package service

import (
	"fmt"
	"reflect"

	cda "git.loafle.net/commons/di-go/annotation"
	cdr "git.loafle.net/commons/di-go/registry"
	"git.loafle.net/commons/logging-go"
	ocmsc "git.loafle.net/overflow/commons-go/model/sensorconfig"

	// For annotation
	_ "git.loafle.net/overflow/commons-go/core/annotation"
)

var SensorConfigServiceType = reflect.TypeOf((*SensorConfigService)(nil))

func init() {
	cdr.RegisterType(SensorConfigServiceType)
}

type SensorConfigService struct {
	cda.TypeAnnotation `annotation:"@overflow:RPCService()"`

	CollectorService *CollectorService `annotation:"@Inject()"`

	sensorConfigs map[string]*ocmsc.SensorConfig
}

func (s *SensorConfigService) InitService() error {
	s.sensorConfigs = make(map[string]*ocmsc.SensorConfig, 0)

	return nil
}

func (s *SensorConfigService) StartService() error {

	return nil
}

func (s *SensorConfigService) StopService() {

}

func (s *SensorConfigService) DestroyService() {

}

func (s *SensorConfigService) InitConfig(sensorConfigs []*ocmsc.SensorConfig) error {
	if nil == sensorConfigs || 0 == len(sensorConfigs) {
		return nil
	}

	for _, sensorConfig := range sensorConfigs {
		s.sensorConfigs[sensorConfig.ConfigID] = sensorConfig
	}

	if err := s.CollectorService.AddSensorConfigs(sensorConfigs); nil != err {
		return err
	}

	logging.Logger().Debugf("Sensor configs[%d] were added", len(sensorConfigs))

	return nil
}

func (s *SensorConfigService) AddConfig(sensorConfig *ocmsc.SensorConfig) error {
	if nil == sensorConfig {
		return fmt.Errorf("Sensor config is not valid")
	}

	configID := sensorConfig.ConfigID
	if _, ok := s.sensorConfigs[configID]; ok {
		return fmt.Errorf("Sensor config[%s] is exist already", configID)
	}
	s.sensorConfigs[configID] = sensorConfig

	if err := s.CollectorService.AddSensorConfigs([]*ocmsc.SensorConfig{sensorConfig}); nil != err {
		return err
	}

	logging.Logger().Debugf("Sensor config[%s] was added", configID)

	return nil
}

func (s *SensorConfigService) UpdateConfig(sensorConfig *ocmsc.SensorConfig) error {
	if nil == sensorConfig {
		return fmt.Errorf("Sensor config is not valid")
	}

	configID := sensorConfig.ConfigID
	if _, ok := s.sensorConfigs[configID]; !ok {
		return fmt.Errorf("Sensor config[%s] is not exist", configID)
	}
	delete(s.sensorConfigs, configID)
	s.sensorConfigs[configID] = sensorConfig

	if err := s.CollectorService.RemoveSensorConfigs([]*ocmsc.SensorConfig{sensorConfig}); nil != err {
		return err
	}

	if err := s.CollectorService.AddSensorConfigs([]*ocmsc.SensorConfig{sensorConfig}); nil != err {
		return err
	}

	logging.Logger().Debugf("Sensor config[%s] was updated", configID)

	return nil
}

func (s *SensorConfigService) RemoveConfig(sensorConfigID string) error {
	sensorConfig, ok := s.sensorConfigs[sensorConfigID]
	if !ok {
		return fmt.Errorf("Sensor config[%s] is not exist", sensorConfigID)
	}
	delete(s.sensorConfigs, sensorConfigID)

	if err := s.CollectorService.RemoveSensorConfigs([]*ocmsc.SensorConfig{sensorConfig}); nil != err {
		return err
	}

	logging.Logger().Debugf("Sensor config[%d] was removed", sensorConfigID)
	return nil
}