"""Local Docker container management and URL probe endpoints."""
from __future__ import annotations

import os
from pathlib import Path
from urllib.parse import quote

import requests
from fastapi import APIRouter, HTTPException

from core.docker_client import _docker_get_json, _docker_post
from core.validation import _normalize_service_url

router = APIRouter()

_LOCAL_CONTAINER_DEFS: list[dict] = [
    {"name": "faster-qwen3-tts-voiceclone",  "label": "Qwen3 TTS · Voice Clone",   "role": "tts", "port": 8020, "stack": "faster-qwen3-tts-dgx-spark-voice-design", "image": "martinb78/faster-qwen3-tts-dgx-spark:v4",        "repo": "https://github.com/mARTin-B78/dgx-spark-faster-qwen3-tts", "description": "WAV voice cloning. Scans active_voices at startup — restart after adding or editing voices."},
    {"name": "faster-qwen3-tts-voicedesign", "label": "Qwen3 TTS · Voice Design",  "role": "tts", "port": 8021, "stack": "faster-qwen3-tts-dgx-spark-voice-design", "image": "martinb78/faster-qwen3-tts-dgx-spark:v4",        "repo": "https://github.com/mARTin-B78/dgx-spark-faster-qwen3-tts", "description": "Instruction-based voice design. Describe a voice in words — no WAV needed."},
    {"name": "faster-qwen3-tts-customvoice", "label": "Qwen3 TTS · Custom Voice",  "role": "tts", "port": 8022, "stack": "faster-qwen3-tts-dgx-spark-voice-design", "image": "martinb78/faster-qwen3-tts-dgx-spark:v4",        "repo": "https://github.com/mARTin-B78/dgx-spark-faster-qwen3-tts", "description": "Style control over configured premium speakers such as Ryan, Vivian, and Serena."},
    {"name": "faster-qwen3-tts-streaming",   "label": "Qwen3 TTS · Streaming",     "role": "tts", "port": 8023, "stack": "faster-qwen3-tts-dgx-spark-voice-design", "image": "martinb78/qwen3-tts-streaming-dgx-spark:latest", "repo": "https://github.com/mARTin-B78/dgx-spark-faster-qwen3-tts", "description": "Low-latency progressive WAV streaming for voice clone voices."},
    {"name": "parakeet-asr",                 "label": "NVIDIA Parakeet ASR",        "role": "stt", "port": 8090, "stack": "nvidia-speech-gateway",                  "image": "parakeet-tdt-v3-spark:latest",                   "repo": "https://github.com/mARTin-B78/dgx-spark-parakeet-asr",     "description": "NVIDIA Parakeet GPU-accelerated speech recognition on port 8090."},
    {"name": "magpie-tts",                   "label": "NVIDIA Magpie TTS",          "role": "tts", "port": 8091, "stack": "nvidia-speech-gateway",                  "image": "nvcr.io/nim/nvidia/magpie-tts-multilingual:latest","repo": "https://github.com/mARTin-B78/dgx-spark-parakeet-asr",     "description": "NVIDIA neural TTS. GPU-accelerated, high-quality multilingual synthesis."},
    {"name": "parakeet-rnnt-nim",            "label": "NVIDIA Parakeet RNNT NIM",   "role": "stt", "port": 8092, "stack": "nvidia-speech-gateway",                  "image": "nvcr.io/nim/nvidia/parakeet-1b-rnnt-multilingual:latest","repo": "https://github.com/mARTin-B78/dgx-spark-parakeet-asr",  "description": "NVIDIA Parakeet RNNT NIM multilingual ASR on port 8092."},
]


def _container_status(name: str) -> dict:
    try:
        code, data = _docker_get_json(f"/containers/{quote(name, safe='')}/json")
        if code == 404:
            return {"status": "not_found"}
        if code == 200 and isinstance(data, dict):
            state = data.get("State", {})
            return {
                "status": state.get("Status", "unknown"),
                "running": state.get("Running", False),
                "paused": state.get("Paused", False),
                "started_at": state.get("StartedAt", ""),
                "image": data.get("Config", {}).get("Image", ""),
            }
        return {"status": "error", "detail": f"HTTP {code}"}
    except Exception as e:
        return {"status": "error", "detail": str(e)}


@router.get("/api/local-containers")
async def get_local_containers():
    sock_ok = Path(os.environ.get("DOCKER_SOCKET", "/var/run/docker.sock")).exists()
    results = []
    for defn in _LOCAL_CONTAINER_DEFS:
        entry = {k: v for k, v in defn.items()}
        if sock_ok:
            entry.update(_container_status(defn["name"]))
        else:
            entry["status"] = "no_socket"
        results.append(entry)
    return {"containers": results, "socket_available": sock_ok}


@router.post("/api/local-containers/{name}/start")
async def start_local_container(name: str):
    if not any(c["name"] == name for c in _LOCAL_CONTAINER_DEFS):
        raise HTTPException(404, f"Unknown container: {name}")
    try:
        code, _ = _docker_post(f"/containers/{quote(name, safe='')}/start")
    except Exception as e:
        raise HTTPException(502, f"Docker start failed: {e}")
    if code not in (204, 304):
        raise HTTPException(502, f"Docker API returned HTTP {code}")
    return {"ok": True, "name": name, **_container_status(name)}


@router.post("/api/local-containers/{name}/stop")
async def stop_local_container(name: str):
    if not any(c["name"] == name for c in _LOCAL_CONTAINER_DEFS):
        raise HTTPException(404, f"Unknown container: {name}")
    try:
        code, _ = _docker_post(f"/containers/{quote(name, safe='')}/stop?t=10")
    except Exception as e:
        raise HTTPException(502, f"Docker stop failed: {e}")
    if code not in (204, 304):
        raise HTTPException(502, f"Docker API returned HTTP {code}")
    return {"ok": True, "name": name, **_container_status(name)}


@router.post("/api/local-containers/{name}/restart")
async def restart_local_container(name: str):
    if not any(c["name"] == name for c in _LOCAL_CONTAINER_DEFS):
        raise HTTPException(404, f"Unknown container: {name}")
    try:
        code, _ = _docker_post(f"/containers/{quote(name, safe='')}/restart?t=10")
    except Exception as e:
        raise HTTPException(502, f"Docker restart failed: {e}")
    if code not in (204, 304):
        raise HTTPException(502, f"Docker API returned HTTP {code}")
    return {"ok": True, "name": name, **_container_status(name)}


@router.get("/api/probe-url")
async def probe_url(url: str, type: str = ""):
    """Server-side API probe — checks service-specific endpoints and validates JSON responses."""
    base = _normalize_service_url(url).rstrip("/")
    for _suffix in ("/v1", "/api/v1"):
        if base.endswith(_suffix):
            base = base[: -len(_suffix)]
            break
    hdrs = {"User-Agent": "TTS-Voice-Creator/probe"}

    if type == "llm":
        checks = [("/v1/models", "data"), ("/api/tags", "models"), ("/api/version", None)]
    elif type == "stt":
        checks = [("/health", None), ("/v1/models", "data"), ("/v1/audio/transcriptions", None)]
    elif type == "tts":
        checks = [("/health", None), ("/v1/health", None), ("/v1/audio/voices", None), ("/speakers", None), ("/voices", None)]
    else:
        checks = [("", None)]

    last_err = "No response"
    for path, json_key in checks:
        try:
            r = requests.get(base + path, timeout=5, headers=hdrs, allow_redirects=True)
            if r.status_code >= 500:
                last_err = f"HTTP {r.status_code} on {path or '/'}"
                continue
            if r.status_code >= 400 and path:
                continue
            if json_key:
                try:
                    data = r.json()
                    if json_key not in data:
                        last_err = f"Unexpected response from {path} (missing '{json_key}')"
                        continue
                except Exception:
                    last_err = f"{path} returned non-JSON (HTTP {r.status_code})"
                    continue
            return {"ok": True, "status": r.status_code, "endpoint": path or "/"}
        except requests.exceptions.ConnectionError:
            return {"ok": False, "error": "Connection refused"}
        except requests.exceptions.Timeout:
            return {"ok": False, "error": "Timeout (5 s)"}
        except Exception as e:
            last_err = str(e)
    return {"ok": False, "error": last_err}