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

import {
  boundProofEvidence,
  build,
  originalCases,
  processEvidence,
  proofEvidence,
  request,
  reviewedObligation,
} from "./ReconstructionObligationLedger.fixture.js";
import { createEvidence } from "../domain/evidence.js";
import type { ReviewedReconstructionObligation } from "../domain/reconstructionObligationLedgerSchemas.js";

describe("reconstruction obligation ledger", () => {
  it("does not authenticate packaged-process proof with generic replay evidence", () => {
    const capture = processEvidence();
    const proof = proofEvidence("generic-packaged");
    const initial = build(request([capture, proof]));
    const obligation = initial.obligations[0];
    if (obligation === undefined)
      throw new Error("Expected process obligation");
    const result = build(
      request([capture, proof], {
        manifest: {
          bindings: [
            {
              obligation_id: obligation.obligation_id,
              owner: {
                module_path: "src/processOwner.ts",
                symbol: "runProcess",
                owner_sha256: "5".repeat(64),
              },
              parser_type: null,
              original_cases: originalCases(obligation, capture.evidence_id),
              fixtures: obligation.required_case_kinds.map((caseKind) => ({
                fixture_id: `packaged.${caseKind}`,
                case_kind: caseKind,
                authority: "packaged-process",
                evidence_ids: [proof.evidence_id],
              })),
              verifier: {
                verifier_id: "verifier.packaged",
                claim_id: "claim.process",
                command: "npm run verify:package -- process",
                authority: "packaged-process",
                status: "pass",
                result_evidence_id: proof.evidence_id,
                enumerated_obligation_ids: [obligation.obligation_id],
                nondeterminism: {
                  mode: "partial-order",
                  specification: "Fixture scheduling is partially ordered.",
                },
              },
            },
          ],
          contradictions: [],
        },
      }),
    );

    expect(result.obligations[0]?.diagnostics.map(({ code }) => code)).toEqual(
      expect.arrayContaining([
        "weak-fixture-authority",
        "weak-verifier-authority",
      ]),
    );
  });

  it("propagates an open dependency through the full obligation chain", () => {
    const ids = ["obl.chain.a", "obl.chain.b", "obl.chain.c"] as const;
    const evidence = boundProofEvidence(
      "fixture-chain",
      {
        obligation_ids: ids,
        fixture_ids: ids.map((id) => `fixture.${id}`),
        case_kinds: ["positive"],
        verifier_ids: ids.map((id) => `verifier.${id}`),
        claim_ids: ids.map((id) => `claim.${id}`),
      },
      "shipped-artifact",
    );
    const reviewed = ids.map((id, index) => ({
      ...reviewedObligation(id, evidence.evidence_id),
      dependency_obligation_ids:
        index === 0 ? [ids[1]] : index === 1 ? [ids[2]] : ["obl.chain.missing"],
    }));
    const bindings = reviewed.map((obligation) => ({
      obligation_id: obligation.obligation_id,
      owner: {
        module_path: `src/${obligation.obligation_id}.ts`,
        symbol: "verify",
        owner_sha256: "6".repeat(64),
      },
      parser_type: null,
      original_cases: [
        {
          kind: "positive" as const,
          evidence_id: evidence.evidence_id,
          location: "/fixture/positive",
        },
      ],
      fixtures: [
        {
          fixture_id: `fixture.${obligation.obligation_id}`,
          case_kind: "positive" as const,
          authority: "unit" as const,
          evidence_ids: [evidence.evidence_id],
        },
      ],
      verifier: {
        verifier_id: `verifier.${obligation.obligation_id}`,
        claim_id: `claim.${obligation.obligation_id}`,
        command: "npm test -- fixture-chain",
        authority: "unit" as const,
        status: "pass" as const,
        result_evidence_id: evidence.evidence_id,
        enumerated_obligation_ids: [obligation.obligation_id],
        nondeterminism: {
          mode: "total-order" as const,
          specification: "Fixture execution is ordered.",
        },
      },
    }));
    const result = build(
      request([evidence], {
        reviewed_obligations: reviewed,
        manifest: { bindings, contradictions: [] },
      }),
    );

    expect(result.obligations.map(({ status }) => status)).toEqual([
      "blocked",
      "blocked",
      "blocked",
    ]);
    expect(
      result.obligations.map(({ diagnostics }) =>
        diagnostics.map(({ code }) => code),
      ),
    ).toEqual([
      ["dependency-open"],
      ["dependency-open"],
      ["dependency-missing"],
    ]);
  });
});

describe("reconstruction obligation ledger fail-closed behavior", () => {
  it("fails closed on parser gaps, ambiguous ownership, and contradiction", () => {
    const original = createEvidence(
      undefined,
      { id: "external", name: "External protocol observer", version: "1" },
      {
        predicateType: "rea.protocol-observation",
        operation: "observe_protocol",
        parameters: {},
        result: { status: 200 },
        confidence: "observed",
        authority: "external-service",
      },
    );
    const proof = proofEvidence("protocol");
    const reviewed: ReviewedReconstructionObligation = {
      ...reviewedObligation("obl.protocol", original.evidence_id),
      application_layer: "protocol" as const,
      family: "json-rpc",
      required_original_authority: "external" as const,
      required_fixture_authority: "protocol" as const,
      required_verifier_authority: "protocol" as const,
      requires_parser_type: true,
      required_case_kinds: ["positive", "negative", "malformed"],
    };
    const binding = {
      obligation_id: reviewed.obligation_id,
      owner: {
        module_path: "src/protocol.ts",
        symbol: "handleRequest",
        owner_sha256: "3".repeat(64),
      },
      parser_type: null,
      original_cases: reviewed.required_case_kinds.map((caseKind) => ({
        kind: caseKind,
        evidence_id: original.evidence_id,
        location: `/protocol/${caseKind}`,
      })),
      fixtures: [
        {
          fixture_id: "fixture.positive",
          case_kind: "positive" as const,
          authority: "unit" as const,
          evidence_ids: [proof.evidence_id],
        },
      ],
      verifier: null,
    };
    const result = build(
      request([original, proof], {
        reviewed_obligations: [reviewed],
        manifest: {
          bindings: [binding, binding],
          contradictions: [
            {
              obligation_id: reviewed.obligation_id,
              evidence_ids: [original.evidence_id, proof.evidence_id],
            },
          ],
        },
      }),
    );

    expect(result.status).toBe("failed");
    expect(result.obligations[0]?.status).toBe("contradicted");
    expect(result.obligations[0]?.diagnostics.map(({ code }) => code)).toEqual(
      expect.arrayContaining(["ambiguous-owner", "contradiction"]),
    );
    expect(result.reports.contradicted_obligation_ids).toEqual([
      reviewed.obligation_id,
    ]);
  });
});