import * as Effect from "effect/Effect";
import type { PrismaManagementClient } from "../Client.ts";

/** Prove that a deployment belongs to an App before mutating or deleting it. */
export const ensureDeploymentMembership = Effect.fn(function* (
  client: PrismaManagementClient,
  appId: string,
  deployment: { id: string; foundryVersionId: string },
  knownLatestDeploymentId?: string | null,
) {
  if (knownLatestDeploymentId === deployment.id) return;
  const matches = (yield* client.listAppDeployments(appId)).filter(
    (candidate) => candidate.id === deployment.id,
  );
  if (
    matches.length !== 1 ||
    matches[0]?.foundryVersionId !== deployment.foundryVersionId
  ) {
    return yield* Effect.fail(
      new Error(
        `Prisma deployment '${deployment.id}' with Foundry version '${deployment.foundryVersionId}' is not uniquely owned by App '${appId}'. Refusing to start, promote, or delete a mismatched deployment.`,
      ),
    );
  }
});