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fix(billing): fallback PDF paginates long tables instead of truncating

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The marshalling manifest cut off at one page ("... 10 more row(s) not
shown") because the fallback drew rows only until it hit the bottom band.
Now the table flows across as many pages as it needs:

- page 1 keeps the full header + summary tiles; continuation pages get a slim
  "(continued — page N)" header and a re-drawn table header
- the verification notice and signature lines stay pinned to the final page,
  moving to a fresh page when rows run too deep for the bottom band
- the copy watermark repeats on every page of its copy
- a 12-page safety cap keeps the old truncation note as a last resort

Verified by standalone render: 50-row manifest -> 2 pages, all 50 rows, no
truncation; 5-row doc stays 1 page; two-copy freight order still renders 2
watermarked pages.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Hagernesh
2026-07-10 10:05:00 +00:00
parent 4ca4363489
commit 00875dd2f4
1 changed files with 81 additions and 41 deletions
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122
apps/edr-freight-api/src/modules/billing/documents/styled-pdf.util.ts
View File

@@ -170,15 +170,20 @@ export function buildTabularFallbackPdf(html: string): Buffer {
// whole HTML at once would merge both copies' tiles and drop the watermarks.
const copies = [...html.matchAll(/<section class="copy">([\s\S]*?)<\/section>/gi)].map((m) => m[1]);
const fragments = copies.length ? copies : [html];
return assemblePdf(fragments.map((fragment) => buildTabularPageOps(fragment)));
return assemblePdf(fragments.flatMap((fragment) => buildTabularPageOps(fragment)));
}
function buildTabularPageOps(html: string): { ops: string[]; page: { width: number; height: number } } {
function buildTabularPageOps(
html: string,
): Array<{ ops: string[]; page: { width: number; height: number } }> {
const pick = (re: RegExp) => html.match(re)?.[1];
const title = htmlToText(pick(/<h1[^>]*>([\s\S]*?)<\/h1>/i) ?? "Document");
const subtitle = htmlToText(pick(/class="subtitle"[^>]*>([\s\S]*?)<\/div>/i) ?? "");
const metaRef = htmlToText(pick(/class="meta"[\s\S]*?<strong>([\s\S]*?)<\/strong>/i) ?? "");
const metaLabel =
htmlToText(pick(/class="meta"[^>]*>([\s\S]*?)<strong/i) ?? "").toUpperCase() || "REFERENCE";
const generated = htmlToText(pick(/Generated:\s*([^<]+)/i) ?? "");
const watermark = htmlToText(pick(/class="watermark"[^>]*>([\s\S]*?)<\/div>/i) ?? "");
const tiles: Array<[string, string]> = [];
for (const m of html.matchAll(
@@ -204,30 +209,49 @@ function buildTabularPageOps(html: string): { ops: string[]; page: { width: numb
const M = 32;
const contentW = page.width - M * 2;
const right = page.width - M;
const ops: string[] = [];
const MAX_PAGES = 12;
// Copy watermark, underneath everything else.
const watermark = htmlToText(pick(/class="watermark"[^>]*>([\s\S]*?)<\/div>/i) ?? "");
if (watermark) ops.push(watermarkOp(watermark, page));
const pagesOut: Array<{ ops: string[]; page: { width: number; height: number } }> = [];
let ops: string[] = [];
let y = 0;
// Header
ops.push(lineOp(M, page.height - 28, right, page.height - 28, PdfColor.teal, 2.4));
ops.push(textOp("ETHIO-DJIBOUTI RAILWAY S.C.", M, page.height - 44, 8.5, "F2", PdfColor.gray));
ops.push(textOp(clipText(title, landscape ? 82 : 52), M, page.height - 68, 19, "F2", PdfColor.dark));
if (subtitle) ops.push(textOp(clipText(subtitle, 96), M, page.height - 82, 9, "F1", PdfColor.gray));
const metaLabel =
htmlToText(pick(/class="meta"[^>]*>([\s\S]*?)<strong/i) ?? "").toUpperCase() || "REFERENCE";
if (metaRef) {
ops.push(textOpRight(clipText(metaLabel, 26), right, page.height - 42, 7.5, "F2", PdfColor.gray));
ops.push(textOpRight(clipText(metaRef, 28), right, page.height - 58, 12, "F2", PdfColor.dark));
}
if (generated) {
ops.push(textOpRight(clipText(`Generated ${generated}`, 40), right, page.height - 72, 8, "F1", PdfColor.gray));
}
ops.push(lineOp(M, page.height - 92, right, page.height - 92, PdfColor.line, 1));
const drawFullHeader = () => {
ops.push(lineOp(M, page.height - 28, right, page.height - 28, PdfColor.teal, 2.4));
ops.push(textOp("ETHIO-DJIBOUTI RAILWAY S.C.", M, page.height - 44, 8.5, "F2", PdfColor.gray));
ops.push(textOp(clipText(title, landscape ? 82 : 52), M, page.height - 68, 19, "F2", PdfColor.dark));
if (subtitle) ops.push(textOp(clipText(subtitle, 96), M, page.height - 82, 9, "F1", PdfColor.gray));
if (metaRef) {
ops.push(textOpRight(clipText(metaLabel, 26), right, page.height - 42, 7.5, "F2", PdfColor.gray));
ops.push(textOpRight(clipText(metaRef, 28), right, page.height - 58, 12, "F2", PdfColor.dark));
}
if (generated) {
ops.push(textOpRight(clipText(`Generated ${generated}`, 40), right, page.height - 72, 8, "F1", PdfColor.gray));
}
ops.push(lineOp(M, page.height - 92, right, page.height - 92, PdfColor.line, 1));
y = page.height - 100;
};
// Summary tiles
let y = page.height - 100;
const drawContinuationHeader = (pageNo: number) => {
ops.push(lineOp(M, page.height - 24, right, page.height - 24, PdfColor.teal, 1.6));
ops.push(
textOp(clipText(`${title} (continued — page ${pageNo})`, landscape ? 100 : 68), M, page.height - 42, 11, "F2", PdfColor.dark),
);
if (metaRef) ops.push(textOpRight(clipText(metaRef, 28), right, page.height - 42, 10, "F2", PdfColor.gray));
y = page.height - 54;
};
const startPage = (first: boolean) => {
ops = [];
if (watermark) ops.push(watermarkOp(watermark, page));
if (first) drawFullHeader();
else drawContinuationHeader(pagesOut.length + 1);
};
const finishPage = () => pagesOut.push({ ops, page });
startPage(true);
// Summary tiles (first page only)
if (tiles.length) {
const cols = landscape ? 6 : 4;
const tileW = contentW / cols;
@@ -243,21 +267,34 @@ function buildTabularPageOps(html: string): { ops: string[]; page: { width: numb
y -= tileH + 12;
}
// Table
// Table, paginated across as many pages as the rows need.
if (headers.length) {
const colW = contentW / headers.length;
const headerH = 16;
const rowH = 14;
const cellChars = Math.max(4, Math.floor(colW / 3.9));
ops.push(rectOp(M, y - headerH, contentW, headerH, PdfColor.tint, PdfColor.line, 0.6));
headers.forEach((h, c) =>
ops.push(textOp(clipText(h, cellChars), M + c * colW + 4, y - 11, 7, "F2", PdfColor.teal)),
);
y -= headerH;
const bottomReserve = 46; // keep clear of the page edge on row-only pages
let shown = 0;
for (const row of rows) {
if (y < 96) break;
const drawTableHeader = () => {
ops.push(rectOp(M, y - headerH, contentW, headerH, PdfColor.tint, PdfColor.line, 0.6));
headers.forEach((h, c) =>
ops.push(textOp(clipText(h, cellChars), M + c * colW + 4, y - 11, 7, "F2", PdfColor.teal)),
);
y -= headerH;
};
drawTableHeader();
let truncated = 0;
for (const [index, row] of rows.entries()) {
if (y - rowH < bottomReserve) {
if (pagesOut.length + 1 >= MAX_PAGES) {
truncated = rows.length - index;
break;
}
finishPage();
startPage(false);
drawTableHeader();
}
ops.push(rectOp(M, y - rowH, contentW, rowH, "1 1 1", PdfColor.line, 0.4));
headers.forEach((_h, c) => {
if (c > 0) ops.push(lineOp(M + c * colW, y - rowH, M + c * colW, y, PdfColor.line, 0.3));
@@ -265,30 +302,33 @@ function buildTabularPageOps(html: string): { ops: string[]; page: { width: numb
if (cell) ops.push(textOp(clipText(cell, cellChars), M + c * colW + 4, y - 10, 6.8, "F1", PdfColor.dark));
});
y -= rowH;
shown += 1;
}
if (shown < rows.length) {
ops.push(textOp(`... ${rows.length - shown} more row(s) not shown`, M, y - 10, 7, "F1", PdfColor.gray));
if (truncated > 0) {
ops.push(textOp(`... ${truncated} more row(s) not shown`, M, y - 10, 7, "F1", PdfColor.gray));
}
}
// Notice (verification clause)
// Notice + signatures live on the final page; give them a fresh page when the
// rows ran too deep for the fixed bottom band.
if (y < 110 && (notice || signatures.length)) {
finishPage();
startPage(false);
}
if (notice) {
ops.push(lineOp(M, 78, M, 54, PdfColor.teal, 2));
wrapText(notice, landscape ? 155 : 104)
.slice(0, 2)
.forEach((ln, i) => ops.push(textOp(ln, M + 8, 72 - i * 11, 7.5, "F1", PdfColor.gray)));
}
// Signatures
const sigW = contentW / signatures.length;
signatures.forEach((s, i) => {
signatures.forEach((sig, i) => {
const x = M + i * sigW;
ops.push(lineOp(x, 40, x + sigW - 18, 40, PdfColor.dark, 0.7));
ops.push(textOp(clipText(s, Math.floor((sigW - 18) / 3.6)), x, 30, 7, "F1", PdfColor.gray));
ops.push(textOp(clipText(sig, Math.floor((sigW - 18) / 3.6)), x, 30, 7, "F1", PdfColor.gray));
});
finishPage();
return { ops, page };
return pagesOut;
}
/** Greedy word-wrap to a maximum character width. */