# -*- coding: utf-8 -*-
"""
AZA Dev Status – lightweight console viewer.

Polls /api/project/status every 5 seconds and displays
the current project state plus the last 15 history entries.
Exit cleanly with Ctrl+C.
"""

from __future__ import annotations

import json
import os
import sys
import time
from pathlib import Path
from urllib.request import Request, urlopen
from urllib.error import URLError

_BASE_DIR = Path(__file__).resolve().parent.parent
_TOKEN_FILE = _BASE_DIR / "backend_token.txt"
_HISTORY_FILE = _BASE_DIR / "project_status_history.jsonl"
_API_URL = "http://127.0.0.1:8000/api/project/status"
_REFRESH = 5


def _read_token() -> str:
    tok = os.environ.get("MEDWORK_API_TOKEN", "").strip()
    if tok:
        return tok
    try:
        with open(str(_TOKEN_FILE), "r", encoding="utf-8") as f:
            return (f.readline() or "").strip()
    except Exception:
        return ""


def _fetch_status(token: str) -> dict | None:
    try:
        req = Request(_API_URL, headers={"X-API-Token": token})
        with urlopen(req, timeout=4) as resp:
            return json.loads(resp.read().decode("utf-8", errors="replace"))
    except Exception:
        return None


def _read_history(n: int = 15) -> list[str]:
    try:
        with open(str(_HISTORY_FILE), "r", encoding="utf-8") as f:
            lines = f.readlines()
        return lines[-n:]
    except Exception:
        return []


def _clear():
    os.system("cls" if os.name == "nt" else "clear")


def _render(data: dict | None, history: list[str]):
    _clear()
    print("=" * 60)
    print("  AZA Dev Status")
    print("=" * 60)

    if data is None:
        print("\n  Waiting for backend ...\n")
    else:
        fields = [
            ("Project",      data.get("project", "")),
            ("Phase",        data.get("phase", "")),
            ("Current Step", data.get("current_step", "")),
            ("Next Step",    data.get("next_step", "")),
            ("Last Update",  data.get("last_update", "")),
            ("Updated At",   data.get("updated_at", "")),
        ]
        print()
        for label, val in fields:
            print(f"  {label:14s}: {val}")

        notes = data.get("notes", "")
        if notes:
            print(f"\n  Notes: {notes}")

    print()
    print("-" * 60)
    print("  History (last 15)")
    print("-" * 60)

    if not history:
        print("  (no history yet)")
    else:
        for line in history:
            line = line.strip()
            if not line:
                continue
            try:
                entry = json.loads(line)
                ts = entry.get("ts_utc", "")[:19].replace("T", " ")
                phase = entry.get("phase", "")
                step = entry.get("current_step", "")
                print(f"  {ts}  {phase:12s}  {step}")
            except Exception:
                pass

    print()
    print(f"  Refresh every {_REFRESH}s | Ctrl+C to exit")
    print("=" * 60)


def main():
    if os.name == "nt":
        try:
            os.system("title AZA Dev Status")
        except Exception:
            pass

    token = _read_token()
    if not token:
        print("WARNING: No API token found. Requests will fail (401).")

    try:
        while True:
            data = _fetch_status(token)
            history = _read_history()
            _render(data, history)
            time.sleep(_REFRESH)
    except KeyboardInterrupt:
        print("\n  Bye.")
        sys.exit(0)


if __name__ == "__main__":
    main()