjunction(text)
     }
 end
 
-local interval = (' '):rep(4)
+---@type table<string, fun(hover:TransHover, result: TransResult)>
+local default = {
+    str = function(hover, result)
+        -- TODO :
+        hover.buffer:setline(it(result.str, 'TransWord'))
+    end,
+    translation = function(hover, result)
+        local translation = result.translation
+        if not translation then return end
 
-local strategy = {
-    title = function(hover, title)
-        if type(title) == 'string' then
-            hover.buffer:setline(it(title, 'TransWord'))
-            return
+        local buffer = hover.buffer
+        buffer:setline(conjunction('中文翻译'))
+
+        for _, value in ipairs(translation) do
+            buffer:setline(
+                it(interval .. value, 'TransTranslation')
+            )
         end
 
-        local icon = hover.opts.icon
+        buffer:setline('')
+    end,
+    definition = function(hover, result)
+        local definition = result.definition
+        if not definition then return end
 
+        local buffer = hover.buffer
+        buffer:setline(conjunction('英文注释'))
+
+        for _, value in ipairs(definition) do
+            buffer:setline(
+                it(interval .. value, 'TransDefinition')
+            )
+        end
+
+        buffer:setline('')
+    end,
+}
+
+---@diagnostic disable-next-line: assign-type-mismatch
+default.__index = default
+
+local strategy = setmetatable({}, {
+    __index = function(tbl, key)
+        tbl[key] = default
+        return tbl[key]
+    end,
+    __newindex = function(tbl, key, value)
+        rawset(tbl, key, setmetatable(value, default))
+    end
+})
+
+
+strategy.offline = {
+    title = function(hover, result)
+        local title = result.title
+        if not title then return end
+
+        local icon     = hover.opts.icon
 
         local word     = title.word
         local oxford   = title.oxford
         local collins  = title.collins
         local phonetic = title.phonetic
 
-
-        if not phonetic and not collins and not oxford then
-            hover.buffer:setline(it(word, 'TransWord'))
-        else
-            hover.buffer:setline(f {
-                width = hover.opts.width,
-                text = t {
-                    it(word, 'TransWord'),
-                    t {
-                        it('['),
-                        it((phonetic and phonetic ~= '') and phonetic or icon.notfound, 'TransPhonetic'),
-                        it(']')
-                    },
-
-                    it(collins and icon.star:rep(collins) or icon.notfound, 'TransCollins'),
-                    it(oxford == 1 and icon.yes or icon.no)
+        hover.buffer:setline(f {
+            width = hover.opts.width,
+            text = t {
+                it(word, 'TransWord'),
+                t {
+                    it('['),
+                    it((phonetic and phonetic ~= '') and phonetic or icon.notfound, 'TransPhonetic'),
+                    it(']')
                 },
-            })
-        end
+
+                it(collins and icon.star:rep(collins) or icon.notfound, 'TransCollins'),
+                it(oxford == 1 and icon.yes or icon.no)
+            },
+        })
     end,
-    tag = function(hover, tag)
+    tag = function(hover, result)
+        local tag = result.tag
+        if not tag then return end
+
         local buffer = hover.buffer
         buffer:setline(conjunction('标签'))
 
@@ -65,7 +111,10 @@ local strategy = {
 
         buffer:setline('')
     end,
-    exchange = function(hover, exchange)
+    exchange = function(hover, result)
+        local exchange = result.exchange
+        if not exchange then return end
+
         local buffer = hover.buffer
         buffer:setline(conjunction('词形变化'))
 
@@ -77,7 +126,10 @@ local strategy = {
 
         buffer:setline('')
     end,
-    pos = function(hover, pos)
+    pos = function(hover, result)
+        local pos = result.pos
+        if not pos then return end
+
         local buffer = hover.buffer
         buffer:setline(conjunction('词性'))
 
@@ -87,39 +139,20 @@ local strategy = {
             )
         end
 
-        buffer:setline('')
-    end,
-    translation = function(hover, translation)
-        local buffer = hover.buffer
-        buffer:setline(conjunction('中文翻译'))
-
-        for _, value in ipairs(translation) do
-            buffer:setline(
-                it(interval .. value, 'TransTranslation')
-            )
-        end
-
-        buffer:setline('')
-    end,
-    definition = function(hover, definition)
-        local buffer = hover.buffer
-        buffer:setline(conjunction('英文注释'))
-
-        for _, value in ipairs(definition) do
-            buffer:setline(
-                it(interval .. value, 'TransDefinition')
-            )
-        end
-
         buffer:setline('')
     end,
 }
 
-
-
+-- FIXME :
 
 ---@class TransHover
----@field load fun(hover: TransHover, result: TransResult, field: string)
-return function(hover, result, field)
-    strategy[field](hover, result[field])
+---@field load fun(hover: TransHover, result: TransResult, name: string, order: string[])
+return function(hover, result, name, order)
+    order = order or { 'str', 'translation', 'definition' }
+
+    local method = strategy[name]
+
+    for _, field in ipairs(order) do
+        method[field](hover, result)
+    end
 end