Initial commit: Apothecary v0.4.0

server/src/db.ts

@@ -0,0 +1,40 @@
+import Database from "better-sqlite3";
+import { readFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+const DB_PATH = process.env.APOTHECARY_DB ?? join(__dirname, "..", "data.db");
+
+export const db = new Database(DB_PATH);
+db.pragma("journal_mode = WAL");
+db.pragma("foreign_keys = ON");
+
+const schema = readFileSync(join(__dirname, "schema.sql"), "utf8");
+db.exec(schema);
+
+// Add strain_id to products table if missing — older DBs predate the column.
+const productCols = db
+  .prepare(`PRAGMA table_info(products)`)
+  .all() as { name: string }[];
+if (!productCols.some((c) => c.name === "strain_id")) {
+  db.exec(`ALTER TABLE products ADD COLUMN strain_id TEXT REFERENCES strains(id);`);
+  db.exec(`CREATE INDEX IF NOT EXISTS idx_products_strain ON products(strain_id);`);
+}
+
+export function nextId(prefix: string, table: string): string {
+  const row = db
+    .prepare<[string], { id: string }>(
+      `SELECT id FROM ${table} WHERE id LIKE ? ORDER BY id DESC LIMIT 1`,
+    )
+    .get(`${prefix}-%`);
+  const last = row ? Number(row.id.slice(prefix.length + 1)) : 0;
+  const pad = prefix === "prd" || prefix === "str" ? 4 : 2;
+  const n = String(last + 1).padStart(pad, "0");
+  return `${prefix}-${n}`;
+}
+
+export function randomSku(): string {
+  return "SKU-" + Math.random().toString(36).slice(2, 8).toUpperCase();
+}