snapshot of https://github.com/marmelab/atomic-crm.git (main, 2026-09-18; blobs > 131072B omitted)

supabase/functions/postmark/forwardedParser.ts

@@ -0,0 +1,83 @@
+/** Patterns that mark the beginning of a forwarded block in the email body. */
+const FORWARD_SEPARATOR_PATTERNS = [
+  // Gmail
+  /^-{5,}\s*Forwarded message\s*-{5,}/im,
+  // Apple Mail
+  /^Begin forwarded message:/im,
+  // Outlook / Exchange
+  /^-{5,}\s*Original Message\s*-{5,}/im,
+  // French clients (Transféré / Message transféré)
+  /^-{5,}\s*Message transf[eé]r[eé]\s*-{5,}/im,
+  /^-{5,}\s*Transf[eé]r[eé]\s*-{5,}/im,
+  // German (Weitergeleitet)
+  /^-{5,}\s*Weitergeleitete Nachricht\s*-{5,}/im,
+];
+
+export const stripForwardingHeaderBlock = (text: string): string => {
+  const lines = text.split("\n");
+  let bodyStartIndex = 0;
+
+  // First check that the first line matches a known forwarding separator pattern
+  const hasForwardedSeparator = FORWARD_SEPARATOR_PATTERNS.some((pattern) => {
+    const match = lines[0].match(pattern);
+    return !!match;
+  });
+  if (!hasForwardedSeparator) {
+    // No known forwarding pattern detected, return the original text
+    return text.trim();
+  }
+
+  // Walk through the header-like lines at the top of the block
+  let i = 0;
+  while (i < lines.length) {
+    const line = lines[i];
+    // Blank line signals end of the forwarded header block
+    if (line.trim() === "") {
+      bodyStartIndex = i + 1;
+      break;
+    }
+    i++;
+  }
+
+  // No blank line found after the header → no body to extract
+  if (bodyStartIndex === 0) {
+    return "";
+  }
+
+  return lines.slice(bodyStartIndex).join("\n").trim();
+};
+
+export const stripSubjectForwardingPrefix = (subject: string): string => {
+  const result = subject
+    .replace(/^(Fwd|FW|FWD|Tr|SV|VS|WG|WG:)\s*[:-]\s*/i, "")
+    .trim();
+
+  if (result.length === 0) {
+    console.warn(
+      `Stripping forwarding prefix from subject "${subject}" resulted in empty string, returning original subject`,
+    );
+    return subject;
+  }
+
+  return result;
+};
+
+export const stripMailSignature = (text: string): string => {
+  const signatureSeparatorIndex = text.indexOf("\n-- \n");
+  if (signatureSeparatorIndex !== -1) {
+    return text.substring(0, signatureSeparatorIndex).trim();
+  }
+  return text.trim();
+};
+
+export const getForwardedMailContent = (body: string): string => {
+  const strippedBody = stripForwardingHeaderBlock(stripMailSignature(body));
+
+  if (strippedBody.length === 0) {
+    console.warn(
+      "Stripping mail signature and forwarded header block resulted in empty note content, returning original body",
+    );
+    return body.trim();
+  }
+  return strippedBody;
+};