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commerce

package
v0.9.0 Latest Latest
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 Go to latest Published: Oct 19, 2026 License: AGPL-3.0 Imports: 51 Imported by: 0

Documentation

Overview

Package commerce sells access to MCP servers: products → Stripe Checkout → orders → customers → entitlements → provisioning on billing servers over the signed mcp-billing/v1 protocol (spec §4.6, docs/COMMERCE.md).

Index

Constants

View Source 
const (
	ProductProvisioning = "provisioning"
	ProductService      = "service"
	ProductDigital      = "digital"
)

Product is a provisioning plan, service or private digital download. PriceMinor is in the currency's minor unit (fils for AED). SEO uses the seo.FromMap keys.

View Source 
const (
	OrderPending      = "pending"
	OrderPaid         = "paid"
	OrderProvisioning = "provisioning"
	OrderActive       = "active"
	OrderFailed       = "failed"
	OrderRefunded     = "refunded"
	OrderCancelled    = "cancelled"
)

Order statuses.

View Source 
const (
	EntitlementPending   = "pending"
	EntitlementActive    = "active"
	EntitlementSuspended = "suspended"
	EntitlementExpired   = "expired"
	EntitlementFailed    = "failed"
)

Entitlement statuses.

View Source 
const (
	ServerUnknown = "unknown"
	ServerOK      = "ok"
	ServerError   = "error"
)

Server statuses.

View Source 
const (
	SettingCurrency      = "commerce.currency"
	SettingStripeSecret  = "commerce.stripe_secret_key"     // db.Encrypt, AAD = key
	SettingWebhookSecret = "commerce.stripe_webhook_secret" // db.Encrypt, AAD = key

)

Setting keys.

View Source 
const (
	PermManage     = "commerce.manage"
	PermViewOrders = "commerce.view_orders"
)

Permissions.

View Source 
const (
	JobProvision            = "commerce.provision"
	JobSuspend              = "commerce.suspend"
	JobMagicMail            = "commerce.magic_mail"
	CronExpire              = "commerce.expire"
	HookOrderPaid           = "commerce.order.paid"
	HookEntitlementActivate = "commerce.entitlement.activated"
)

Job kinds and hook names.

Variables

View Source 
var (
	ErrNotFound            = errors.New("commerce: not found")
	ErrStripeNotConfigured = errors.New("commerce: Stripe is not configured")
	ErrInvalidSignature    = errors.New("commerce: invalid Stripe webhook signature")
	ErrNotActive           = errors.New("commerce: entitlement is not active")
	ErrNoServer            = errors.New("commerce: entitlement has no reachable billing server")
	ErrPeriodEnded         = errors.New("commerce: the entitlement period has ended")
)

Errors returned by the service.

Functions

func FormatPrice 

func FormatPrice(minor int64, currency string) string

FormatPrice renders minor units as a major-unit decimal string ("12.50").

func ParsePrice 

func ParsePrice(s, currency string) (int64, error)

ParsePrice converts a major-unit amount ("12.5", "12,50") to minor units of currency. It rejects negatives and more decimals than the currency has.

func Slugify 

func Slugify(s string) string

Slugify lowercases s and joins its letter/digit runs with "-" (Arabic letters are kept).

Types

type AccountSettings 

type AccountSettings struct {
	RegistrationEnabled bool `json:"registration_enabled"`
}

AccountSettings controls native customer registration only. Registration does not grant paid access or claim verified ownership of an email address.

type ActionResponse 

type ActionResponse struct {
	Entitlement *Entitlement `json:"entitlement"`
}

ActionResponse is returned by entitlement actions.

type Cart 

type Cart struct {
	Lines      []CartLine `json:"lines"`
	TotalMinor int64      `json:"total_minor"`
	Currency   string     `json:"currency"`
	Key        string     `json:"key"`
}

type CartCheckout 

type CartCheckout struct {
	Intake         map[string]map[string]string `json:"intake,omitempty"`
	Items          []CartItem                   `json:"items"`
	Email          string                       `json:"email"`
	Name           string                       `json:"name"`
	Notes          string                       `json:"notes"`
	IdempotencyKey string                       `json:"idempotency_key"`
}

type CartItem 

type CartItem struct {
	ProductID string `json:"product_id"`
	Quantity  int    `json:"quantity"`
}

type CartLine 

type CartLine struct {
	Product    Product `json:"product"`
	Quantity   int     `json:"quantity"`
	TotalMinor int64   `json:"total_minor"`
}

type Catalog 

type Catalog struct {
	Product map[string]any  `json:"product,omitempty"`
	Plans   []Plan          `json:"plans"`
	Tools   []any           `json:"tools,omitempty"`
	Raw     json.RawMessage `json:"raw,omitempty"`
}

Catalog is a billing server's GET /catalog data. Raw keeps the full payload (tools, product description…).

type DeleteResponse 

type DeleteResponse struct {
	ID      string `json:"id"`
	Deleted bool   `json:"deleted"`
}

DeleteResponse is returned by DELETE operations.

type Entitlement 

type Entitlement struct {
	ID          string         `json:"id"`
	CustomerID  string         `json:"customer_id"`
	Email       string         `json:"email"`
	OrderID     string         `json:"order_id"`
	OrderNumber string         `json:"order_number"`
	ProductID   string         `json:"product_id"`
	ProductName string         `json:"product_name"`
	ServerID    string         `json:"server_id"`
	ServerName  string         `json:"server_name"`
	PlanCode    string         `json:"plan_code"`
	ExternalID  string         `json:"external_id"`
	Status      string         `json:"status"`
	StartsAt    string         `json:"starts_at"`
	EndsAt      string         `json:"ends_at"`
	LastSyncAt  string         `json:"last_sync_at"`
	Meta        map[string]any `json:"meta"`
	CreatedAt   string         `json:"created_at"`
}

Entitlement is a customer's access to a plan on a billing server, created by exactly one order.

type IntakeField 

type IntakeField struct {
	Key       string `json:"key"`
	Label     string `json:"label"`
	Required  bool   `json:"required"`
	MaxLength int    `json:"max_length"`
}

type ListQuery 

type ListQuery struct {
	Search, Status string
	CustomerID     string
	Page, PerPage  int
}

ListQuery filters Orders and Entitlements. Search matches the email or order number; Status filters exactly. Page/PerPage default 1/20 (max 100).

type MCBBError 

type MCBBError struct {
	Status  int
	Message string
}

MCBBError is a failed billing-server call. Status is the HTTP status (0 for transport failures). Retryable reports transient failures (transport, 408, 429, 5xx), mirroring the PHP client's retry rule.

func (*MCBBError) Error 

func (e *MCBBError) Error() string

func (*MCBBError) Retryable 

func (e *MCBBError) Retryable() bool

Retryable reports whether the call may succeed when retried.

type Module 

type Module struct {
	// contains filtered or unexported fields
}

Module is the commerce kernel.Module.

func New 

func New() *Module

New returns the commerce module.

func (*Module) Catalogs 

func (*Module) Catalogs() fs.FS

Catalogs implements kernel.CatalogProvider.

func (*Module) Migrations 

func (*Module) Migrations() fs.FS

Migrations implements kernel.Module.

func (*Module) Name 

func (*Module) Name() string

Name implements kernel.Module.

func (*Module) Register 

func (m *Module) Register(d *kernel.Deps) error

Register publishes kernel.ServiceCommerce and wires jobs, theme kinds and funcs, public routes, the Stripe webhook, admin screens, API operations and health checks.

type Order 

type Order struct {
	ReceiptStatus       string         `json:"receipt_status,omitempty"`
	ReceiptError        string         `json:"receipt_error,omitempty"`
	ReceiptSentAt       string         `json:"receipt_sent_at,omitempty"`
	RequestStatus       string         `json:"request_status"`
	FulfillmentNote     string         `json:"fulfillment_note"`
	ID                  string         `json:"id"`
	Number              string         `json:"number"`
	CustomerID          string         `json:"customer_id"`
	Email               string         `json:"email"`
	Status              string         `json:"status"`
	Currency            string         `json:"currency"`
	TotalMinor          int64          `json:"total_minor"`
	ProductID           string         `json:"product_id"`
	ProductName         string         `json:"product_name"`
	ProductSnapshot     map[string]any `json:"product_snapshot"`
	StripeSessionID     string         `json:"stripe_session_id"`
	StripePaymentIntent string         `json:"stripe_payment_intent"`
	PaidAt              string         `json:"paid_at"`
	CreatedAt           string         `json:"created_at"`
	UpdatedAt           string         `json:"updated_at"`
}

Order freezes a single Stripe product or the line items of a manual request.

type OrderItem 

type OrderItem struct {
	Intake       map[string]string `json:"intake,omitempty"`
	IntakeSchema []IntakeField     `json:"intake_schema,omitempty"`
	ID           string            `json:"id"`
	ProductID    string            `json:"product_id"`
	Quantity     int               `json:"quantity"`
	UnitMinor    int64             `json:"unit_minor"`
	ProductName  string            `json:"product_name"`
	Kind         string            `json:"kind"`
	DownloadURL  string            `json:"download_url,omitempty"`
}

type Plan 

type Plan struct {
	Code   string `json:"code"`
	Name   string `json:"name"`
	NameAr string `json:"name_ar,omitempty"`
}

Plan is one plan advertised by a billing server's GET /catalog.

type Product 

type Product struct {
	Intake           []IntakeField  `json:"intake,omitempty"`
	Kind             string         `json:"kind"`
	DigitalFile      string         `json:"digital_file,omitempty"`
	DownloadDays     int            `json:"download_days"`
	ID               string         `json:"id"`
	Slug             string         `json:"slug"`
	Name             string         `json:"name"`
	Description      string         `json:"description"`
	ShortDescription string         `json:"short_description"`
	PriceMinor       int64          `json:"price_minor"`
	Currency         string         `json:"currency"`
	Active           bool           `json:"active"`
	GroupSlug        string         `json:"group_slug"`
	GroupName        string         `json:"group_name"`
	PlanCode         string         `json:"plan_code"`
	ServerID         string         `json:"server_id"`
	AccessMonths     int            `json:"access_months"`
	Features         []string       `json:"features"`
	ImageMediaID     string         `json:"image_media_id"`
	Sort             int            `json:"sort"`
	SEO              map[string]any `json:"seo"`
	WPProductID      string         `json:"wp_product_id"`
}

type ProductGroup 

type ProductGroup struct {
	Slug, Name string
	Products   []Product
}

ProductGroup is a shop section: active products sharing GroupSlug.

type RequestDetail 

type RequestDetail struct {
	Order *Order      `json:"order"`
	Items []OrderItem `json:"items"`
}

type RequestUpdate 

type RequestUpdate struct {
	Status string `json:"status"`
	Note   string `json:"note"`
}

type Server 

type Server struct {
	ID          string `json:"id"`
	Name        string `json:"name"`
	BaseURL     string `json:"base_url"`
	ClientID    string `json:"client_id"`
	Secret      string `json:"secret,omitempty"`
	SecretSet   bool   `json:"secret_set"`
	Protocol    string `json:"protocol"`
	Status      string `json:"status"`
	LastCheckAt string `json:"last_check_at"`
	LastError   string `json:"last_error"`
}

Server is a billing server speaking the mcp-billing/v1 protocol. Secret is write-only: SaveServer encrypts it when non-empty (empty keeps the stored secret) and reads never return it; SecretSet reports whether one exists.

type ServerTestResponse 

type ServerTestResponse struct {
	OK      bool    `json:"ok"`
	Error   string  `json:"error,omitempty"`
	Catalog Catalog `json:"catalog"`
}

ServerTestResponse is returned by POST /v1/commerce/servers/{id}/test.

type Service 

type Service interface {
	Products(ctx context.Context, activeOnly bool) ([]Product, error)
	Product(ctx context.Context, slug string) (*Product, error)
	SaveProduct(ctx context.Context, p Product) (*Product, error)
	DeleteProduct(ctx context.Context, id string) error

	UpsertFromWP(ctx context.Context, wp WPProduct) (*Product, error)
	// ReplaceMediaRef re-points every product image from media oldID to
	// newID (the migrator replaced a re-imported file).
	ReplaceMediaRef(ctx context.Context, oldID, newID string) error

	SubmitCart(ctx context.Context, request CartCheckout) (*Order, error)
	UpdateRequest(ctx context.Context, id string, request RequestUpdate) (*Order, error)
	StartCheckout(ctx context.Context, productID, email string) (redirectURL string, orderID string, err error)
	HandleStripeEvent(ctx context.Context, payload []byte, sigHeader string) error

	Orders(ctx context.Context, q ListQuery) ([]Order, int, error)
	Entitlements(ctx context.Context, q ListQuery) ([]Entitlement, int, error)
	CustomerEntitlements(ctx context.Context, userID string) ([]Entitlement, error)

	Suspend(ctx context.Context, entitlementID string) error
	Resume(ctx context.Context, entitlementID string) error
	Reconcile(ctx context.Context, entitlementID string) error
	LoginLink(ctx context.Context, entitlementID string) (string, error)

	Servers(ctx context.Context) ([]Server, error)
	SaveServer(ctx context.Context, s Server) error
	TestServer(ctx context.Context, id string) (Catalog, error)
}

Service is the commerce API published as kernel.ServiceCommerce.

type ValidationError 

type ValidationError struct{ Fields map[string]string }

ValidationError carries per-field i18n keys (implements api.FieldErrorer).

func (*ValidationError) Error 

func (e *ValidationError) Error() string

func (*ValidationError) FieldErrors 

func (e *ValidationError) FieldErrors() map[string]string

FieldErrors implements api.FieldErrorer.

type WPProduct 

type WPProduct struct {
	ID                                        int
	Slug, Name, Description, ShortDescription string
	PriceMinor                                int64
	Currency                                  string
	Categories                                []string
	ImageURLs                                 []string
	Meta                                      map[string]string
}

WPProduct is a WooCommerce catalog product as read by the migrator (its adapter maps an identical struct 1:1). Meta holds WooCommerce meta_data (e.g. _mcbb_server_id, _mcbb_plan_code, _mcbb_months).

Source Files

View all Source files

Directories

Path Synopsis
Package fakebilling is an in-memory billing server implementing the mcp-billing/v1 protocol (see docs/COMMERCE.md) for tests and local e2e runs: signature verification (same scheme as the real servers), Idempotency-Key replay on mutations, and failure injection.
 Package fakebilling is an in-memory billing server implementing the mcp-billing/v1 protocol (see docs/COMMERCE.md) for tests and local e2e runs: signature verification (same scheme as the real servers), Idempotency-Key replay on mutations, and failure injection.

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