package handlers

import (
	"net/http"

	"github.com/Fimeg/RedFlag/aggregator-server/internal/services"
	"github.com/gin-gonic/gin"
)

// SystemHandler handles system-level operations
type SystemHandler struct {
	signingService *services.SigningService
}

// NewSystemHandler creates a new system handler
func NewSystemHandler(ss *services.SigningService) *SystemHandler {
	return &SystemHandler{
		signingService: ss,
	}
}

// GetPublicKey returns the server's Ed25519 public key for signature verification
// This allows agents to fetch the public key at runtime instead of embedding it at build time
func (h *SystemHandler) GetPublicKey(c *gin.Context) {
	if h.signingService == nil {
		c.JSON(http.StatusServiceUnavailable, gin.H{
			"error": "signing service not configured",
			"hint":  "Set REDFLAG_SIGNING_PRIVATE_KEY environment variable",
		})
		return
	}

	pubKeyHex := h.signingService.GetPublicKey()
	fingerprint := h.signingService.GetPublicKeyFingerprint()

	c.JSON(http.StatusOK, gin.H{
		"public_key":  pubKeyHex,
		"fingerprint": fingerprint,
		"algorithm":   "ed25519",
		"key_size":    32,
	})
}

// GetSystemInfo returns general system information
func (h *SystemHandler) GetSystemInfo(c *gin.Context) {
	c.JSON(http.StatusOK, gin.H{
		"version":     "v0.1.21",
		"name":        "RedFlag Aggregator",
		"description": "Self-hosted update management platform",
		"features": []string{
			"agent_management",
			"update_tracking",
			"command_execution",
			"ed25519_signing",
		},
	})
}