import { describe, expect, it } from "vitest";

import {
  compileGlobalGovernanceFacts,
  FactIndex,
  makeTailwindClassFact,
  makeTailwindTokenResolvedFact,
  makeUsageNodeFact,
  ruleTailwindRawColorViaToken,
  runRules,
} from "../index.js";

const FILE = "src/app.tsx";
const LOC = { file: FILE, line: 1, column: 7 };

function indexWithAllowPolicy(): FactIndex {
  const ix = new FactIndex();
  ix.addMany(
    compileGlobalGovernanceFacts({
      tailwind: {
        palette: {
          allow: ["brand-*"],
        },
      },
    })
  );
  return ix;
}

function addResolvedColor(
  ix: FactIndex,
  raw = "bg-red-500",
  token = "red-500",
  source: "default" | "theme-css" = "default"
): void {
  const node = makeUsageNodeFact({
    file: FILE,
    nodePath: "0",
    element: "div",
    location: LOC,
  });
  ix.add(node);
  ix.add(
    makeTailwindClassFact({
      file: FILE,
      nodeId: node.id,
      raw,
      originPath: `attribute#0/class#${raw}`,
      prefix: null,
      modifiers: [],
      important: false,
      negative: false,
      utility: "bg",
      value: { kind: "token", token },
      location: LOC,
    })
  );
  ix.add(
    makeTailwindTokenResolvedFact({
      utility: "bg",
      token,
      resolved: { kind: "color", value: "#ef4444", source },
    })
  );
}

describe("tailwind/raw-color-via-token", () => {
  it("flags default color tokens outside the allowed palette — ACCEPTANCE §5.30", () => {
    const ix = indexWithAllowPolicy();
    addResolvedColor(ix);

    const findings = ruleTailwindRawColorViaToken(ix);
    expect(findings).toHaveLength(1);
    expect(findings[0]).toMatchObject({
      ruleId: "tailwind/raw-color-via-token",
      severity: "moderate",
      message:
        "`bg-red-500` resolves to raw color `#ef4444` (Tailwind default). Project policy requires `brand-*` palette tokens.",
      attributes: {
        utility: "bg",
        token: "red-500",
        resolvedValue: "#ef4444",
        source: "default",
      },
    });
  });

  it("allows tokens matching the palette allow list", () => {
    const ix = indexWithAllowPolicy();
    addResolvedColor(ix, "bg-brand-500", "brand-500");

    expect(ruleTailwindRawColorViaToken(ix)).toHaveLength(0);
  });

  it("allows project-defined theme tokens outside the stock palette names", () => {
    const ix = indexWithAllowPolicy();
    addResolvedColor(ix, "bg-danger", "danger", "theme-css");

    expect(ruleTailwindRawColorViaToken(ix)).toHaveLength(0);
  });

  it("is registered in runRules", () => {
    const ix = indexWithAllowPolicy();
    addResolvedColor(ix);

    expect(runRules(ix).map((f) => f.ruleId)).toContain("tailwind/raw-color-via-token");
  });
});