import { areMocksEnabled } from "@/mocks/env";
import type { MockUserRole } from "@/mocks/users";

export type MockApprovalPolicy = {
  id: string;
  name: string;
  amountThreshold: number;
  approverRole: MockUserRole;
};

const seedPolicies: MockApprovalPolicy[] = [
  {
    id: "policy-1",
    name: "Standard under $1,000",
    amountThreshold: 1000,
    approverRole: "approver",
  },
  {
    id: "policy-2",
    name: "Elevated $1,000–$5,000",
    amountThreshold: 5000,
    approverRole: "approver",
  },
  {
    id: "policy-3",
    name: "Executive over $5,000",
    amountThreshold: 5000.01,
    approverRole: "admin",
  },
];

let policyStore: MockApprovalPolicy[] = seedPolicies.map((policy) => ({ ...policy }));

export function getMockApprovalPolicies(): MockApprovalPolicy[] {
  if (!areMocksEnabled()) {
    return [];
  }
  return policyStore.map((policy) => ({ ...policy }));
}

export function getMockApprovalPolicy(id: string): MockApprovalPolicy | undefined {
  return getMockApprovalPolicies().find((policy) => policy.id === id);
}

export function upsertMockApprovalPolicy(policy: MockApprovalPolicy): MockApprovalPolicy {
  const index = policyStore.findIndex((row) => row.id === policy.id);
  const next = { ...policy };
  if (index === -1) {
    policyStore = [...policyStore, next];
  } else {
    policyStore = [...policyStore.slice(0, index), next, ...policyStore.slice(index + 1)];
  }
  return { ...next };
}

export function resetMockApprovalPolicies(): void {
  policyStore = seedPolicies.map((policy) => ({ ...policy }));
}