package bus

import (
	merrors "git.sendico.io/tech/sxchnge/shared/errors"
	"git.sendico.io/tech/sxchnge/shared/messaging/reliable"
)

// Config composes canonical shared messaging settings for this service's queue.
type Config struct {
	Stream       reliable.DurableStreamSettings       `yaml:"stream"`
	Provisioning reliable.DurableProvisioningSettings `yaml:"provisioning"`
}

func DefaultConfig() Config {
	return Config{
		Stream:       reliable.DurableStreamSettings{Name: "SXCHNGE_NOTIFICATIONS", Subjects: []string{subject}, Storage: "file", MaxAgeHours: 48, Replicas: 1},
		Provisioning: reliable.DurableProvisioningSettings{Mode: reliable.DurableProvisioningApp, Environment: reliable.DurableEnvironmentNonProduction},
	}
}
func (c Config) Validate() error {
	if c.Stream.Name != "SXCHNGE_NOTIFICATIONS" || len(c.Stream.Subjects) != 1 || c.Stream.Subjects[0] != subject || c.Stream.Storage != "file" || c.Stream.MaxAgeHours < 48 || c.Stream.MaxAgeHours > 24*30 {
		return merrors.InvalidArgument("invalid notifications stream configuration")
	}
	if c.Stream.Replicas != 1 && c.Stream.Replicas != 3 && c.Stream.Replicas != 5 {
		return merrors.InvalidArgument("stream replicas must be 1, 3 or 5")
	}
	switch c.Provisioning.Mode {
	case reliable.DurableProvisioningApp, reliable.DurableProvisioningOps, reliable.DurableProvisioningHybrid:
	default:
		return merrors.InvalidArgument("invalid stream provisioning mode")
	}
	switch c.Provisioning.Environment {
	case reliable.DurableEnvironmentProduction, reliable.DurableEnvironmentNonProduction:
	default:
		return merrors.InvalidArgument("invalid stream provisioning environment")
	}
	return nil
}