58 lines
1.6 KiB
TypeScript
58 lines
1.6 KiB
TypeScript
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/**
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* notes.ts
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*
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* A command line tool to manage a set
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* of simple notes.
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*
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* This is an example, meant to illustrate using
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* the API provided by deno-sqlite.
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*/
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import { DB } from "../mod.ts";
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const commands: Record<string, (...args: string[]) => Promise<void> | void> = {
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"create": (file: string) => {
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const db = new DB(file, { mode: "create" });
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db.query(`
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CREATE TABLE notes (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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note TEXT NOT NULL,
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created_at TEXT NOT NULL
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)
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`);
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db.close();
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console.log("Database created!");
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},
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"record": (file: string, note: string) => {
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const db = new DB(file, { mode: "write" });
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db.query("INSERT INTO notes (note, created_at) VALUES (?, ?)", [
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note,
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new Date(),
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]);
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db.close();
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console.log("Note recorded!");
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},
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"delete": (file: string, noteId: string) => {
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const db = new DB(file, { mode: "write" });
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db.query("DELETE FROM notes WHERE id = ?", [noteId]);
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db.close();
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console.log("Note deleted!");
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},
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"list": (file: string) => {
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const db = new DB(file, { mode: "read" });
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const query = db.prepareQuery<[number, string, string]>(
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"SELECT id, note, created_at FROM notes ORDER BY created_at DESC",
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);
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for (const [id, note, createdAt] of query.iter()) {
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const date = new Date(createdAt);
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console.log(`Note #${id} (recorded ${date.toLocaleString()})\n${note}\n`);
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}
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query.finalize();
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db.close();
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},
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};
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const command = commands[Deno.args[0]] ??
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(() => console.error(`Unknown command '${Deno.args[0]}'.`));
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await command(...Deno.args.slice(1));
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