#
#  Copyright 2025 The InfiniFlow Authors. All Rights Reserved.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#


import logging
import threading
from enum import Enum

from pydantic import BaseModel
from typing import Any
from common.config_utils import read_config
from urllib.parse import urlparse


class ServiceConfigs:
    configs = dict

    def __init__(self):
        self.configs = []
        self.lock = threading.Lock()


SERVICE_CONFIGS = ServiceConfigs


class ServiceType(Enum):
    METADATA = "metadata"
    RETRIEVAL = "retrieval"
    MESSAGE_QUEUE = "message_queue"
    RAGFLOW_SERVER = "ragflow_server"
    TASK_EXECUTOR = "task_executor"
    FILE_STORE = "file_store"


class BaseConfig(BaseModel):
    id: int
    name: str
    host: str
    port: int
    service_type: str
    detail_func_name: str

    def to_dict(self) -> dict[str, Any]:
        return {'id': self.id, 'name': self.name, 'host': self.host, 'port': self.port,
                'service_type': self.service_type}


class MetaConfig(BaseConfig):
    meta_type: str

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        extra_dict = result['extra'].copy()
        extra_dict['meta_type'] = self.meta_type
        result['extra'] = extra_dict
        return result


class MySQLConfig(MetaConfig):
    username: str
    password: str

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        extra_dict = result['extra'].copy()
        extra_dict['username'] = self.username
        extra_dict['password'] = self.password
        result['extra'] = extra_dict
        return result


class PostgresConfig(MetaConfig):

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        return result


class RetrievalConfig(BaseConfig):
    retrieval_type: str

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        extra_dict = result['extra'].copy()
        extra_dict['retrieval_type'] = self.retrieval_type
        result['extra'] = extra_dict
        return result


class InfinityConfig(RetrievalConfig):
    db_name: str

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        extra_dict = result['extra'].copy()
        extra_dict['db_name'] = self.db_name
        result['extra'] = extra_dict
        return result


class ElasticsearchConfig(RetrievalConfig):
    username: str
    password: str

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        extra_dict = result['extra'].copy()
        extra_dict['username'] = self.username
        extra_dict['password'] = self.password
        result['extra'] = extra_dict
        return result


class MessageQueueConfig(BaseConfig):
    mq_type: str

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        extra_dict = result['extra'].copy()
        extra_dict['mq_type'] = self.mq_type
        result['extra'] = extra_dict
        return result


class RedisConfig(MessageQueueConfig):
    database: int
    password: str

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        extra_dict = result['extra'].copy()
        extra_dict['database'] = self.database
        extra_dict['password'] = self.password
        result['extra'] = extra_dict
        return result


class RabbitMQConfig(MessageQueueConfig):

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        return result


class RAGFlowServerConfig(BaseConfig):

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        return result


class TaskExecutorConfig(BaseConfig):

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        return result


class FileStoreConfig(BaseConfig):
    store_type: str

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        extra_dict = result['extra'].copy()
        extra_dict['store_type'] = self.store_type
        result['extra'] = extra_dict
        return result


class MinioConfig(FileStoreConfig):
    user: str
    password: str

    def to_dict(self) -> dict[str, Any]:
        result = super().to_dict()
        if 'extra' not in result:
            result['extra'] = dict()
        extra_dict = result['extra'].copy()
        extra_dict['user'] = self.user
        extra_dict['password'] = self.password
        result['extra'] = extra_dict
        return result


def load_configurations(config_path: str) -> list[BaseConfig]:
    raw_configs = read_config(config_path)
    configurations = []
    ragflow_count = 0
    id_count = 0
    for k, v in raw_configs.items():
        match (k):
            case "ragflow":
                name: str = f'ragflow_{ragflow_count}'
                host: str = v['host']
                http_port: int = v['http_port']
                config = RAGFlowServerConfig(id=id_count, name=name, host=host, port=http_port,
                                             service_type="ragflow_server",
                                             detail_func_name="check_ragflow_server_alive")
                configurations.append(config)
                id_count += 1
            case "es":
                name: str = 'elasticsearch'
                url = v['hosts']
                parsed = urlparse(url)
                host: str = parsed.hostname
                port: int = parsed.port
                username: str = v.get('username')
                password: str = v.get('password')
                config = ElasticsearchConfig(id=id_count, name=name, host=host, port=port, service_type="retrieval",
                                             retrieval_type="elasticsearch",
                                             username=username, password=password,
                                             detail_func_name="get_es_cluster_stats")
                configurations.append(config)
                id_count += 1

            case "infinity":
                name: str = 'infinity'
                url = v['uri']
                parts = url.split(':', 1)
                host = parts[0]
                port = int(parts[1])
                database: str = v.get('db_name', 'default_db')
                config = InfinityConfig(id=id_count, name=name, host=host, port=port, service_type="retrieval",
                                        retrieval_type="infinity",
                                        db_name=database, detail_func_name="get_infinity_status")
                configurations.append(config)
                id_count += 1
            case "minio":
                name: str = 'minio'
                url = v['host']
                parts = url.split(':', 1)
                host = parts[0]
                port = int(parts[1])
                user = v.get('user')
                password = v.get('password')
                config = MinioConfig(id=id_count, name=name, host=host, port=port, user=user, password=password,
                                     service_type="file_store",
                                     store_type="minio", detail_func_name="check_minio_alive")
                configurations.append(config)
                id_count += 1
            case "redis":
                name: str = 'redis'
                url = v['host']
                parts = url.split(':', 1)
                host = parts[0]
                port = int(parts[1])
                password = v.get('password')
                db: int = v.get('db')
                config = RedisConfig(id=id_count, name=name, host=host, port=port, password=password, database=db,
                                     service_type="message_queue", mq_type="redis", detail_func_name="get_redis_info")
                configurations.append(config)
                id_count += 1
            case "mysql":
                name: str = 'mysql'
                host: str = v.get('host')
                port: int = v.get('port')
                username = v.get('user')
                password = v.get('password')
                config = MySQLConfig(id=id_count, name=name, host=host, port=port, username=username, password=password,
                                     service_type="meta_data", meta_type="mysql", detail_func_name="get_mysql_status")
                configurations.append(config)
                id_count += 1
            case "admin":
                pass
            case _:
                logging.warning(f"Unknown configuration key: {k}")
                continue

    return configurations