release: 0.2.0421.2

src/content/index.ts

@@ -6,8 +6,11 @@ import {
 interface ChromeRuntimeLike {
   getURL?: (path: string) => string;
   id?: string;
+  sendMessage?: (message: unknown) => void | Promise<unknown>;
 }
 
+const DOWNLOAD_MARKET_CSV_MESSAGE = "download-market-csv";
+
 interface BootContentScriptOptions {
   createMarketController?: (
     options: CreateMarketControllerOptions
@@ -32,6 +35,13 @@ export async function bootContentScript(
 
   return controllerFactory({
     document: currentDocument,
+    onCsvReady: (csv: string) => {
+      if (requestCsvDownload(csv)) {
+        return;
+      }
+
+      downloadCsv(currentDocument, currentWindow, csv);
+    },
     window: currentWindow
   });
 }
@@ -72,6 +82,43 @@ function bootstrapContentScript() {
 
 bootstrapContentScript();
 
+function requestCsvDownload(csv: string): boolean {
+  const runtime = (
+    globalThis as typeof globalThis & {
+      chrome?: { runtime?: ChromeRuntimeLike };
+    }
+  ).chrome?.runtime;
+
+  if (!runtime?.id || typeof runtime.sendMessage !== "function") {
+    return false;
+  }
+
+  runtime.sendMessage({
+    csv,
+    filename: `star-chart-search-enhancer-${formatTimestampForFilename()}.csv`,
+    type: DOWNLOAD_MARKET_CSV_MESSAGE
+  });
+  return true;
+}
+
+function downloadCsv(document: Document, window: Window, csv: string): void {
+  const blob = new Blob(["\uFEFF", csv], {
+    type: "text/csv;charset=utf-8"
+  });
+  const objectUrl = window.URL.createObjectURL(blob);
+  const link = document.createElement("a");
+  link.href = objectUrl;
+  link.download = `star-chart-search-enhancer-${formatTimestampForFilename()}.csv`;
+  document.body.appendChild(link);
+  link.click();
+  link.remove();
+  window.URL.revokeObjectURL(objectUrl);
+}
+
+function formatTimestampForFilename(): string {
+  return new Date().toISOString().replace(/[:.]/g, "-");
+}
+
 function installMarketPageBridge(document: Document) {
   if (
     document.documentElement.querySelector(