#!/usr/bin/env python3
"""
Spotify MCP Server Launcher for OpenClaw.
Ensures credentials.json is configured from SPOTIFY_REFRESH_TOKEN in a writable HOME,
pins mcp<2 to avoid FastMCP renaming breakage in mcp 2.x, then executes uvx mcp-server-spotify.
"""

import json
import os
import sys
from pathlib import Path


def get_writable_home() -> Path:
    candidates = [
        Path("/home/node/.openclaw/spotify-home"),
        Path("/tmp/spotify-home"),
    ]
    for p in candidates:
        try:
            p.mkdir(parents=True, exist_ok=True)
            test_file = p / ".write_test"
            test_file.write_text("ok")
            test_file.unlink()
            return p
        except Exception:
            continue
    return Path("/tmp")


def main():
    refresh_token = os.environ.get("SPOTIFY_REFRESH_TOKEN")

    spotify_home = get_writable_home()
    os.environ["HOME"] = str(spotify_home)

    creds_dir = spotify_home / ".spotify-mcp"
    creds_file = creds_dir / "credentials.json"

    if refresh_token:
        try:
            creds_dir.mkdir(parents=True, exist_ok=True)
            creds = {
                "access_token": "init",
                "refresh_token": refresh_token,
                "expires_at": 0,
            }
            creds_file.write_text(json.dumps(creds, indent=2))
            try:
                creds_file.chmod(0o600)
            except Exception:
                pass
        except Exception as e:
            print(f"[run_spotify_mcp] Warning: Could not write credentials file: {e}", file=sys.stderr)

    # Launch mcp-server-spotify via uvx with pinned mcp<2
    os.execvp("uvx", ["uvx", "--with", "mcp<2", "mcp-server-spotify"])


if __name__ == "__main__":
    main()