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zeekay
1943f1c093
Multi-tenant commerce and billing: orders, subscriptions, invoices, plans, usage metering and a credit ledger. One Go binary. MIT OR Apache-2.0. Claude-Session: https://claude.ai/code/session_01SAtaDFm8VDiWrhYHNNtxMw
31 lines
1007 B
Go
31 lines
1007 B
Go
package draftorder
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import (
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"github.com/hanzoai/commerce/datastore"
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"github.com/hanzoai/commerce/models/draftorderitem"
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"github.com/hanzoai/commerce/models/types/currency"
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)
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// Items returns the line items of a draft order, scoped to db's namespace.
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// The lines are facts; the draft's total is projected from them (TotalCents).
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func Items(db *datastore.Datastore, draftOrderId string) ([]*draftorderitem.DraftOrderItem, error) {
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items := make([]*draftorderitem.DraftOrderItem, 0, 16)
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if _, err := draftorderitem.Query(db).
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Filter("DraftOrderId=", draftOrderId).
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GetAll(&items); err != nil {
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return nil, err
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}
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return items, nil
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}
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// TotalCents projects the draft order total from its line items:
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// Σ(unitPrice × quantity). It is derived, never stored, so add/remove of a line
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// can never leave a stale total behind.
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func TotalCents(items []*draftorderitem.DraftOrderItem) currency.Cents {
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var total currency.Cents
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for _, i := range items {
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total += i.TotalCents()
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}
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return total
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}
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