assets and tier plans revamp

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

models/tiers/plan_lessons.mdl.js

@@ -0,0 +1,24 @@
+/***********************************************************************************************************************************************************************
+ * File Name: plan_lessons.mdl.js
+ * Type of Program: Model
+ * Description: Junction table — links standalone Lessons to a specific tier plan.
+ *              UNIQUE on lesson_id enforces one lesson belongs to one plan only.
+ *              Mirrors plan_courses.mdl.js — bundling/display only, not an
+ *              access-control mechanism (see canAccessLesson).
+ * Author: Kenneth Obsequio (@lash0000)
+ * Date Created: Aug. 1, 2026
+ ***********************************************************************************************************************************************************************/
+const { DataTypes } = require('sequelize');
+const sequelize = require('../../config/db.config');
+
+const mdl_PlanLessons = sequelize.define('PlanLesson', {
+  id:        { type: DataTypes.BIGINT, primaryKey: true, autoIncrement: true },
+  plan_id:   { type: DataTypes.BIGINT, allowNull: false },
+  lesson_id: { type: DataTypes.BIGINT, allowNull: false },
+}, {
+  tableName:  'plan_lessons',
+  timestamps: true,
+  paranoid:   false,
+});
+
+module.exports = mdl_PlanLessons;

models/tiers/plan_units.mdl.js

@@ -0,0 +1,24 @@
+/***********************************************************************************************************************************************************************
+ * File Name: plan_units.mdl.js
+ * Type of Program: Model
+ * Description: Junction table — links standalone Units to a specific tier plan.
+ *              UNIQUE on unit_id enforces one unit belongs to one plan only.
+ *              Mirrors plan_courses.mdl.js — bundling/display only, not an
+ *              access-control mechanism (see canAccessUnit).
+ * Author: Kenneth Obsequio (@lash0000)
+ * Date Created: Aug. 1, 2026
+ ***********************************************************************************************************************************************************************/
+const { DataTypes } = require('sequelize');
+const sequelize = require('../../config/db.config');
+
+const mdl_PlanUnits = sequelize.define('PlanUnit', {
+  id:      { type: DataTypes.BIGINT, primaryKey: true, autoIncrement: true },
+  plan_id: { type: DataTypes.BIGINT, allowNull: false },
+  unit_id: { type: DataTypes.BIGINT, allowNull: false },
+}, {
+  tableName:  'plan_units',
+  timestamps: true,
+  paranoid:   false,
+});
+
+module.exports = mdl_PlanUnits;

models/tiers/tier.associations.js

@@ -4,10 +4,14 @@ const mdl_TierPlans      = require('./tier_plans.mdl');
 const mdl_UserTiers      = require('./user_tiers.mdl');
 const mdl_Payments       = require('./payments.mdl');
 const mdl_PlanCourses    = require('./plan_courses.mdl');
+const mdl_PlanUnits      = require('./plan_units.mdl');
+const mdl_PlanLessons    = require('./plan_lessons.mdl');
 const mdl_PlanPolicies   = require('./plan_policies.mdl');
 const mdl_SystemBadges   = require('../system_badges/system_badges.mdl');
 const Asset              = require('../assets/assets.mdl');
 const { Course }         = require('../courses/courses.mdl');
+const Unit                = require('../courses/units.mdl');
+const Lesson               = require('../courses/lessons.mdl');
 
 // ─── TierCategory ─────────────────────────────────────────────────────────────
 mdl_TierCategories.belongsTo(Asset, { foreignKey: 'badge_asset_id', as: 'badgeAsset' });
@@ -45,6 +49,42 @@ mdl_PlanCourses.belongsTo(Course,        { foreignKey: 'course_id', as: 'course'
 Course.hasOne(mdl_PlanCourses,           { as: 'planCourse',        foreignKey: 'course_id' });
 mdl_TierPlans.hasMany(mdl_PlanCourses,   { as: 'planCourses',       foreignKey: 'plan_id' });
 
+// ─── Plan ↔ Units ─────────────────────────────────────────────────────────────
+mdl_TierPlans.belongsToMany(Unit, {
+  through:    mdl_PlanUnits,
+  foreignKey: 'plan_id',
+  otherKey:   'unit_id',
+  as:         'units',
+});
+Unit.belongsToMany(mdl_TierPlans, {
+  through:    mdl_PlanUnits,
+  foreignKey: 'unit_id',
+  otherKey:   'plan_id',
+  as:         'plans',
+});
+mdl_PlanUnits.belongsTo(mdl_TierPlans, { foreignKey: 'plan_id', as: 'plan' });
+mdl_PlanUnits.belongsTo(Unit,          { foreignKey: 'unit_id', as: 'unit' });
+Unit.hasOne(mdl_PlanUnits,             { as: 'planUnit',  foreignKey: 'unit_id' });
+mdl_TierPlans.hasMany(mdl_PlanUnits,   { as: 'planUnits', foreignKey: 'plan_id' });
+
+// ─── Plan ↔ Lessons ───────────────────────────────────────────────────────────
+mdl_TierPlans.belongsToMany(Lesson, {
+  through:    mdl_PlanLessons,
+  foreignKey: 'plan_id',
+  otherKey:   'lesson_id',
+  as:         'lessons',
+});
+Lesson.belongsToMany(mdl_TierPlans, {
+  through:    mdl_PlanLessons,
+  foreignKey: 'lesson_id',
+  otherKey:   'plan_id',
+  as:         'plans',
+});
+mdl_PlanLessons.belongsTo(mdl_TierPlans, { foreignKey: 'plan_id',   as: 'plan' });
+mdl_PlanLessons.belongsTo(Lesson,        { foreignKey: 'lesson_id', as: 'lesson' });
+Lesson.hasOne(mdl_PlanLessons,           { as: 'planLesson', foreignKey: 'lesson_id' });
+mdl_TierPlans.hasMany(mdl_PlanLessons,   { as: 'planLessons', foreignKey: 'plan_id' });
+
 // ─── UserTier → Plan ──────────────────────────────────────────────────────────
 mdl_UserTiers.belongsTo(mdl_TierPlans, { foreignKey: 'plan_id', as: 'plan' });
 mdl_TierPlans.hasMany(mdl_UserTiers,   { foreignKey: 'plan_id', as: 'userTiers' });
@@ -62,6 +102,8 @@ module.exports = {
   mdl_UserTiers,
   mdl_Payments,
   mdl_PlanCourses,
+  mdl_PlanUnits,
+  mdl_PlanLessons,
   mdl_PlanPolicies,
   mdl_SystemBadges,
 };