feat(db): add children and emergency_contacts tables with related fields

docs/schema-overview.md

@@ -62,11 +62,60 @@ erDiagram
         timestamp updated_at
     }
 
+    children {
+        uuid id PK
+        uuid parent_id FK
+        gender gender
+        text first_name
+        text last_name
+        date dob
+        text allergies
+        text medical_conditions
+        text medications
+        timestamp created_at
+        timestamp updated_at
+    }
+
+    emergency_contacts {
+        uuid id PK
+        uuid child_id FK
+        text full_name
+        text email_address
+        text phone_number
+        text relationship
+        timestamp created_at
+        timestamp updated_at
+    }
+
+    extra_questions {
+        uuid id PK
+        uuid service_id FK
+        extra_question_type type
+        text prompt
+        jsonb options
+        timestamp created_at
+        timestamp updated_at
+    }
+
+    extra_question_answers {
+        uuid id PK
+        uuid extra_question_id FK
+        uuid child_id FK
+        text answer "text[]"
+        timestamp created_at
+        timestamp updated_at
+    }
+
     profiles ||--o{ service_bookings : "books"
     services ||--o{ service_bookings : "booked via"
     profiles ||--o{ coaching_sessions : "coaches"
     profiles ||--o{ coaching_sessions : "attends"
     services ||--o{ coaching_sessions : "fulfilled by"
+    profiles ||--o{ children : "parent of"
+    children ||--o{ emergency_contacts : "has"
+    services ||--o{ extra_questions : "defines"
+    extra_questions ||--o{ extra_question_answers : "answered via"
+    children ||--o{ extra_question_answers : "submits"
 ```
 
 ## Enums
@@ -78,3 +127,5 @@ erDiagram
 | `booking_status` | `pending`, `confirmed`, `cancelled` |
 | `webinar_tier` | `free`, `premium` |
 | `session_status` | `pending`, `confirmed`, `cancelled`, `completed` |
+| `gender` | `male`, `female`, `prefer_not_to_say` |
+| `extra_question_type` | `text`, `multiple_choices`, `checkboxes`, `user_agreement` |

lib/db/schema.ts

@@ -12,6 +12,12 @@ import {
 
 export type ProgramSlot = { dayOfWeek: number; time: string };
 
+export type ExtraQuestionOption = {
+   id: string;
+   title: string;
+   description?: string;
+};
+
 export const roleEnum = pgEnum("role", ["user", "admin", "coach"]);
 export const serviceTypeEnum = pgEnum("service_type", [
    "private_lessons",
@@ -35,6 +41,13 @@ export const serviceStatusEnum = pgEnum("service_status", [
    "deleted",
    "disabled",
 ]);
+export const genderEnum = pgEnum("gender", ["male", "female", "prefer_not_to_say"]);
+export const extraQuestionTypeEnum = pgEnum("extra_question_type", [
+   "text",
+   "multiple_choices",
+   "checkboxes",
+   "user_agreement",
+]);
 
 export const profiles = pgTable("profiles", {
    id: uuid("id").primaryKey(),
@@ -136,3 +149,57 @@ export const purchases = pgTable("purchases", {
    createdAt: timestamp("created_at").defaultNow().notNull(),
    updatedAt: timestamp("updated_at").defaultNow().notNull(),
 });
+
+export const children = pgTable("children", {
+   id: uuid("id").primaryKey().defaultRandom(),
+   parentId: uuid("parent_id")
+      .references(() => profiles.id, { onDelete: "cascade" })
+      .notNull(),
+   gender: genderEnum("gender").notNull(),
+   firstName: text("first_name").notNull(),
+   lastName: text("last_name").notNull(),
+   dob: date("dob", { mode: "string" }).notNull(),
+   allergies: text("allergies"),
+   medicalConditions: text("medical_conditions"),
+   medications: text("medications"),
+   createdAt: timestamp("created_at").defaultNow().notNull(),
+   updatedAt: timestamp("updated_at").defaultNow().notNull(),
+});
+
+export const emergencyContacts = pgTable("emergency_contacts", {
+   id: uuid("id").primaryKey().defaultRandom(),
+   childId: uuid("child_id")
+      .references(() => children.id, { onDelete: "cascade" })
+      .notNull(),
+   fullName: text("full_name").notNull(),
+   emailAddress: text("email_address").notNull(),
+   phoneNumber: text("phone_number").notNull(),
+   relationship: text("relationship").notNull(),
+   createdAt: timestamp("created_at").defaultNow().notNull(),
+   updatedAt: timestamp("updated_at").defaultNow().notNull(),
+});
+
+export const extraQuestions = pgTable("extra_questions", {
+   id: uuid("id").primaryKey().defaultRandom(),
+   serviceId: uuid("service_id")
+      .references(() => services.id, { onDelete: "cascade" })
+      .notNull(),
+   type: extraQuestionTypeEnum("type").notNull(),
+   prompt: text("prompt").notNull(),
+   options: jsonb("options").$type<ExtraQuestionOption[]>(),
+   createdAt: timestamp("created_at").defaultNow().notNull(),
+   updatedAt: timestamp("updated_at").defaultNow().notNull(),
+});
+
+export const extraQuestionAnswers = pgTable("extra_question_answers", {
+   id: uuid("id").primaryKey().defaultRandom(),
+   extraQuestionId: uuid("extra_question_id")
+      .references(() => extraQuestions.id, { onDelete: "cascade" })
+      .notNull(),
+   childId: uuid("child_id")
+      .references(() => children.id, { onDelete: "cascade" })
+      .notNull(),
+   answer: text("answer").array().notNull(),
+   createdAt: timestamp("created_at").defaultNow().notNull(),
+   updatedAt: timestamp("updated_at").defaultNow().notNull(),
+});