import assert from "node:assert/strict";
import { test } from "node:test";
import { capabilityId as id, valueType, validateWorkspaceRevision } from "../src/capability-model/index.js";
import {
  contentDigest,
  contentDigestAsync,
  planEvolution,
  reviewSemanticMajors,
  runtimeContracts,
  storageContracts,
  storageChangeRequiresMigration,
} from "../src/capability-model/evolution.js";
import {
  capabilityFixtureSource,
  capabilityResourceSources,
  compileCapabilityFixture,
  makeValidCapabilityWorkspace,
} from "./fixtures/capability-model.js";

test("QX carries stable conformance IDs and implementation semantic majors", () => {
  const result = compileCapabilityFixture({
    workspace: capabilityFixtureSource.replace(
      "conform Project as Named {",
      'conform Project as Named id "conformance:project:named" semantic-major 3 {',
    ),
    todo: capabilityResourceSources.todo.replace(
      'revision "package:todo-runtime@1" {',
      'revision "package:todo-runtime@1" semantic-major 2 {',
    ),
  });
  assert.ok(result.ok, JSON.stringify(result));
  assert.equal(result.workspace.conformances[0]!.id, "conformance:project:named");
  assert.equal(result.workspace.conformances[0]!.semanticMajor, 3);
  assert.equal(result.workspace.packageImports[0]!.semanticMajor, 2);
});

test("invalid majors and duplicate owner identities are rejected", () => {
  const workspace = makeValidCapabilityWorkspace();
  workspace.packageImports[0]!.semanticMajor = 0;
  workspace.conformances[0]!.semanticMajor = 1.5;
  workspace.conformances[0]!.id = id.conformance("same");
  workspace.conformances[1]!.id = id.conformance("same");
  const issues = validateWorkspaceRevision(workspace);
  assert.equal(issues.filter((entry) => entry.code === "invalid-semantic-major").length, 2);
  assert.ok(issues.some((entry) => entry.code === "duplicate-conformance-id"));
});

test("hashing is canonical and rejects values outside the persisted JSON contract", () => {
  assert.equal(contentDigest({ z: 1, a: { y: 3, b: 2 } }), contentDigest({ a: { b: 2, y: 3 }, z: 1 }));
  assert.notEqual(contentDigest([1, 2]), contentDigest([2, 1]));
  assert.throws(() => contentDigest(NaN));
  assert.throws(() => contentDigest(new Date()));
});

test("cooperative hashing preserves canonical identities and services the event loop", async () => {
  const sparse = [1, 2, 3];
  delete sparse[1];
  const values = [null, false, -0, "中\\n\ud800", sparse, { z: 1, a: { omitted: undefined, b: [false, 1e100] } }];
  for (const value of values) assert.equal(await contentDigestAsync(value), contentDigest(value));
  for (const value of [undefined, NaN, Infinity, new Date(), [undefined]])
    await assert.rejects(contentDigestAsync(value));
  const large = Array.from({ length: 50000 }, (_, index) => ({ z: "definition".repeat(8), a: index }));
  const expected = contentDigest(large);
  let serviced = false;
  const timer = setTimeout(() => {
    serviced = true;
  }, 0);
  try {
    assert.equal(await contentDigestAsync(large), expected);
    assert.equal(serviced, true, "large verification must let host renewals and RPCs run");
  } finally {
    clearTimeout(timer);
  }
});

test("a workspace root change and display names do not restart package runtimes", () => {
  const before = makeValidCapabilityWorkspace();
  const after = structuredClone(before);
  after.id = id.workspaceRevision("next");
  after.sourceRootCommit = "f".repeat(40);
  after.atoms[0]!.displayName = "Renamed";
  after.sharedAttachments[0]!.displayName = "Renamed storage";
  after.conformances.reverse();
  after.interfaceImports.reverse();
  const report = planEvolution(before, after, { allowLegacy: true });
  assert.deepEqual(
    report.runtimeActions.map((entry) => entry.action),
    ["keep"],
  );
  assert.deepEqual(report.storageChanges, []);
  assert.deepEqual(report.packageChecks, []);
});

test("consumer changes preserve unrelated resource owners", () => {
  const before = makeValidCapabilityWorkspace();
  before.packageImports.push({
    packageId: id.package("package:resource-owner"),
    revisionId: id.packageRevision("package:resource-owner@1"),
    displayName: "ResourceOwner",
    source: { repository: "https://example.org/owner.git", commit: "a".repeat(40) },
    exports: [
      {
        kind: "function",
        id: id.packageExport("export:owner:ping"),
        displayName: "ping",
        inputType: valueType.unit,
        outputType: valueType.unit,
        dependencyPorts: [],
      },
    ],
  });
  const after = structuredClone(before);
  after.packageImports[0]!.source.commit = "e".repeat(40);
  const actions = planEvolution(before, after, { allowLegacy: true }).runtimeActions;
  assert.equal(actions.find((entry) => entry.groupId === "package:resource-owner")!.action, "keep");
  assert.equal(actions.find((entry) => entry.groupId === "package:todo-runtime")!.action, "replace");
});

test("storage defaults and ownership changes invalidate consumers without requiring a major", () => {
  const before = makeValidCapabilityWorkspace();
  const after = structuredClone(before);
  const slot = after.sharedAttachments[0]!;
  assert.equal(slot.kind, "state");
  if (slot.kind === "state") slot.defaultValue = "Different default";
  const report = planEvolution(before, after, { allowLegacy: true });
  assert.equal(report.storageChanges.length, 1);
  assert.deepEqual(report.migrationRequired, []);
  assert.equal(report.runtimeActions[0]!.action, "replace");
  assert.deepEqual(report.reviews, []);
  assert.notDeepEqual(storageContracts(before), storageContracts(after));
});

test("semantic review receipts cover exact consumer/provider contracts", () => {
  const before = makeValidCapabilityWorkspace();
  before.conformances[0]!.id = id.conformance("conformance:project:named");
  const after = structuredClone(before);
  after.conformances[0]!.semanticMajor = 2;
  const report = planEvolution(before, after, { allowLegacy: true });
  assert.equal(report.reviews.length, 1);
  assert.equal(report.reviews[0]!.accepted, false);
  const receipt = {
    requirementDigest: report.reviews[0]!.requirementDigest,
    decision: "accepted-unchanged" as const,
    rationale: "Reviewed the semantic change against summary behavior",
    agentId: "workspace-agent",
  };
  assert.equal(planEvolution(before, after, { allowLegacy: true, reviews: [receipt] }).reviews[0]!.accepted, true);
  after.packageImports[0]!.source.commit = "f".repeat(40);
  assert.equal(planEvolution(before, after, { allowLegacy: true, reviews: [receipt] }).reviews[0]!.accepted, false);
});

test("execution semantic review is independent of storage migration and process action planning", () => {
  const before = makeValidCapabilityWorkspace();
  before.conformances[0]!.id = id.conformance("conformance:project:named");
  const after = structuredClone(before);
  after.conformances[0]!.semanticMajor = 2;
  const report = reviewSemanticMajors(before, after);
  assert.equal(report.checkerVersion, "quixos-semantic-review-v1");
  assert.equal(report.reviews.length, 1);
  assert.equal(report.reviews[0]!.accepted, false);
  assert.equal("migrationRequired" in report, false);
  assert.equal("runtimeActions" in report, false);
  assert.equal(report.blockers.length, 1);
  const receipt = {
    requirementDigest: report.reviews[0]!.requirementDigest,
    decision: "accepted-unchanged" as const,
    rationale: "The consumer only displays this provider's unchanged label contract",
    agentId: "fixture-agent",
  };
  assert.deepEqual(reviewSemanticMajors(before, after, [receipt]).blockers, []);
  const oldReceipt = {
    ...receipt,
    requirementDigest: planEvolution(before, after, { allowLegacy: true }).reviews[0]!.requirementDigest,
  };
  assert.equal(reviewSemanticMajors(before, after, [oldReceipt]).reviews[0]!.accepted, false);
  after.packageImports[0]!.source.commit = "f".repeat(40);
  assert.equal(reviewSemanticMajors(before, after, [receipt]).reviews[0]!.accepted, false);
  assert.deepEqual(reviewSemanticMajors(null, after).blockers, []);
  assert.throws(
    () => reviewSemanticMajors(before, { ...after, workspaceId: id.workspace("different") }),
    /different workspace/,
  );
  const earlier = structuredClone(after);
  earlier.conformances[0]!.semanticMajor = 1;
  assert.ok(reviewSemanticMajors(after, earlier).blockers.some((message) => message.includes("decreases")));
});

test("evolution enrollment is explicit and never erases legacy ownership", () => {
  const workspace = makeValidCapabilityWorkspace();
  const report = planEvolution(workspace, workspace);
  assert.ok(report.blockers.some((entry) => entry.includes("workspace-shared")));
  assert.ok(report.blockers.some((entry) => entry.includes("authored ID")));
  assert.equal(runtimeContracts(workspace).length, 1);
  assert.throws(
    () => planEvolution(workspace, { ...workspace, workspaceId: id.workspace("other") }),
    /different workspace/,
  );
});

test("automatic preservation distinguishes additions and defaults from incompatible storage", () => {
  const workspace = makeValidCapabilityWorkspace();
  const before = storageContracts(workspace).find((entry) => entry.kind === "state")!;
  const next = structuredClone(before);
  const value = next.definition as Record<string, unknown>;
  value.defaultValue = { displayName: "important user data" };
  assert.equal(storageChangeRequiresMigration(before, next, new Set()), false);
  next.ownerId = "another-owner";
  assert.equal(storageChangeRequiresMigration(before, next, new Set()), true);
  assert.equal(storageChangeRequiresMigration(before, undefined, new Set()), true);
  delete value.defaultValue;
  assert.equal(storageChangeRequiresMigration(undefined, next, new Set([value.attachedTo as string])), true);
  assert.equal(storageChangeRequiresMigration(undefined, next, new Set()), false);
  const slot = workspace.sharedAttachments.find((entry) => entry.kind === "state")!;
  if (slot.kind !== "state") throw new Error("fixture slot");
  slot.defaultValue = { displayName: "one" };
  const first = storageContracts(workspace);
  slot.defaultValue = { displayName: "two" };
  assert.notDeepEqual(storageContracts(workspace), first, "user data must not be stripped as schema metadata");
});