package handler

import (
	"management/internal/config"
	"management/internal/erpserver/biz"
	"management/internal/erpserver/handler/common"
	"management/internal/erpserver/handler/system"
	"management/internal/pkg/session"
	"management/internal/pkg/tpl"
)

// IHandler 定义了Handler需要实现的方法.
type IHandler interface {
	// 获取 Common Handler 接口.
	CommonHandler() common.CommonHandler
	// 获取 System Handler 接口.
	SystemHandler() system.SystemHandler
}

// handler 是 IHandler 的一个具体实现.
type handler struct {
	conf    *config.Config
	render  tpl.Renderer
	session session.ISession
	biz     biz.IBiz
}

// 确保 handler 实现了 IHandler 接口.
var _ IHandler = (*handler)(nil)

// NewHandler 创建一个 IHandler 类型的实例.
func NewHandler(conf *config.Config, render tpl.Renderer, session session.ISession, biz biz.IBiz) *handler {
	return &handler{
		conf:    conf,
		render:  render,
		session: session,
		biz:     biz,
	}
}

// CommonHandler 返回一个实现了 CommonHandler 接口的实例.
func (h *handler) CommonHandler() common.CommonHandler {
	return common.NewCommonHandler(h.conf, h.render, h.biz.CommonV1())
}

// SystemHandler 返回一个实现了 SystemHandler 接口的实例.
func (h *handler) SystemHandler() system.SystemHandler {
	return system.NewSystemHandler(h.render, h.session, h.biz)
}