import assert from "node:assert/strict";
import test from "node:test";
import { mkdtemp, rm } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { bumpPatchVersion, createState, gotoStage, passStage, recordEvidence, startStage } from "../src/state";
import { stage } from "../src/domain";

test("state machine rejects skipped prerequisites and evidence-free completion", async () => {
  assert.equal(bumpPatchVersion("1.2.9"), "1.2.10");
  assert.throws(() => bumpPatchVersion("latest"), /Invalid semantic version/);
  const root = await mkdtemp(join(tmpdir(), "pom-state-"));
  try {
    let state = createState("State Test", root);
    assert.throws(() => gotoStage(state, 1), /incomplete prerequisites/);
    state = startStage(state, 0);
    assert.equal(state.stageRuns["0"].status, "active");
    assert.throws(() => passStage(state, "report.json"), /lacks evidence/);

    for (const criterion of stage(0).acceptance) {
      state = recordEvidence(state, criterion.id, `Verified ${criterion.label}`, ["01_planning/00_project_brief.md"], "Test");
    }
    state = passStage(state, "00_admin/validation/stage-0.json");
    assert.equal(state.stageRuns["0"].status, "complete");
    assert.equal(state.currentStage, 1);
    assert.deepEqual(state.completedStages, [0]);
  } finally {
    await rm(root, { recursive: true, force: true });
  }
});