Migration to create ImportantNotice table

To support the dismissal feature of ImportantNotices, we need to store notices in the db ratehr than calcualte them on the fly.

Author: murugapl

db/migrate/20251017133425_create_important_notices.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+class CreateImportantNotices < ActiveRecord::Migration[8.0]
+  def change
+    create_table :important_notices do |t|
+      t.references :patient, foreign_key: true, null: false
+      t.references :team, foreign_key: true, null: false
+      t.references :vaccination_record, foreign_key: true, null: true
+      t.references :dismissed_by_user,
+                   foreign_key: {
+                     to_table: :users
+                   },
+                   null: true
+      t.integer :type, null: false
+      t.datetime :recorded_at, null: false
+      t.datetime :dismissed_at
+
+      t.timestamps
+    end
+
+    add_index :important_notices,
+              %i[patient_id type recorded_at team_id],
+              unique: true,
+              name: "index_notices_on_patient_and_type_and_recorded_at_and_team"
+  end
+end

db/schema.rb

@@ -387,6 +387,23 @@
     t.index ["immunisation_import_id", "vaccination_record_id"], name: "idx_on_immunisation_import_id_vaccination_record_id_588e859772", unique: true
   end
 
+  create_table "important_notices", force: :cascade do |t|
+    t.datetime "created_at", null: false
+    t.datetime "dismissed_at"
+    t.bigint "dismissed_by_user_id"
+    t.bigint "patient_id", null: false
+    t.datetime "recorded_at", null: false
+    t.bigint "team_id", null: false
+    t.integer "type", null: false
+    t.datetime "updated_at", null: false
+    t.bigint "vaccination_record_id"
+    t.index ["dismissed_by_user_id"], name: "index_important_notices_on_dismissed_by_user_id"
+    t.index ["patient_id", "type", "recorded_at", "team_id"], name: "index_notices_on_patient_and_type_and_recorded_at_and_team", unique: true
+    t.index ["patient_id"], name: "index_important_notices_on_patient_id"
+    t.index ["team_id"], name: "index_important_notices_on_team_id"
+    t.index ["vaccination_record_id"], name: "index_important_notices_on_vaccination_record_id"
+  end
+
   create_table "local_authorities", id: false, force: :cascade do |t|
     t.datetime "created_at", null: false
     t.date "end_date"
@@ -1013,6 +1030,10 @@
   add_foreign_key "immunisation_imports_sessions", "sessions", on_delete: :cascade
   add_foreign_key "immunisation_imports_vaccination_records", "immunisation_imports", on_delete: :cascade
   add_foreign_key "immunisation_imports_vaccination_records", "vaccination_records", on_delete: :cascade
+  add_foreign_key "important_notices", "patients"
+  add_foreign_key "important_notices", "teams"
+  add_foreign_key "important_notices", "users", column: "dismissed_by_user_id"
+  add_foreign_key "important_notices", "vaccination_records"
   add_foreign_key "location_programme_year_groups", "location_year_groups", on_delete: :cascade
   add_foreign_key "location_programme_year_groups", "programmes", on_delete: :cascade
   add_foreign_key "location_year_groups", "locations", on_delete: :cascade