85 lines
1.8 KiB
Go
85 lines
1.8 KiB
Go
package database
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import (
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"database/sql"
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"fmt"
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_ "modernc.org/sqlite"
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)
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var db *sql.DB
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// InitDB opens the sqlite file at path and ensures the schema exists.
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// Call this once at startup before AddBookmark/RetrieveBookmarks are used.
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func InitDB(path string) error {
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var err error
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db, err = sql.Open("sqlite", path)
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if err != nil {
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return fmt.Errorf("open db: %w", err)
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}
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if err := db.Ping(); err != nil {
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return fmt.Errorf("ping db: %w", err)
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}
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schema := `
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CREATE TABLE IF NOT EXISTS bookmarks (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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title TEXT NOT NULL,
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url TEXT NOT NULL,
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category TEXT NOT NULL
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);`
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if _, err := db.Exec(schema); err != nil {
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return fmt.Errorf("create schema: %w", err)
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}
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return nil
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}
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type Bookmark struct {
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ID uint64
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Title string
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URL string
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Category string // kebab-case, e.g. "market-data-and-filling-dbs"
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}
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func AddBookmark(b Bookmark) (id uint64, err error) {
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res, err := db.Exec(
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`INSERT INTO bookmarks (title, url, category) VALUES (?, ?, ?)`,
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b.Title, b.URL, b.Category,
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)
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if err != nil {
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return 0, fmt.Errorf("insert bookmark: %w", err)
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}
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lastID, err := res.LastInsertId()
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if err != nil {
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return 0, fmt.Errorf("get inserted id: %w", err)
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}
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return uint64(lastID), nil
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}
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func RetrieveBookmarks() (marks []Bookmark, err error) {
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rows, err := db.Query(`SELECT id, title, url, category FROM bookmarks ORDER BY id DESC`)
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if err != nil {
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return nil, fmt.Errorf("query bookmarks: %w", err)
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}
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defer rows.Close()
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for rows.Next() {
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var b Bookmark
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if err := rows.Scan(&b.ID, &b.Title, &b.URL, &b.Category); err != nil {
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return nil, fmt.Errorf("scan bookmark: %w", err)
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}
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marks = append(marks, b)
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}
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if err := rows.Err(); err != nil {
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return nil, fmt.Errorf("rows error: %w", err)
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}
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return marks, nil
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}
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