import type { ComparePagePair, ComparePageResult } from '../types.ts';
function escapeHtml(text: string) {
return text
.replace(/&/g, '&')
.replace(//g, '>')
.replace(/"/g, '"')
.replace(/'/g, ''');
}
export function buildCompareReport(
fileName1: string,
fileName2: string,
pairs: ComparePagePair[],
results: ComparePageResult[]
) {
const totals = results.reduce(
(summary, result) => {
summary.added += result.summary.added;
summary.removed += result.summary.removed;
summary.modified += result.summary.modified;
return summary;
},
{ added: 0, removed: 0, modified: 0 }
);
const rows = results
.map((result, index) => {
const pair = pairs[index];
const changes = result.changes
.map(
(change) =>
`${escapeHtml(change.type)}: ${escapeHtml(change.description)}`
)
.join('');
return `
Comparison ${pair?.pairIndex || index + 1}
PDF 1 page: ${pair?.leftPageNumber ?? 'none'} | PDF 2 page: ${pair?.rightPageNumber ?? 'none'} | Confidence: ${((pair?.confidence || 0) * 100).toFixed(0)}%
Status: ${escapeHtml(result.status)}${result.usedOcr ? ' | OCR used' : ''}
Added: ${result.summary.added} | Removed: ${result.summary.removed} | Modified: ${result.summary.modified}
${changes || '- No semantic changes detected.
'}
`;
})
.join('');
return `
Compare report
PDF Compare Report
PDF 1: ${escapeHtml(fileName1)} | PDF 2: ${escapeHtml(fileName2)}
Modified
${totals.modified}
${rows}
`;
}