Initial commit: Open sourcing all of the Maple Open Technologies code.

cloud/maplefile-backend/internal/repo/inviteemailratelimit/get.go

@@ -0,0 +1,40 @@
+package inviteemailratelimit
+
+import (
+	"context"
+	"time"
+
+	"github.com/gocql/gocql"
+	"go.uber.org/zap"
+)
+
+// GetDailyEmailCount returns the number of invitation emails sent by a user on the given date.
+// Returns 0 if no record exists (user hasn't sent any invites today).
+func (r *repositoryImpl) GetDailyEmailCount(ctx context.Context, userID gocql.UUID, date time.Time) (int, error) {
+	r.logger.Debug("Getting daily email count",
+		zap.String("user_id", userID.String()),
+		zap.Time("date", date))
+
+	// Normalize date to midnight UTC
+	dateOnly := date.UTC().Truncate(24 * time.Hour)
+
+	var count int64
+	query := r.session.Query(`
+		SELECT emails_sent_today
+		FROM invite_email_rate_limits_by_user_id_and_date
+		WHERE user_id = ? AND date = ?
+	`, userID, dateOnly).WithContext(ctx)
+
+	if err := query.Scan(&count); err != nil {
+		if err == gocql.ErrNotFound {
+			// No record means no emails sent today
+			return 0, nil
+		}
+		r.logger.Error("Failed to get daily email count",
+			zap.String("user_id", userID.String()),
+			zap.Error(err))
+		return 0, err
+	}
+
+	return int(count), nil
+}

cloud/maplefile-backend/internal/repo/inviteemailratelimit/impl.go

@@ -0,0 +1,36 @@
+// Package inviteemailratelimit provides rate limiting for invitation emails
+// using Cassandra counter tables.
+package inviteemailratelimit
+
+import (
+	"context"
+	"time"
+
+	"github.com/gocql/gocql"
+	"go.uber.org/zap"
+
+	"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/config"
+)
+
+// Repository defines the interface for invite email rate limiting
+type Repository interface {
+	// GetDailyEmailCount returns the number of invitation emails sent by a user today
+	GetDailyEmailCount(ctx context.Context, userID gocql.UUID, date time.Time) (int, error)
+	// IncrementDailyEmailCount increments the counter for emails sent today
+	IncrementDailyEmailCount(ctx context.Context, userID gocql.UUID, date time.Time) error
+}
+
+type repositoryImpl struct {
+	logger  *zap.Logger
+	session *gocql.Session
+}
+
+// NewRepository creates a new invite email rate limit repository
+func NewRepository(appCfg *config.Configuration, session *gocql.Session, logger *zap.Logger) Repository {
+	logger = logger.Named("InviteEmailRateLimitRepository")
+
+	return &repositoryImpl{
+		logger:  logger,
+		session: session,
+	}
+}

cloud/maplefile-backend/internal/repo/inviteemailratelimit/increment.go

@@ -0,0 +1,42 @@
+package inviteemailratelimit
+
+import (
+	"context"
+	"time"
+
+	"github.com/gocql/gocql"
+	"go.uber.org/zap"
+)
+
+// IncrementDailyEmailCount increments the counter for emails sent by a user on the given date.
+// Uses Cassandra COUNTER type for atomic increment operations.
+// TTL of 2 days (172800 seconds) is applied at the UPDATE level since counter tables
+// do not support default_time_to_live in Cassandra.
+func (r *repositoryImpl) IncrementDailyEmailCount(ctx context.Context, userID gocql.UUID, date time.Time) error {
+	r.logger.Debug("Incrementing daily email count",
+		zap.String("user_id", userID.String()),
+		zap.Time("date", date))
+
+	// Normalize date to midnight UTC
+	dateOnly := date.UTC().Truncate(24 * time.Hour)
+
+	// TTL of 172800 seconds = 2 days for automatic cleanup
+	query := r.session.Query(`
+		UPDATE invite_email_rate_limits_by_user_id_and_date
+		USING TTL 172800
+		SET emails_sent_today = emails_sent_today + 1
+		WHERE user_id = ? AND date = ?
+	`, userID, dateOnly).WithContext(ctx)
+
+	if err := query.Exec(); err != nil {
+		r.logger.Error("Failed to increment daily email count",
+			zap.String("user_id", userID.String()),
+			zap.Error(err))
+		return err
+	}
+
+	r.logger.Debug("Successfully incremented daily email count",
+		zap.String("user_id", userID.String()))
+
+	return nil
+}

cloud/maplefile-backend/internal/repo/inviteemailratelimit/provider.go

@@ -0,0 +1,13 @@
+package inviteemailratelimit
+
+import (
+	"github.com/gocql/gocql"
+	"go.uber.org/zap"
+
+	"codeberg.org/mapleopentech/monorepo/cloud/maplefile-backend/config"
+)
+
+// ProvideRepository provides an invite email rate limit repository for Wire DI
+func ProvideRepository(cfg *config.Config, session *gocql.Session, logger *zap.Logger) Repository {
+	return NewRepository(cfg, session, logger)
+}