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
}