feat: enable override prompt templates directory (#2387)

README.md

@@ -1116,7 +1116,9 @@ By default, `avante.nvim` provides three different modes to interact with: `plan
 - `suggesting`: Used with `require("avante").get_suggestion():suggest()` on Tab flow.
 - `cursor-planning`: Used with `require("avante").toggle()` on Tab flow, but only when cursor planning mode is enabled.
 
-Users can customize the system prompts via `Config.system_prompt`. We recommend calling this in a custom Autocmds depending on your need:
+Users can customize the system prompts via `Config.system_prompt` or `Config.override_prompt_dir`.
+
+`Config.system_prompt` allows you to set a global system prompt. We recommend calling this in a custom Autocmds depending on your need:
 
 ```lua
 vim.api.nvim_create_autocmd("User", {
@@ -1127,7 +1129,29 @@ vim.api.nvim_create_autocmd("User", {
 vim.keymap.set("n", "<leader>am", function() vim.api.nvim_exec_autocmds("User", { pattern = "ToggleMyPrompt" }) end, { desc = "avante: toggle my prompt" })
 ```
 
-If one wish to custom prompts for each mode, `avante.nvim` will check for project root based on the given buffer whether it contains
+`Config.override_prompt_dir` allows you to specify a directory containing your own custom prompt templates, which will override the built-in templates. This is useful if you want to maintain a set of custom prompts outside of your Neovim configuration. It can be a string representing the directory path, or a function that returns a string representing the directory path.
+
+```lua
+-- Example: Override with prompts from a specific directory
+require("avante").setup({
+  override_prompt_dir = vim.fn.expand("~/.config/nvim/avante_prompts"),
+})
+
+-- Example: Override with prompts from a function (dynamic directory)
+require("avante").setup({
+  override_prompt_dir = function()
+    -- Your logic to determine the prompt directory
+    return vim.fn.expand("~/.config/nvim/my_dynamic_prompts")
+  end,
+})
+```
+
+> [!WARNING]
+>
+> If you customize `base.avanterules`, please ensure that `{% block custom_prompt %}{% endblock %}` and `{% block extra_prompt %}{% endblock %}` exist, otherwise the entire plugin may become unusable.
+> If you are unsure about the specific reasons or what you are doing, please do not override the built-in prompts. The built-in prompts work very well.
+
+If you wish to custom prompts for each mode, `avante.nvim` will check for project root based on the given buffer whether it contains
 the following patterns: `*.{mode}.avanterules`.
 
 The rules for root hierarchy:

README_zh.md

@@ -940,7 +940,9 @@ Avante 利用 [Claude 文本编辑器工具](https://docs.anthropic.com/en/docs/
 - `suggesting`：与 Tab 流上的 `require("avante").get_suggestion():suggest()` 一起使用。
 - `cursor-planning`：与 Tab 流上的 `require("avante").toggle()` 一起使用，但仅在启用 cursor 规划模式时。
 
-用户可以通过 `Config.system_prompt` 自定义系统提示。我们建议根据您的需要在自定义 Autocmds 中调用此方法：
+用户可以通过 `Config.system_prompt` 或 `Config.override_prompt_dir` 自定义系统提示。
+
+`Config.system_prompt` 允许您设置全局系统提示。我们建议根据您的需要在自定义 Autocmds 中调用此方法：
 
 ```lua
 vim.api.nvim_create_autocmd("User", {
@@ -951,6 +953,28 @@ vim.api.nvim_create_autocmd("User", {
 vim.keymap.set("n", "<leader>am", function() vim.api.nvim_exec_autocmds("User", { pattern = "ToggleMyPrompt" }) end, { desc = "avante: toggle my prompt" })
 ```
 
+`Config.override_prompt_dir` 允许您指定一个目录，其中包含您自己的自定义提示模板，这将覆盖内置模板。如果您想在 Neovim 配置之外维护一组自定义提示，这将非常有用。它可以是一个表示目录路径的字符串，也可以是一个返回表示目录路径的字符串的函数。
+
+```lua
+-- 示例：使用特定目录中的提示进行覆盖
+require("avante").setup({
+  override_prompt_dir = vim.fn.expand("~/.config/nvim/avante_prompts"),
+})
+
+-- 示例：使用函数（动态目录）中的提示进行覆盖
+require("avante").setup({
+  override_prompt_dir = function()
+    -- 确定提示目录的逻辑
+    return vim.fn.expand("~/.config/nvim/my_dynamic_prompts")
+  end,
+})
+```
+
+> [!WARNING]
+>
+> 如果您自定 `base.avanterules`，请一定要确保 `{% block custom_prompt %}{% endblock %}` 和 `{% block extra_prompt %}{% endblock %}` 存在，否则可能会导致整个插件无法使用。
+> 如果您不清楚具体原因或者您不知道自己在干什么，请不要覆盖内置 prompt。内置 prompt 工作得非常好。
+
 如果希望为每种模式自定义提示，`avante.nvim` 将根据给定缓冲区的项目根目录检查是否包含以下模式：`*.{mode}.avanterules`。
 
 根目录层次结构的规则：

lua/avante/config.lua

@@ -38,8 +38,10 @@ M._defaults = {
   -- For most providers that we support we will determine this automatically.
   -- If you wish to use a given implementation, then you can override it here.
   tokenizer = "tiktoken",
-  ---@type string | (fun(): string) | nil
+  ---@type string | fun(): string | nil
   system_prompt = nil,
+  ---@type string | fun(): string | nil
+  override_prompt_dir = nil,
   rules = {
     project_dir = nil, ---@type string | nil (could be relative dirpath)
     global_dir = nil, ---@type string | nil (absolute dirpath)

lua/avante/path.lua

@@ -7,6 +7,7 @@ local Config = require("avante.config")
 ---@class avante.Path
 ---@field history_path Path
 ---@field cache_path Path
+---@field data_path Path
 local P = {}
 
 ---@param bufnr integer | nil
@@ -243,6 +244,45 @@ function Prompt.get_templates_dir(project_root)
     end
   end
 
+  -- Check for override prompt
+  local override_prompt_dir = Config.override_prompt_dir
+  if override_prompt_dir then
+    -- Handle the case where override_prompt_dir is a function
+    if type(override_prompt_dir) == "function" then
+      local ok, result = pcall(override_prompt_dir)
+      if ok and result then override_prompt_dir = result end
+    end
+
+    if override_prompt_dir then
+      local user_template_path = Path:new(override_prompt_dir)
+      if user_template_path:exists() then
+        local user_scanner = Scan.scan_dir(user_template_path:absolute(), { depth = 1, add_dirs = false })
+        for _, entry in ipairs(user_scanner) do
+          local file = Path:new(entry)
+          if file:is_file() then
+            local pieces = vim.split(entry, "/")
+            local piece = pieces[#pieces]
+
+            if piece == "base.avanterules" then
+              local content = file:read()
+
+              if not content:match("{%% block extra_prompt %%}[%s,\\n]*{%% endblock %%}") then
+                file:write("{% block extra_prompt %}\n", "a")
+                file:write("{% endblock %}\n", "a")
+              end
+
+              if not content:match("{%% block custom_prompt %%}[%s,\\n]*{%% endblock %%}") then
+                file:write("{% block custom_prompt %}\n", "a")
+                file:write("{% endblock %}", "a")
+              end
+            end
+            file:copy({ destination = cache_prompt_dir:joinpath(piece) })
+          end
+        end
+      end
+    end
+  end
+
   if Config.rules.project_dir then
     local project_rules_path = Path:new(Config.rules.project_dir)
     if not project_rules_path:is_absolute() then project_rules_path = directory:joinpath(project_rules_path) end
@@ -251,8 +291,12 @@ function Prompt.get_templates_dir(project_root)
   find_rules(Config.rules.global_dir)
   find_rules(directory:absolute())
 
-  Path:new(debug.getinfo(1).source:match("@?(.*/)"):gsub("/lua/avante/path.lua$", "") .. "templates")
-    :copy({ destination = cache_prompt_dir, recursive = true })
+  -- Copy built-in templates to cache directory (only if not overridden by user templates)
+  Path:new(debug.getinfo(1).source:match("@?(.*/)"):gsub("/lua/avante/path.lua$", "") .. "templates"):copy({
+    destination = cache_prompt_dir,
+    recursive = true,
+    override = false,
+  })
 
   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))