local Logger = require "cave.log.logger"
local FunctionLogger = require "cave.log.function_logger"
local Meta = require "cave.meta"

local validate = Meta.validate
local Table = Meta.Table

---@class cave.ClassLogger : cave.Logger
local ClassLogger = Meta.derive("ClassLogger", Logger)

---@param cls_name string
function ClassLogger:init(cls_name)
  local prefix = cls_name
  Logger.init(self, prefix)
end

---@param cls_mt table
---@return cave.ClassLogger
function ClassLogger.new(cls_mt)
  validate { cls_mt = { cls_mt, Table } }
  local cls_name = Meta.like(cls_mt).repr
  local logger = setmetatable({}, ClassLogger)
  logger:init(cls_name)
  return logger
end

---@param args_fmt string?
---@param ... any
---@return cave.FunctionLogger
function ClassLogger:call(args_fmt, ...)
  local dbg_info
  local fn_name
  for l = 2, 1, -1 do
    dbg_info = debug.getinfo(l, "n")
    fn_name = dbg_info.name
    if fn_name then break end
  end
  if dbg_info.namewhat == "method" then
    fn_name = self.prefix .. ":" .. fn_name
  elseif dbg_info.namewhat == "field" then
    fn_name = self.prefix .. "." .. fn_name
  end
  return FunctionLogger.new(fn_name, args_fmt, ...):call()
end

return ClassLogger