Implement Leaderboard Service #29
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Collaborator
VishakhaSainani-Josh
commented
Jul 11, 2025
VishakhaSainani-Josh
commented
- Get all users ranking
- Get current user ranking
internal/app/user/service.go
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| serviceLeaderboard := make([]LeaderboardUser, len(leaderboard)) | ||
| for i, l := range leaderboard { | ||
| serviceLeaderboard[i] = LeaderboardUser((l)) |
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extra bracket
internal/app/user/service.go
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| } | ||
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| func (s *service) GetAllUsersRank(ctx context.Context) ([]LeaderboardUser, error) { | ||
| leaderboard, err := s.userRepository.GetAllUsersRank(ctx, nil) |
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leaderboard naming is bit confusing, could you change it.
userRanks would be good, so that can update the serviceLeaderboard to leaderboard if needed.
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| getAllUsersRankQuery = ` | ||
| SELECT | ||
| id, | ||
| github_username, | ||
| avatar_url, | ||
| current_balance, | ||
| RANK() over (ORDER BY current_balance DESC) AS rank | ||
| FROM users | ||
| ORDER BY current_balance DESC` |
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Do we have index on current_balance?, would be good to add an index on it when using RANK()
CREATE INDEX idx_users_current_balance ON users(current_balance DESC);
internal/repository/user.go
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| } | ||
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| func (ur *userRepository) GetCurrentUserRank(ctx context.Context, tx *sqlx.Tx) (LeaderboardUser, error) { | ||
| userIdValue := ctx.Value(middleware.UserIdKey) |
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read ctx in handler, and pass it through service and then repo.
Keep repo layer independent of context value.
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