package initialization

import (
	"fmt"
	"github.com/casbin/casbin/v2"
	"github.com/casbin/casbin/v2/model"
	gormAdapter "github.com/casbin/gorm-adapter/v3"
	"go_api_tmpl/global"
)

// Casbin 初始化Casbin的RABC模型
func Casbin() {
	// Initialize  casbin adapter
	adapter, err := gormAdapter.NewAdapterByDBUseTableName(global.MySQLConn, "", "t_role_rule")
	if err != nil {
		panic(fmt.Sprintf("failed to initialize casbin adapter: %v", err))
	}

	// 初始化模型
	model := model.NewModel()
	model.AddDef("r", "r", "sub, obj, act")
	model.AddDef("p", "p", "sub, obj, act")
	model.AddDef("g", "g", "_, _")
	model.AddDef("e", "e", "some(where (p.eft == allow))")
	// 匹配规则(下面的规则适用与根据Gin的Route的Path和Method做校验，最后那个r.sub == 1是用来判断超级管理员的)
	model.AddDef("m", "m", "g(r.sub, p.sub) && keyMatch2(r.obj, p.obj) && regexMatch(r.act, p.act) || r.sub == \"1\"")

	enf, err := casbin.NewEnforcer(model, adapter)
	if err != nil {
		panic(fmt.Sprintf("failed to create casbin enforcer: %v", err))
	}
	global.Enforcer = enf
}