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add best effort migration for pages

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Johann150 2022-08-01 10:55:12 +02:00
parent 5489ce4053
commit c0b0720ede
Signed by: Johann150
GPG key ID: 9EE6577A2A06F8F1
1 changed files with 81 additions and 0 deletions
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packages/backend/migration/1659335999000-pages-to-plaintext.js Normal file
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export class pagesToPlaintext1659335999000 {
name = 'pagesToPlaintext1659335999000'
async up(queryRunner) {
await queryRunner.query(`ALTER TABLE "page" ADD "text" text`);
async function noteUrl(noteId) {
const note = await queryRunner.query(`SELECT "uri", "userHost" FROM "note" WHERE "id" = $1`, [noteId]);
if (note.uri) return note.uri;
// don't really have access to the configuration here so just guess
else return `https://${note.userHost}/notes/${noteId}`;
}
async function fileUrl(fileId) {
const file = await queryRunner.query(`SELECT "url" from "drive_file" WHERE "id" = $1`, [fileId]);
return file.url;
}
async function convertBlock(block) {
switch (block.type) {
case 'note':
if (block.note) return noteUrl(block.note);
else break;
case 'section':
return block.children.map(convertBlock).join('\n');
case 'text':
return block.text;
case 'textarea':
return '```\n' + block.text + '```';
case 'image':
if (block.fileId) return '![image](' + fileUrl(block.fileId) + ')';
else break;
case 'if': // no idea how to convert these
case 'post': // new note form, why?
case 'canvas': // there is some aiscript api for these but dont think anyone ever used it
// interactive elements can also not be converted
case 'button':
case 'numberInput':
case 'textInput':
case 'switch':
case 'radioButton':
case 'counter':
break;
}
return `(There was a/an ${block.type} here in a previous version but it is no longer supported.)`;
}
await queryRunner.query(`SELECT id, "content" FROM "page"`)
.then(pages => Promise.all(pages.map(page => {
let text = page.content.map(convertBlock).join('\n');
return queryRunner.query(`UPDATE "page" SET "text" = $1 WHERE "id" = $2`, [text, page.id]);
})));
await queryRunner.query(`ALTER TABLE "page" DROP COLUMN "content"`);
await queryRunner.query(`ALTER TABLE "page" DROP COLUMN "variables"`);
await queryRunner.query(`ALTER TABLE "page" DROP COLUMN "script"`);
}
async down(queryRunner) {
await queryRunner.query(`ALTER TABLE "page" ADD "content" jsonb default '[]'::jsonb`);
await queryRunner.query(`ALTER TABLE "page" ADD "variables" jsonb default '[]'::jsonb`);
await queryRunner.query(`ALTER TABLE "page" ADD "script" character varying(16384) default ''`);
// The conversion from the previous page content to text is lossy,
// so we can just convert it back to a big text block.
await queryRunner.query(`SELECT "id", "text" FROM "page"`)
.then(pages => Promise.all(pages.map(page => {
const content = [{
// just a random UUID to keep the data structure
id: '0730b23f-ab5b-4d56-8bd1-f4ead3f72af7',
type: 'text',
text: page.text,
}];
return queryRunner.query(`UPDATE "page" SET "content" = $1 WHERE "id" = $2`, [JSON.stringify(content), page.id]);
})));
await queryRunner.query(`ALTER TABLE "page" DROP COLUMN "text"`);
}
}