import assert from "node:assert/strict";
import test from "node:test";
import type { WorkflowFacts } from "./domain.ts";
import { enforceUiImpact } from "./ui-policy.ts";

function facts(overrides: Partial<WorkflowFacts> = {}): WorkflowFacts {
  return {
    stage: "design",
    taskKind: "feature",
    requestTerms: [],
    candidatePaths: [],
    languages: ["typescript"],
    tags: [],
    riskTags: [],
    ...overrides,
  };
}

test("objective non-trivial UI signals cannot be downgraded", () => {
  const result = enforceUiImpact({
    plannerImpact: "minor",
    plannerEvidence: ["Planner expected a small change"],
    affectedSurfaces: ["Application shell"],
    facts: facts({ requestTerms: ["redesign", "navigation"] }),
  });
  assert.equal(result.impact, "non-trivial");
  assert.equal(result.objectiveImpact, "non-trivial");
  assert.ok(result.evidence.some((entry) => entry.includes("redesign")));
});

test("layout paths and accessibility evidence require prototypes", () => {
  const result = enforceUiImpact({
    plannerImpact: "none",
    plannerEvidence: [],
    affectedSurfaces: [],
    facts: facts({
      candidatePaths: ["src/routes/layout.svelte"],
      riskTags: ["accessibility"],
    }),
  });
  assert.equal(result.impact, "non-trivial");
  assert.equal(result.evidence.length, 2);
});

test("common pages, forms, modals, sidebars, and settings changes cannot bypass prototypes", () => {
  for (const signal of ["page", "form", "modal", "sidebar", "settings"]) {
    const result = enforceUiImpact({
      plannerImpact: "minor",
      plannerEvidence: [],
      affectedSurfaces: [],
      facts: facts({ requestTerms: ["add", signal] }),
    });
    assert.equal(result.impact, "non-trivial", signal);
  }
  assert.equal(
    enforceUiImpact({
      plannerImpact: "minor",
      plannerEvidence: [],
      affectedSurfaces: [],
      facts: facts({ candidatePaths: ["src/routes/account/+page.svelte"] }),
    }).impact,
    "non-trivial",
  );
});

test("backend workflow terminology does not imply a UI prototype", () => {
  const result = enforceUiImpact({
    plannerImpact: "none",
    plannerEvidence: ["Backend orchestration only"],
    affectedSurfaces: [],
    facts: facts({
      requestTerms: ["workflow", "queue"],
      candidatePaths: ["src/server/workflow.ts"],
    }),
  });
  assert.equal(result.impact, "none");
});

test("configuration files named settings do not imply a UI prototype", () => {
  const result = enforceUiImpact({
    plannerImpact: "none",
    plannerEvidence: ["Configuration inventory only"],
    affectedSurfaces: [],
    facts: facts({
      candidatePaths: [
        "/home/user/.pi/agent/settings.json",
        "config/settings.yaml",
      ],
      tags: ["configuration", "security"],
    }),
  });
  assert.equal(result.impact, "none");
  assert.equal(result.objectiveImpact, "none");
});

test("generic frontend evidence does not inflate a minor change", () => {
  const result = enforceUiImpact({
    plannerImpact: "minor",
    plannerEvidence: ["Adds one field"],
    affectedSurfaces: ["Dashboard"],
    facts: facts({
      candidatePaths: ["src/routes/dashboard.ts"],
      tags: ["frontend", "ui"],
    }),
  });
  assert.equal(result.impact, "minor");
});