feat(api): enable customizable calls functions (#457)

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

lua/avante/api.lua

@@ -7,13 +7,73 @@ local Utils = require("avante.utils")
 ---@field hint ToggleBind.wrap
 ---
 ---@class avante.Api
----@field ask fun(): boolean
----@field edit fun(): nil
+---@field ask fun(question:string?): boolean
+---@field edit fun(question:string?): nil
 ---@field refresh fun(): nil
 ---@field build fun(): boolean
+---@field switch_provider fun(target: string): nil
 ---@field toggle avante.ApiToggle
 
-return setmetatable({}, {
+local M = {}
+
+---@param target Provider
+M.switch_provider = function(target)
+  require("avante.providers").refresh(target)
+end
+
+---@param question? string
+M.ask = function(question)
+  if not require("avante").toggle() then
+    return false
+  end
+  if question == nil or question == "" then
+    return true
+  end
+  vim.api.nvim_exec_autocmds("User", { pattern = "AvanteInputSubmitted", data = { request = question } })
+  return true
+end
+
+---@param question? string
+M.edit = function(question)
+  local _, selection = require("avante").get()
+  if not selection then
+    return
+  end
+  selection:create_editing_input()
+  if question ~= nil or question ~= "" then
+    vim.api.nvim_exec_autocmds("User", { pattern = "AvanteEditSubmitted", data = { request = question } })
+  end
+end
+
+M.refresh = function()
+  local sidebar, _ = require("avante").get()
+  if not sidebar then
+    return
+  end
+  if not sidebar:is_open() then
+    return
+  end
+  local curbuf = vim.api.nvim_get_current_buf()
+
+  local focused = sidebar.result.bufnr == curbuf or sidebar.input.bufnr == curbuf
+  if focused or not sidebar:is_open() then
+    return
+  end
+  local listed = vim.api.nvim_get_option_value("buflisted", { buf = curbuf })
+
+  if Utils.is_sidebar_buffer(curbuf) or not listed then
+    return
+  end
+
+  local curwin = vim.api.nvim_get_current_win()
+
+  sidebar:close()
+  sidebar.code.winid = curwin
+  sidebar.code.bufnr = curbuf
+  sidebar:render()
+end
+
+return setmetatable(M, {
   __index = function(t, k)
     local module = require("avante")
     ---@class AvailableApi: ApiCaller