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100 lines
2.5 KiB
JavaScript
100 lines
2.5 KiB
JavaScript
/*
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* IMPORTANT:
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*
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* DO NOT TRUST THIS SCRIPT YET
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*
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*
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* This has been written by Alys to identify and remove duplicated tasks
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* i.e., tasks that have the same `id` value as another task.
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* However it could almost certainly be improved (the aggregation step HAS
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* to be easier that this!) and Alys is still working on it. Improvements
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* welcome.
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*
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* If you use it, do ALL of the following things:
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*
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* - configuration, as described below
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* - make a full backup of the user's data
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* - be aware of how to restore the user's data from that backup
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* - test the script first on a local copy of the database
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* - dump the user's data to a text file before running the script so that
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* it can later be compared to a dump made afterwards
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* - run the script once first with both of the db.users.update() commands
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* commented-out and check that the printed task IDs are correct
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* - run the script with all code enabled
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* - dump the user's data to a text file after running the script
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* - diff the two dumps to ensure that only the correct tasks were removed
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*
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*
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* When two tasks exist with the same ID, only one of those tasks will be
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* removed (whichever copy the script finds first).
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* If three tasks exist with the same ID, you'll probably need to run this
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* script twice.
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*
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*/
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// CONFIGURATION:
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// - Change the uuid below to be the user's uuid.
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// - Change ALL instances of "todos" to "habits"/"dailys"/"rewards" as
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// needed. Do not miss any of them!
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const uuid = '30fb2640-7121-4968-ace5-f385e60ea6c5';
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db.users.aggregate([
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{
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$match: {
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_id: uuid,
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},
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},
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{
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$project: {
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_id: 0, todos: 1,
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},
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},
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{ $unwind: '$todos' },
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{
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$group: {
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_id: { taskid: '$todos.id' },
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count: { $sum: 1 },
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},
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},
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{
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$match: {
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count: { $gt: 1 },
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},
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},
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{
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$project: {
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'_id.taskid': 1,
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},
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},
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{
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$group: {
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_id: { taskid: '$todos.id' },
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troublesomeIds: { $addToSet: '$_id.taskid' },
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},
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},
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{
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$project: {
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_id: 0,
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troublesomeIds: 1,
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},
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},
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]).forEach(data => {
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// print( "\n" ); printjson(data);
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data.troublesomeIds.forEach(taskid => {
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print(`non-unique task: ${taskid}`); // eslint-disable-line no-restricted-globals
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db.users.update({
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_id: uuid,
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todos: { $elemMatch: { id: taskid } },
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}, {
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$set: { 'todos.$.id': 'de666' },
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});
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});
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});
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db.users.update(
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{ _id: uuid },
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{ $pull: { todos: { id: 'de666' } } },
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{ multi: false },
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);
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