130 lines
3.5 KiB
Go
130 lines
3.5 KiB
Go
package server
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import (
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"database/sql"
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_ "github.com/mattn/go-sqlite3" // SQLite driver
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)
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const (
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createWebPushSubscriptionsTableQuery = `
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BEGIN;
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CREATE TABLE IF NOT EXISTS subscriptions (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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topic TEXT NOT NULL,
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username TEXT,
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endpoint TEXT NOT NULL,
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key_auth TEXT NOT NULL,
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key_p256dh TEXT NOT NULL,
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updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
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);
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CREATE INDEX IF NOT EXISTS idx_topic ON subscriptions (topic);
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CREATE INDEX IF NOT EXISTS idx_endpoint ON subscriptions (endpoint);
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CREATE UNIQUE INDEX IF NOT EXISTS idx_topic_endpoint ON subscriptions (topic, endpoint);
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COMMIT;
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`
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insertWebPushSubscriptionQuery = `
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INSERT OR REPLACE INTO subscriptions (topic, username, endpoint, key_auth, key_p256dh)
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VALUES (?, ?, ?, ?, ?)
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`
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deleteWebPushSubscriptionByEndpointQuery = `DELETE FROM subscriptions WHERE endpoint = ?`
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deleteWebPushSubscriptionByUsernameQuery = `DELETE FROM subscriptions WHERE username = ?`
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deleteWebPushSubscriptionByTopicAndEndpointQuery = `DELETE FROM subscriptions WHERE topic = ? AND endpoint = ?`
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selectWebPushSubscriptionsForTopicQuery = `SELECT endpoint, key_auth, key_p256dh, username FROM subscriptions WHERE topic = ?`
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selectWebPushSubscriptionsCountQuery = `SELECT COUNT(*) FROM subscriptions`
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)
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type webPushStore struct {
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db *sql.DB
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}
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func newWebPushStore(filename string) (*webPushStore, error) {
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db, err := sql.Open("sqlite3", filename)
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if err != nil {
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return nil, err
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}
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if err := setupSubscriptionsDB(db); err != nil {
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return nil, err
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}
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return &webPushStore{
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db: db,
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}, nil
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}
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func setupSubscriptionsDB(db *sql.DB) error {
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// If 'subscriptions' table does not exist, this must be a new database
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rowsMC, err := db.Query(selectWebPushSubscriptionsCountQuery)
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if err != nil {
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return setupNewSubscriptionsDB(db)
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}
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return rowsMC.Close()
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}
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func setupNewSubscriptionsDB(db *sql.DB) error {
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if _, err := db.Exec(createWebPushSubscriptionsTableQuery); err != nil {
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return err
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}
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return nil
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}
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func (c *webPushStore) AddSubscription(topic string, username string, subscription webPushSubscribePayload) error {
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_, err := c.db.Exec(
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insertWebPushSubscriptionQuery,
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topic,
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username,
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subscription.BrowserSubscription.Endpoint,
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subscription.BrowserSubscription.Keys.Auth,
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subscription.BrowserSubscription.Keys.P256dh,
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)
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return err
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}
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func (c *webPushStore) RemoveSubscription(topic string, endpoint string) error {
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_, err := c.db.Exec(
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deleteWebPushSubscriptionByTopicAndEndpointQuery,
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topic,
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endpoint,
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)
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return err
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}
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func (c *webPushStore) GetSubscriptionsForTopic(topic string) (subscriptions []webPushSubscription, err error) {
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rows, err := c.db.Query(selectWebPushSubscriptionsForTopicQuery, topic)
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if err != nil {
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return nil, err
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}
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defer rows.Close()
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var data []webPushSubscription
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for rows.Next() {
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i := webPushSubscription{}
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err = rows.Scan(&i.BrowserSubscription.Endpoint, &i.BrowserSubscription.Keys.Auth, &i.BrowserSubscription.Keys.P256dh, &i.Username)
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if err != nil {
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return nil, err
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}
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data = append(data, i)
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}
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return data, nil
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}
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func (c *webPushStore) ExpireWebPushEndpoint(endpoint string) error {
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_, err := c.db.Exec(
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deleteWebPushSubscriptionByEndpointQuery,
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endpoint,
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)
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return err
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}
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func (c *webPushStore) ExpireWebPushForUser(username string) error {
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_, err := c.db.Exec(
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deleteWebPushSubscriptionByUsernameQuery,
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username,
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)
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return err
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}
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func (c *webPushStore) Close() error {
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return c.db.Close()
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}
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