Initial commit: banking statement download scripts

2026-03-12 11:51:16 +11:00
commit 68c5d561a6
5 changed files with 410 additions and 0 deletions
@@ -0,0 +1,101 @@
+// =============================================================================
+// ANZ Statement Download Helper
+// =============================================================================
+// PASTE + ENTER, then click Download buttons normally.
+// The blob tab still opens (just close it), BUT you also get a properly
+// named PDF file downloaded automatically.
+//
+// TO STOP: just refresh the page (F5)
+// =============================================================================
+
+(function () {
+    'use strict';
+
+    let downloadCount = 0;
+    let lastClickedFilename = null;
+
+    // Track which button was clicked
+    document.addEventListener('click', function (e) {
+        const btn = e.target.closest('button[data-clicktrack="Download"]');
+        if (btn) {
+            const label = btn.getAttribute('aria-label') || '';
+            const match = label.match(
+                /Download the statement issued on (\d{2}) (\w{3}) (\d{4}) (\w+) \d{4}/
+            );
+            if (match) {
+                const [, , monthShort, year, monthFull] = match;
+                const monthNum = new Date(`${monthShort} 1, 2000`).getMonth() + 1;
+                lastClickedFilename = `ANZ-Statement-${year}-${String(monthNum).padStart(2, '0')}-${monthFull}.pdf`;
+            } else {
+                lastClickedFilename = `ANZ-Statement-${Date.now()}.pdf`;
+            }
+            console.log(`⏳ ${lastClickedFilename}...`);
+        }
+    }, true);
+
+    // Intercept XHR — READ ONLY, don't modify anything
+    const origOpen = XMLHttpRequest.prototype.open;
+    const origSend = XMLHttpRequest.prototype.send;
+
+    XMLHttpRequest.prototype.open = function (method, url, ...rest) {
+        this._url = url;
+        return origOpen.call(this, method, url, ...rest);
+    };
+
+    XMLHttpRequest.prototype.send = function (body) {
+        if (this._url && this._url.includes('download-statement')) {
+            // Just listen — don't modify anything. ANZ's code runs normally.
+            this.addEventListener('load', function () {
+                try {
+                    const text = typeof this.response === 'string' ? this.response : this.responseText;
+                    const json = JSON.parse(text);
+                    const pdf = findPdfData(json);
+                    if (pdf) {
+                        const fn = lastClickedFilename || `ANZ-Statement-${Date.now()}.pdf`;
+                        savePdf(pdf, fn);
+                        downloadCount++;
+                        console.log(`✅ #${downloadCount} ${fn} (${(pdf.length * 3 / 4 / 1024).toFixed(0)} KB)`);
+                        console.log(`   Close the blob tab, then click next Download button.`);
+                    }
+                } catch (e) {
+                    // Silently ignore — ANZ's handler still runs fine
+                }
+            });
+        }
+        return origSend.call(this, body);
+    };
+
+    function findPdfData(obj, depth) {
+        if ((depth || 0) > 5) return null;
+        if (typeof obj === 'string' && obj.length > 1000) {
+            if (obj.startsWith('JVBERi')) return obj;
+            if (obj.match(/^[A-Za-z0-9+/=]+$/) && obj.length > 10000) return obj;
+        }
+        if (Array.isArray(obj)) {
+            for (const item of obj) { const r = findPdfData(item, (depth || 0) + 1); if (r) return r; }
+        }
+        if (obj && typeof obj === 'object') {
+            for (const key of Object.keys(obj)) { const r = findPdfData(obj[key], (depth || 0) + 1); if (r) return r; }
+        }
+        return null;
+    }
+
+    function savePdf(base64, filename) {
+        const bin = atob(base64);
+        const bytes = new Uint8Array(bin.length);
+        for (let i = 0; i < bin.length; i++) bytes[i] = bin.charCodeAt(i);
+        const blob = new Blob([bytes], { type: 'application/pdf' });
+        const url = URL.createObjectURL(blob);
+        const a = document.createElement('a');
+        a.href = url; a.download = filename;
+        document.body.appendChild(a); a.click(); document.body.removeChild(a);
+        setTimeout(() => URL.revokeObjectURL(url), 2000);
+    }
+
+    console.log('');
+    console.log('✅ Download helper active!');
+    console.log('👆 Click Download buttons normally.');
+    console.log('   Each click: PDF saves as file + blob tab opens (close it).');
+    console.log('   To stop: refresh (F5)');
+    console.log('');
+})();