"""Render a compact live-status report from a running AtoCore instance.

This is intentionally read-only and stdlib-only so it can be used from a
fresh checkout, a cron job, or a Codex/Claude session without installing the
full app package. The output is meant to reduce docs drift: copy the report
into status docs only after it was generated from the live service.
"""

from __future__ import annotations

import argparse
import errno
import json
import os
import sys
import urllib.error
import urllib.request
from typing import Any


DEFAULT_BASE_URL = os.environ.get("ATOCORE_BASE_URL", "http://dalidou:8100").rstrip("/")
DEFAULT_TIMEOUT = int(os.environ.get("ATOCORE_TIMEOUT_SECONDS", "30"))
DEFAULT_AUTH_TOKEN = os.environ.get("ATOCORE_AUTH_TOKEN", "").strip()


def request_json(base_url: str, path: str, timeout: int, auth_token: str = "") -> dict[str, Any]:
    headers = {"Authorization": f"Bearer {auth_token}"} if auth_token else {}
    req = urllib.request.Request(f"{base_url}{path}", method="GET", headers=headers)
    with urllib.request.urlopen(req, timeout=timeout) as response:
        body = response.read().decode("utf-8")
        status = getattr(response, "status", None)
    payload = json.loads(body) if body.strip() else {}
    if not isinstance(payload, dict):
        payload = {"value": payload}
    if status is not None:
        payload["_http_status"] = status
    return payload


def collect_status(base_url: str, timeout: int, auth_token: str = "") -> dict[str, Any]:
    payload: dict[str, Any] = {"base_url": base_url}
    for name, path in {
        "health": "/health",
        "stats": "/stats",
        "projects": "/projects",
        "dashboard": "/admin/dashboard",
    }.items():
        try:
            payload[name] = request_json(base_url, path, timeout, auth_token)
        except (urllib.error.URLError, TimeoutError, OSError, json.JSONDecodeError) as exc:
            payload[name] = {"error": str(exc)}
    return payload


def render_markdown(status: dict[str, Any]) -> str:
    health = status.get("health", {})
    stats = status.get("stats", {})
    projects = status.get("projects", {}).get("projects", [])
    dashboard = status.get("dashboard", {})
    memories = dashboard.get("memories", {}) if isinstance(dashboard.get("memories"), dict) else {}
    project_state = dashboard.get("project_state", {}) if isinstance(dashboard.get("project_state"), dict) else {}
    interactions = dashboard.get("interactions", {}) if isinstance(dashboard.get("interactions"), dict) else {}
    pipeline = dashboard.get("pipeline", {}) if isinstance(dashboard.get("pipeline"), dict) else {}

    lines = [
        "# AtoCore Live Status",
        "",
        f"- base_url: `{status.get('base_url', '')}`",
        "- endpoint_http_statuses: "
        f"`health={health.get('_http_status', 'error')}, "
        f"stats={stats.get('_http_status', 'error')}, "
        f"projects={status.get('projects', {}).get('_http_status', 'error')}, "
        f"dashboard={dashboard.get('_http_status', 'error')}`",
        f"- service_status: `{health.get('status', 'unknown')}`",
        f"- code_version: `{health.get('code_version', health.get('version', 'unknown'))}`",
        f"- build_sha: `{health.get('build_sha', 'unknown')}`",
        f"- build_branch: `{health.get('build_branch', 'unknown')}`",
        f"- build_time: `{health.get('build_time', 'unknown')}`",
        f"- env: `{health.get('env', 'unknown')}`",
        f"- documents: `{stats.get('total_documents', 'unknown')}`",
        f"- chunks: `{stats.get('total_chunks', 'unknown')}`",
        f"- vectors: `{stats.get('total_vectors', health.get('vectors_count', 'unknown'))}`",
        f"- registered_projects: `{len(projects)}`",
        f"- active_memories: `{memories.get('active', 'unknown')}`",
        f"- candidate_memories: `{memories.get('candidates', 'unknown')}`",
        f"- interactions: `{interactions.get('total', 'unknown')}`",
        f"- project_state_entries: `{project_state.get('total', 'unknown')}`",
        f"- pipeline_last_run: `{pipeline.get('last_run', 'unknown')}`",
    ]

    if projects:
        lines.extend(["", "## Projects"])
        for project in projects:
            aliases = ", ".join(project.get("aliases", []))
            suffix = f" ({aliases})" if aliases else ""
            lines.append(f"- `{project.get('id', '')}`{suffix}")

    return "\n".join(lines) + "\n"


def main() -> int:
    parser = argparse.ArgumentParser(description="Render live AtoCore status")
    parser.add_argument("--base-url", default=DEFAULT_BASE_URL)
    parser.add_argument("--timeout", type=int, default=DEFAULT_TIMEOUT)
    parser.add_argument(
        "--auth-token",
        default=DEFAULT_AUTH_TOKEN,
        help="Bearer token; defaults to ATOCORE_AUTH_TOKEN when set",
    )
    parser.add_argument("--json", action="store_true", help="emit raw JSON")
    args = parser.parse_args()

    status = collect_status(args.base_url.rstrip("/"), args.timeout, args.auth_token)
    if args.json:
        output = json.dumps(status, indent=2, ensure_ascii=True) + "\n"
    else:
        output = render_markdown(status)

    try:
        sys.stdout.write(output)
    except BrokenPipeError:
        return 0
    except OSError as exc:
        if exc.errno in {errno.EINVAL, errno.EPIPE}:
            return 0
        raise
    return 0


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