File size: 31,429 Bytes
7c6ffa6 d5ee82b 7c6ffa6 d5ee82b 7c6ffa6 d5ee82b 7c6ffa6 d5ee82b 7c6ffa6 d5ee82b 7c6ffa6 d5ee82b 7c6ffa6 3bcdb36 7c6ffa6 3bcdb36 7c6ffa6 d5ee82b 7c6ffa6 3bcdb36 7c6ffa6 3bcdb36 7c6ffa6 3bcdb36 7c6ffa6 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 | """Normalized, ownership-scoped student learning state.
These tables are the durable truth behind planning, teaching, assessment, and
progress. The versioned student workspace remains a fast UI aggregate/cache;
it must not be the only place a learning event exists.
"""
from __future__ import annotations
from datetime import date, datetime
from typing import Any
from sqlalchemy import (
Boolean,
Date,
DateTime,
Float,
ForeignKey,
Index,
Integer,
JSON,
String,
Text,
UniqueConstraint,
func,
text,
)
from sqlalchemy.orm import Mapped, mapped_column
from app.core.database import Base
from app.utils.ids import prefixed_id
class StudentProfileState(Base):
__tablename__ = "student_profiles"
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("stp"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), unique=True, index=True, nullable=False)
class_level: Mapped[str] = mapped_column(String(80), nullable=False)
board: Mapped[str] = mapped_column(String(120), nullable=False)
# Optional: a student who does not yet know their exam date can still onboard.
exam_date: Mapped[date | None] = mapped_column(Date, nullable=True)
goal: Mapped[str] = mapped_column(String(80), nullable=False)
daily_minutes: Mapped[int] = mapped_column(Integer, nullable=False)
preferred_time: Mapped[str | None] = mapped_column(String(40), nullable=True)
available_study_days: Mapped[int] = mapped_column(Integer, nullable=False)
current_subject_id: Mapped[str | None] = mapped_column(String(40), nullable=True)
current_chapter_id: Mapped[str | None] = mapped_column(String(40), nullable=True)
current_mission_id: Mapped[str | None] = mapped_column(String(120), nullable=True)
onboarding_completed: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
preferences: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
class Subject(Base):
__tablename__ = "subjects"
__table_args__ = (
UniqueConstraint("user_id", "name", "board", "class_level", name="uq_subjects_user_context"),
Index("ix_subjects_user_priority", "user_id", "priority"),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("sub"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
name: Mapped[str] = mapped_column(String(120), nullable=False)
board: Mapped[str] = mapped_column(String(120), nullable=False)
class_level: Mapped[str] = mapped_column(String(80), nullable=False)
priority: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
status: Mapped[str] = mapped_column(String(32), default="active", nullable=False)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
class Chapter(Base):
__tablename__ = "chapters"
__table_args__ = (
UniqueConstraint("user_id", "subject_id", "catalog_id", name="uq_chapters_user_subject_catalog"),
Index("ix_chapters_user_subject_order", "user_id", "subject_id", "order_index"),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("chp"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
subject_id: Mapped[str] = mapped_column(String(40), ForeignKey("subjects.id", ondelete="CASCADE"), index=True, nullable=False)
catalog_id: Mapped[str] = mapped_column(String(120), nullable=False)
title: Mapped[str] = mapped_column(String(180), nullable=False)
order_index: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
importance: Mapped[float] = mapped_column(Float, default=1.0, nullable=False)
estimated_minutes: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
status: Mapped[str] = mapped_column(String(32), default="available", nullable=False)
curated: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
class StudyPlan(Base):
__tablename__ = "study_plans"
__table_args__ = (Index("ix_study_plans_user_status_start", "user_id", "status", "start_date"),)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("spl"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
name: Mapped[str] = mapped_column(String(180), nullable=False)
status: Mapped[str] = mapped_column(String(32), default="active", nullable=False)
start_date: Mapped[date] = mapped_column(Date, nullable=False)
end_date: Mapped[date] = mapped_column(Date, nullable=False)
daily_minutes: Mapped[int] = mapped_column(Integer, nullable=False)
algorithm_version: Mapped[str] = mapped_column(String(40), default="adaptive-v1", nullable=False)
planning_factors: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
class DailyPlan(Base):
"""One persisted, explainable plan for one student and local study date."""
__tablename__ = "daily_plans"
__table_args__ = (
UniqueConstraint("user_id", "date", name="uq_daily_plans_user_date"),
Index("ix_daily_plans_user_status_date", "user_id", "status", "date"),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("dpl"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
plan_date: Mapped[date] = mapped_column("date", Date, nullable=False)
generation: Mapped[int] = mapped_column(Integer, default=1, nullable=False)
version: Mapped[str] = mapped_column(String(40), default="learning-engine-v1", nullable=False)
status: Mapped[str] = mapped_column(String(24), default="active", nullable=False)
available_minutes: Mapped[int] = mapped_column(Integer, nullable=False)
planned_minutes: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
completed_minutes: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
input_summary: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
reason_snapshot: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
generated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
regenerated_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
class DailyTask(Base):
__tablename__ = "daily_tasks"
__table_args__ = (
UniqueConstraint("daily_plan_id", "logical_key", name="uq_daily_tasks_plan_logical_key"),
Index("ix_daily_tasks_user_status_due", "user_id", "status", "scheduled_for"),
Index("ix_daily_tasks_plan_due", "study_plan_id", "scheduled_for"),
Index("ix_daily_tasks_daily_plan_status", "daily_plan_id", "status"),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("tsk"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
study_plan_id: Mapped[str] = mapped_column(String(40), ForeignKey("study_plans.id", ondelete="CASCADE"), index=True, nullable=False)
daily_plan_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("daily_plans.id", ondelete="CASCADE"), index=True, nullable=True)
logical_key: Mapped[str | None] = mapped_column(String(220), nullable=True)
subject_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("subjects.id", ondelete="SET NULL"), index=True, nullable=True)
chapter_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("chapters.id", ondelete="SET NULL"), index=True, nullable=True)
task_type: Mapped[str] = mapped_column(String(32), nullable=False)
title: Mapped[str] = mapped_column(String(220), nullable=False)
status: Mapped[str] = mapped_column(String(32), default="pending", nullable=False)
scheduled_for: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
duration_minutes: Mapped[int] = mapped_column(Integer, nullable=False)
priority: Mapped[float] = mapped_column(Float, default=1.0, nullable=False)
href: Mapped[str | None] = mapped_column(String(500), nullable=True)
mission_id: Mapped[str | None] = mapped_column(String(120), nullable=True)
rescheduled_from_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("daily_tasks.id", ondelete="SET NULL"), index=True, nullable=True)
task_metadata: Mapped[dict[str, Any]] = mapped_column("metadata", JSON, default=dict, nullable=False)
completed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
class StudySession(Base):
__tablename__ = "study_sessions"
__table_args__ = (Index("ix_study_sessions_user_started", "user_id", "started_at"),)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("ses"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
daily_task_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("daily_tasks.id", ondelete="SET NULL"), index=True, nullable=True)
subject_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("subjects.id", ondelete="SET NULL"), index=True, nullable=True)
chapter_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("chapters.id", ondelete="SET NULL"), index=True, nullable=True)
status: Mapped[str] = mapped_column(String(32), default="started", nullable=False)
started_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
ended_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
duration_minutes: Mapped[int | None] = mapped_column(Integer, nullable=True)
session_data: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
class LessonProgress(Base):
__tablename__ = "lesson_progress"
__table_args__ = (
UniqueConstraint("user_id", "chapter_id", "mission_id", name="uq_lesson_progress_user_mission"),
Index("ix_lesson_progress_user_status", "user_id", "status"),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("lpr"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
chapter_id: Mapped[str] = mapped_column(String(40), ForeignKey("chapters.id", ondelete="CASCADE"), index=True, nullable=False)
mission_id: Mapped[str] = mapped_column(String(120), nullable=False)
status: Mapped[str] = mapped_column(String(32), default="not_started", nullable=False)
progress_percent: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
current_step: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
completed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
last_seen_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
class RevisionItem(Base):
"""One intentional item the student asked DocDoe to bring back for revision.
RepairItem is deliberately narrower: it models an unresolved wrong answer.
RevisionItem covers manual saves and lesson recaps as well, with an
idempotency key so returning to a lesson or double-clicking Save cannot
manufacture duplicate revision work.
"""
__tablename__ = "revision_items"
__table_args__ = (
UniqueConstraint("user_id", "client_item_id", name="uq_revision_items_user_client"),
Index("ix_revision_items_user_status_due", "user_id", "status", "due_at"),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("rev"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
client_item_id: Mapped[str] = mapped_column(String(180), nullable=False)
subject_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("subjects.id", ondelete="SET NULL"), index=True, nullable=True)
chapter_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("chapters.id", ondelete="SET NULL"), index=True, nullable=True)
mission_id: Mapped[str | None] = mapped_column(String(120), nullable=True)
topic_key: Mapped[str | None] = mapped_column(String(180), nullable=True)
title: Mapped[str] = mapped_column(String(220), nullable=False)
source_kind: Mapped[str] = mapped_column(String(40), nullable=False)
source_ref: Mapped[str | None] = mapped_column(String(120), nullable=True)
status: Mapped[str] = mapped_column(String(24), default="pending", nullable=False)
due_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
completed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
item_data: Mapped[dict[str, Any]] = mapped_column("metadata", JSON, default=dict, nullable=False)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
class LearningEvent(Base):
"""Append-only, ownership-scoped audit record for meaningful learning actions.
It is intentionally a transactional application ledger, not a second
source of truth. Domain rows remain authoritative; this links together the
action, its owning student, and the record that caused it.
"""
__tablename__ = "learning_events"
__table_args__ = (
UniqueConstraint("user_id", "idempotency_key", name="uq_learning_events_user_key"),
Index("ix_learning_events_user_occurred", "user_id", "occurred_at"),
Index("ix_learning_events_user_type_occurred", "user_id", "event_type", "occurred_at"),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("lev"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
event_type: Mapped[str] = mapped_column(String(64), nullable=False)
entity_type: Mapped[str] = mapped_column(String(64), nullable=False)
entity_id: Mapped[str] = mapped_column(String(100), nullable=False)
idempotency_key: Mapped[str] = mapped_column(String(220), nullable=False)
subject_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("subjects.id", ondelete="SET NULL"), index=True, nullable=True)
chapter_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("chapters.id", ondelete="SET NULL"), index=True, nullable=True)
topic_key: Mapped[str | None] = mapped_column(String(180), nullable=True)
event_data: Mapped[dict[str, Any]] = mapped_column("metadata", JSON, default=dict, nullable=False)
occurred_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
class StudyFollowUp(Base):
"""A concrete unresolved action promoted from Study Chat into planning."""
__tablename__ = "study_followups"
__table_args__ = (
UniqueConstraint("user_id", "client_followup_id", name="uq_study_followups_user_client"),
Index("ix_study_followups_user_status_due", "user_id", "status", "due_at"),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("sfu"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
chat_session_id: Mapped[str] = mapped_column(String(40), ForeignKey("chat_sessions.id", ondelete="CASCADE"), index=True, nullable=False)
source_message_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("chat_messages.id", ondelete="SET NULL"), nullable=True)
client_followup_id: Mapped[str] = mapped_column(String(160), nullable=False)
kind: Mapped[str] = mapped_column(String(40), nullable=False)
title: Mapped[str] = mapped_column(String(220), nullable=False)
subject: Mapped[str | None] = mapped_column(String(120), nullable=True)
chapter: Mapped[str | None] = mapped_column(String(180), nullable=True)
topic: Mapped[str | None] = mapped_column(String(180), nullable=True)
status: Mapped[str] = mapped_column(String(24), default="open", nullable=False)
due_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
estimated_minutes: Mapped[int] = mapped_column(Integer, default=10, nullable=False)
source_ref: Mapped[str | None] = mapped_column(String(180), nullable=True)
target_data: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
completed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
class QuizAttempt(Base):
__tablename__ = "quiz_attempts"
__table_args__ = (
UniqueConstraint(
"user_id",
"client_attempt_id",
name="uq_quiz_attempts_user_client",
),
Index("ix_quiz_attempts_user_completed", "user_id", "completed_at"),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("qat"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
client_attempt_id: Mapped[str | None] = mapped_column(String(180), nullable=True)
quiz_id: Mapped[str | None] = mapped_column(String(40), nullable=True)
daily_task_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("daily_tasks.id", ondelete="SET NULL"), index=True, nullable=True)
subject_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("subjects.id", ondelete="SET NULL"), index=True, nullable=True)
chapter_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("chapters.id", ondelete="SET NULL"), index=True, nullable=True)
score: Mapped[float] = mapped_column(Float, nullable=False)
max_score: Mapped[float] = mapped_column(Float, nullable=False)
answers: Mapped[list[dict[str, Any]]] = mapped_column(JSON, default=list, nullable=False)
corrections: Mapped[list[dict[str, Any]]] = mapped_column(JSON, default=list, nullable=False)
missing_keywords: Mapped[list[str]] = mapped_column(JSON, default=list, nullable=False)
misconceptions: Mapped[list[str]] = mapped_column(JSON, default=list, nullable=False)
completed_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False)
class TopicMastery(Base):
__tablename__ = "topic_mastery"
__table_args__ = (
UniqueConstraint("user_id", "topic_key", name="uq_topic_mastery_user_topic"),
Index("ix_topic_mastery_user_score_review", "user_id", "score", "next_review_at"),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("mst"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
subject_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("subjects.id", ondelete="SET NULL"), index=True, nullable=True)
chapter_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("chapters.id", ondelete="SET NULL"), index=True, nullable=True)
topic_key: Mapped[str] = mapped_column(String(180), nullable=False)
topic_label: Mapped[str] = mapped_column(String(180), nullable=False)
score: Mapped[float] = mapped_column(Float, default=0.0, nullable=False)
confidence: Mapped[float] = mapped_column(Float, default=0.0, nullable=False)
attempts_count: Mapped[int] = mapped_column(Integer, default=0, nullable=False)
last_result: Mapped[str | None] = mapped_column(String(32), nullable=True)
next_review_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
evidence: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
class CheckpointEvent(Base):
"""One student answer to one checkpoint question — the atomic evidence unit.
``(user_id, client_event_id)`` is unique so double-clicks, retries after
network errors, and two open tabs cannot double-count evidence: replays
return the stored consequence instead of re-applying it.
"""
__tablename__ = "checkpoint_events"
__table_args__ = (
UniqueConstraint("user_id", "client_event_id", name="uq_checkpoint_events_user_client"),
Index("ix_checkpoint_events_user_concept", "user_id", "concept_key", "created_at"),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("ckp"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
client_event_id: Mapped[str] = mapped_column(String(80), nullable=False)
concept_key: Mapped[str] = mapped_column(String(180), nullable=False)
question_id: Mapped[str] = mapped_column(String(120), nullable=False)
attempt_index: Mapped[int] = mapped_column(Integer, default=1, nullable=False)
kind: Mapped[str] = mapped_column(String(40), nullable=False)
correct: Mapped[bool] = mapped_column(Boolean, nullable=False)
error_category: Mapped[str | None] = mapped_column(String(48), nullable=True)
hint_used: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
payload: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
consequence: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
class RepairItem(Base):
"""A visible consequence of a wrong answer.
One OPEN row per (user, concept_key, error_category) — repeated failures
escalate the same item instead of duplicating it; a successful retry
resolves it idempotently. DailyTasks link back via
``task_metadata["repair_item_id"]`` so the plan and the queue stay one story.
"""
__tablename__ = "repair_items"
__table_args__ = (
Index("ix_repair_items_user_status", "user_id", "status"),
Index("ix_repair_items_user_concept", "user_id", "concept_key"),
Index(
"uq_repair_items_open_concept_error",
"user_id",
"concept_key",
"error_category",
unique=True,
postgresql_where=text("status IN ('open', 'escalated')"),
sqlite_where=text("status IN ('open', 'escalated')"),
),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("rep"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
subject_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("subjects.id", ondelete="SET NULL"), nullable=True)
chapter_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("chapters.id", ondelete="SET NULL"), nullable=True)
concept_key: Mapped[str] = mapped_column(String(180), nullable=False)
concept_label: Mapped[str] = mapped_column(String(180), nullable=False)
mission_id: Mapped[str | None] = mapped_column(String(120), nullable=True)
error_category: Mapped[str] = mapped_column(String(48), nullable=False)
diagnosis: Mapped[str] = mapped_column(Text, nullable=False)
recommended_activity: Mapped[str] = mapped_column(String(48), nullable=False)
activity_prompt: Mapped[str] = mapped_column(Text, nullable=False)
priority: Mapped[float] = mapped_column(Float, default=1.5, nullable=False)
estimated_minutes: Mapped[int] = mapped_column(Integer, default=10, nullable=False)
status: Mapped[str] = mapped_column(String(24), default="open", nullable=False)
support_level: Mapped[int] = mapped_column(Integer, default=1, nullable=False)
failed_attempts: Mapped[int] = mapped_column(Integer, default=1, nullable=False)
retry_result: Mapped[str | None] = mapped_column(String(24), nullable=True)
mastery_recovered: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
source_kind: Mapped[str] = mapped_column(String(40), default="checkpoint", nullable=False)
source_ref: Mapped[str | None] = mapped_column(String(80), nullable=True)
evidence: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
resolved_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
class GeneratedResource(Base):
__tablename__ = "generated_resources"
__table_args__ = (Index("ix_generated_resources_user_type_created", "user_id", "resource_type", "created_at"),)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("res"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
subject_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("subjects.id", ondelete="SET NULL"), index=True, nullable=True)
chapter_id: Mapped[str | None] = mapped_column(String(40), ForeignKey("chapters.id", ondelete="SET NULL"), index=True, nullable=True)
source_id: Mapped[str | None] = mapped_column(String(80), nullable=True)
resource_type: Mapped[str] = mapped_column(String(40), nullable=False)
title: Mapped[str] = mapped_column(String(220), nullable=False)
status: Mapped[str] = mapped_column(String(32), default="ready", nullable=False)
storage_url: Mapped[str | None] = mapped_column(Text, nullable=True)
resource_data: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
class Subscription(Base):
__tablename__ = "subscriptions"
__table_args__ = (
Index("ix_subscriptions_provider_customer", "provider_customer_id", unique=True),
Index("ix_subscriptions_provider_subscription", "provider_subscription_id", unique=True),
)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("subn"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), unique=True, index=True, nullable=False)
plan_key: Mapped[str] = mapped_column(String(80), default="free", nullable=False)
status: Mapped[str] = mapped_column(String(32), default="active", nullable=False)
usage_limits: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
provider_customer_id: Mapped[str | None] = mapped_column(String(180), nullable=True)
provider_subscription_id: Mapped[str | None] = mapped_column(String(180), nullable=True)
provider_price_id: Mapped[str | None] = mapped_column(String(180), nullable=True)
cancel_at_period_end: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
current_period_start: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
current_period_end: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), onupdate=func.now(), nullable=False)
class StripeWebhookEvent(Base):
"""Minimal idempotency ledger for Stripe event delivery.
The raw webhook payload is deliberately not stored because it can contain
customer and payment data. The event ID is enough to prevent duplicate
entitlement changes while still allowing failed transactions to retry.
"""
__tablename__ = "stripe_webhook_events"
event_id: Mapped[str] = mapped_column(String(180), primary_key=True)
event_type: Mapped[str] = mapped_column(String(100), nullable=False)
processed_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True),
server_default=func.now(),
nullable=False,
)
class UsageEvent(Base):
__tablename__ = "usage_events"
__table_args__ = (Index("ix_usage_events_user_type_occurred", "user_id", "event_type", "occurred_at"),)
id: Mapped[str] = mapped_column(String(40), primary_key=True, default=lambda: prefixed_id("uev"))
user_id: Mapped[str] = mapped_column(String(40), ForeignKey("users.id", ondelete="CASCADE"), index=True, nullable=False)
event_type: Mapped[str] = mapped_column(String(80), nullable=False)
resource_type: Mapped[str | None] = mapped_column(String(80), nullable=True)
units: Mapped[float] = mapped_column(Float, default=1.0, nullable=False)
event_data: Mapped[dict[str, Any]] = mapped_column("metadata", JSON, default=dict, nullable=False)
occurred_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now(), nullable=False)
|