Giuliano Silvestro
33e604b84a
ArcadiaCloud.Quoting.quote/3 — turns a plan version + addons + usage into
itemized pricing. The same function serves both provisioning-time
projection (with projected usage) and month-end invoicing (with actual
metered usage), so the two can never disagree on the math.
A quote has:
- recurring — plan base + addon lines (fixed monthly)
- first_invoice — recurring prorated to a mid-month start date
(fraction = days_remaining / days_in_month)
- overage — usage beyond plan+addon allowance, billed in arrears
- all_in_monthly_cents
Overage computation: per plan_item, effective allowance =
included_qty + summed addon qty for the same resource_kind. Overage =
max(0, used - allowance), clamped by hard_cap_qty. overage_price_cents
is per overage_unit; a @unit_factor map converts base-unit usage to
overage units (e.g. 1k_tokens divides token counts by 1000).
Lines are uniform maps (kind/resource_kind/description/qty/unit/
unit_price_cents/amount_cents/meta) — the invoice rollup chunk will
persist them near-verbatim as invoice_lines.
addon_fields/1 accepts either a catalog Addon (projection from the
catalog) or a SubscriptionAddon (actual, using snapshotted price/qty).
API: POST /api/v1/quote { plan_code, addons[], projected_usage{},
starts_on } — tenant-facing pre-provisioning price preview.
Smoke verified against seeded plans:
- Studio bare: $50/mo, no overage.
- Studio + storage_50gb, mid-month start 2026-05-20, projected usage:
recurring $57.50; first invoice prorated 12/31 -> $22.25; overage
LLM 500k-token $5.00 + Spaces 50GB $1.00 (the addon correctly lifted
the Spaces allowance 100->150 GB); droplet_hours exactly at allowance
produced no line; all-in $63.50/mo.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
41 lines
1.1 KiB
Elixir
41 lines
1.1 KiB
Elixir
defmodule ArcadiaCloudWeb.Router do
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use ArcadiaCloudWeb, :router
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pipeline :api do
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plug :accepts, ["json"]
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end
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pipeline :authed do
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plug ArcadiaCloudWeb.Plugs.RequireAuth
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end
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scope "/api", ArcadiaCloudWeb do
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pipe_through :api
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get "/health", HealthController, :show
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end
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scope "/api/v1", ArcadiaCloudWeb do
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pipe_through [:api, :authed]
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get "/inventory", InventoryController, :index
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get "/billing/balance", BillingController, :balance
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get "/billing/cost-lines", BillingController, :cost_lines
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get "/drift", DriftController, :index
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post "/drift/:id/accept", DriftController, :accept
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get "/catalog/plans", CatalogController, :plans
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get "/catalog/addons", CatalogController, :addons
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post "/quote", QuoteController, :create
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get "/deployments", DeploymentController, :index
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post "/deployments", DeploymentController, :create
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get "/deployments/:id", DeploymentController, :show
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post "/deployments/:id/transition", DeploymentController, :transition
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post "/deployments/:id/subscribe", DeploymentController, :subscribe
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end
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end
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