package user

import (
	"encoding/json"

	"forge.cadoles.com/Cadoles/emissary/internal/auth"
	"forge.cadoles.com/Cadoles/emissary/internal/datastore"
)

type Role string

const (
	RoleWriter Role = "writer"
	RoleReader Role = "reader"
	RoleAdmin  Role = "admin"
)

func isValidRole(r string) bool {
	rr := Role(r)

	return rr == RoleWriter || rr == RoleReader || rr == RoleAdmin
}

type User struct {
	subject  string
	tenantID datastore.TenantID
	role     Role
}

// Subject implements auth.User
func (u *User) Subject() string {
	return u.subject
}

// Tenant implements auth.User
func (u *User) Tenant() datastore.TenantID {
	return u.tenantID
}

func (u *User) Role() Role {
	return u.role
}

func (u *User) MarshalJSON() ([]byte, error) {
	type user struct {
		Subject string `json:"subject"`
		Tenant  string `json:"tenant"`
		Role    string `json:"role"`
	}

	jsonUser := user{
		Subject: u.Subject(),
		Tenant:  string(u.Tenant()),
		Role:    string(u.Role()),
	}

	return json.Marshal(jsonUser)
}

var _ auth.User = &User{}