✨ feat: implement API key authentication and user session management

web/lib/export/json.ts

@@ -0,0 +1,45 @@
+import type { Conversation, Message, ExportOptions, ContentBlock } from "../types";
+
+function filterContent(
+  content: ContentBlock[] | string,
+  options: ExportOptions
+): ContentBlock[] | string {
+  if (typeof content === "string") return content;
+
+  return content.filter((block) => {
+    if (block.type === "tool_use" || block.type === "tool_result") {
+      return options.includeToolUse;
+    }
+    return true;
+  });
+}
+
+function filterMessage(msg: Message, options: ExportOptions): Message {
+  return {
+    ...msg,
+    content: filterContent(msg.content, options),
+    createdAt: options.includeTimestamps ? msg.createdAt : 0,
+  };
+}
+
+export function toJSON(conv: Conversation, options: ExportOptions): string {
+  let messages = conv.messages;
+
+  if (options.dateRange) {
+    const { start, end } = options.dateRange;
+    messages = messages.filter((m) => m.createdAt >= start && m.createdAt <= end);
+  }
+
+  const output = {
+    id: conv.id,
+    title: conv.title,
+    model: conv.model,
+    createdAt: options.includeTimestamps ? conv.createdAt : undefined,
+    updatedAt: options.includeTimestamps ? conv.updatedAt : undefined,
+    messageCount: messages.length,
+    messages: messages.map((m) => filterMessage(m, options)),
+    exportedAt: new Date().toISOString(),
+  };
+
+  return JSON.stringify(output, null, 2);
+}