feat: remove history command (#2063)

* feat: remove history command

* Address code review

Co-authored-by: Michael Bøcker-Larsen <247048+mblarsen@users.noreply.github.com>

---------

Co-authored-by: Michael Bøcker-Larsen <247048+mblarsen@users.noreply.github.com>

lua/avante/history_selector.lua

@@ -31,13 +31,15 @@ function M.open(bufnr, cb)
   end
 
   if #selector_items == 0 then
-    Utils.warn("No models available in config")
+    Utils.warn("No history items found.")
     return
   end
 
-  local selector = Selector:new({
-    provider = Config.selector.provider,
-    title = "Select Avante History",
+  local current_selector -- To be able to close it from the keymap
+
+  current_selector = Selector:new({
+    provider = Config.selector.provider, -- This should be 'native' for the current setup
+    title = "Avante History (Select, then choose action)", -- Updated title
     items = vim
       .iter(selector_items)
       :map(
@@ -60,8 +62,21 @@ function M.open(bufnr, cb)
       local content = Sidebar.render_history_content(history)
       return content, "markdown"
     end,
+    on_delete_item = function(item_id_to_delete)
+      if not item_id_to_delete then
+        Utils.warn("No item ID provided for deletion.")
+        return
+      end
+      Path.history.delete(bufnr, item_id_to_delete) -- bufnr from M.open's scope
+      -- The native provider handles the UI flow; we just need to refresh.
+      M.open(bufnr, cb) -- Re-open the selector to refresh the list
+    end,
+    on_action_cancel = function()
+      -- If the user cancels the open/delete prompt, re-open the history selector.
+      M.open(bufnr, cb)
+    end,
   })
-  selector:open()
+  current_selector:open()
 end
 
 return M

lua/avante/path.lua

@@ -133,7 +133,7 @@ end
 ---@return avante.ChatHistory
 function History.load(bufnr, filename)
   local history_filepath = filename and History.get_filepath(bufnr, filename)
-    or History.get_latest_filepath(bufnr, false)
+      or History.get_latest_filepath(bufnr, false)
   if history_filepath:exists() then
     local content = history_filepath:read()
     if content ~= nil then
@@ -154,6 +154,35 @@ History.save = function(bufnr, history)
   History.save_latest_filename(bufnr, history.filename)
 end
 
+--- Deletes a specific chat history file.
+---@param bufnr integer
+---@param filename string
+function History.delete(bufnr, filename)
+  local history_filepath = History.get_filepath(bufnr, filename)
+  if history_filepath:exists() then
+    local was_latest = (filename == History.get_latest_filename(bufnr, false))
+    history_filepath:rm()
+
+    if was_latest then
+      local remaining_histories = History.list(bufnr) -- This list is sorted by recency
+      if #remaining_histories > 0 then
+        History.save_latest_filename(bufnr, remaining_histories[1].filename)
+      else
+        -- No histories left, clear the latest_filename from metadata
+        local metadata_filepath = History.get_metadata_filepath(bufnr)
+        if metadata_filepath:exists() then
+          local metadata_content = metadata_filepath:read()
+          local metadata = vim.json.decode(metadata_content)
+          metadata.latest_filename = nil -- Or "", depending on desired behavior for an empty latest
+          metadata_filepath:write(vim.json.encode(metadata), "w")
+        end
+      end
+    end
+  else
+    Utils.warn("History file not found: " .. tostring(history_filepath))
+  end
+end
+
 P.history = History
 
 -- Prompt path
@@ -210,7 +239,7 @@ function Prompt.get_templates_dir(project_root)
   end
 
   Path:new(debug.getinfo(1).source:match("@?(.*/)"):gsub("/lua/avante/path.lua$", "") .. "templates")
-    :copy({ destination = cache_prompt_dir, recursive = true })
+      :copy({ destination = cache_prompt_dir, recursive = true })
 
   vim.iter(Prompt.custom_prompts_contents):filter(function(_, v) return v ~= nil end):each(function(k, v)
     local orig_file = cache_prompt_dir:joinpath(Prompt.get_builtin_prompts_filepath(k))

lua/avante/ui/selector/init.lua

@@ -13,6 +13,8 @@ local Utils = require("avante.utils")
 ---@field provider_opts table | nil
 ---@field on_select fun(item_ids: string[] | nil)
 ---@field get_preview_content fun(item_id: string): (string, string) | nil
+---@field on_delete_item fun(item_id: string): (nil) | nil
+---@field on_action_cancel fun(): (nil) | nil
 
 ---@class avante.ui.Selector
 ---@field provider avante.SelectorProvider
@@ -23,6 +25,8 @@ local Utils = require("avante.utils")
 ---@field on_select fun(item_ids: string[] | nil)
 ---@field selected_item_ids string[] | nil
 ---@field get_preview_content fun(item_id: string): (string, string) | nil
+---@field on_delete_item fun(item_id: string): (nil) | nil
+---@field on_action_cancel fun(): (nil) | nil
 local Selector = {}
 Selector.__index = Selector
 
@@ -45,6 +49,8 @@ function Selector:new(opts)
   o.on_select = opts.on_select
   o.selected_item_ids = opts.selected_item_ids or {}
   o.get_preview_content = opts.get_preview_content
+  o.on_delete_item = opts.on_delete_item
+  o.on_action_cancel = opts.on_action_cancel
   return o
 end
 

lua/avante/ui/selector/providers/native.lua

@@ -10,10 +10,39 @@ function M.show(selector)
     prompt = selector.title,
     format_item = function(item) return item.title end,
   }, function(item)
-    if item then
-      selector.on_select({ item.id })
-    else
+    if not item then
       selector.on_select(nil)
+      return
+    end
+
+    -- If on_delete_item callback is provided, prompt for action
+    if type(selector.on_delete_item) == "function" then
+      vim.ui.input(
+        { prompt = "Action for '" .. item.title .. "': (o)pen, (d)elete, (c)ancel?", default = "" },
+        function(input)
+          if not input then -- User cancelled input
+            selector.on_select(nil) -- Treat as cancellation of selection
+            return
+          end
+          local choice = input:lower()
+          if choice == "d" or choice == "delete" then
+            selector.on_delete_item(item.id)
+          elseif choice == "" or choice == "o" or choice == "open" then
+            selector.on_select({ item.id })
+          elseif choice == "c" or choice == "cancel" then
+            if type(selector.on_action_cancel) == "function" then
+              selector.on_action_cancel()
+            else
+              selector.on_select(nil) -- Fallback if on_action_cancel is not defined
+            end
+          else -- c or any other input, treat as cancel
+            selector.on_select(nil) -- Fallback if on_action_cancel is not defined
+          end
+        end
+      )
+    else
+      -- Default behavior: directly select the item
+      selector.on_select({ item.id })
     end
   end)
 end