good morning

Signed-off-by: Kenneth Obsequio <k80308392@gmail.com>

controllers/admin/courses.controller.js

@@ -2535,59 +2535,6 @@ exports.getLessonsFlat = async (req, res) => {
   }
 };
 
-// One row per unit quiz (a quiz is always unit-scoped, unit_id unique on
-// unit_quizzes) — `courses[]` is the deduped set of courses the parent unit
-// is attached to, batch-fetched the same way as getUnitsFlat/getLessonsFlat.
-// Used by the pass_quiz task requirement picker — same "no content yet"
-// convention as read_*: question_count === 0 is flagged the same way
-// duration_seconds === 0 is for content requirements.
-exports.getQuizzesFlat = async (req, res) => {
-  try {
-    const rows = await sequelize.query(`
-      SELECT
-        q.quiz_id, q.uuid, q.title, u.title AS unit_title,
-        (SELECT CAST(COUNT(*) AS INTEGER) FROM quiz_questions qq
-          WHERE qq.quiz_id = q.quiz_id AND qq."deletedAt" IS NULL) AS question_count
-      FROM unit_quizzes q
-      JOIN units u ON u.unit_id = q.unit_id AND u."deletedAt" IS NULL
-      WHERE q."deletedAt" IS NULL
-      ORDER BY u.title ASC, q.title ASC
-    `, { type: sequelize.QueryTypes.SELECT });
-
-    const quizIds = rows.map((r) => r.quiz_id);
-    const courseLinkRows = quizIds.length ? await sequelize.query(`
-      SELECT q.quiz_id, c.uuid, c.title
-      FROM unit_quizzes q
-      JOIN course_units cu ON cu.unit_id = q.unit_id
-      JOIN courses c ON c.course_id = cu.course_id AND c."deletedAt" IS NULL
-      WHERE q.quiz_id IN (:quizIds)
-      ORDER BY c.title ASC
-    `, { replacements: { quizIds }, type: sequelize.QueryTypes.SELECT }) : [];
-
-    const coursesByQuiz = new Map();
-    for (const row of courseLinkRows) {
-      const list = coursesByQuiz.get(row.quiz_id) ?? [];
-      list.push({ uuid: row.uuid, title: row.title });
-      coursesByQuiz.set(row.quiz_id, list);
-    }
-
-    const data = rows.map((r) => ({
-      uuid:             r.uuid,
-      title:            r.title || `${r.unit_title} Quiz`,
-      unit_title:       r.unit_title ?? "",
-      courses:          coursesByQuiz.get(r.quiz_id) ?? [],
-      question_count:   Number(r.question_count ?? 0),
-      // duration_seconds doesn't apply to quizzes — ContentPicker's "no
-      // content" check keys off duration_seconds === 0, so surface the same
-      // signal under that name rather than adding a second code path.
-      duration_seconds: Number(r.question_count ?? 0),
-    }));
-    return R.success(res, "Quizzes retrieved.", data);
-  } catch (err) {
-    console.error("[QUIZ][GET FLAT]", err);
-    return R.error(res, "Could not retrieve quizzes.", 500);
-  }
-};
 // ══════════════════════════════════════════════════════════════════════════════
 // COURSE INSTRUCTORS
 // ══════════════════════════════════════════════════════════════════════════════

controllers/admin/task.controller.js

@@ -33,8 +33,6 @@ const LessonReadingProgress = require('../../models/courses/lesson_reading_progr
 const UnitReadingProgress = require('../../models/courses/unit_reading_progress.mdl');
 const Lesson = require('../../models/courses/lessons.mdl');
 const Unit = require('../../models/courses/units.mdl');
-const QuizAttempt = require('../../models/courses/quiz_attempt.mdl');
-const UnitQuiz = require('../../models/courses/unit_quiz.mdl');
 
 // ─── URL normalizer — ensures protocol prefix so link_url is never a relative path ──
 const normalizeUrl = (url) => {
@@ -679,14 +677,14 @@ const PREREQUISITE_INCLUDE = {
 class TaskValidationError extends Error {}
 
 // ─── Pre-completed assignees check ────────────────────────────────────────────
-// A read_course/read_unit/read_lesson/pass_quiz requirement can reference content
+// A read_course/read_unit/read_lesson requirement can reference content
 // that a task list's assignees already finished BEFORE this requirement existed.
 // That's not an error — task_reading_progress_sync.service.js's hydrateReadTaskProgress
 // (client-side, on task list load) already auto-marks it done for them — but the
 // admin creating/editing the task has no visibility into it otherwise. This is a
 // heads-up, not a validator: it never blocks create/update, only informs.
 const READ_TYPE_TO_PROGRESS_TYPE = { read_course: 'course', read_unit: 'unit', read_lesson: 'lesson' };
-const progressKeyType = (reqType) => (reqType === 'pass_quiz' ? 'pass_quiz' : READ_TYPE_TO_PROGRESS_TYPE[reqType]);
+const progressKeyType = (reqType) => READ_TYPE_TO_PROGRESS_TYPE[reqType];
 
 async function getPreCompletedAssignees(taskListId, requirements, transaction) {
     const contentReqs = (requirements ?? []).filter(
@@ -772,30 +770,6 @@ async function getPreCompletedAssignees(taskListId, requirements, transaction) {
         }
     }
 
-    // ── pass_quiz ────────────────────────────────────────────────────────────
-    const quizReqs = contentReqs.filter((r) => r.type === 'pass_quiz');
-    if (quizReqs.length) {
-        const quizUuids = [...new Set(quizReqs.map((r) => r.reference_id))];
-        const quizzes = await UnitQuiz.findAll({
-            where: { uuid: { [Op.in]: quizUuids } },
-            attributes: ['quiz_id', 'uuid'],
-            transaction,
-        });
-        const uuidByQuizId = new Map(quizzes.map((q) => [q.quiz_id, q.uuid]));
-        const quizIds = quizzes.map((q) => q.quiz_id);
-        if (quizIds.length) {
-            const rows = await QuizAttempt.findAll({
-                where: { quiz_id: { [Op.in]: quizIds }, user_id: { [Op.in]: userIds }, passed: true },
-                attributes: ['user_id', 'quiz_id'],
-                transaction,
-            });
-            for (const row of rows) {
-                const uuid = uuidByQuizId.get(row.quiz_id);
-                if (uuid) markCompleted('pass_quiz', uuid, row.user_id);
-            }
-        }
-    }
-
     // ── One entry per requirement that has at least one already-completed assignee ──
     const results = [];
     for (const r of contentReqs) {

controllers/auth.controller.js

@@ -39,7 +39,7 @@ const mdl_Users = require('../models/users/users.mdl');
 const mdl_UserSessions = require('../models/users/user_sessions.mdl');
 const { checkAccountStatus } = require('../services/accountStatus.service');
 const { mdl_UserGroups, mdl_UserGroupMembers } = require('../models/users/user_groups.mdl')
-const { NOGRP_CODE, getDefaultGroupId, enrollDefaultGroup } = require('../utils/defaultGroup.util');
+const { NOGRP_CODE, getDefaultGroupId, enrollDefaultGroup, switchFromNogrpByCode } = require('../utils/defaultGroup.util');
 const { generateTokens, verifyRefreshToken, hashToken, shouldRotateRefreshToken } = require('../utils/token.util');
 const { generateState, generateNonce, generatePKCE, buildAuthUrl, exchangeCode, verifyIdToken } = require('../utils/google_oidc.util');
 const { generateOTP, getOTPExpiry, isOTPExpired } = require('../utils/otp.util');
@@ -366,7 +366,7 @@ exports.resendOTP = async (req, res) => {
 // ─── System Login ──────────────────────────────────────────────────────────────
 exports.login = async (req, res) => {
   try {
-    const { email, password } = req.body;
+    const { email, password, group_code } = req.body;
 
     const user = await mdl_Users.findOne({ where: { email } });
     if (!user) return R.error(res, 'Invalid credentials.', 401);
@@ -386,7 +386,17 @@ exports.login = async (req, res) => {
     const match = await bcrypt.compare(password, user.password);
     if (!match) return R.error(res, 'Invalid credentials.', 401);
 
-    // Password confirmed. If this device already cleared an OTP recently and
+    // Password confirmed the account is genuinely theirs — same bar register
+    // uses before enrolling into a group, so an invite link followed by
+    // "already have an account? sign in" moves a NOGRP user into the group
+    // right here rather than dead-ending on an invite link that only works
+    // for brand-new accounts.
+    if (group_code) {
+      await switchFromNogrpByCode(user.user_id, group_code)
+        .catch(err => console.error('[AUTH] login: Failed to switch NOGRP membership:', err));
+    }
+
+    // If this device already cleared an OTP recently and
     // its trust window hasn't lapsed or been revoked, skip the OTP gate
     // entirely — otherwise fall through to the usual fresh-OTP flow. Tokens
     // are only ever minted via mintSession (called here or from verifyOTP).
@@ -431,10 +441,14 @@ exports.googleRedirect = (req, res) => {
   const state  = generateState();
   const nonce  = generateNonce();
   const { codeVerifier, codeChallenge } = generatePKCE();
+  // Carried through to the callback below — an invite link's group_code has
+  // to survive the round trip to Google and back, so it rides in the same
+  // short-lived signed cookie as state/nonce/codeVerifier.
+  const group_code = typeof req.query.group_code === 'string' ? req.query.group_code.trim() : null;
 
   // SameSite=Lax is required: the cookie must survive the cross-site redirect
   // back from Google (top-level GET navigations are allowed under Lax).
-  res.cookie('_oauth', JSON.stringify({ state, nonce, codeVerifier }), {
+  res.cookie('_oauth', JSON.stringify({ state, nonce, codeVerifier, group_code }), {
     httpOnly: true,
     secure:   process.env.NODE_ENV === 'production',
     sameSite: 'lax',
@@ -470,7 +484,7 @@ exports.googleCallback = async (req, res) => {
       return res.redirect(CALLBACK_PAGE);
     }
 
-    const { state: expectedState, nonce, codeVerifier } = JSON.parse(rawCookie);
+    const { state: expectedState, nonce, codeVerifier, group_code } = JSON.parse(rawCookie);
 
     if (!state || state !== expectedState) {
       setGoogleResultCookie(res, { error: 'state_mismatch' });
@@ -554,6 +568,14 @@ exports.googleCallback = async (req, res) => {
       return res.redirect(CALLBACK_PAGE);
     }
 
+    // Identity is confirmed by Google itself — same bar as a password match on
+    // the system login path — so a NOGRP user (brand-new or returning) riding
+    // in on an invite link gets moved into that group right here.
+    if (group_code) {
+      await switchFromNogrpByCode(user.user_id, group_code)
+        .catch(err => console.error('[AUTH] googleCallback: Failed to switch NOGRP membership:', err));
+    }
+
     // Every Google sign-in (new or returning account) still has to clear the
     // same OTP gate as a manual login, unless this device already cleared one
     // recently and its trust window hasn't lapsed or been revoked — same

controllers/client/courses.controller.js

@@ -1273,52 +1273,6 @@ exports.getUnitByUuid = async (req, res) => {
   }
 };
 
-// "Quiz (self-enrich for pass_quiz task requirement blocks)" — mirrors
-// getUnitByUuid/getLessonByUuid's uuid-lookup pattern. A quiz is always
-// unit-scoped (unit_quizzes.unit_id unique) so access resolves through its
-// one parent unit, same rule canAccessUnit already implements.
-exports.getQuizByUuid = async (req, res) => {
-  try {
-    const { uuid } = req.params;
-    const quiz = await UnitQuiz.findOne({
-      where: { uuid, ...notDeleted },
-      attributes: ["quiz_id", "uuid", "title", "is_required", "passing_score"],
-      include: [{
-        model: Unit, as: "unit",
-        attributes: ["unit_id", "uuid", "title"],
-        include: [{
-          model: Course, as: "courses",
-          where: notDeleted, required: false,
-          attributes: ["course_id", "title", "subscription"],
-          through: { attributes: [] },
-        }],
-      }],
-    });
-    if (!quiz) return R.error(res, "Quiz not found.", 404);
-
-    if (!await canAccessUnit(req.user.user_id, quiz.unit.unit_id)) {
-      const first = quiz.unit.courses?.[0] ?? null;
-      return res.status(403).json({
-        status: "error",
-        message: "You do not have access to this quiz.",
-        course: first ? { title: first.title, subscription: first.subscription } : null,
-      });
-    }
-
-    const passedAttempt = await QuizAttempt.findOne({
-      where: { quiz_id: quiz.quiz_id, user_id: req.user.user_id, passed: true },
-    });
-
-    const plain = quiz.toJSON();
-    plain.unit.course = plain.unit.courses?.[0] ?? null; // back-compat singular field
-    plain.has_passed = !!passedAttempt;
-    return R.success(res, "Quiz retrieved.", plain);
-  } catch (err) {
-    console.error("[CLIENT][QUIZ][BY UUID]", err);
-    return R.error(res, "Could not retrieve quiz.", 500);
-  }
-};
-
 // "Units → Lessons (returns all data)" — a Unit resolves all of its lesson
 // content in one call, with or without a parent course.
 exports.getLessonsByUnitUuid = async (req, res) => {

controllers/client/task.controller.js

@@ -17,7 +17,6 @@ const { TaskCompletion, TaskCompletionFile } = require('../../models/task/task_c
 const { TaskLinkVisit, TaskProgress } = require('../../models/task/task_progress.mdl');
 const { mdl_UserGroups, mdl_UserGroupMembers } = require('../../models/users/user_groups.mdl');
 const mdl_Users = require('../../models/users/users.mdl');
-const { QuizAttempt } = require('../../models/courses/courses.associations');
 
 const { userExclude } = require('../../models/task/task.attributes');
 const { clientExclude } = require('../../models/task/task_completion.attributes');
@@ -135,15 +134,9 @@ const isMember = async (userId, groupId) => {
 
 // ─── Helper: per-user completion signals for a batch of tasks ─────────────────
 // Shared by getGroupTaskList/getGroupTaskLists. upload_file/submit_text share
-// one TaskCompletion per task (resubmit-anytime — latest by submitted_at wins);
-// pass_quiz is computed live from QuizAttempt, same as unit-quiz has_passed
-// (courses.controller.js) rather than a separately-synced TaskProgress row.
-const getTaskCompletionSignals = async (userId, taskIds, requirements) => {
-    const quizIds = [...new Set(
-        requirements.filter((r) => r.type === 'pass_quiz' && r.reference_id).map((r) => r.reference_id)
-    )];
-
-    const [completions, linkVisits, progressRows, passedAttempts] = await Promise.all([
+// one TaskCompletion per task (resubmit-anytime — latest by submitted_at wins).
+const getTaskCompletionSignals = async (userId, taskIds) => {
+    const [completions, linkVisits, progressRows] = await Promise.all([
         taskIds.length
             ? TaskCompletion.findAll({
                 where: { task_id: { [Op.in]: taskIds }, user_id: userId },
@@ -163,12 +156,6 @@ const getTaskCompletionSignals = async (userId, taskIds, requirements) => {
                 attributes: ['task_id', 'requirement_id', 'reference_id'],
             })
             : [],
-        quizIds.length
-            ? QuizAttempt.findAll({
-                where: { quiz_id: { [Op.in]: quizIds }, user_id: userId, passed: true },
-                attributes: ['quiz_id'],
-            })
-            : [],
     ]);
 
     // First row per task_id wins — completions are ordered submitted_at DESC.
@@ -181,7 +168,6 @@ const getTaskCompletionSignals = async (userId, taskIds, requirements) => {
         latestCompletionByTask,
         visitedRequirementIds: new Set(linkVisits.map((v) => v.requirement_id)),
         completedProgressKeys: new Set(progressRows.map((p) => `${p.requirement_id}:${p.reference_id}`)),
-        passedQuizIds: new Set(passedAttempts.map((a) => String(a.quiz_id))),
     };
 };
 
@@ -200,8 +186,6 @@ const isRequirementDone = (r, signals) => {
         case 'read_unit':
         case 'read_lesson':
             return signals.completedProgressKeys.has(`${r.requirement_id}:${r.reference_id}`);
-        case 'pass_quiz':
-            return signals.passedQuizIds.has(String(r.reference_id));
         default:
             return true; // unknown requirement types don't block completion
     }
@@ -241,7 +225,7 @@ const checkTaskCompletion = async (userId, taskId) => {
     const reqs = await TaskRequirement.findAll({ where: { task_id: taskId } });
     if (!reqs.length) return false;
     const plainReqs = reqs.map((r) => r.toJSON());
-    const signals = await getTaskCompletionSignals(userId, [taskId], plainReqs);
+    const signals = await getTaskCompletionSignals(userId, [taskId]);
     return plainReqs.every((r) => isRequirementDone(r, signals));
 };
 
@@ -359,8 +343,7 @@ exports.getGroupTaskList = async (req, res) => {
         await hydrateReadTaskProgress(userId, readRequirements);
 
         // ── Fetch user's completion signals for these tasks ────────────────────
-        const allRequirements = tasks.flatMap((task) => task.requirements ?? []);
-        const signals = await getTaskCompletionSignals(userId, taskIds, allRequirements);
+        const signals = await getTaskCompletionSignals(userId, taskIds);
 
         const now = Date.now();
 
@@ -490,8 +473,7 @@ exports.getGroupTaskLists = async (req, res) => {
         await hydrateReadTaskProgress(userId, readRequirements);
 
         // ── Fetch user's completion signals for these tasks ────────────────────
-        const allRequirements = allTasks.flatMap((task) => task.requirements ?? []);
-        const signals = await getTaskCompletionSignals(userId, taskIds, allRequirements);
+        const signals = await getTaskCompletionSignals(userId, taskIds);
 
         const now = Date.now();
 

controllers/client/task_progress.controller.js

@@ -31,7 +31,6 @@ const { mdl_UserGroupMembers }                 = require('../../models/users/use
 const { Course }                                = require('../../models/courses/courses.mdl');
 const CourseAssessment                          = require('../../models/courses/course_assessment.mdl');
 const QuizAttempt                               = require('../../models/courses/quiz_attempt.mdl');
-const UnitQuiz                                  = require('../../models/courses/unit_quiz.mdl');
 const logActivity                              = require('../../utils/logActivity.util');
 const R = require('../../utils/response.util');
 const { hydrateReadTaskProgress }              = require('../../services/task_reading_progress_sync.service');
@@ -141,35 +140,6 @@ exports.getTaskProgress = async (req, res) => {
 
         await hydrateReadTaskProgress(req.user.user_id, readRequirements);
 
-        // pass_quiz completion is computed live from QuizAttempt (same source
-        // has_passed already uses for unit quizzes) rather than a synced
-        // TaskProgress row — reference_id on the requirement is the quiz's
-        // uuid, so resolve to quiz_id first.
-        const quizRequirements = await TaskRequirement.findAll({
-            where: { task_id: taskId, type: 'pass_quiz' },
-            attributes: ['requirement_id', 'reference_id'],
-        });
-        const quizPassedRows = [];
-        if (quizRequirements.length) {
-            const quizUuids = [...new Set(quizRequirements.map((r) => r.reference_id).filter(Boolean))];
-            const quizzes = await UnitQuiz.findAll({ where: { uuid: quizUuids }, attributes: ['quiz_id', 'uuid'] });
-            const quizIdByUuid = new Map(quizzes.map((q) => [q.uuid, q.quiz_id]));
-            const quizIds = quizzes.map((q) => q.quiz_id);
-            const passedAttempts = quizIds.length
-                ? await QuizAttempt.findAll({ where: { quiz_id: { [Op.in]: quizIds }, user_id: req.user.user_id, passed: true }, attributes: ['quiz_id'] })
-                : [];
-            const passedQuizIds = new Set(passedAttempts.map((a) => String(a.quiz_id)));
-            for (const r of quizRequirements) {
-                const quizId = quizIdByUuid.get(r.reference_id);
-                quizPassedRows.push({
-                    requirement_id: r.requirement_id,
-                    reference_id:   r.reference_id,
-                    completed:      quizId ? passedQuizIds.has(String(quizId)) : false,
-                    completed_at:   null,
-                });
-            }
-        }
-
         const [linkVisits, progress] = await Promise.all([
             TaskLinkVisit.findAll({
                 where: { task_id: taskId, user_id: req.user.user_id },
@@ -183,7 +153,7 @@ exports.getTaskProgress = async (req, res) => {
 
         return R.success(res, 'Task progress retrieved.', {
             link_visits: linkVisits,
-            progress: [...progress, ...quizPassedRows],
+            progress,
         });
     } catch (err) {
         console.error('[CLIENT][GET TASK PROGRESS]', err);

database/migrations/20270101000036-create-task-requirements.js

@@ -1,15 +1,15 @@
 'use strict';
 
 // The live enum type backing `type` is named task_requirement_type (not the
-// Sequelize-default enum_task_requirements_type) — submit_text/pass_quiz were
-// added to it later via ALTER TYPE (20260715000001). Declared here with the
-// full merged value set.
+// Sequelize-default enum_task_requirements_type) — submit_text was added to
+// it later via ALTER TYPE (20260715000001). Declared here with the full
+// merged value set.
 module.exports = {
   async up(queryInterface, Sequelize) {
     await queryInterface.createTable('task_requirements', {
       requirement_id:     { type: Sequelize.UUID, defaultValue: Sequelize.UUIDV4, primaryKey: true },
       task_id:            { type: Sequelize.UUID, allowNull: false, references: { model: 'tasks', key: 'task_id' }, onDelete: 'CASCADE' },
-      type:               { type: Sequelize.ENUM('visit_link', 'upload_file', 'read_course', 'read_unit', 'read_lesson', 'submit_text', 'pass_quiz'), allowNull: false },
+      type:               { type: Sequelize.ENUM('visit_link', 'upload_file', 'read_course', 'read_unit', 'read_lesson', 'submit_text'), allowNull: false },
       link_url:           { type: Sequelize.STRING, allowNull: true },
       link_label:         { type: Sequelize.STRING, allowNull: true },
       allowed_file_types: { type: Sequelize.JSONB, allowNull: true },

database/migrations/20270101000040-create-task-progress.js

@@ -1,8 +1,7 @@
 'use strict';
 
-// `type` is STRING + an explicit CHECK constraint (check_type) — pass_quiz
-// was added to the value set via a DROP/ADD CONSTRAINT swap (20260709000003),
-// not ALTER TYPE, confirming this column isn't a native enum on this DB.
+// `type` is STRING + an explicit CHECK constraint (check_type) — this
+// column isn't a native enum on this DB.
 module.exports = {
   async up(queryInterface, Sequelize) {
     await queryInterface.createTable('task_progress', {
@@ -22,7 +21,7 @@ module.exports = {
 
     await queryInterface.sequelize.query(
       `ALTER TABLE task_progress ADD CONSTRAINT check_type
-       CHECK (type IN ('read_course', 'read_unit', 'read_lesson', 'pass_quiz'))`
+       CHECK (type IN ('read_course', 'read_unit', 'read_lesson'))`
     );
 
     await queryInterface.addIndex('task_progress', { fields: ['requirement_id', 'user_id', 'reference_id'], unique: true, name: 'uq_tp_requirement_user_reference' });

models/task/task.mdl.js

@@ -59,7 +59,7 @@ const Task = sequelize.define('Task', {
 const TaskRequirement = sequelize.define('TaskRequirement', {
     requirement_id: { type: DataTypes.UUID, defaultValue: DataTypes.UUIDV4, primaryKey: true },
     task_id: { type: DataTypes.UUID, allowNull: false, references: { model: 'tasks', key: 'task_id' } },
-    type: { type: DataTypes.ENUM('visit_link', 'upload_file', 'read_course', 'read_unit', 'read_lesson', 'submit_text', 'pass_quiz'), allowNull: false, filterable: true },
+    type: { type: DataTypes.ENUM('visit_link', 'upload_file', 'read_course', 'read_unit', 'read_lesson', 'submit_text'), allowNull: false, filterable: true },
 
     // ── visit_link ──────────────────────────────────────────────────────────
     link_url: { type: DataTypes.STRING, allowNull: true, filterable: false },
@@ -69,8 +69,8 @@ const TaskRequirement = sequelize.define('TaskRequirement', {
     allowed_file_types: { type: DataTypes.JSONB, allowNull: true, filterable: false },
     max_file_count: { type: DataTypes.INTEGER, allowNull: true, defaultValue: 1, filterable: false },
 
-    // ── read_course / read_unit / read_lesson / pass_quiz ─────────────────────
-    reference_id: { type: DataTypes.UUID, allowNull: true, comment: 'course_id | unit_id | lesson_id | quiz_id depending on type', filterable: false },
+    // ── read_course / read_unit / read_lesson ──────────────────────────────────
+    reference_id: { type: DataTypes.UUID, allowNull: true, comment: 'course_id | unit_id | lesson_id depending on type', filterable: false },
     reference_label: { type: DataTypes.STRING, allowNull: true, comment: 'Cached display name so we do not always join', filterable: false },
 
     // ── submit_text ─────────────────────────────────────────────────────────

models/task/task_progress.mdl.js

@@ -99,10 +99,10 @@ const TaskProgress = sequelize.define('TaskProgress', {
     reference_id: {
         type: DataTypes.UUID,
         allowNull: false,
-        comment: 'course_id | unit_id | lesson_id | quiz_id depending on type.',
+        comment: 'course_id | unit_id | lesson_id depending on type.',
     },
     type: {
-        type: DataTypes.ENUM('read_course', 'read_unit', 'read_lesson', 'pass_quiz'),
+        type: DataTypes.ENUM('read_course', 'read_unit', 'read_lesson'),
         allowNull: false,
     },
     completed: {

routes/admin/courses.routes.js

@@ -23,7 +23,6 @@ router.get("/flat", ctrl.getCoursesFlat);
 router.get("/by-subscription", ctrl.getCoursesBySubscription);
 router.get("/units-flat", ctrl.getUnitsFlat);
 router.get("/lessons-flat", ctrl.getLessonsFlat);
-router.get("/quizzes-flat", ctrl.getQuizzesFlat);
 router.get("/uuid/:uuid/structure-counts", ctrl.getCourseStructureCounts);
 router.put("/order", ctrl.reorderCourses); // persist top-level course catalog ordering { course_ids }
 

routes/client/courses.routes.js

@@ -19,7 +19,6 @@ router.get('/unit/uuid/:uuid/task-context', progressCtrl.getUnitTaskContext);
 router.get('/unit/uuid/:uuid', ctrl.getUnitByUuid);
 router.get('/lesson/uuid/:uuid/task-context', progressCtrl.getLessonTaskContext);
 router.get('/lesson/uuid/:uuid', ctrl.getLessonByUuid);
-router.get('/quiz/uuid/:uuid', ctrl.getQuizByUuid);
 
 // Courses
 router.get('/', ctrl.getCourses);

services/task_reading_progress_sync.service.js

@@ -275,7 +275,7 @@ async function syncCompletedEntitiesToTaskProgress(userId, { lessonUuid, unitUui
     if (!newlyCompleted.length) return [];
 
     // Check whether any impacted task now has ALL its read-only requirements satisfied —
-    // tasks with any non-read requirement (upload_file/visit_link/submit_text/pass_quiz)
+    // tasks with any non-read requirement (upload_file/visit_link/submit_text)
     // still need manual submission, so they're excluded from auto-turn-in.
     const taskIds = [...new Set(newlyCompleted.map((r) => r.task_id))];
     const completedTasks = [];

utils/defaultGroup.util.js

@@ -65,4 +65,34 @@ async function reconcileDefaultGroup(user_ids, { createdBy = null } = {}) {
   );
 }
 
-module.exports = { NOGRP_CODE, getDefaultGroupId, enrollDefaultGroup, dropDefaultGroupMembership, reconcileDefaultGroup };
+/**
+ * Invite-link login: if user_id is currently sitting in NOGRP, move them into
+ * the group identified by group_code. Never reassigns someone already parked
+ * in a real (non-NOGRP) group — an invite link used post-login only fills in
+ * an ungrouped user's group, it doesn't override an existing one. No-op if
+ * group_code doesn't resolve to an active group.
+ */
+async function switchFromNogrpByCode(user_id, group_code, { updatedBy = null } = {}) {
+  if (!group_code) return null;
+
+  const group = await mdl_UserGroups.findOne({
+    where: { group_code: group_code.toUpperCase().trim(), is_active: true },
+  });
+  if (!group) return null;
+
+  const membership = await mdl_UserGroupMembers.findOne({
+    where:   { user_id },
+    include: [{ model: mdl_UserGroups, attributes: ['group_code'] }],
+  });
+  if (membership) {
+    if (membership.UserGroup?.group_code !== NOGRP_CODE) return null; // already in a real group — leave it alone
+    if (Number(membership.group_id) === Number(group.group_id)) return group; // already in this exact group
+  }
+
+  await mdl_UserGroupMembers.create({ group_id: group.group_id, user_id, createdBy: updatedBy });
+  await dropDefaultGroupMembership([user_id], group.group_id, { updatedBy });
+
+  return group;
+}
+
+module.exports = { NOGRP_CODE, getDefaultGroupId, enrollDefaultGroup, dropDefaultGroupMembership, reconcileDefaultGroup, switchFromNogrpByCode };

validators/auth.validator.js

@@ -28,6 +28,7 @@ const registerValidator = [
 const loginValidator = [
   body('email').isEmail().withMessage('Valid email is required.'),
   body('password').notEmpty().withMessage('Password is required.'),
+  body('group_code').optional().isString().trim(),
 ];
 
 const verifyOTPValidator = [