parent
12f1283e4e
commit
534ffeaf8e
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const sqlite = require("better-sqlite3"); |
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const db = new sqlite('the_big_db.db', { verbose: console.log }); |
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const fs = require('node:fs'); |
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const dump = { |
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pages: db.prepare('select * from pages').all(), |
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users: db.prepare('select * from users').all() |
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}; |
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fs.writeFile(`dump_${new Date().toISOString()}.json`, JSON.stringify(dump), (err) => console.log(err) ); |
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@ -0,0 +1,187 @@ |
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// wipe and load the database from a dump file created by dump_blahblah.js
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const hljs = require('highlight.js/lib/core'); |
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hljs.registerLanguage('lua', require('highlight.js/lib/languages/lua')); |
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const fs = require('node:fs'); |
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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 dump_file_name = process.argv[2] |
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//get argument out of 'node db_scripts/initialize_db-blah-blah.js dumpfile'
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let data = "{}"; |
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try { |
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data = fs.readFileSync(dump_file_name, 'utf8'); |
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} catch (error) { |
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console.log(error); |
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return; |
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} |
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//open that file as text (unicode i guess?)
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console.log("opened file"); |
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const filejson = JSON.parse(data); |
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//parse it as json
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const pages = filejson["pages"]; |
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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, |
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title varchar(255), |
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description text, |
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html text, |
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lua text, |
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time timestamp default current_timestamp, |
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author integer, |
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type 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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function migratePages(pages) { |
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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 dump pages'); |
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const insertPage = db.prepare(`insert into pages
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(id, number, title, description, html, lua, time, author, type)
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values (:id, :number, :title, :description, :html, :lua, :time, :author, :type)`);
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pages.forEach((pageData) => { |
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let {id, number, description} = pageData; |
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console.log(`rendering page number ${number}.${id}`) |
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description = description.replace(/<br>/g, "\n"); |
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const renderedPage = converter.makeHtml(description); |
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const highlightedLua = hljs.highlight(description, {language: 'lua'}).value; |
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args = { ...pageData, description: description, html: renderedPage, lua: highlightedLua, type: "noun"}; |
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console.log("inserting args", args); |
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insertPage.run(args); |
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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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//throw new Error("blahhh i'm a dracula");
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} |
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try { |
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db.transaction(migratePages)(filejson["pages"]); |
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} catch (error) { |
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console.log(error); |
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} |
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const createAttributesQuery = db.prepare(` |
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create table if not exists attributes ( |
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number integer unique, |
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contents json |
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) |
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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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function createAttributes() { |
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console.log("creating new attribute table") |
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console.log(createAttributesQuery.run()); |
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console.log('iterating over all pages'); |
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const insertAttribute = db.prepare(`insert into attributes
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(number, contents) values (:number, :contents)`);
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db.prepare(`select * from pages`).all().forEach((pageData) => { |
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let { number } = pageData; |
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let args = {contents: JSON.stringify({}), number: number}; |
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console.log("inserting args", args); |
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insertAttribute.run(args); |
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}); |
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//throw new Error("blahhh i'm a dracula");
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} |
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try { |
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db.transaction(createAttributes)(); |
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} catch (error) { |
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console.log(error); |
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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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character integer |
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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 migrateUsers(users) { |
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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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users.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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//throw new Error("i'm dracula 2");
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} |
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try { |
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db.transaction(migrateUsers)(filejson["users"]); |
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} catch (error) { |
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console.log(error); |
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} |
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