import { describe, expect, it } from "vitest";
import type { FailureKind, Variant } from "../types.js";
import { decide } from "./failure-handler.js";

const FAILURES: FailureKind[] = [
  "agent-error",
  "tests-failed",
  "build-failed",
  "sandbox-timeout",
  "unknown",
];
const VARIANTS: Variant[] = ["per-ticket", "single-pr"];

describe("decide", () => {
  describe("first failure", () => {
    for (const variant of VARIANTS) {
      for (const failure of FAILURES) {
        it(`retries on first failure (variant=${variant}, kind=${failure})`, () => {
          const action = decide(failure, { variant, retryCount: 0 });
          expect(action.kind).toBe("retry");
        });
      }
    }
  });

  describe("after retry", () => {
    for (const failure of FAILURES) {
      it(`per-ticket variant skips after second failure (kind=${failure})`, () => {
        const action = decide(failure, {
          variant: "per-ticket",
          retryCount: 1,
        });
        expect(action.kind).toBe("skip");
        if (action.kind === "skip") {
          expect(action.reason).toContain(failure);
        }
      });

      it(`single-pr variant halts after second failure (kind=${failure})`, () => {
        const action = decide(failure, {
          variant: "single-pr",
          retryCount: 1,
        });
        expect(action.kind).toBe("halt");
        if (action.kind === "halt") {
          expect(action.reason).toContain(failure);
        }
      });
    }
  });

  it("halts/skips on third+ failure too (defensive)", () => {
    expect(
      decide("unknown", { variant: "per-ticket", retryCount: 2 }).kind,
    ).toBe("skip");
    expect(decide("unknown", { variant: "single-pr", retryCount: 5 }).kind).toBe(
      "halt",
    );
  });
});