package app

import (
	"context"
	"fmt"

	"gitea.dwysokinski.me/twhelp/core/internal/domain"
)

type ServerSnapshotRepository interface {
	// Create persists tribe snapshots in a store (e.g. Postgres).
	// Duplicates are ignored.
	Create(ctx context.Context, params ...domain.CreateServerSnapshotParams) error
	ListWithRelations(
		ctx context.Context,
		params domain.ListServerSnapshotsParams,
	) (domain.ListServerSnapshotsWithRelationsResult, error)
}

type ServerSnapshotService struct {
	repo      ServerSnapshotRepository
	serverSvc *ServerService
	pub       SnapshotPublisher
}

func NewServerSnapshotService(
	repo ServerSnapshotRepository,
	serverSvc *ServerService,
	pub SnapshotPublisher,
) *ServerSnapshotService {
	return &ServerSnapshotService{repo: repo, serverSvc: serverSvc, pub: pub}
}

func (svc *ServerSnapshotService) Create(
	ctx context.Context,
	createSnapshotsCmdPayload domain.CreateSnapshotsCmdPayload,
) error {
	versionCode := createSnapshotsCmdPayload.VersionCode()
	serverKey := createSnapshotsCmdPayload.ServerKey()
	date := createSnapshotsCmdPayload.Date()

	server, err := svc.serverSvc.GetNormalByVersionCodeAndServerKey(ctx, versionCode, serverKey)
	if err != nil {
		return fmt.Errorf("%s: %w", serverKey, err)
	}

	if !server.Open() {
		return nil
	}

	params, err := domain.NewCreateServerSnapshotParams(server, date)
	if err != nil {
		return fmt.Errorf("%s: %w", serverKey, err)
	}

	if err = svc.repo.Create(ctx, params); err != nil {
		return fmt.Errorf("%s: %w", serverKey, err)
	}

	if err = svc.serverSvc.UpdateSnapshotCreatedAt(ctx, serverKey); err != nil {
		return fmt.Errorf("%s: %w", serverKey, err)
	}

	return nil
}

func (svc *ServerSnapshotService) ListWithRelations(
	ctx context.Context,
	params domain.ListServerSnapshotsParams,
) (domain.ListServerSnapshotsWithRelationsResult, error) {
	return svc.repo.ListWithRelations(ctx, params)
}