"""
Unified service configuration accessors.

This module is now a thin adapter over ``config.loader.get_app_config`` and
contains no independent parsing or precedence logic.
"""

from __future__ import annotations

import os
from typing import Any, Dict, Tuple

from config.loader import get_app_config
from config.schema import EmbeddingServiceConfig, RerankServiceConfig, TranslationServiceConfig


def get_translation_config() -> Dict[str, Any]:
    return get_app_config().services.translation.as_dict()


def get_embedding_config() -> EmbeddingServiceConfig:
    return get_app_config().services.embedding


def get_rerank_config() -> RerankServiceConfig:
    return get_app_config().services.rerank


def get_translation_base_url() -> str:
    return get_app_config().services.translation.endpoint


def get_translation_cache_config() -> Dict[str, Any]:
    return dict(get_app_config().services.translation.cache)


def get_embedding_text_base_url() -> str:
    provider_cfg = get_app_config().services.embedding.get_provider_config()
    base = provider_cfg.get("text_base_url")
    if not base:
        raise ValueError("Embedding text base_url is not configured")
    return str(base).rstrip("/")


def get_embedding_image_base_url() -> str:
    provider_cfg = get_app_config().services.embedding.get_provider_config()
    base = provider_cfg.get("image_base_url")
    if not base:
        raise ValueError("Embedding image base_url is not configured")
    return str(base).rstrip("/")


def get_embedding_backend_config() -> Tuple[str, Dict[str, Any]]:
    cfg = get_app_config().services.embedding
    return cfg.backend, cfg.get_backend_config()


def get_embedding_image_backend_config() -> Tuple[str, Dict[str, Any]]:
    cfg = get_app_config().services.embedding
    return cfg.image_backend, cfg.get_image_backend_config()


def get_rerank_backend_config() -> Tuple[str, Dict[str, Any]]:
    cfg = get_app_config().services.rerank
    backend = str(os.getenv("RERANK_BACKEND") or cfg.backend).strip()
    if backend != cfg.backend:
        backend_cfg = cfg.backends.get(backend)
        if backend_cfg is None:
            raise ValueError(f"Unknown rerank backend override from RERANK_BACKEND: {backend!r}")
        return backend, dict(backend_cfg)
    return cfg.backend, cfg.get_backend_config()


def get_rerank_base_url() -> str:
    provider_cfg = get_app_config().services.rerank.get_provider_config()
    base = provider_cfg.get("service_url") or provider_cfg.get("base_url")
    if not base:
        raise ValueError("Rerank service URL is not configured")
    return str(base).rstrip("/")


def get_rerank_service_url() -> str:
    return get_rerank_base_url()