import { describe, it, expect } from "vitest";
import { nextTaskTitle, carryApproval } from "./preview";

describe("nextTaskTitle", () => {
  it("swaps an existing version suffix", () => {
    expect(nextTaskTitle("UNG_102_019_010_cmp_TT_v004", "v005")).toBe(
      "UNG_102_019_010_cmp_TT_v005"
    );
  });

  it("is idempotent when the title already matches", () => {
    expect(nextTaskTitle("UNG_102_019_010_cmp_TT_v005", "v005")).toBe(
      "UNG_102_019_010_cmp_TT_v005"
    );
  });

  it("appends when the title carries no version yet", () => {
    expect(nextTaskTitle("UNG_102_019_010_cmp_TT", "v005")).toBe(
      "UNG_102_019_010_cmp_TT_v005"
    );
  });

  it("only touches a trailing suffix, not a version inside the name", () => {
    expect(nextTaskTitle("UNG_v001_019_010_cmp_TT_v004", "v005")).toBe(
      "UNG_v001_019_010_cmp_TT_v005"
    );
  });

  it("handles double-digit and uppercase suffixes", () => {
    expect(nextTaskTitle("SHOT_cmp_TT_V12", "v013")).toBe("SHOT_cmp_TT_v013");
  });
});

describe("carryApproval", () => {
  it("carries an approval forward, so a re-export does not reopen a signed-off shot", () => {
    expect(carryApproval("APPROVED")).toBe("APPROVED");
  });

  // The regression: a render queued to address a note used to arrive already
  // wearing that note, so nothing registered that the work had been redone.
  it("resets NEEDS_CHANGES — this render is the fix for it", () => {
    expect(carryApproval("NEEDS_CHANGES")).toBe("PENDING_REVIEW");
  });

  it("resets REJECTED for the same reason", () => {
    expect(carryApproval("REJECTED")).toBe("PENDING_REVIEW");
  });

  it("leaves an unreviewed version pending", () => {
    expect(carryApproval("PENDING_REVIEW")).toBe("PENDING_REVIEW");
  });

  it("defaults to pending when there is no previous version", () => {
    expect(carryApproval(null)).toBe("PENDING_REVIEW");
    expect(carryApproval(undefined)).toBe("PENDING_REVIEW");
  });
});