"""Offline sample by default; explicit opt-in enables captured build-config API."""
import os
from pathlib import Path
from src.build_config_client import build_config, BuildConfigError
from src.task_add_client import resolve_token

SOURCE = 'POST /api/adapt/task/build-config (discovered via capture); default templates/config_params.sample.yaml'
GAP = 'GAP: build-config API discovered via capture (autoconfig-capture-2026-10-16.md); live/实锤 needs token + API call and auth proof. Sample is dry-run draft only, NOT production-ready.'


def config_params_source():
    source = os.environ.get('CONFIG_PARAMS_SOURCE', '').strip()
    if source not in ('', 'sample', 'build-config'):
        raise BuildConfigError('unsupported CONFIG_PARAMS_SOURCE')
    if source == 'build-config':
        return 'build-config'
    if os.environ.get('ALLOW_BUILD_CONFIG') == '1':
        try:
            resolve_token()
        except (ValueError, OSError):
            pass
        else:
            return 'build-config'
    return 'sample'


def build_config_params(gpu_type=None, framework='vllm', task_type='text-generation'):
    """Return YAML; opted-in API failures propagate, never fall back to sample."""
    if config_params_source() == 'build-config':
        return build_config(gpu_type, framework, task_type)
    return (Path(__file__).resolve().parents[1] / 'templates/config_params.sample.yaml').read_text()