from __future__ import annotations

import importlib.util
import json
import sys
from pathlib import Path


SCRIPT_PATH = (
    Path(__file__).resolve().parents[2]
    / "optional-skills"
    / "migration"
    / "openclaw-migration"
    / "scripts"
    / "openclaw_to_hermes.py"
)


def load_module():
    spec = importlib.util.spec_from_file_location("openclaw_to_hermes", SCRIPT_PATH)
    module = importlib.util.module_from_spec(spec)
    assert spec.loader is not None
    sys.modules[spec.name] = module
    spec.loader.exec_module(module)
    return module


def test_extract_markdown_entries_promotes_heading_context():
    mod = load_module()
    text = """# MEMORY.md - Long-Term Memory

## Tyler Williams

- Founder of VANTA Research
- Timezone: America/Los_Angeles

### Active Projects

- Hermes Agent
"""
    entries = mod.extract_markdown_entries(text)
    assert "Tyler Williams: Founder of VANTA Research" in entries
    assert "Tyler Williams: Timezone: America/Los_Angeles" in entries
    assert "Tyler Williams > Active Projects: Hermes Agent" in entries


def test_merge_entries_respects_limit_and_reports_overflow():
    mod = load_module()
    existing = ["alpha"]
    incoming = ["beta", "gamma is too long"]
    merged, stats, overflowed = mod.merge_entries(existing, incoming, limit=12)
    assert merged == ["alpha", "beta"]
    assert stats["added"] == 1
    assert stats["overflowed"] == 1
    assert overflowed == ["gamma is too long"]


def test_migrator_copies_skill_and_merges_allowlist(tmp_path: Path):
    mod = load_module()
    source = tmp_path / ".openclaw"
    target = tmp_path / ".hermes"

    (source / "workspace" / "skills" / "demo-skill").mkdir(parents=True)
    (source / "workspace" / "skills" / "demo-skill" / "SKILL.md").write_text(
        "---\nname: demo-skill\ndescription: demo\n---\n\nbody\n",
        encoding="utf-8",
    )
    (source / "exec-approvals.json").write_text(
        json.dumps(
            {
                "agents": {
                    "*": {
                        "allowlist": [
                            {"pattern": "/usr/bin/*"},
                            {"pattern": "/home/test/**"},
                        ]
                    }
                }
            }
        ),
        encoding="utf-8",
    )
    (target / "config.yaml").write_text("command_allowlist:\n  - /usr/bin/*\n", encoding="utf-8")

    migrator = mod.Migrator(
        source_root=source,
        target_root=target,
        execute=True,
        workspace_target=None,
        overwrite=False,
        migrate_secrets=False,
        output_dir=target / "migration-report",
    )
    report = migrator.migrate()

    imported_skill = target / "skills" / mod.SKILL_CATEGORY_DIRNAME / "demo-skill" / "SKILL.md"
    assert imported_skill.exists()
    assert "/home/test/**" in (target / "config.yaml").read_text(encoding="utf-8")
    assert report["summary"]["migrated"] >= 2


def test_migrator_optionally_imports_supported_secrets_and_messaging_settings(tmp_path: Path):
    mod = load_module()
    source = tmp_path / ".openclaw"
    target = tmp_path / ".hermes"

    (source / "credentials").mkdir(parents=True)
    (source / "openclaw.json").write_text(
        json.dumps(
            {
                "agents": {"defaults": {"workspace": "/tmp/openclaw-workspace"}},
                "channels": {"telegram": {"botToken": "123:abc"}},
            }
        ),
        encoding="utf-8",
    )
    (source / "credentials" / "telegram-default-allowFrom.json").write_text(
        json.dumps({"allowFrom": ["111", "222"]}),
        encoding="utf-8",
    )
    target.mkdir()

    migrator = mod.Migrator(
        source_root=source,
        target_root=target,
        execute=True,
        workspace_target=None,
        overwrite=False,
        migrate_secrets=True,
        output_dir=target / "migration-report",
    )
    migrator.migrate()

    env_text = (target / ".env").read_text(encoding="utf-8")
    assert "MESSAGING_CWD=/tmp/openclaw-workspace" in env_text
    assert "TELEGRAM_ALLOWED_USERS=111,222" in env_text
    assert "TELEGRAM_BOT_TOKEN=123:abc" in env_text