#!/usr/bin/env python3
"""Install the Codex native adapter files into hidden project directories.

The Codex desktop sandbox may block agent-created writes into `.codex` and
`.agents/skills`. Run this script locally from the repository root when that
happens.
"""

from __future__ import annotations

import argparse
import shutil
from pathlib import Path


REPO_ROOT = Path(__file__).resolve().parent.parent
TEMPLATE_ROOT = REPO_ROOT / "codex_adapter_templates" / "codex"
CODEX_ROOT = REPO_ROOT / ".codex"
AGENTS_SKILLS = REPO_ROOT / ".agents" / "skills"
OPENCODE_SKILLS = REPO_ROOT / ".opencode" / "skills"


def copy_tree_contents(src: Path, dst: Path, *, force: bool) -> list[Path]:
    written: list[Path] = []
    if not src.exists():
        raise SystemExit(f"template source not found: {src}")
    dst.mkdir(parents=True, exist_ok=True)
    for item in src.rglob("*"):
        rel = item.relative_to(src)
        target = dst / rel
        if item.is_dir():
            target.mkdir(parents=True, exist_ok=True)
            continue
        if target.exists() and not force:
            continue
        target.parent.mkdir(parents=True, exist_ok=True)
        shutil.copy2(item, target)
        written.append(target)
    return written


def main() -> int:
    parser = argparse.ArgumentParser(description="Install Codex native adapter")
    parser.add_argument("--force", action="store_true", help="overwrite existing adapter files")
    parser.add_argument("--skip-skills", action="store_true", help="do not copy .opencode/skills to .agents/skills")
    args = parser.parse_args()

    codex_written = copy_tree_contents(TEMPLATE_ROOT, CODEX_ROOT, force=args.force)
    skills_written: list[Path] = []
    if not args.skip_skills:
        skills_written = copy_tree_contents(OPENCODE_SKILLS, AGENTS_SKILLS, force=args.force)

    print("Codex adapter installed.")
    print(f"  .codex files written: {len(codex_written)}")
    print(f"  .agents skills files written: {len(skills_written)}")
    if codex_written:
        for path in codex_written:
            print(f"    {path.relative_to(REPO_ROOT)}")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())