Use url as the unique id for a site, rather than an id

sites/sites.go

@@ -6,10 +6,9 @@ import (
 )
 
 const createSitesTable = `CREATE TABLE IF NOT EXISTS sites (
-id INTEGER NOT NULL PRIMARY KEY,
+url TEXT NOT NULL PRIMARY KEY,
 created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-name TEXT NOT NULL,
-url TEXT NOT NULL
+name TEXT NOT NULL
 );`
 
 func CreateTable(db *sql.DB) {
@@ -19,23 +18,17 @@ func CreateTable(db *sql.DB) {
 }
 
 type Site struct {
-	id         uint64
 	created_at uint64
 	Name       string
 	Url        string
 }
 
-func (s *Site) Save(db *sql.DB) {
-	if s.id != 0 {
-		query := `UPDATE SITES
+const upsertQuery = `INSERT INTO sites (url, name) VALUES (?, ?)
+ON CONFLICT (url) DO UPDATE
 SET
-			name=?,
-			url=?
-		WHERE id =? 
+	name = excluded.name
 `
-		db.Exec(query, s.Name, s.Url, s.id)
-	} else {
-		query := `INSERT INTO SITES (name, url) VALUES (?, ?)`
-		db.Exec(query, s.Name, s.Url)
-	}
+
+func (s *Site) Save(db *sql.DB) {
+	db.Exec(upsertQuery, s.Url, s.Name)
 }