119 lines
2.4 KiB
Go
119 lines
2.4 KiB
Go
package main
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import (
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"database/sql"
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"errors"
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"fmt"
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_ "github.com/lib/pq"
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"os"
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)
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func db_open() (*sql.DB, error) {
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// get connection string from environment variables
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conn := fmt.Sprintf("host=%s port=%s user=%s password=%s dbname=%s sslmode=disable",
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os.Getenv("DB_HOST"),
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os.Getenv("DB_PORT"),
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os.Getenv("DB_USER"),
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os.Getenv("DB_PASSWORD"),
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os.Getenv("DB_NAME"))
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db, err := sql.Open("postgres", conn)
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if err != nil {
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return db, err
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}
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return db, nil
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}
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func db_get_setting(setting_name string) string {
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setting_value := ""
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db, err := db_open()
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if err != nil {
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return ""
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}
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defer db.Close()
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sqlStatement := `select value from settings where name=$1;`
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row := db.QueryRow(sqlStatement, setting_name)
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err = row.Scan(&setting_value)
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if err != nil {
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return ""
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}
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return setting_value
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}
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func db_get_card_name_count(card_name string) (card_count int, err error) {
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card_count = 0
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db, err := db_open()
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if err != nil {
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return 0, err
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}
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defer db.Close()
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sqlStatement := `SELECT COUNT(card_id) FROM cards WHERE card_name = $1;`
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row := db.QueryRow(sqlStatement, card_name)
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err = row.Scan(&card_count)
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if err != nil {
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return 0, err
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}
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return card_count, nil
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}
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func db_insert_card(one_time_code string, k0_auth_key string, k2_cmac_key string, k3 string, k4 string,
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tx_max_sats int, day_max_sats int, lnurlw_enable bool, card_name string, uid_privacy bool,
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allow_neg_bal_ptr bool) error {
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lnurlw_enable_yn := "N"
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if lnurlw_enable {
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lnurlw_enable_yn = "Y"
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}
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uid_privacy_yn := "N"
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if uid_privacy {
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uid_privacy_yn = "Y"
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}
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allow_neg_bal_yn := "N"
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if allow_neg_bal_ptr {
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allow_neg_bal_yn = "Y"
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}
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db, err := db_open()
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if err != nil {
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return err
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}
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defer db.Close()
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// insert a new record into cards
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sqlStatement := `INSERT INTO cards` +
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` (one_time_code, k0_auth_key, k2_cmac_key, k3, k4, uid, last_counter_value,` +
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` lnurlw_request_timeout_sec, tx_limit_sats, day_limit_sats, lnurlw_enable,` +
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` one_time_code_used, card_name, uid_privacy, allow_negative_balance)` +
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` VALUES ($1, $2, $3, $4, $5, '', 0, 60, $6, $7, $8, 'N', $9, $10, $11);`
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res, err := db.Exec(sqlStatement, one_time_code, k0_auth_key, k2_cmac_key, k3, k4,
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tx_max_sats, day_max_sats, lnurlw_enable_yn, card_name, uid_privacy_yn,
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allow_neg_bal_yn)
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if err != nil {
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return err
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}
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count, err := res.RowsAffected()
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if err != nil {
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return err
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}
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if count != 1 {
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return errors.New("not one card record inserted")
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}
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return nil
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}
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