const sql = require('./sql'); const utils = require('./utils'); const options = require('./options'); const log = require('./log'); function getHash(rows) { let hash = ''; for (const row of rows) { hash = utils.hash(hash + JSON.stringify(row)); } return hash; } async function getHashes() { const startTime = new Date(); const hashes = { notes: getHash(await sql.getAll(` SELECT note_id, note_title, note_text, type, date_modified, is_protected, is_deleted FROM notes ORDER BY note_id`)), notes_tree: getHash(await sql.getAll(` SELECT note_tree_id, note_id, parent_note_id, note_position, date_modified, is_deleted, prefix FROM notes_tree ORDER BY note_tree_id`)), notes_history: getHash(await sql.getAll(` SELECT note_history_id, note_id, note_title, note_text, date_modified_from, date_modified_to FROM notes_history ORDER BY note_history_id`)), recent_notes: getHash(await sql.getAll(` SELECT note_tree_id, note_path, date_accessed, is_deleted FROM recent_notes ORDER BY note_path`)), options: getHash(await sql.getAll(` SELECT opt_name, opt_value FROM options WHERE is_synced = 1 ORDER BY opt_name`)), // we don't include image data on purpose because they are quite large, checksum is good enough // to represent the data anyway images: getHash(await sql.getAll(` SELECT image_id, format, checksum, name, is_deleted, date_modified, date_created FROM images ORDER BY image_id`)), attributes: getHash(await sql.getAll(` SELECT attribute_id, note_id name, value date_modified, date_created FROM attributes ORDER BY attribute_id`)) }; const elapseTimeMs = new Date().getTime() - startTime.getTime(); log.info(`Content hash computation took ${elapseTimeMs}ms`); return hashes; } module.exports = { getHashes };