halkyon/apps/learn/halkyon_learn_server/migrations/20261021184601197-private-studysets/migration.json
Tizian 「ティツィアーン」 a1c5ac3f86
feat(privacy): the instance's side of private studysets (ADR 0019)
- `content_key`, a synced table in the person's space, keeps their data keys
  sealed to their account (a private studyset's, their personal one);
  `learning_path_answer` gains `keyId` and `nonce` for answers in private
  studysets. Additive only, on the server and the device.
- Publishing refuses a private studyset, and a tree holding a private row
  (`PublishRefusal.private`); a private studyset elsewhere no longer breaks
  publishing a readable one. Encrypted tags are named as the device names
  them (`tagNames`): a name for a tag that isn't the person's, or an
  encrypted tag of the release without one, refuses it
  (`tagNamesMismatch`); a readable tag keeps its own name.
- The connector leaves private studysets out and says how many there are.
- The learner count reads no payload any more: Count me is kept by the
  instance (`counted_learner`) and the device reports which publications
  its copies come from (`learning_copy`, accepted only while counted, each
  report replacing the last); only the reporter's own studysets count.
  Deleting a person deletes both.
- An upload says whether its file is encrypted: only a readable one over
  20 MB is checked to be a PDF, and an encrypted one may be 4 KiB larger.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>
2026-10-23 14:13:08 +02:00

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{
"__className__": "serverpod.DatabaseMigration",
"actions": [
{
"__className__": "serverpod.DatabaseMigrationAction",
"type": "createTable",
"createTable": {
"__className__": "serverpod.TableDefinition",
"name": "content_key",
"dartName": "ContentKey",
"module": "halkyon_learn",
"schema": "public",
"columns": [
{
"__className__": "serverpod.ColumnDefinition",
"name": "id",
"fieldName": "id",
"columnType": 7,
"isNullable": false,
"columnDefault": "random_v7",
"dartType": "UuidValue?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "spaceId",
"fieldName": "spaceId",
"columnType": 6,
"isNullable": true,
"dartType": "int?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "dataKeyId",
"fieldName": "dataKeyId",
"columnType": 0,
"isNullable": false,
"dartType": "String"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "kind",
"fieldName": "kind",
"columnType": 0,
"isNullable": false,
"dartType": "String"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "studysetId",
"fieldName": "studysetId",
"columnType": 7,
"isNullable": true,
"dartType": "UuidValue?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "sealedKey",
"fieldName": "sealedKey",
"columnType": 5,
"isNullable": false,
"dartType": "dart:typed_data:ByteData"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "createdAt",
"fieldName": "createdAt",
"columnType": 4,
"isNullable": false,
"dartType": "DateTime"
}
],
"foreignKeys": [
{
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"constraintName": "content_key_fk_0",
"columns": [
"spaceId"
],
"referenceTable": "offline_sync_spaces",
"referenceTableSchema": "public",
"referenceColumns": [
"id"
],
"onUpdate": 3,
"onDelete": 4
}
],
"indexes": [
{
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"indexName": "content_key_space_idx",
"elements": [
{
"__className__": "serverpod.IndexElementDefinition",
"type": 0,
"definition": "spaceId"
}
],
"type": "btree",
"isUnique": false,
"isPrimary": false
}
],
"managed": true
}
},
{
"__className__": "serverpod.DatabaseMigrationAction",
"type": "createTable",
"createTable": {
"__className__": "serverpod.TableDefinition",
"name": "counted_learner",
"dartName": "CountedLearner",
"module": "halkyon_learn",
"schema": "public",
"columns": [
{
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"fieldName": "id",
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"isNullable": false,
"columnDefault": "serial",
"dartType": "int?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "authUserId",
"fieldName": "authUserId",
"columnType": 7,
"isNullable": false,
"dartType": "UuidValue"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "since",
"fieldName": "since",
"columnType": 4,
"isNullable": false,
"dartType": "DateTime"
}
],
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"indexes": [
{
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"indexName": "counted_learner_person_idx",
"elements": [
{
"__className__": "serverpod.IndexElementDefinition",
"type": 0,
"definition": "authUserId"
}
],
"type": "btree",
"isUnique": true,
"isPrimary": false
}
],
"managed": true
}
},
{
"__className__": "serverpod.DatabaseMigrationAction",
"type": "createTable",
"createTable": {
"__className__": "serverpod.TableDefinition",
"name": "learning_copy",
"dartName": "LearningCopy",
"module": "halkyon_learn",
"schema": "public",
"columns": [
{
"__className__": "serverpod.ColumnDefinition",
"name": "id",
"fieldName": "id",
"columnType": 6,
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"columnDefault": "serial",
"dartType": "int?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "authUserId",
"fieldName": "authUserId",
"columnType": 7,
"isNullable": false,
"dartType": "UuidValue"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "publicationId",
"fieldName": "publicationId",
"columnType": 0,
"isNullable": false,
"dartType": "String"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "studysetId",
"fieldName": "studysetId",
"columnType": 7,
"isNullable": false,
"dartType": "UuidValue"
}
],
"foreignKeys": [],
"indexes": [
{
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"indexName": "learning_copy_person_idx",
"elements": [
{
"__className__": "serverpod.IndexElementDefinition",
"type": 0,
"definition": "authUserId"
}
],
"type": "btree",
"isUnique": false,
"isPrimary": false
}
],
"managed": true
}
},
{
"__className__": "serverpod.DatabaseMigrationAction",
"type": "alterTable",
"alterTable": {
"__className__": "serverpod.TableMigration",
"name": "learning_path_answer",
"schema": "public",
"addColumns": [
{
"__className__": "serverpod.ColumnDefinition",
"name": "keyId",
"fieldName": "keyId",
"columnType": 0,
"isNullable": true,
"dartType": "String?"
},
{
"__className__": "serverpod.ColumnDefinition",
"name": "nonce",
"fieldName": "nonce",
"columnType": 5,
"isNullable": true,
"dartType": "dart:typed_data:ByteData?"
}
],
"deleteColumns": [],
"modifyColumns": [],
"addIndexes": [],
"deleteIndexes": [],
"addForeignKeys": [],
"deleteForeignKeys": [],
"warnings": []
}
}
],
"warnings": [],
"migrationApiVersion": 1
}