Add PDF Report

test -f app.config.js && test -f power.config.json && test -f package.json && test -d src

node -e "const p=require('./package.json'); const deps={...p.dependencies,...p.devDependencies}; const required='expo-print'; if (!deps[required]) { console.error('MISSING: expo-print is not in package.json. The template/app must already ship it for /add-native pdf-report. This skill will not install it or edit native config. Capability not added.'); process.exit(1); } console.log('OK: expo-print package present'); console.log(deps['expo-sharing'] ? 'OK: expo-sharing package present' : 'OPTIONAL_MISSING: expo-sharing is not in package.json; generated PDFs can be created/viewed/uploaded, but sharing helpers must not be generated.');"

// src/native/pdfReport.ts
import * as Print from 'expo-print';
import * as Sharing from 'expo-sharing';

export type PdfReportResult =
  | { ok: true; uri: string; numberOfPages?: number; base64?: string }
  | { ok: false; reason: 'EMPTY_HTML' | 'PRINT_FAILED'; message?: string };

export type PdfShareResult =
  | { ok: true }
  | { ok: false; reason: 'INVALID_URI' | 'SHARING_UNAVAILABLE' | 'SHARE_FAILED'; message?: string };

export function escapePdfHtml(value: string): string {
  return value
    .replace(/&/g, '&')
    .replace(/</g, '&lt;')
    .replace(/>/g, '&gt;')
    .replace(/"/g, '&quot;')
    .replace(/'/g, '&#39;');
}

export function wrapPdfDocument(input: { title: string; bodyHtml: string; styles?: string }): string {
  const title = escapePdfHtml(input.title.trim() || 'Report');
  return `<!doctype html>
<html>
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>${title}</title>
    <style>
      body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; margin: 32px; color: #111827; }
      h1, h2, h3 { margin: 0 0 12px; }
      table { width: 100%; border-collapse: collapse; }
      th, td { border-bottom: 1px solid #e5e7eb; padding: 8px; text-align: left; }
      ${input.styles ?? ''}
    </style>
  </head>
  <body>${input.bodyHtml}</body>
</html>`;
}

export async function createPdfReport(
  html: string,
  options?: { includeBase64?: boolean },
): Promise<PdfReportResult> {
  if (!html.trim()) {
    return { ok: false, reason: 'EMPTY_HTML', message: 'PDF report HTML is empty.' };
  }

  try {
    const result = await Print.printToFileAsync({
      html,
      base64: options?.includeBase64 ?? false,
    });

    return {
      ok: true,
      uri: result.uri,
      numberOfPages: result.numberOfPages,
      base64: result.base64,
    };
  } catch (error: any) {
    return { ok: false, reason: 'PRINT_FAILED', message: error?.message ?? String(error) };
  }
}

export async function sharePdfReport(uri: string, options?: { dialogTitle?: string }): Promise<PdfShareResult> {
  if (!uri || !uri.startsWith('file://')) {
    return { ok: false, reason: 'INVALID_URI', message: 'Generated PDF reports must be shared from a local file URI.' };
  }

  try {
    const available = await Sharing.isAvailableAsync();
    if (!available) {
      return { ok: false, reason: 'SHARING_UNAVAILABLE', message: 'Sharing is not available on this platform.' };
    }

    await Sharing.shareAsync(uri, {
      mimeType: 'application/pdf',
      UTI: 'com.adobe.pdf',
      dialogTitle: options?.dialogTitle ?? 'Share PDF report',
    });

    return { ok: true };
  } catch (error: any) {
    return { ok: false, reason: 'SHARE_FAILED', message: error?.message ?? String(error) };
  }
}