package data

import (
	"context"
	"database/sql"
	"time"
)

type AlertRecord struct {
	AlertType string
	StationID string
	Level     string
	IssuedAt  time.Time
	Message   string
	SMSPhone  sql.NullString
}

// InsertAlert writes one alert row; returns inserted id or 0 when skipped by conflict.
func InsertAlert(ctx context.Context, ar AlertRecord) (int64, error) {
	const q = `
INSERT INTO alerts (alert_type, station_id, level, issued_at, message, sms_phone)
VALUES ($1,$2,$3,$4,$5,$6)
ON CONFLICT DO NOTHING
RETURNING id`
	var id int64
	err := DB().QueryRowContext(ctx, q,
		ar.AlertType,
		ar.StationID,
		ar.Level,
		ar.IssuedAt,
		ar.Message,
		ar.SMSPhone,
	).Scan(&id)
	if err == sql.ErrNoRows {
		return 0, nil
	}
	if err != nil {
		return 0, err
	}
	return id, nil
}