refactor: session expiration handler

lua/leetcode/api/auth.lua

@@ -36,7 +36,7 @@ function Auth.handle(res, err)
     err = {}
 
     if (not config.is_cn and auth.id == vim.NIL) or (config.is_cn and auth.slug == vim.NIL) then
-        err.msg = "Session expired?"
+        err.msg = "Cookie expired?"
     elseif not auth.is_signed_in then
         err.msg = "Sign-in failed"
     elseif not auth.is_verified then

lua/leetcode/api/statistics.lua

@@ -135,9 +135,16 @@ function statistics.streak(cb)
             if err then
                 return cb(nil, err)
             end
+
             local data = res.data
             local streak = data["streakCounter"]
-            cb(streak)
+
+            if streak == vim.NIL then
+                err = { msg = "Failed to load streak counter" }
+                cb(nil, err)
+            else
+                cb(streak)
+            end
         end,
     })
 end

lua/leetcode/api/utils.lua

@@ -152,8 +152,9 @@ function utils.check_err(err)
 
     if err.status then
         if err.status == 401 or err.status == 403 then
-            require("leetcode.command").expire()
-            err.msg = "Session expired? Enter a new cookie to keep using `leetcode.nvim`"
+            -- require("leetcode.command").expire()
+            err.msg =
+                "Your cookie may have expired, or LeetCode has temporarily restricted API access"
         end
     end