feat: remember the last selected model (#2518)

Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>
Co-authored-by: yetone <yetoneful@gmail.com>

lua/avante/config.lua

@@ -684,8 +684,50 @@ M._defaults = {
 ---@diagnostic disable-next-line: missing-fields
 M._options = {}
 
----@param opts? avante.Config
+--- Function to save the last used model
+---@param model_name string
+function M.save_last_model(model_name, provider_name)
+  local config_dir = Utils.join_paths(vim.fn.expand("~"), ".config", "avante.nvim")
+  local storage_path = Utils.join_paths(config_dir, "config.json")
+
+  -- 确保目录存在
+  if not Utils.path_exists(config_dir) then vim.fn.mkdir(config_dir, "p") end
+
+  local file = io.open(storage_path, "w")
+  if file then
+    file:write(vim.json.encode({ last_model = model_name, last_provider = provider_name }))
+    file:close()
+  end
+end
+
+--- Function to load the last used model
+---@return string|nil, string|nil
+function M.load_last_model()
+  local config_dir = Utils.join_paths(vim.fn.expand("~"), ".config", "avante.nvim")
+  local storage_path = Utils.join_paths(config_dir, "config.json")
+  local file = io.open(storage_path, "r")
+  if file then
+    local content = file:read("*a")
+    file:close()
+    if content and content ~= "" then
+      local success, data = pcall(vim.json.decode, content)
+      if success and data and data.last_model and data.last_provider then
+        return data.last_model, data.last_provider
+      elseif success and data and data.last_model then
+        return data.last_model, nil
+      else
+        Utils.warn("Invalid or corrupt JSON in last model file: " .. storage_path, { title = "Avante" })
+      end
+    else
+      Utils.warn("Last model file is empty: " .. storage_path, { title = "Avante" })
+    end
+  end
+  return nil
+end
+
+---@param opts table<string, any>|nil -- Optional table parameter for configuration settings
 function M.setup(opts)
+  opts = opts or {} -- Ensure `opts` is defined with a default table
   if vim.fn.has("nvim-0.11") == 1 then
     vim.validate("opts", opts, "table", true)
   else
@@ -819,6 +861,18 @@ function M.setup(opts)
     }
   )
 
+  local last_model, last_provider = M.load_last_model()
+  if last_model then
+    if last_provider then merged.provider = last_provider end
+    if merged.providers and merged.provider and merged.providers[merged.provider] then
+      merged.providers[merged.provider].model = last_model
+      Utils.info(
+        "Using last model: " .. merged.provider .. "/" .. merged.providers[merged.provider].model,
+        { title = "Avante" }
+      )
+    end
+  end
+
   M._options = merged
 
   ---@diagnostic disable-next-line: undefined-field

lua/avante/history/init.lua

@@ -64,10 +64,10 @@ local function collect_tool_info(messages)
       if use.name == "view" or Utils.is_edit_tool_use(use) then
         if use.input.path then
           local path = Utils.uniform_path(use.input.path)
-          tools[use.id] = { kind = use.name == "view" and "view" or "edit", use = use, path = path }
+          if use.id then tools[use.id] = { kind = use.name == "view" and "view" or "edit", use = use, path = path } end
         end
       else
-        tools[use.id] = { kind = "other", use = use }
+        if use.id then tools[use.id] = { kind = "other", use = use } end
       end
       goto continue
     end

lua/avante/llm.lua

@@ -707,11 +707,19 @@ function M.curl(opts)
         -- Mark as completed first to prevent error handler from running
         completed = true
 
-        -- Attempt to shutdown the active job, but ignore any errors
-        xpcall(function() active_job:shutdown() end, function(err)
-          Utils.debug("Ignored error during job shutdown: " .. vim.inspect(err))
-          return err
-        end)
+        -- 检查 active_job 的状态
+        local job_is_alive = pcall(function() return active_job:is_closing() == false end)
+
+        -- 只有当 job 仍然活跃时才尝试关闭它
+        if job_is_alive then
+          -- Attempt to shutdown the active job, but ignore any errors
+          xpcall(function() active_job:shutdown() end, function(err)
+            Utils.debug("Ignored error during job shutdown: " .. vim.inspect(err))
+            return err
+          end)
+        else
+          Utils.debug("Job already closed, skipping shutdown")
+        end
 
         Utils.debug("LLM request cancelled")
         active_job = nil

lua/avante/model_selector.lua

@@ -119,6 +119,8 @@ function M.open()
     if provider_cfg then provider_cfg.model = choice.model end
 
     Utils.info("Switched to model: " .. choice.name)
+    -- Persist last used provider and model
+    Config.save_last_model(choice.model, choice.provider_name)
   end
 
   local selector = Selector:new({