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package switchtracker
import (
"context"
"errors"
"log/slog"
"github.com/twitchtv/twirp"
"google.golang.org/protobuf/types/known/emptypb"
"gorm.io/gorm"
"within.website/x/cmd/mi/models"
pb "within.website/x/proto/mi"
)
type SwitchTracker struct {
db *gorm.DB
dao *models.DAO
}
func New(dao *models.DAO) *SwitchTracker {
return &SwitchTracker{
dao: dao,
}
}
func (s *SwitchTracker) Members(ctx context.Context, _ *emptypb.Empty) (*pb.MembersResp, error) {
members, err := s.dao.Members(ctx)
if err != nil {
return nil, twirp.InternalErrorWith(err)
}
var resp pb.MembersResp
for _, m := range members {
resp.Members = append(resp.Members, m.AsProto())
}
return &resp, nil
}
func (s *SwitchTracker) WhoIsFront(ctx context.Context, _ *emptypb.Empty) (*pb.FrontChange, error) {
sw, err := s.dao.WhoIsFront(ctx)
if err != nil {
slog.Error("can't find who is front", "err", err)
switch {
case errors.Is(err, gorm.ErrRecordNotFound):
return nil, twirp.NotFoundError("can't find current switch")
default:
return nil, twirp.InternalErrorWith(err)
}
}
slog.Info("current front", "sw", sw)
return sw.AsFrontChange(), nil
}
func (s *SwitchTracker) Switch(ctx context.Context, req *pb.SwitchReq) (*pb.SwitchResp, error) {
if err := req.Valid(); err != nil {
slog.Error("can't switch without a member", "req", req, "err", err)
return nil, twirp.InvalidArgumentError("member_name", err.Error())
}
old, new, err := s.dao.SwitchFront(ctx, req.GetMemberName())
if err != nil {
slog.Error("can't switch front", "req", req, "err", err)
switch {
case errors.Is(err, models.ErrCantSwitchToYourself):
twirp.InvalidArgumentError("member_name", "cannot switch to yourself").
WithMeta("member_name", req.GetMemberName())
case errors.Is(err, gorm.ErrRecordNotFound):
return nil, twirp.NotFoundError("can't find current switch")
default:
return nil, twirp.InternalErrorWith(err)
}
}
return &pb.SwitchResp{
Old: old.AsProto(),
Current: new.AsProto(),
}, nil
}
func (s *SwitchTracker) GetSwitch(ctx context.Context, req *pb.GetSwitchReq) (*pb.FrontChange, error) {
if err := req.Valid(); err != nil {
slog.Error("can't get switch by ID", "req", req, "err", err)
return nil, twirp.InvalidArgumentError("id", err.Error())
}
sw, err := s.dao.GetSwitch(ctx, req.GetId())
if err != nil {
slog.Error("can't get switch", "req", req, "err", err)
switch {
case errors.Is(err, gorm.ErrRecordNotFound):
return nil, twirp.NotFoundError("can't find switch").
WithMeta("id", req.GetId())
default:
return nil, twirp.InternalErrorWith(err)
}
}
return sw.AsFrontChange(), nil
}
func (s *SwitchTracker) ListSwitches(ctx context.Context, req *pb.ListSwitchesReq) (*pb.ListSwitchesResp, error) {
var switches []models.Switch
if req.GetCount() == 0 {
req.Count = 30
}
switches, err := s.dao.ListSwitches(ctx, int(req.GetCount()), int(req.GetPage()))
if err != nil {
slog.Error("can't get switches", "req", req, "err", err)
switch {
case errors.Is(err, gorm.ErrRecordNotFound):
return nil, twirp.NotFoundError("can't find switch info")
default:
return nil, twirp.InternalErrorWith(err)
}
}
if len(switches) == 0 {
return nil, twirp.NotFoundError("no switches returned")
}
var resp pb.ListSwitchesResp
for _, sw := range switches {
resp.Switches = append(resp.Switches, sw.AsFrontChange())
}
return &resp, nil
}
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