import { spawn } from "node:child_process";
import { mkdtempSync, readFileSync, rmSync, writeFileSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
export async function editInExternalEditor(options) {
    const directory = mkdtempSync(join(tmpdir(), "pi-editor-"));
    const filePath = join(directory, "prompt.md");
    try {
        writeFileSync(filePath, options.content, "utf-8");
        const [editor, ...editorArgs] = options.command.split(" ");
        process.stdout.write(`Launching external editor: ${options.command}\nPi will resume when the editor exits.\n`);
        // Do not use spawnSync here. On Windows, synchronous child_process calls can keep
        // Node/libuv's console input read active after the parent pauses stdin, racing
        // vim/nvim for the console input buffer until Ctrl+C cancels the pending read.
        const exitCode = await new Promise((resolve) => {
            const child = spawn(editor, [...editorArgs, filePath], {
                stdio: "inherit",
                shell: process.platform === "win32",
            });
            child.on("error", () => resolve(null));
            child.on("close", (code) => resolve(code));
        });
        if (exitCode !== 0) {
            return { status: "failed" };
        }
        return { status: "complete", content: readFileSync(filePath, "utf-8").replace(/\n$/, "") };
    }
    finally {
        try {
            rmSync(directory, { recursive: true, force: true });
        }
        catch {
            // Cleanup is best effort.
        }
    }
}
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