// resync-api ist der Aufrufpunkt fuer API-11: startet den bereits
// fertigen internal/resync.Handler (API-06) als eigenstaendigen
// HTTP-Dienst. REINES WIRING — keine Aenderung an internal/resync/,
// internal/audit/, internal/usage/ oder internal/moduleregistry/.
package main

import (
	"context"
	"log"
	"net/http"
	"os"
	"time"

	"github.com/jackc/pgx/v5/pgxpool"

	"gitea.perlbach24.de/scripte/nexarch/internal/audit"
	"gitea.perlbach24.de/scripte/nexarch/internal/flag"
	"gitea.perlbach24.de/scripte/nexarch/internal/moduleregistry"
	"gitea.perlbach24.de/scripte/nexarch/internal/resync"
	"gitea.perlbach24.de/scripte/nexarch/internal/usage"
)

// auditAdapter erfüllt resync.AuditRecorder über den bestehenden
// audit.Log-Schreibpfad — kein neuer Audit-Code, nur Signatur-Anpassung
// (audit.Log.Record nimmt ein Event-Struct, resync.AuditRecorder einzelne
// Felder).
type auditAdapter struct{ log *audit.Log }

func (a auditAdapter) Record(ctx context.Context, tenantSlug, actor, action, target string, metadata map[string]any, occurredAt time.Time) error {
	return a.log.Record(ctx, audit.Event{
		TenantSlug: tenantSlug, Actor: actor, Action: action, Target: target,
		Metadata: metadata, OccurredAt: occurredAt,
	})
}

func main() {
	registryDSN := os.Getenv("NEXARCH_RESYNC_REGISTRY_DSN")
	if registryDSN == "" {
		log.Fatal("NEXARCH_RESYNC_REGISTRY_DSN muss gesetzt sein")
	}
	addr := os.Getenv("NEXARCH_RESYNC_API_LISTEN_ADDR")
	if addr == "" {
		addr = "127.0.0.1:8098"
	}

	ctx := context.Background()
	pool, err := pgxpool.New(ctx, registryDSN)
	if err != nil {
		log.Fatalf("datenbankverbindung: %v", err)
	}
	defer pool.Close()

	flagStore := flag.NewStore(pool)
	flagService := flag.NewService(flagStore, 30*time.Second)
	registry := moduleregistry.NewRegistry(pool, flagService)
	auditLog := audit.NewLog(pool)
	usageStore := usage.NewStore(pool)

	handler := resync.NewHandler(registry, auditAdapter{log: auditLog}, usageStore)

	mux := http.NewServeMux()
	mux.HandleFunc("/internal/resync/audit", handler.AuditHandler)
	mux.HandleFunc("/internal/resync/usage", handler.UsageHandler)
	mux.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) { w.WriteHeader(http.StatusOK) })

	log.Printf("resync-api: listening on %s", addr)
	if err := http.ListenAndServe(addr, mux); err != nil {
		log.Fatalf("http server: %v", err)
	}
}