Initial commit

server/internal/service/omikuji.go

@@ -0,0 +1,47 @@
+package service
+
+import (
+	"context"
+	"fmt"
+	"log"
+
+	pb "lunar-tear/server/gen/proto"
+	"lunar-tear/server/internal/gametime"
+	"lunar-tear/server/internal/masterdata"
+	"lunar-tear/server/internal/store"
+	"lunar-tear/server/internal/userdata"
+)
+
+type OmikujiServiceServer struct {
+	pb.UnimplementedOmikujiServiceServer
+	users    store.UserRepository
+	sessions store.SessionRepository
+	catalog  *masterdata.OmikujiCatalog
+}
+
+func NewOmikujiServiceServer(users store.UserRepository, sessions store.SessionRepository, catalog *masterdata.OmikujiCatalog) *OmikujiServiceServer {
+	return &OmikujiServiceServer{users: users, sessions: sessions, catalog: catalog}
+}
+
+func (s *OmikujiServiceServer) OmikujiDraw(ctx context.Context, req *pb.OmikujiDrawRequest) (*pb.OmikujiDrawResponse, error) {
+	log.Printf("[OmikujiService] OmikujiDraw: omikujiId=%d", req.OmikujiId)
+
+	userId := currentUserId(ctx, s.users, s.sessions)
+	now := gametime.NowMillis()
+
+	snapshot, err := s.users.UpdateUser(userId, func(user *store.UserState) {
+		user.DrawnOmikuji[req.OmikujiId] = now
+	})
+	if err != nil {
+		return nil, fmt.Errorf("update user: %w", err)
+	}
+
+	tables := userdata.FullClientTableMap(snapshot)
+	diff := userdata.BuildDiffFromTables(userdata.SelectTables(tables, []string{"IUserOmikuji"}))
+
+	return &pb.OmikujiDrawResponse{
+		OmikujiResultAssetId: s.catalog.LookupAssetId(req.OmikujiId),
+		OmikujiItem:          []*pb.OmikujiItem{},
+		DiffUserData:         diff,
+	}, nil
+}