ls-deno/db-migrations.ts

import { query } from "./db.ts";

const id = "id uuid primary key default uuid_generate_v4()";

const timestamps = [
  "created_at timestamptz not null default now()",
  "updated_at timestamptz not null default now()",
];

const tables = {
  "note": {
    columns: [id, "content text not null", ...timestamps],
  },
  "user": {
    columns: [
      id,
      "username text not null unique",
      "hashed_password text not null",
      ...timestamps,
    ],
    constraints: [],
  },
};

const tableStatements = Object.entries(tables).map(([name, meta]) => `
  drop table if exists "${name}";
  create table "${name}" (
    ${meta.columns.join(",\n    ")}
  );
`);

console.log(tableStatements);

const queryString = `
  create extension if not exists "uuid-ossp";
  ${tableStatements.map((s) => s.trim()).join("\n\n  ")}
`;
console.log(queryString);
await query(queryString);