package usersettingsrepo

import (
	"context"
	"database/sql"
)

type Repo struct {
	db *sql.DB
}

func NewRepo(db *sql.DB) *Repo {
	return &Repo{db: db}
}

func (r *Repo) SetTimezone(ctx context.Context, userID int64, zone string) error {
	const q = `
		INSERT INTO user_settings (user_id, timezone)
		VALUES ($1, $2)
		ON CONFLICT (user_id)
		DO UPDATE SET timezone = EXCLUDED.timezone
	`
	_, err := r.db.ExecContext(ctx, q, userID, zone)
	return err
}

func (r *Repo) GetTimezone(ctx context.Context, userID int64) (string, bool, error) {
	const q = `
		SELECT timezone
		FROM user_settings
		WHERE user_id = $1
	`
	row := r.db.QueryRowContext(ctx, q, userID)
	var zone string
	switch err := row.Scan(&zone); err {
	case nil:
		return zone, true, nil
	case sql.ErrNoRows:
		return "", false, nil
	default:
		return "", false, err
	}
}