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113 lines
3.5 KiB
113 lines
3.5 KiB
// this is a horrible script i use and edit for db revisions and migrations. i hate it.
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// i should have a db migration plan but this is not, and probably never will be, big
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// enough of a project to really warrant it.
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const sqlite = require("better-sqlite3");
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const showdown = require("showdown");
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const db = new sqlite('the_big_db.db', { verbose: console.log });
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const converter = new showdown.Converter();
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const createPages = db.prepare(`
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create table if not exists pages (
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id integer primary key,
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number integer autoincrement,
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title varchar(255),
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description text,
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html text,
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time timestamp default current_timestamp,
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author integer
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)
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`);
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/* an object has:
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id = primary key
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number = object identifier number
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title / NAME = a short display name for an object, or the title of a page
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description / TEXT? = the markdown description of an object, or the lua script of the source code of a verb
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html / HTML_MARKDOWN? = the markdown for that object, rendered into html for display as a page
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HTML_LUA? = the lua source code of the object, rendered into html with syntax highlighting?
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time = when this edit was saved
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author = the user id of whoever authored this revision
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TYPE = whether this represents an object or a verb
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*/
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/* an attribute store has:
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number = the object number it's attached to
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contents = a `text` object holding a json store of attributes defined on object #number, containing:
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LOCATION? = the object which contains this object? should this be in the DB or in the json store?
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PROTOTYPE = the number of the prototype for this object, to which we should look for attributes not found here
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ATTRIBUTES? = json object of attached, script-controlled attributes.
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CONTENTS = json array of objectss contained inside this one
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VERBS = json array of objecsts which are verbs on this one
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*/
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const createUsers = db.prepare(`
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create table if not exists users (
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id integer primary key,
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name varchar(64) unique,
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password varchar(128)
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)
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`);
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/* a user has:
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id = primary key
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name = name string
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password = argon2 hash of their password
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character = object in the game world representing your character
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*/
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function migratePages() {
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console.log("moving old table to a temporary");
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console.log(db.prepare(`alter table pages rename to old_pages`).run())
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console.log("creating new page table")
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console.log(createPages.run());
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console.log('iterating over old pages');
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rows = db.prepare(`select * from old_pages`).all();
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const insertPage = db.prepare(`insert into pages (number, title, description, html) values (:id, :title, :description, :html)`);
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rows.forEach((pageData) => {
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const {id, title, description, html} = pageData;
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console.log(`rendering page number ${id}`)
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const renderedPage = converter.makeHtml(description);
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insertPage.run({...pageData, html: renderedPage});
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});
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console.log("getting rid of old table");
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console.log(db.prepare("drop table old_pages").run());
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}
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db.transaction(migratePages)();
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function migrateUsers() {
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console.log("moving old users");
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console.log(db.prepare("alter table users rename to old_users").run());
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console.log("creating new users table");
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console.log(createUsers.run());
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const insertUser = db.prepare("insert into users (name, password) values (:name, :password)")
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db.prepare("select * from old_users").all().forEach((user) => {
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console.log(insertUser.run(user));
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});
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console.log("clearing old table");
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console.log(db.prepare("drop table old_users").run());
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}
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db.transaction(migrateUsers)(); |