import re
import sys

import openai

import llm_server
from llm_server import opts
from llm_server.config.config import ConfigLoader, config_default_vars, config_required_vars
from llm_server.custom_redis import redis
from llm_server.database.conn import database
from llm_server.database.database import get_number_of_rows
from llm_server.routes.queue import PriorityQueue


def load_config(config_path):
    config_loader = ConfigLoader(config_path, config_default_vars, config_required_vars)
    success, config, msg = config_loader.load_config()
    if not success:
        return success, config, msg

    # TODO: this is atrocious
    opts.auth_required = config['auth_required']
    opts.log_prompts = config['log_prompts']
    opts.frontend_api_client = config['frontend_api_client']
    opts.show_num_prompts = config['show_num_prompts']
    opts.show_uptime = config['show_uptime']
    opts.cluster = config['cluster']
    opts.show_total_output_tokens = config['show_total_output_tokens']
    opts.netdata_root = config['netdata_root']
    opts.simultaneous_requests_per_ip = config['simultaneous_requests_per_ip']
    opts.show_backend_info = config['show_backend_info']
    opts.max_new_tokens = config['max_new_tokens']
    opts.manual_model_name = config['manual_model_name']
    opts.llm_middleware_name = config['llm_middleware_name']
    opts.enable_openi_compatible_backend = config['enable_openi_compatible_backend']
    opts.openai_system_prompt = config['openai_system_prompt']
    opts.expose_openai_system_prompt = config['expose_openai_system_prompt']
    opts.enable_streaming = config['enable_streaming']
    opts.openai_api_key = config['openai_api_key']
    openai.api_key = opts.openai_api_key
    opts.admin_token = config['admin_token']
    opts.openai_expose_our_model = config['openai_epose_our_model']
    opts.openai_force_no_hashes = config['openai_force_no_hashes']
    opts.include_system_tokens_in_stats = config['include_system_tokens_in_stats']
    opts.openai_moderation_scan_last_n = config['openai_moderation_scan_last_n']
    opts.openai_org_name = config['openai_org_name']
    opts.openai_silent_trim = config['openai_silent_trim']
    opts.openai_moderation_enabled = config['openai_moderation_enabled']
    opts.show_backends = config['show_backends']
    opts.background_homepage_cacher = config['background_homepage_cacher']
    opts.openai_moderation_timeout = config['openai_moderation_timeout']
    opts.frontend_api_mode = config['frontend_api_mode']
    opts.prioritize_by_size = config['prioritize_by_size']

    # Scale the number of workers.
    for item in config['cluster']:
        opts.cluster_workers += item['concurrent_gens']

    llm_server.routes.queue.priority_queue = PriorityQueue([x['backend_url'] for x in config['cluster']])

    if opts.openai_expose_our_model and not opts.openai_api_key:
        print('If you set openai_epose_our_model to false, you must set your OpenAI key in openai_api_key.')
        sys.exit(1)

    opts.verify_ssl = config['verify_ssl']
    if not opts.verify_ssl:
        import urllib3

        urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

    if config['http_host']:
        http_host = re.sub(r'http(?:s)?://', '', config["http_host"])
        redis.set('http_host', http_host)
        redis.set('base_client_api', f'{http_host}/{opts.frontend_api_client.strip("/")}')

    database.init_db(config['mysql']['host'], config['mysql']['username'], config['mysql']['password'], config['mysql']['database'])

    if config['load_num_prompts']:
        redis.set('proompts', get_number_of_rows('prompts'))

    return success, config, msg


def parse_backends(config):
    if not config.get('cluster'):
        return False
    cluster = config.get('cluster')
    config = {}
    for item in cluster:
        backend_url = item['backend_url'].strip('/')
        item['backend_url'] = backend_url
        config[backend_url] = item
    return config