package main

import (
	"github.com/casbin/casbin/v2"
	fileadapter "github.com/casbin/casbin/v2/persist/file-adapter"
	sessionrolemanager "github.com/casbin/session-role-manager"
)

func main() {
	// NewEnforcer(modelPath, policyPath) automatically uses the default
	// role manager when loading policy. So if we want to use a custom
	// role manager, and this role manager relies on Casbin policy,
	// we should manually set the role manager before loading policy.
	e, err := casbin.NewEnforcer("examples/rbac_model_with_sessions.conf")
	if err != nil {
		panic(err)
	}

	// Manually set an adapter.
	a := fileadapter.NewAdapter("examples/rbac_policy_with_sessions.csv")
	e.SetAdapter(a)

	// Use our role manager.
	rm := sessionrolemanager.NewRoleManager(10)
	e.SetRoleManager(rm)

	// If our role manager relies on Casbin policy (like reading "g"
	// policy rules), then we have to set the role manager before loading
	// policy.
	//
	// Otherwise, we can set the role manager at any time, because role
	// manager has nothing to do with the adapter.
	e.LoadPolicy()

	// Check the permission.
	// the 4th arg is the querying time in UNIX time format.
	e.Enforce("alice", "data1", "read", "1508503308708987131")
}