import { buildPagePublishFailureText } from '../prompts/page-generate.mjs';
import { selectSendableHtmlArtifacts, verifyPageArtifactContent } from '../verify/page-artifact.mjs';
import { filterSharePreviewReadyArtifacts, verifyArtifactSharePreview } from '../verify/share-preview.mjs';

export function evaluatePageGenerateSendableArtifacts({ verifiedArtifacts = [], confirmedArtifacts = [] } = {}) {
  const sendable = selectSendableHtmlArtifacts({ verifiedArtifacts, confirmedArtifacts });
  const verified = sendable.filter((artifact) => verifyPageArtifactContent(artifact).ok);
  const candidates = verified.length > 0 ? verified : sendable;
  return filterSharePreviewReadyArtifacts(candidates);
}

/**
 * Decide whether a page.generate reply may be delivered to the user.
 * Returns { action: 'send'|'fail'|'session_retry', failureText?, reason? }
 */
export function resolvePageGenerateOutcome({
  reply,
  confirmedArtifacts = [],
  verifiedArtifacts = [],
  suspiciousPublishClaim = false,
  bareCompletionReply = false,
  htmlGenerationNeedsRetry = false,
  replyHasPublicLinks = false,
}) {
  const sendable = evaluatePageGenerateSendableArtifacts({ verifiedArtifacts, confirmedArtifacts });

  if (sendable.length > 0) {
    return { action: 'send', artifacts: sendable };
  }

  if (
    suspiciousPublishClaim ||
    bareCompletionReply ||
    (htmlGenerationNeedsRetry && replyHasPublicLinks && confirmedArtifacts.length === 0)
  ) {
    return { action: 'session_retry', reason: 'poisoned_or_fake_claim' };
  }

  if (htmlGenerationNeedsRetry || suspiciousPublishClaim) {
    return {
      action: 'fail',
      failureText: buildPagePublishFailureText(),
      reason: 'skill_or_stub',
    };
  }

  const previewCandidates = filterSharePreviewReadyArtifacts(
    selectSendableHtmlArtifacts({ verifiedArtifacts, confirmedArtifacts }),
  );
  if (previewCandidates.length === 0 && confirmedArtifacts.length > 0) {
    const previewIssue = verifyArtifactSharePreview(
      selectSendableHtmlArtifacts({ verifiedArtifacts, confirmedArtifacts })[0] ?? confirmedArtifacts[0],
    );
    return {
      action: 'fail',
      failureText: buildPagePublishFailureText({
        missingPlatformBrand: previewIssue.reason === 'missing_platform_brand',
        missingSharePreview: previewIssue.reason !== 'missing_platform_brand',
      }),
      reason: previewIssue.reason ?? 'missing_share_preview',
    };
  }

  if (!String(reply?.text ?? '').trim() && sendable.length === 0) {
    return {
      action: 'fail',
      failureText: buildPagePublishFailureText(),
      reason: 'empty_reply',
    };
  }

  return { action: 'send', artifacts: sendable };
}