claude-code

web/lib/export/markdown.ts

@@ -0,0 +1,78 @@
+import type { Conversation, Message, ExportOptions } from "../types";
+import { extractTextContent } from "../utils";
+
+function renderMessage(msg: Message, options: ExportOptions): string {
+  const parts: string[] = [];
+
+  const roleLabel =
+    msg.role === "user"
+      ? "**User**"
+      : msg.role === "assistant"
+      ? "**Assistant**"
+      : `**${msg.role}**`;
+
+  parts.push(`### ${roleLabel}`);
+
+  if (options.includeTimestamps) {
+    parts.push(`_${new Date(msg.createdAt).toLocaleString()}_\n`);
+  }
+
+  if (typeof msg.content === "string") {
+    parts.push(msg.content);
+  } else {
+    for (const block of msg.content) {
+      if (block.type === "text") {
+        parts.push(block.text);
+      } else if (block.type === "tool_use" && options.includeToolUse) {
+        parts.push(
+          `\`\`\`tool-use\n// Tool: ${block.name}\n${JSON.stringify(block.input, null, 2)}\n\`\`\``
+        );
+      } else if (block.type === "tool_result" && options.includeToolUse) {
+        const raw =
+          typeof block.content === "string"
+            ? block.content
+            : extractTextContent(block.content);
+        const truncated =
+          !options.includeFileContents && raw.length > 500
+            ? raw.slice(0, 500) + "\n…[truncated]"
+            : raw;
+        parts.push(
+          `\`\`\`tool-result${block.is_error ? " error" : ""}\n${truncated}\n\`\`\``
+        );
+      }
+    }
+  }
+
+  return parts.join("\n\n");
+}
+
+export function toMarkdown(conv: Conversation, options: ExportOptions): string {
+  const lines: string[] = [
+    `# ${conv.title}`,
+    "",
+    "---",
+    ...(options.includeTimestamps
+      ? [`**Created:** ${new Date(conv.createdAt).toISOString()}`]
+      : []),
+    ...(conv.model ? [`**Model:** ${conv.model}`] : []),
+    `**Messages:** ${conv.messages.length}`,
+    "---",
+    "",
+  ];
+
+  let messages = conv.messages;
+  if (options.dateRange) {
+    const { start, end } = options.dateRange;
+    messages = messages.filter((m) => m.createdAt >= start && m.createdAt <= end);
+  }
+
+  for (const msg of messages) {
+    lines.push(renderMessage(msg, options));
+    lines.push("");
+  }
+
+  lines.push("---");
+  lines.push("*Exported from Claude Code*");
+
+  return lines.join("\n");
+}