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Add database triggers for updating author names in libraryItems (for new databases)

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mikiher 2025-03-07 07:16:00 +02:00
parent edccb7241b
commit b955b86972
1 changed files with 71 additions and 0 deletions
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71
server/Database.js
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@ -782,6 +782,7 @@ class Database {
await this.addTriggerIfNotExists('books', 'titleIgnorePrefix', 'id', 'libraryItems', 'titleIgnorePrefix', 'mediaId')
await this.addTriggerIfNotExists('podcasts', 'title', 'id', 'libraryItems', 'title', 'mediaId')
await this.addTriggerIfNotExists('podcasts', 'titleIgnorePrefix', 'id', 'libraryItems', 'titleIgnorePrefix', 'mediaId')
await this.addAuthorNamesTriggersIfNotExist()
}
async addTriggerIfNotExists(sourceTable, sourceColumn, sourceIdColumn, targetTable, targetColumn, targetIdColumn) {
@ -806,6 +807,76 @@ class Database {
`)
}
async addAuthorNamesTriggersIfNotExist() {
const libraryItems = 'libraryItems'
const bookAuthors = 'bookAuthors'
const authors = 'authors'
const columns = [
{ name: 'authorNamesFirstLast', source: `${authors}.name`, spec: { type: Sequelize.STRING, allowNull: true } },
{ name: 'authorNamesLastFirst', source: `${authors}.lastFirst`, spec: { type: Sequelize.STRING, allowNull: true } }
]
const columnNames = columns.map((column) => column.name).join(', ')
const columnSourcesExpression = columns.map((column) => `GROUP_CONCAT(${column.source}, ', ')`).join(', ')
const authorsJoin = `${authors} JOIN ${bookAuthors} ON ${authors}.id = ${bookAuthors}.authorId`
const authorsSort = `${bookAuthors}.createdAt ASC`
const addBookAuthorsTriggerIfNotExists = async (action) => {
const modifiedRecord = action === 'delete' ? 'OLD' : 'NEW'
const triggerName = this.convertToSnakeCase(`update_${libraryItems}_authorNames_on_${bookAuthors}_${action}`)
const authorNamesSubQuery = `
SELECT ${columnSourcesExpression}
FROM ${authorsJoin}
WHERE ${bookAuthors}.bookId = ${modifiedRecord}.bookId
ORDER BY ${authorsSort}
`
const [[{ count }]] = await this.sequelize.query(`SELECT COUNT(*) as count FROM sqlite_master WHERE type='trigger' AND name='${triggerName}'`)
if (count > 0) return // Trigger already exists
Logger.info(`[Database] Adding trigger ${triggerName}`)
await this.sequelize.query(`
CREATE TRIGGER ${triggerName}
AFTER ${action} ON ${bookAuthors}
FOR EACH ROW
BEGIN
UPDATE ${libraryItems}
SET (${columnNames}) = (${authorNamesSubQuery})
WHERE mediaId = ${modifiedRecord}.bookId;
END;
`)
}
const addAuthorsUpdateTriggerIfNotExists = async () => {
const triggerName = this.convertToSnakeCase(`update_${libraryItems}_authorNames_on_authors_update`)
const authorNamesSubQuery = `
SELECT ${columnSourcesExpression}
FROM ${authorsJoin}
WHERE ${bookAuthors}.bookId = ${libraryItems}.mediaId
ORDER BY ${authorsSort}
`
const [[{ count }]] = await this.sequelize.query(`SELECT COUNT(*) as count FROM sqlite_master WHERE type='trigger' AND name='${triggerName}'`)
if (count > 0) return // Trigger already exists
Logger.info(`[Database] Adding trigger ${triggerName}`)
await this.sequelize.query(`
CREATE TRIGGER ${triggerName}
AFTER UPDATE OF name ON ${authors}
FOR EACH ROW
BEGIN
UPDATE ${libraryItems}
SET (${columnNames}) = (${authorNamesSubQuery})
WHERE mediaId IN (SELECT bookId FROM ${bookAuthors} WHERE authorId = NEW.id);
END;
`)
}
await addBookAuthorsTriggerIfNotExists('insert')
await addBookAuthorsTriggerIfNotExists('delete')
await addAuthorsUpdateTriggerIfNotExists()
}
convertToSnakeCase(str) {
return str.replace(/([A-Z])/g, '_$1').toLowerCase()
}