"use strict";

function record(value) {
  return typeof value === "object" && value !== null && !Array.isArray(value) ? value : {};
}

function stringOrNull(value) {
  return typeof value === "string" && value.length > 0 ? value : null;
}

function stringArray(value) {
  return Array.isArray(value) && value.every((item) => typeof item === "string") ? value : null;
}

function digestFromImage(value) {
  if (typeof value !== "string" || !value.includes("@")) return null;
  return value.split("@").slice(1).join("@") || null;
}

function exactSkipMarker(records, event) {
  return [...records].reverse().find((item) => item.event === event
    && item.status === "skipped"
    && item.reason === "no-build-no-rollout-plan") || null;
}

const pacContractTasks = new Set(["plan-artifacts", "collect-artifacts", "gitops-promote"]);

function firstString(...values) {
  for (const value of values) {
    if (typeof value === "string" && value.length > 0) return value;
  }
  return null;
}

function pipelineRunMatchesConsumer(consumerInput, itemInput) {
  const consumer = record(consumerInput);
  const item = record(itemInput);
  const metadata = record(item.metadata);
  const labels = record(metadata.labels);
  const name = stringOrNull(metadata.name) || "";
  const prefix = stringOrNull(consumer.pipelineRunPrefix) || "";
  const pipeline = stringOrNull(consumer.pipeline) || "";
  return (prefix.length > 0 && name.startsWith(prefix))
    || (pipeline.length > 0 && labels["tekton.dev/pipeline"] === pipeline)
    || (pipeline.length > 0 && labels["tekton.dev/pipelineName"] === pipeline);
}

function classifyPacPipelineRun(consumerInput, itemInput) {
  const consumer = record(consumerInput);
  const item = record(itemInput);
  const metadata = record(item.metadata);
  const labels = record(metadata.labels);
  const annotations = record(metadata.annotations);
  const candidate = pipelineRunMatchesConsumer(consumer, item);
  const eventType = firstString(
    labels["pipelinesascode.tekton.dev/event-type"],
    annotations["pipelinesascode.tekton.dev/event-type"],
  );
  const repository = firstString(
    labels["pipelinesascode.tekton.dev/repository"],
    annotations["pipelinesascode.tekton.dev/repository"],
  );
  const managedBy = stringOrNull(labels["app.kubernetes.io/managed-by"]);
  const provider = stringOrNull(annotations["pipelinesascode.tekton.dev/git-provider"]);
  const expectedRepository = stringOrNull(consumer.repository);
  const outer = candidate
    && eventType === "push"
    && expectedRepository !== null
    && repository === expectedRepository
    && managedBy === "pipelinesascode.tekton.dev"
    && provider === "gitea";
  const inner = candidate
    && !outer
    && labels["app.kubernetes.io/part-of"] === "hwlab-web-probe-sentinel"
    && labels["unidesk.ai/ci-system"] === "tekton"
    && annotations["unidesk.ai/source-authority"] === "gitea-snapshot"
    && typeof annotations["unidesk.ai/publish-gitops"] === "string";

  const deliveryClass = outer
    ? "outer-pac-event"
    : inner
      ? "inner-deterministic-publish"
      : "unknown";
  const reason = outer
    ? "observed-pac-push-metadata-matches-consumer"
    : inner
      ? "deterministic-sentinel-publish-without-proven-parent"
      : candidate
        ? "consumer-candidate-lacks-classification-evidence"
        : "not-a-consumer-candidate";
  return {
    deliveryClass,
    reason,
    candidate,
    deliveryAuthorityEligible: outer,
    deliveryOwner: outer ? "pac-controller-observed" : null,
    executionOwner: inner ? "tekton-child-unattached" : null,
    parentPipelineRun: null,
    parentRelation: inner ? "unproven" : null,
    metadataObservationOnly: outer,
    admissionProvenanceVerified: false,
    valuesPrinted: false,
  };
}

function taskTerminalRecord(value) {
  const taskRun = record(value);
  const metadata = record(taskRun.metadata);
  const labels = record(metadata.labels);
  const pipelineTask = stringOrNull(labels["tekton.dev/pipelineTask"]);
  if (pipelineTask === null || !pacContractTasks.has(pipelineTask)) return null;
  const status = record(taskRun.status);
  const condition = Array.isArray(status.conditions)
    ? status.conditions.map(record).find((item) => item.type === "Succeeded") || {}
    : {};
  const conditionStatus = stringOrNull(condition.status);
  const normalizedStatus = conditionStatus === "True"
    ? "succeeded"
    : conditionStatus === "False"
      ? "failed"
      : "running";
  return {
    event: "pac-task-terminal",
    pipelineTask,
    taskRun: stringOrNull(metadata.name),
    status: normalizedStatus,
    reason: stringOrNull(condition.reason),
    results: Array.isArray(status.results)
      ? status.results.map(record).map((item) => stringOrNull(item.name)).filter(Boolean)
      : [],
  };
}

function parsePacLogRecords(value) {
  const records = [];
  const lines = String(value || "").split(/\r?\n/u);
  let pending = "";
  for (const line of lines) {
    const trimmed = line.trim();
    if (pending.length === 0) {
      if (!trimmed.startsWith("{")) continue;
      pending = trimmed;
    } else {
      pending += `\n${line}`;
    }
    try {
      records.push(JSON.parse(pending));
      pending = "";
    } catch {
      if (pending.length > 2 * 1024 * 1024) pending = "";
    }
  }
  return records;
}

function exactTaskTerminal(records, pipelineTask) {
  return [...records].reverse().find((item) => item.event === "pac-task-terminal"
    && item.pipelineTask === pipelineTask) || null;
}

function terminalSource(task, marker, markerStatus = "skipped", markerSource = "structured-log-marker") {
  return {
    present: task !== null || marker !== null,
    status: task?.status || (marker === null ? "missing" : markerStatus),
    source: task !== null ? "taskrun-condition" : marker === null ? null : markerSource,
    taskRun: task?.taskRun || null,
    reason: task?.reason || marker?.reason || null,
    results: Array.isArray(task?.results) ? task.results : [],
    markerPresent: marker !== null,
    markerSource: marker === null ? null : markerSource,
  };
}

function extractPacSourceObservation(recordsInput) {
  const records = Array.isArray(recordsInput) ? recordsInput.map(record) : [];
  const plan = [...records].reverse().find((item) => item.event === "g14-ci-plan") || null;
  const collectMarker = exactSkipMarker(records, "collect-artifacts");
  const promoteMarker = exactSkipMarker(records, "gitops-promote");
  const planTask = exactTaskTerminal(records, "plan-artifacts");
  const collectTask = exactTaskTerminal(records, "collect-artifacts");
  const promoteTask = exactTaskTerminal(records, "gitops-promote");
  if (plan === null && collectMarker === null && promoteMarker === null && planTask === null && collectTask === null && promoteTask === null) return null;

  const affected = stringArray(plan?.affectedServices);
  const rollout = stringArray(plan?.rolloutServices);
  const build = stringArray(plan?.buildServices);
  const reused = stringArray(plan?.reusedServices);
  const sourceCommit = stringOrNull(plan?.sourceCommitId);
  const planShapeValid = affected !== null && rollout !== null && build !== null;
  const sourceCommitValid = sourceCommit !== null && /^[0-9a-f]{40}$/iu.test(sourceCommit);
  const noRuntimeChangePlan = planShapeValid
    && affected.length === 0
    && rollout.length === 0
    && build.length === 0;
  const noRuntimeChangeMarkers = collectMarker !== null && promoteMarker !== null;
  const skipMarkerSeen = collectMarker !== null || promoteMarker !== null;
  const skipMarkerConflict = skipMarkerSeen && !noRuntimeChangePlan;
  const deliveryTerminalReady = planTask?.status === "succeeded"
    && collectTask?.status === "succeeded"
    && promoteTask?.status === "succeeded";
  const deliveryTerminalFailed = planTask?.status === "failed"
    || collectTask?.status === "failed"
    || promoteTask?.status === "failed";

  let mode = "inconsistent";
  let valid = false;
  let reason = "structured-plan-or-terminal-marker-is-incomplete";
  if (planShapeValid && sourceCommitValid && noRuntimeChangePlan && noRuntimeChangeMarkers) {
    mode = "no-runtime-change";
    valid = true;
    reason = "no-build-no-rollout-plan";
  } else if (planShapeValid && sourceCommitValid && !noRuntimeChangePlan && !skipMarkerConflict && deliveryTerminalReady) {
    mode = "delivery";
    valid = true;
    reason = "artifact-or-runtime-delivery-required";
  } else if (!sourceCommitValid) {
    reason = "source-commit-invalid-or-missing";
  } else if (!planShapeValid) {
    reason = "delivery-plan-shape-invalid-or-missing";
  } else if (skipMarkerConflict) {
    reason = "no-runtime-change-marker-conflicts-with-delivery-plan";
  } else if (deliveryTerminalFailed) {
    reason = "delivery-terminal-failed";
  } else if (!noRuntimeChangePlan) {
    reason = "delivery-terminal-evidence-incomplete";
  }

  return {
    schemaVersion: "v1",
    contract: "hwlab-g14-ci-plan",
    mode,
    valid,
    reason,
    sourceCommit,
    plan: {
      affectedServiceCount: affected?.length ?? null,
      rolloutServiceCount: rollout?.length ?? null,
      buildServiceCount: build?.length ?? null,
      reusedServiceCount: reused?.length ?? null,
    },
    terminal: {
      planArtifacts: planTask?.status || (plan === null ? "missing" : "observed"),
      collectArtifacts: collectMarker !== null ? "no-build-no-rollout-plan" : collectTask?.status || "missing",
      gitopsPromote: promoteMarker !== null ? "no-build-no-rollout-plan" : promoteTask?.status || "missing",
    },
    terminalSources: {
      planArtifacts: terminalSource(planTask, plan, "observed", "g14-ci-plan-structured-log"),
      collectArtifacts: terminalSource(collectTask, collectMarker),
      gitopsPromote: terminalSource(promoteTask, promoteMarker),
    },
    valuesPrinted: false,
  };
}

function digestOf(item) {
  const digest = stringOrNull(item.digest);
  if (digest !== null) return digest;
  const digestRef = stringOrNull(item.digestRef);
  return digestRef !== null && digestRef.includes("@") ? digestRef.split("@").slice(1).join("@") : null;
}

function extractPacArtifactEvidence(recordsInput, logText) {
  const records = Array.isArray(recordsInput) ? recordsInput.map(record) : [];
  const sourceObservation = extractPacSourceObservation(records);
  const catalog = [...records].reverse().find((item) => item.status === "published"
    && Array.isArray(item.services)
    && typeof item.registryVerified === "boolean") || null;
  const publish = [...records].reverse().find((item) => item.phase === "gitops-publish" || stringOrNull(item.gitopsCommit) !== null) || null;
  const image = publish || [...records].reverse().find((item) => stringOrNull(item.imageStatus) !== null
    || item.status === "reused"
    || item.status === "built") || null;
  const logLines = String(logText || "").split(/\r?\n/u);
  const gitopsCommit = stringOrNull(image?.gitopsCommit)
    || [...logLines].reverse().map((line) => line.match(/^\[[^\]]+\s+([0-9a-f]{7,64})\]/u)?.[1] || null).find(Boolean)
    || null;
  const catalogDigests = catalog === null
    ? []
    : [...new Set(catalog.services.map(record).map(digestOf).filter((value) => /^sha256:[0-9a-f]{64}$/iu.test(value || "")))];
  const loggedDigests = [...new Set(logLines.flatMap((line) => [...line.matchAll(/"(?:digest|environmentDigest)"\s*:\s*"(sha256:[0-9a-f]{64})"/gu)].map((match) => match[1])))];
  const digests = catalogDigests.length > 0 ? catalogDigests : loggedDigests;
  const envHeaderIndex = logLines.findIndex((line) => /^ENV_REUSE\s+NODE_DEPS\s+/u.test(line.trim()));
  let humanEnv = null;
  if (envHeaderIndex >= 0) {
    const row = (logLines.slice(envHeaderIndex + 1).find((line) => line.trim()) || "").trim().split(/\s+/u);
    if (row.length >= 5) humanEnv = { envReuse: row[0], nodeDeps: row[1], buildPackage: row[2], buildNetwork: row[3], cache: row[4] };
  }
  if (catalog !== null) {
    const reusedCount = Number.isInteger(catalog.reusedCount) ? catalog.reusedCount : null;
    const publishedCount = Number.isInteger(catalog.publishedCount) ? catalog.publishedCount : null;
    return {
      imageStatus: reusedCount !== null && reusedCount > 0 && publishedCount === 0 ? "reused" : "published",
      envIdentity: null,
      envReuse: reusedCount !== null && reusedCount > 0 ? "hit" : null,
      nodeDepsReuse: null,
      buildCache: null,
      digest: digests.length === 1 ? digests[0] : null,
      digests,
      gitopsCommit,
      sourceCommit: stringOrNull(catalog.sourceCommitId) || sourceObservation?.sourceCommit || null,
      runtimeSourceCommit: null,
      action: "artifact-catalog-published",
      reason: reusedCount !== null && reusedCount > 0 ? "reused-env-catalog" : "artifact-catalog",
      catalog: {
        present: true,
        status: stringOrNull(catalog.status),
        sourceCommit: stringOrNull(catalog.sourceCommitId),
        registryVerified: catalog.registryVerified === true,
        publishedCount,
        reusedCount,
        requiredServiceCount: Number.isInteger(catalog.requiredServiceCount) ? catalog.requiredServiceCount : null,
        digestCount: digests.length,
        source: "collect-artifacts-structured-log",
        valuesPrinted: false,
      },
      sourceObservation,
      valuesPrinted: false,
    };
  }
  if (image !== null) {
    const env = record(image.envReuse);
    return {
      imageStatus: stringOrNull(image.imageStatus) || stringOrNull(image.status) || (stringOrNull(image.digestRef) !== null ? "built" : null),
      envIdentity: stringOrNull(image.envIdentity),
      envReuse: stringOrNull(env.dependencyReuse) || stringOrNull(env.mode) || stringOrNull(image.envReuseStatus),
      nodeDepsReuse: null,
      buildCache: null,
      digest: digestOf(image) || (digests.length === 1 ? digests[0] : null),
      digests,
      gitopsCommit,
      sourceCommit: stringOrNull(image.sourceCommit) || sourceObservation?.sourceCommit || null,
      runtimeSourceCommit: stringOrNull(image.runtimeSourceCommit),
      baselineSourceCommit: stringOrNull(image.baselineSourceCommit),
      action: stringOrNull(image.action),
      reason: stringOrNull(image.reason),
      sourceObservation,
      valuesPrinted: false,
    };
  }
  if (sourceObservation !== null) {
    return {
      imageStatus: sourceObservation.mode === "no-runtime-change" && sourceObservation.valid === true ? "retained" : null,
      envIdentity: null,
      envReuse: null,
      nodeDepsReuse: null,
      buildCache: null,
      digest: null,
      digests: [],
      gitopsCommit,
      sourceCommit: sourceObservation.sourceCommit || null,
      runtimeSourceCommit: null,
      action: sourceObservation.mode,
      reason: sourceObservation.reason,
      sourceObservation,
      valuesPrinted: false,
    };
  }
  return {
    imageStatus: humanEnv !== null ? "published" : null,
    envIdentity: null,
    envReuse: humanEnv?.envReuse || null,
    nodeDepsReuse: humanEnv?.nodeDeps || null,
    buildCache: humanEnv?.cache || null,
    buildPackage: humanEnv?.buildPackage || null,
    buildNetwork: humanEnv?.buildNetwork || null,
    digest: digests.length === 1 ? digests[0] : null,
    digests,
    gitopsCommit,
    sourceCommit: null,
    sourceObservation: null,
    valuesPrinted: false,
  };
}

function evaluatePacStatus(inputValue) {
  const input = record(inputValue);
  const artifact = record(input.artifact);
  const argo = record(input.argo);
  const runtime = record(input.runtime);
  const sourceObservation = record(artifact.sourceObservation);
  const revisionRelation = record(argo.revisionRelation);
  const gitopsRelation = stringOrNull(revisionRelation.relation) || "unknown";
  const sourceCommit = stringOrNull(input.sourceCommit);
  const registryDigest = stringOrNull(input.registryDigest);
  const artifactDigest = stringOrNull(artifact.digest);
  const expectedDigest = registryDigest || artifactDigest;
  const runtimeImage = stringOrNull(runtime.image);
  const runtimeDigest = stringOrNull(runtime.digest) || digestFromImage(runtimeImage);
  const runtimeMatches = expectedDigest === null || runtimeDigest === expectedDigest;
  const runtimeReady = Number.isInteger(runtime.replicas)
    && runtime.replicas > 0
    && runtime.readyReplicas === runtime.replicas;
  const selectedArtifactDigests = [...new Set([
    artifactDigest,
    ...(Array.isArray(artifact.digests) ? artifact.digests : []),
  ].filter((value) => typeof value === "string" && value.length > 0))];
  const selectedArtifactMatchesRuntime = runtimeDigest !== null && selectedArtifactDigests.includes(runtimeDigest);
  const registryMatchesArtifact = registryDigest === null || artifactDigest === null || registryDigest === artifactDigest;
  const healthUrl = stringOrNull(input.healthUrl);
  const healthStatus = stringOrNull(input.healthStatus);
  const healthReady = healthUrl === null || healthStatus === "200";
  const gitopsReady = stringOrNull(artifact.gitopsCommit) !== null && stringOrNull(argo.revision) !== null;
  const gitopsRevisionAligned = gitopsRelation === "exact" || gitopsRelation === "descendant";
  const deliveryDisabled = artifact.imageStatus === "disabled";
  const deliverySkipped = artifact.imageStatus === "skipped";
  const sourceObservationMode = stringOrNull(sourceObservation.mode);
  const hwlabCatalogDelivery = sourceObservationMode === "delivery"
    && sourceObservation.contract === "hwlab-g14-ci-plan";
  const noRuntimeChange = sourceObservationMode === "no-runtime-change";
  const catalog = record(artifact.catalog);
  const catalogPresent = catalog.present === true;
  const catalogSourceCommit = stringOrNull(catalog.sourceCommit);
  const catalogSourceMatches = catalogSourceCommit !== null && catalogSourceCommit === sourceCommit;
  const catalogDeliveryEvidence = sourceObservationMode === "delivery"
    && sourceObservation.valid === true
    && catalogPresent
    && catalog.status === "published"
    && catalog.registryVerified === true
    && catalogSourceMatches;
  const registryEvidenceReady = input.registryPresent === true || catalogDeliveryEvidence;
  const sourceObservationInconsistent = sourceObservationMode === "inconsistent"
    || (sourceObservationMode !== null && sourceObservation.valid !== true);
  const observationSourceCommit = stringOrNull(sourceObservation.sourceCommit);
  const observationSourceMatches = sourceCommit !== null && observationSourceCommit === sourceCommit;
  const retainedRevision = stringOrNull(argo.revision);
  const retainedDigestReady = runtimeDigest !== null && /^sha256:[0-9a-f]{64}$/iu.test(runtimeDigest);
  const retainedOutputConflict = noRuntimeChange
    && (stringOrNull(artifact.gitopsCommit) !== null
      || artifactDigest !== null
      || selectedArtifactDigests.length > 0);

  let code = "pac-diagnostics-not-applicable";
  let phase = "not-applicable";
  let ok = true;
  let hint = "consumer did not expose artifact or runtime alignment evidence";
  if (deliveryDisabled) {
    code = "pac-delivery-disabled";
    phase = "disabled";
    hint = "delivery is disabled by YAML; registry, GitOps and runtime artifacts are intentionally absent";
  } else if (!sourceCommit) {
    ok = false;
    code = "pac-source-unknown";
    phase = "source-unknown";
    hint = "latest PaC PipelineRun did not expose a source commit";
  } else if (sourceObservationInconsistent) {
    ok = false;
    code = "pac-source-observation-inconsistent";
    phase = "source-observation-inconsistent";
    hint = "structured delivery plan or terminal evidence is incomplete or contradictory";
  } else if (sourceObservationMode !== null && !observationSourceMatches) {
    ok = false;
    code = "pac-source-observation-mismatch";
    phase = "source-observation-mismatch";
    hint = "the structured source observation does not belong to the selected PipelineRun source commit";
  } else if (noRuntimeChange && retainedOutputConflict) {
    ok = false;
    code = "pac-retained-output-conflict";
    phase = "source-only-output-conflict";
    hint = "a no-runtime-change PipelineRun unexpectedly reported a new artifact or GitOps output";
  } else if (noRuntimeChange && retainedRevision === null) {
    ok = false;
    code = "pac-retained-gitops-missing";
    phase = "retained-gitops-missing";
    hint = "the no-runtime-change observation is valid but the retained Argo GitOps revision is missing";
  } else if (noRuntimeChange && (argo.sync !== "Synced" || argo.health !== "Healthy")) {
    ok = false;
    code = "pac-retained-argo-not-ready";
    phase = "retained-argo-not-ready";
    hint = "the no-runtime-change observation is valid but retained Argo is not Synced/Healthy";
  } else if (noRuntimeChange && gitopsRelation !== "retained") {
    ok = false;
    code = "pac-retained-revision-unproven";
    phase = "retained-revision-unproven";
    hint = "the retained GitOps revision was not linked to the structured no-runtime-change observation";
  } else if (noRuntimeChange && !runtimeReady) {
    ok = false;
    code = "pac-retained-runtime-not-ready";
    phase = "retained-runtime-not-ready";
    hint = "the retained runtime ready replicas do not match the desired replica count";
  } else if (noRuntimeChange && !retainedDigestReady) {
    ok = false;
    code = "pac-retained-runtime-digest-missing";
    phase = "retained-runtime-digest-missing";
    hint = "the retained runtime is not pinned to a visible sha256 digest";
  } else if (noRuntimeChange && !healthReady) {
    ok = false;
    code = "pac-retained-health-not-ready";
    phase = "retained-health-not-ready";
    hint = "the retained runtime health endpoint is not ready";
  } else if (noRuntimeChange) {
    code = "pac-ready-no-runtime-change";
    phase = "ready-no-runtime-change";
    hint = "the successful source observation requires no artifact, GitOps or runtime change; retained Argo and runtime provenance remain healthy";
  } else if (catalogPresent && !catalogSourceMatches) {
    ok = false;
    code = "pac-artifact-catalog-source-mismatch";
    phase = "artifact-catalog-source-mismatch";
    hint = "the artifact catalog source commit does not match the selected PipelineRun";
  } else if (hwlabCatalogDelivery && (!catalogPresent || catalog.status !== "published")) {
    ok = false;
    code = "pac-artifact-catalog-missing";
    phase = "artifact-catalog-missing";
    hint = "the HWLAB delivery plan completed but a published artifact catalog is not visible";
  } else if (hwlabCatalogDelivery && catalog.registryVerified !== true) {
    ok = false;
    code = "pac-artifact-catalog-unverified";
    phase = "artifact-catalog-unverified";
    hint = "the HWLAB artifact catalog did not prove registry verification";
  } else if (hwlabCatalogDelivery && selectedArtifactDigests.length === 0) {
    ok = false;
    code = "pac-artifact-catalog-digest-missing";
    phase = "artifact-catalog-digest-missing";
    hint = "the HWLAB artifact catalog did not expose any sha256 digest";
  } else if (stringOrNull(input.imageRepository) !== null && !registryEvidenceReady) {
    ok = false;
    code = "pac-registry-missing";
    phase = "source-ready-registry-missing";
    hint = "PaC source commit is known but neither the configured registry tag nor a verified artifact catalog is visible";
  } else if (!registryMatchesArtifact) {
    ok = false;
    code = "pac-artifact-registry-mismatch";
    phase = "artifact-registry-mismatch";
    hint = "PipelineRun artifact digest does not match the configured registry digest";
  } else if (!gitopsReady) {
    ok = false;
    code = "pac-gitops-missing";
    phase = "artifact-ready-gitops-missing";
    hint = "PipelineRun completed but its GitOps commit is not visible";
  } else if (argo.sync !== "Synced" || argo.health !== "Healthy") {
    ok = false;
    code = "pac-argo-not-ready";
    phase = "gitops-ready-argo-pending";
    hint = "GitOps exists but Argo is not Synced/Healthy";
  } else if (!gitopsRevisionAligned) {
    ok = false;
    code = `pac-argo-revision-${gitopsRelation}`;
    phase = `gitops-ready-argo-revision-${gitopsRelation}`;
    hint = `Argo revision relation is ${gitopsRelation}; only exact or commit-graph-proven descendant is deployable`;
  } else if (catalogDeliveryEvidence && !selectedArtifactMatchesRuntime) {
    ok = false;
    code = "pac-catalog-artifact-runtime-mismatch";
    phase = "artifact-catalog-runtime-mismatch";
    hint = "the runtime digest is not present in the verified artifact catalog for this PipelineRun";
  } else if (gitopsRelation === "descendant" && !selectedArtifactMatchesRuntime) {
    ok = false;
    code = "pac-descendant-artifact-runtime-mismatch";
    phase = "argo-descendant-runtime-mismatch";
    hint = "a GitOps descendant is ready only when the selected PipelineRun artifact digest exactly matches the runtime digest";
  } else if (!runtimeMatches) {
    ok = false;
    code = "pac-runtime-not-aligned";
    phase = "argo-ready-runtime-mismatch";
    hint = "runtime image digest does not match the artifact digest produced by the selected PipelineRun";
  } else if (!runtimeReady) {
    ok = false;
    code = "pac-runtime-not-ready";
    phase = "runtime-replicas-not-ready";
    hint = "runtime ready replicas do not match the desired replica count";
  } else if (!healthReady) {
    ok = false;
    code = "pac-health-not-ready";
    phase = "runtime-ready-health-pending";
    hint = "runtime image is aligned but the configured health endpoint is not ready";
  } else if (artifactDigest || selectedArtifactDigests.length > 0 || stringOrNull(input.imageRepository) !== null) {
    code = deliverySkipped
      ? "pac-ready-runtime-unchanged"
      : gitopsRelation === "descendant"
        ? "pac-ready-gitops-descendant"
        : "pac-ready-gitops-exact";
    phase = "ready";
    hint = deliverySkipped
      ? "YAML-declared runtime inputs are unchanged; the existing image, GitOps manifest, runtime and health remain aligned"
      : gitopsRelation === "descendant"
        ? "Argo is on a commit-graph-proven GitOps descendant and the selected artifact, runtime, Argo and health are aligned"
        : "Argo is on the exact selected GitOps commit and the artifact, runtime, Argo and health are aligned";
  }

  return {
    ok,
    code,
    phase,
    hint,
    sourceCommit,
    runtimeSourceCommit: stringOrNull(input.runtimeSourceCommit),
    imageRepository: stringOrNull(input.imageRepository),
    registryProbeBase: stringOrNull(input.registryProbeBase),
    imageTag: stringOrNull(input.imageTag),
    registry: {
      present: registryEvidenceReady,
      probePresent: input.registryPresent === true,
      catalogVerified: catalogDeliveryEvidence,
      digest: registryDigest,
      url: stringOrNull(input.registryUrl),
    },
    selectedArtifactDigests,
    gitops: {
      branch: stringOrNull(input.gitopsBranch),
      manifestPath: stringOrNull(input.gitopsManifestPath),
      commit: noRuntimeChange ? retainedRevision : stringOrNull(artifact.gitopsCommit) || retainedRevision,
      revisionRelation,
    },
    argo: {
      sync: stringOrNull(argo.sync),
      health: stringOrNull(argo.health),
      revision: retainedRevision,
      repoURL: stringOrNull(argo.repoURL),
      targetRevision: stringOrNull(argo.targetRevision),
      revisionRelation,
    },
    runtime: {
      image: runtimeImage,
      digest: runtimeDigest,
      readyReplicas: runtime.readyReplicas ?? null,
      replicas: runtime.replicas ?? null,
    },
    health: { url: healthUrl, status: healthStatus, ready: healthReady },
    pipelineRun: stringOrNull(input.pipelineRun),
    deliveryDisabled,
    deliverySkipped,
    deliveryMode: noRuntimeChange ? "no-runtime-change" : sourceObservationMode || "delivery",
    sourceObservation: Object.keys(sourceObservation).length > 0 ? sourceObservation : null,
    provenance: noRuntimeChange ? {
      relation: "retained",
      sourceCommit,
      gitopsRevision: retainedRevision,
      runtimeImage,
      runtimeDigest,
      newArtifact: false,
      newGitopsRevision: false,
      runtimeChanged: false,
      valuesPrinted: false,
    } : {
      relation: gitopsRelation,
      sourceCommit,
      gitopsRevision: retainedRevision,
      runtimeImage,
      runtimeDigest,
      valuesPrinted: false,
    },
    valuesPrinted: false,
  };
}

function fixtureInput(overrides = {}) {
  const digest = `sha256:${"a".repeat(64)}`;
  const revision = "b".repeat(40);
  return {
    sourceCommit: "c".repeat(40),
    artifact: {},
    argo: {
      sync: "Synced",
      health: "Healthy",
      revision,
      revisionRelation: { relation: "retained", observedRevision: revision },
    },
    runtime: { image: `registry/service@${digest}`, digest, replicas: 1, readyReplicas: 1 },
    registryPresent: false,
    healthUrl: null,
    healthStatus: null,
    ...overrides,
  };
}

function noRuntimeChangeObservation(sourceCommit = "c".repeat(40)) {
  return extractPacSourceObservation([
    {
      event: "g14-ci-plan",
      sourceCommitId: sourceCommit,
      affectedServices: [],
      rolloutServices: [],
      buildServices: [],
      reusedServices: ["service"],
    },
    { event: "collect-artifacts", status: "skipped", reason: "no-build-no-rollout-plan" },
    { event: "gitops-promote", status: "skipped", reason: "no-build-no-rollout-plan" },
  ]);
}

function deliveryObservation(sourceCommit = "c".repeat(40)) {
  return extractPacSourceObservation([
    {
      event: "g14-ci-plan",
      sourceCommitId: sourceCommit,
      affectedServices: ["service"],
      rolloutServices: ["service"],
      buildServices: ["service"],
      reusedServices: [],
    },
    { event: "pac-task-terminal", pipelineTask: "plan-artifacts", taskRun: "plan", status: "succeeded", reason: "Succeeded", results: [] },
    { event: "pac-task-terminal", pipelineTask: "collect-artifacts", taskRun: "collect", status: "succeeded", reason: "Succeeded", results: [] },
    { event: "pac-task-terminal", pipelineTask: "gitops-promote", taskRun: "promote", status: "succeeded", reason: "Succeeded", results: [] },
  ]);
}

function publishedCatalog(sourceCommit = "c".repeat(40)) {
  return { present: true, status: "published", sourceCommit, registryVerified: true };
}

function runPacStatusFixtureChecks() {
  const digestA = `sha256:${"a".repeat(64)}`;
  const digestD = `sha256:${"d".repeat(64)}`;
  const revision = "b".repeat(40);
  const retained = noRuntimeChangeObservation();
  const delivery = deliveryObservation();
  const exactArgo = { sync: "Synced", health: "Healthy", revision, revisionRelation: { relation: "exact", expectedRevision: revision, observedRevision: revision } };
  const cases = [
    {
      id: "retained-ready",
      expectedOk: true,
      expectedCode: "pac-ready-no-runtime-change",
      input: fixtureInput({ artifact: { imageStatus: "retained", sourceObservation: retained } }),
    },
    {
      id: "retained-gitops-missing",
      expectedOk: false,
      expectedCode: "pac-retained-gitops-missing",
      input: fixtureInput({ artifact: { imageStatus: "retained", sourceObservation: retained }, argo: { sync: "Synced", health: "Healthy", revision: null, revisionRelation: { relation: "unknown" } } }),
    },
    {
      id: "delivery-ready-exact",
      expectedOk: true,
      expectedCode: "pac-ready-gitops-exact",
      input: fixtureInput({ artifact: { imageStatus: "built", digest: digestA, digests: [digestA], gitopsCommit: revision, sourceObservation: delivery, catalog: publishedCatalog() }, argo: exactArgo, runtime: { image: `registry/service@${digestA}`, digest: digestA, replicas: 1, readyReplicas: 1 } }),
    },
    {
      id: "delivery-gitops-missing",
      expectedOk: false,
      expectedCode: "pac-gitops-missing",
      input: fixtureInput({ artifact: { imageStatus: "built", digest: digestA, digests: [digestA], sourceObservation: delivery, catalog: publishedCatalog() }, argo: { sync: "Synced", health: "Healthy", revision: null, revisionRelation: { relation: "unknown" } } }),
    },
    {
      id: "delivery-runtime-mismatch",
      expectedOk: false,
      expectedCode: "pac-catalog-artifact-runtime-mismatch",
      input: fixtureInput({ artifact: { imageStatus: "built", digest: digestA, digests: [digestA], gitopsCommit: revision, sourceObservation: delivery, catalog: publishedCatalog() }, argo: exactArgo, runtime: { image: `registry/service@${digestD}`, digest: digestD, replicas: 1, readyReplicas: 1 } }),
    },
    {
      id: "catalog-delivery-ready",
      expectedOk: true,
      expectedCode: "pac-ready-gitops-exact",
      input: fixtureInput({ imageRepository: "registry/service", artifact: { imageStatus: "reused", digests: [digestA], gitopsCommit: revision, sourceObservation: delivery, catalog: { present: true, status: "published", sourceCommit: "c".repeat(40), registryVerified: true } }, argo: exactArgo, runtime: { image: `registry/service@${digestA}`, digest: digestA, replicas: 1, readyReplicas: 1 } }),
    },
    {
      id: "catalog-delivery-missing",
      expectedOk: false,
      expectedCode: "pac-artifact-catalog-missing",
      input: fixtureInput({ imageRepository: "registry/service", artifact: { imageStatus: "reused", digest: digestA, digests: [digestA], gitopsCommit: revision, sourceObservation: delivery }, registryPresent: true, argo: exactArgo, runtime: { image: `registry/service@${digestA}`, digest: digestA, replicas: 1, readyReplicas: 1 } }),
    },
    {
      id: "catalog-delivery-unverified",
      expectedOk: false,
      expectedCode: "pac-artifact-catalog-unverified",
      input: fixtureInput({ imageRepository: "registry/service", artifact: { imageStatus: "reused", digest: digestA, digests: [digestA], gitopsCommit: revision, sourceObservation: delivery, catalog: { present: true, status: "published", sourceCommit: "c".repeat(40), registryVerified: false } }, registryPresent: true, argo: exactArgo, runtime: { image: `registry/service@${digestA}`, digest: digestA, replicas: 1, readyReplicas: 1 } }),
    },
    {
      id: "catalog-delivery-digest-missing",
      expectedOk: false,
      expectedCode: "pac-artifact-catalog-digest-missing",
      input: fixtureInput({ imageRepository: "registry/service", artifact: { imageStatus: "reused", gitopsCommit: revision, sourceObservation: delivery, catalog: { present: true, status: "published", sourceCommit: "c".repeat(40), registryVerified: true } }, registryPresent: true, argo: exactArgo, runtime: { image: `registry/service@${digestA}`, digest: digestA, replicas: 1, readyReplicas: 1 } }),
    },
    {
      id: "catalog-delivery-runtime-mismatch",
      expectedOk: false,
      expectedCode: "pac-catalog-artifact-runtime-mismatch",
      input: fixtureInput({ imageRepository: "registry/service", artifact: { imageStatus: "reused", digests: [digestA], gitopsCommit: revision, sourceObservation: delivery, catalog: { present: true, status: "published", sourceCommit: "c".repeat(40), registryVerified: true } }, argo: exactArgo, runtime: { image: `registry/service@${digestD}`, digest: digestD, replicas: 1, readyReplicas: 1 } }),
    },
    {
      id: "delivery-terminal-evidence-missing",
      expectedOk: false,
      expectedCode: "pac-source-observation-inconsistent",
      input: fixtureInput({ artifact: { sourceObservation: extractPacSourceObservation([{ event: "g14-ci-plan", sourceCommitId: "c".repeat(40), affectedServices: ["service"], rolloutServices: ["service"], buildServices: [], reusedServices: ["service"] }]) } }),
    },
    {
      id: "incomplete-no-runtime-change-markers",
      expectedOk: false,
      expectedCode: "pac-source-observation-inconsistent",
      input: fixtureInput({ artifact: { sourceObservation: extractPacSourceObservation([{ event: "g14-ci-plan", sourceCommitId: "c".repeat(40), affectedServices: [], rolloutServices: [], buildServices: [], reusedServices: [] }]) } }),
    },
    {
      id: "retained-source-mismatch",
      expectedOk: false,
      expectedCode: "pac-source-observation-mismatch",
      input: fixtureInput({ sourceCommit: "e".repeat(40), artifact: { imageStatus: "retained", sourceObservation: retained } }),
    },
    {
      id: "delivery-one-sided-skip-conflict",
      expectedOk: false,
      expectedCode: "pac-source-observation-inconsistent",
      input: fixtureInput({ artifact: { sourceObservation: extractPacSourceObservation([
        { event: "g14-ci-plan", sourceCommitId: "c".repeat(40), affectedServices: ["service"], rolloutServices: ["service"], buildServices: ["service"], reusedServices: [] },
        { event: "gitops-promote", status: "skipped", reason: "no-build-no-rollout-plan" },
      ]) } }),
    },
  ];
  const checks = cases.map((item) => {
    const result = evaluatePacStatus(item.input);
    return {
      id: item.id,
      ok: result.ok === item.expectedOk && result.code === item.expectedCode,
      expectedOk: item.expectedOk,
      actualOk: result.ok,
      expectedCode: item.expectedCode,
      actualCode: result.code,
    };
  });
  return { ok: checks.every((item) => item.ok), checks, valuesPrinted: false };
}

module.exports = {
  classifyPacPipelineRun,
  evaluatePacStatus,
  extractPacArtifactEvidence,
  extractPacSourceObservation,
  parsePacLogRecords,
  runPacStatusFixtureChecks,
  pipelineRunMatchesConsumer,
  taskTerminalRecord,
};