nick-doc/02 - Data Models/PurchaseRequest.md

---
title: PurchaseRequest
tags: [data-model, mongoose]
aliases: [Purchase Request, Buy Request, IPurchaseRequest]
---

# PurchaseRequest

> **Last updated:** 2026-05-30 — `budget.currency` locked to USDT; `categoryId` added to `IRequestTableItem`

The central buyer-side document. A `PurchaseRequest` captures what a buyer wants to acquire (physical product, digital product, service, or consultation), the budget envelope, urgency, delivery details, and the entire lifecycle from creation through payment, delivery, and completion. Sellers respond by attaching [[SellerOffer]] documents; the buyer accepts one, a [[Payment]] is opened, and delivery is verified by a 6-digit code.

> [!note] Source
> `backend/src/models/PurchaseRequest.ts:95` — schema definition
> `backend/src/models/PurchaseRequest.ts:387` — model export

## Schema

| Field | Type | Required | Default | Validation | Index | Description |
| --- | --- | --- | --- | --- | --- | --- |
| `buyerId` | ObjectId → [[User]] | yes | — | — | yes | Buyer that owns the request. |
| `title` | String | yes | — | trim, maxlength 200 | — | Short headline. |
| `description` | String | yes | — | trim, minlength 5 (frontend), maxlength 2000 | — | Long form description. Frontend enforces a 5-character minimum; the field is optional in the raw schema but the form will reject shorter values. |
| `categoryId` | ObjectId → [[Category]] | yes | — | — | yes | Category the request belongs to. |
| `productType` | String | no | `physical_product` | enum: `physical_product` / `digital_product` / `service` / `consultation` | yes | What kind of fulfilment is expected. |
| `productLink` | String | no | — | trim, must match `/^https?:\/\/.+/` | — | Reference URL for the desired product. |
| `size` | String | no | — | trim, maxlength 100 | — | Product size. |
| `color` | String | no | — | trim, maxlength 100 | — | Product color. |
| `brand` | String | no | — | trim, maxlength 100 | — | Brand preference. |
| `preferredSellerIds[]` | ObjectId → [[User]] | no | `[]` | — | — | Targeted sellers for a private request. |
| `quantity` | Number | no | `1` | min 1 | — | Unit count. |
| `budget.min` | Number | no | — | min 0 | — | Lower bound. |
| `budget.max` | Number | no | — | min 0 | — | Upper bound. |
| `budget.currency` | String | no | `USDT` | enum: `USDT` (escrow MVP — USD/EUR/IRR removed in commit 3aaa2fe) | — | Budget currency. |
| `urgency` | String | no | `medium` | enum: `low` / `medium` / `high` / `urgent` | yes | Buyer urgency. |
| `status` | String | no | `pending` | enum (13 values — see State Transitions below) | yes | Lifecycle state. |
| `isPublic` | Boolean | no | `true` | — | — | Public marketplace listing vs. private request. |
| `tags[]` | String[] | no | — | trim | — | Free-form tags. |
| `specifications[].key` | String | yes | — | trim | — | Spec key. |
| `specifications[].value` | String | yes | — | trim | — | Spec value. |
| `specifications[].label` | String | no | — | trim | — | Human label. |
| `deliveryInfo.deliveryType` | String | yes | `physical` | enum: `physical` / `online` | — | Delivery channel. |
| `deliveryInfo.address` | String | no | — | — | — | Physical address. |
| `deliveryInfo.preferredDate` | Date | no | — | — | — | Buyer's target date. |
| `deliveryInfo.notes` | String | no | — | — | — | Free-form notes. |
| `deliveryInfo.deliveryAddress.name` | String | no | — | — | — | Recipient name. |
| `deliveryInfo.deliveryAddress.phoneNumber` | String | no | — | — | — | Recipient phone. |
| `deliveryInfo.deliveryAddress.fullAddress` | String | no | — | — | — | Full address string. |
| `deliveryInfo.deliveryAddress.addressType` | String | no | — | — | — | e.g. Home / Office. |
| `deliveryInfo.email` | String | no | — | email regex | — | For digital delivery. |
| `deliveryInfo.sellerDeliveryInfo.estimatedDeliveryDate` | Date | no | — | — | — | Seller's ETA date. |
| `deliveryInfo.sellerDeliveryInfo.estimatedDeliveryTime` | String | no | — | — | — | Seller's ETA time. |
| `deliveryInfo.sellerDeliveryInfo.trackingNumber` | String | no | — | — | — | Carrier tracking. |
| `deliveryInfo.sellerDeliveryInfo.deliveryNotes` | String | no | — | — | — | Notes from seller. |
| `deliveryInfo.sellerDeliveryInfo.shippingMethod` | String | no | — | — | — | Method label. |
| `deliveryInfo.sellerDeliveryInfo.downloadLink` | String | no | — | — | — | Download URL for digital products. |
| `deliveryInfo.sellerDeliveryInfo.digitalFiles[]` | String[] | no | — | — | — | Digital file URLs. |
| `deliveryInfo.deliveryDateTime` | Date | no | — | — | — | Confirmed delivery datetime. |
| `deliveryInfo.deliveryDate` | Date | no | — | — | — | Confirmed delivery date. |
| `deliveryInfo.shippedAt` | Date | no | — | — | — | Timestamp of shipment. |
| `deliveryInfo.deliveryCode` | String | no | — | trim, length 6 | — | 6-digit handoff code. |
| `deliveryInfo.deliveryCodeGeneratedAt` | Date | no | — | — | — | When code was issued. |
| `deliveryInfo.deliveryCodeExpiresAt` | Date | no | — | — | — | When code expires. |
| `deliveryInfo.deliveryCodeUsed` | Boolean | no | `false` | — | — | Whether the code has been redeemed. |
| `deliveryInfo.deliveryCodeUsedAt` | Date | no | — | — | — | When it was redeemed. |
| `deliveryInfo.deliveryCodeUsedBy` | ObjectId → [[User]] | no | — | — | — | Seller that redeemed. |
| `deliveryInfo.deliveredAt` | Date | no | — | — | — | Final delivery timestamp. |
| `deliveryInfo.deliveryAttempts[].sellerId` | ObjectId → [[User]] | yes | — | — | — | Seller making the attempt. |
| `deliveryInfo.deliveryAttempts[].attemptedAt` | Date | no | `Date.now` | — | — | When attempted. |
| `deliveryInfo.deliveryAttempts[].success` | Boolean | yes | — | — | — | Whether it succeeded. |
| `deliveryInfo.deliveryAttempts[].code` | String | no | — | — | — | Code entered (only stored on success). |
| `serviceInfo.duration` | Number | no | — | min 0.5 | — | Hours, only for service/consultation. |
| `serviceInfo.sessionType` | String | no | — | enum: `online` / `in_person` / `hybrid` | — | Service session type. |
| `serviceInfo.location` | String | no | — | trim, maxlength 200 | — | Service location. |
| `serviceInfo.requirements[]` | String[] | no | — | trim | — | Pre-requisites. |
| `attachments[]` | String[] | no | — | — | — | Attached file URLs. |
| `offers[]` | ObjectId → [[SellerOffer]] | no | — | — | — | Offers received. |
| `selectedOfferId` | ObjectId → [[SellerOffer]] | no | `null` | — | — | Accepted offer. |
| `rating` | Number | no | `null` | min 1, max 5 | — | Buyer's post-delivery rating. |
| `feedback` | String | no | `null` | maxlength 1000 | — | Buyer's feedback text. |
| `deliveryConfirmed` | Boolean | no | `false` | — | — | Buyer confirmation flag. |
| `deliveryConfirmedAt` | Date | no | `null` | — | — | Confirmation timestamp. |
| `metadata.source` | String | no | `manual` | enum: `manual` / `template` / `api` | — | Where the request came from. |
| `metadata.templateId` | String | no | — | trim | — | Originating [[RequestTemplate]] id. |
| `metadata.version` | String | no | — | trim | — | Schema version. |
| `createdAt` | Date | auto | — | — | yes (desc) | Mongoose timestamp. |
| `updatedAt` | Date | auto | — | — | — | Mongoose timestamp. |

### Status enum — all valid values

`pending_payment` · `pending` · `active` · `received_offers` · `in_negotiation` · `payment` · `processing` · `delivery` · `delivered` · `confirming` · `completed` · `seller_paid` · `cancelled`

**Note:** `finalized` and `archived` are **not** valid status values and do not appear in the `IPurchaseRequest` frontend type or the Mongoose schema enum. Using either would cause a validation error.

## Virtuals

None defined.

## Indexes

Single-field — `backend/src/models/PurchaseRequest.ts:376-381`:

- `{ buyerId: 1 }`
- `{ categoryId: 1 }`
- `{ productType: 1 }`
- `{ status: 1 }`
- `{ createdAt: -1 }`
- `{ urgency: 1 }`

Compound — `backend/src/models/PurchaseRequest.ts:384-385`:

- `{ productType: 1, status: 1 }`
- `{ categoryId: 1, productType: 1 }`

## Pre/Post Hooks

None declared at the schema level.

## Instance Methods

None defined.

## Static Methods

None defined.

## Relationships

- **References**: [[User]] (`buyerId`, `preferredSellerIds[]`, `deliveryInfo.deliveryCodeUsedBy`, `deliveryInfo.deliveryAttempts[].sellerId`), [[Category]] (`categoryId`), [[SellerOffer]] (`offers[]`, `selectedOfferId`).
- **Referenced by**: [[SellerOffer]] (`purchaseRequestId`), [[Payment]] (`purchaseRequestId`), [[Dispute]] (`purchaseRequestId`), [[Chat]] (`relatedTo.id` when `relatedTo.type === 'PurchaseRequest'`), [[Review]] (`purchaseRequestId`).

## State Transitions

```mermaid
stateDiagram-v2
    [*] --> pending_payment
    [*] --> pending
    pending_payment --> pending : payment confirmed
    pending --> active : published
    active --> received_offers : first offer
    received_offers --> in_negotiation : buyer engages
    in_negotiation --> payment : offer accepted
    payment --> processing : payment captured
    processing --> delivery : shipped
    delivery --> delivered : handed over
    delivered --> confirming : code redeemed
    confirming --> completed : buyer confirms
    completed --> seller_paid : payout released
    pending --> cancelled
    active --> cancelled
    received_offers --> cancelled
    in_negotiation --> cancelled
    completed --> [*]
    seller_paid --> [*]
    cancelled --> [*]
```

## Common Queries

```ts
// Buyer's open requests
PurchaseRequest.find({ buyerId, status: { $in: ['pending', 'active', 'received_offers'] } });

// Public marketplace feed
PurchaseRequest.find({ isPublic: true, status: 'active' }).sort({ createdAt: -1 });

// Sellers' eligible queue
PurchaseRequest.find({ productType, status: 'active', categoryId });

// Populate offers
PurchaseRequest.findById(id).populate('offers').populate('selectedOfferId');

// Redeem delivery code
PurchaseRequest.findOneAndUpdate(
  { _id: id, 'deliveryInfo.deliveryCode': code, 'deliveryInfo.deliveryCodeUsed': false },
  { $set: { 'deliveryInfo.deliveryCodeUsed': true, 'deliveryInfo.deliveryCodeUsedAt': new Date() } }
);
```

Related: [[SellerOffer]], [[Payment]], [[Chat]], [[Dispute]], [[Review]], [[RequestTemplate]], [[Category]].