// Package config provides configuration loading for SPIRE plugins.
// SPIRE plugins receive configuration via HCL in the SPIRE server/agent config file.
package config

import (
	"fmt"
)

// PluginConfig holds common configuration fields shared by all Guildhouse SPIRE plugins.
type PluginConfig struct {
	// GovernanceAddr is the gRPC address of the GovernanceService.
	GovernanceAddr string `hcl:"governance_addr"`

	// CeremonyAddr is the gRPC address of the CeremonyService.
	CeremonyAddr string `hcl:"ceremony_addr"`

	// NotaryAddr is the gRPC address of the NotaryService.
	NotaryAddr string `hcl:"notary_addr"`

	// TrustDomain is the SPIFFE trust domain.
	TrustDomain string `hcl:"trust_domain"`

	// ClusterID identifies this cluster for notary anchoring.
	ClusterID string `hcl:"cluster_id"`
}

// Validate checks that required fields are present.
func (c *PluginConfig) Validate() error {
	if c.TrustDomain == "" {
		return fmt.Errorf("config: trust_domain is required")
	}
	return nil
}

// LoadFromHCL parses plugin configuration from HCL bytes.
// TODO: implement — use hashicorp/hcl to parse configuration.
func LoadFromHCL(data []byte) (*PluginConfig, error) {
	return nil, fmt.Errorf("config: LoadFromHCL not yet implemented")
}