// Package admin provides a Unix domain socket server for local administration.
package admin

import (
	"context"
	"database/sql"
	"log/slog"
	"net"

	"github.com/synapbus/synapbus/internal/agents"
	"github.com/synapbus/synapbus/internal/attachments"
	"github.com/synapbus/synapbus/internal/auth"
	"github.com/synapbus/synapbus/internal/channels"
	"github.com/synapbus/synapbus/internal/k8s"
	"github.com/synapbus/synapbus/internal/messaging"
	"github.com/synapbus/synapbus/internal/search"
	"github.com/synapbus/synapbus/internal/trace"
	"github.com/synapbus/synapbus/internal/webhooks"
)

// WebhookServiceProvider defines the webhook operations needed by the admin socket.
type WebhookServiceProvider interface {
	RegisterWebhook(ctx context.Context, agentName, url string, events []string, secret string) (*webhooks.Webhook, error)
	ListWebhooks(ctx context.Context, agentName string) ([]*webhooks.Webhook, error)
	DeleteWebhook(ctx context.Context, agentName string, webhookID int64) error
}

// K8sServiceProvider defines the K8s handler operations needed by the admin socket.
type K8sServiceProvider interface {
	RegisterHandler(ctx context.Context, agentName string, req k8s.RegisterHandlerRequest) (*k8s.K8sHandler, error)
	ListHandlers(ctx context.Context, agentName string) ([]*k8s.K8sHandler, error)
	DeleteHandler(ctx context.Context, agentName string, handlerID int64) error
}

// Services holds references to all services the admin socket can control.
type Services struct {
	Users              *auth.SQLiteUserStore
	Sessions           auth.SessionStore
	Agents             *agents.AgentService
	Messages           *messaging.MessagingService
	Channels           *channels.Service
	Traces             trace.TraceStore
	EmbeddingStore     *search.EmbeddingStore
	VectorIndex        *search.VectorIndex
	SearchService      *search.Service
	AttachmentService  *attachments.Service
	WebhookService     WebhookServiceProvider
	K8sService         K8sServiceProvider
	DataDir            string
	RetentionWorker    RetentionStatusProvider
}

// RetentionStatusProvider provides retention status information.
type RetentionStatusProvider interface {
	Status() map[string]interface{}
}

// AdminServer is a Unix domain socket server for local administration.
type AdminServer struct {
	listener   net.Listener
	db         *sql.DB
	services   *Services
	logger     *slog.Logger
	socketPath string
	done       chan struct{}
}

// NewServer creates a new admin server bound to a Unix socket at {dataDir}/synapbus.sock.
// If socketPath is non-empty it overrides the default.
func NewServer(socketPath string, db *sql.DB, services *Services, logger *slog.Logger) *AdminServer {
	return &AdminServer{
		db:         db,
		services:   services,
		logger:     logger.With("component", "admin"),
		socketPath: socketPath,
		done:       make(chan struct{}),
	}
}

// SocketPath returns the path to the Unix socket.
func (s *AdminServer) SocketPath() string {
	return s.socketPath
}