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File.js
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File.js
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const mongoose = require('mongoose');
const fileSchema = require('./schema/fileSchema');
const File = mongoose.model('File', fileSchema);
/**
* Finds a file by its file_id with additional query options.
* @param {string} file_id - The unique identifier of the file.
* @param {object} options - Query options for filtering, projection, etc.
* @returns {Promise<MongoFile>} A promise that resolves to the file document or null.
*/
const findFileById = async (file_id, options = {}) => {
return await File.findOne({ file_id, ...options }).lean();
};
/**
* Retrieves files matching a given filter, sorted by the most recently updated.
* @param {Object} filter - The filter criteria to apply.
* @param {Object} [_sortOptions] - Optional sort parameters.
* @returns {Promise<Array<MongoFile>>} A promise that resolves to an array of file documents.
*/
const getFiles = async (filter, _sortOptions) => {
const sortOptions = { updatedAt: -1, ..._sortOptions };
return await File.find(filter).sort(sortOptions).lean();
};
/**
* Creates a new file with a TTL of 1 hour.
* @param {MongoFile} data - The file data to be created, must contain file_id.
* @param {boolean} disableTTL - Whether to disable the TTL.
* @returns {Promise<MongoFile>} A promise that resolves to the created file document.
*/
const createFile = async (data, disableTTL) => {
const fileData = {
...data,
expiresAt: new Date(Date.now() + 3600 * 1000),
};
if (disableTTL) {
delete fileData.expiresAt;
}
return await File.findOneAndUpdate({ file_id: data.file_id }, fileData, {
new: true,
upsert: true,
}).lean();
};
/**
* Updates a file identified by file_id with new data and removes the TTL.
* @param {MongoFile} data - The data to update, must contain file_id.
* @returns {Promise<MongoFile>} A promise that resolves to the updated file document.
*/
const updateFile = async (data) => {
const { file_id, ...update } = data;
const updateOperation = {
$set: update,
$unset: { expiresAt: '' }, // Remove the expiresAt field to prevent TTL
};
return await File.findOneAndUpdate({ file_id }, updateOperation, { new: true }).lean();
};
/**
* Increments the usage of a file identified by file_id.
* @param {MongoFile} data - The data to update, must contain file_id and the increment value for usage.
* @returns {Promise<MongoFile>} A promise that resolves to the updated file document.
*/
const updateFileUsage = async (data) => {
const { file_id, inc = 1 } = data;
const updateOperation = {
$inc: { usage: inc },
$unset: { expiresAt: '', temp_file_id: '' },
};
return await File.findOneAndUpdate({ file_id }, updateOperation, { new: true }).lean();
};
/**
* Deletes a file identified by file_id.
* @param {string} file_id - The unique identifier of the file to delete.
* @returns {Promise<MongoFile>} A promise that resolves to the deleted file document or null.
*/
const deleteFile = async (file_id) => {
return await File.findOneAndDelete({ file_id }).lean();
};
/**
* Deletes a file identified by a filter.
* @param {object} filter - The filter criteria to apply.
* @returns {Promise<MongoFile>} A promise that resolves to the deleted file document or null.
*/
const deleteFileByFilter = async (filter) => {
return await File.findOneAndDelete(filter).lean();
};
/**
* Deletes multiple files identified by an array of file_ids.
* @param {Array<string>} file_ids - The unique identifiers of the files to delete.
* @returns {Promise<Object>} A promise that resolves to the result of the deletion operation.
*/
const deleteFiles = async (file_ids) => {
return await File.deleteMany({ file_id: { $in: file_ids } });
};
module.exports = {
File,
findFileById,
getFiles,
createFile,
updateFile,
updateFileUsage,
deleteFile,
deleteFiles,
deleteFileByFilter,
};