import psycopg2
from psycopg2.extras import RealDictCursor
import json
from typing import Dict, List, Union, Optional
from dataclasses import dataclass, asdict
from datetime import datetime
import re


@dataclass
class ModelClassInfo:
    index: int
    name: str
    english_name: Optional[str] = None
    description: Optional[str] = None


@dataclass
class ClassConfig:
    filter_indices: List[int]
    class_indices: List[int]
    classes: List[ModelClassInfo]


@dataclass
class ModelInfo:
    id: int
    yolo_version: str
    model_path: str
    func_description: Optional[str] = None


@dataclass
class ModelMetadata:
    total_classes: int
    created_at: Optional[datetime] = None
    updated_at: Optional[datetime] = None


@dataclass
class ModelData:
    id: int
    yolo_version: str
    model_path: str
    repeat_dis: float
    func_description: Optional[str]
    filter_indices: List[int]
    class_indices: List[int]
    conf: float
    classes: List[ModelClassInfo]
    total_classes: int
    cls_names: {}
    filtered_cls_en_dict: {}
    cls_en_dict: {}
    filtered_cls_dict: {}
    cls_dict: {}
    cls_str_dict: {}
    cls_zn_to_eh_dict: {}
    allowed_classes: []
    created_at: Optional[datetime] = None
    updated_at: Optional[datetime] = None


@dataclass
class MqttData:
    mqtt_id: int
    mqtt_ip: str
    mqtt_port: int
    mqtt_topic: str
    mqtt_username: str
    mqtt_pass: str
    mqtt_description: str
    org_code: str
    mqtt_type: str


@dataclass
class Device:
    dname: str
    sn: str
    orgcode: int
    lat: float
    lng: float
    height: float


@dataclass
class ModelConfiguration:
    model_info: ModelInfo
    class_config: ClassConfig
    metadata: ModelMetadata


@dataclass
class Dataset:
    id: int
    resource_original_path: str
    pic_name: str
    local_path: str
    label_name: str
    label_content: str
    label_txt_path: str


@dataclass
class Labels:
    id: int
    resource_original_path: str
    resource_id: int
    label_set_id: int
    label_ids: int
    annotation_data: str


@dataclass
class Label_Yaml:
    id: int
    id_order:int
    name: str
    e_name: str


class DateTimeEncoder(json.JSONEncoder):
    """自定义JSON编码器，用于处理datetime对象"""

    def default(self, obj):
        if isinstance(obj, datetime):
            return obj.isoformat()
        return super().default(obj)


class ModelConfigDAO:
    def __init__(self, db_params: Dict[str, str]):
        """
        初始化数据库连接
        参数:
            db_params: 数据库连接参数，包含:
                - dbname: 数据库名
                - user: 用户名
                - password: 密码
                - host: 主机地址
                - port: 端口号
        """
        self.db_params = db_params

    def insert_config(self, config: ModelConfiguration) -> bool:
        """
        插入新的模型配置

        参数:
            config: 要插入的模型配置对象

        返回:
            是否插入成功
        """
        if not isinstance(config, ModelConfiguration):
            raise ValueError("Invalid configuration type")

        # 将对象转换为数据库格式
        data = self._config_to_db_format(config)

        query = """
        INSERT INTO ai_model (
            model_id, filter_cls, func_description, 
            yolo_version, path, cls_index, cls, cls_en, cls_description
        ) VALUES (
            %(model_id)s, %(filter_cls)s, %(func_description)s,
            %(yolo_version)s, %(path)s, %(cls_index)s, %(cls)s, %(cls_en)s, %(cls_description)s
        )
        """

        try:
            with psycopg2.connect(**self.db_params) as conn:
                with conn.cursor() as cur:
                    cur.execute(query, data)
                    conn.commit()
            return True
        except psycopg2.Error as e:
            print(f"Database insert error: {e}")
            return False

    def update_config(self, config: ModelConfiguration) -> bool:
        """
        更新现有的模型配置

        参数:
            config: 要更新的模型配置对象

        返回:
            是否更新成功
        """
        if not isinstance(config, ModelConfiguration):
            raise ValueError("Invalid configuration type")

        data = self._config_to_db_format(config)

        query = """
        UPDATE ai_model SET
            filter_cls = %(filter_cls)s,
            func_description = %(func_description)s,
            yolo_version = %(yolo_version)s,
            path = %(path)s,
            cls_index = %(cls_index)s,
            cls = %(cls)s,
            cls_en = %(cls_en)s,
            cls_description = %(cls_description)s
        WHERE model_id = %(model_id)s
        """

        try:
            with psycopg2.connect(**self.db_params) as conn:
                with conn.cursor() as cur:
                    cur.execute(query, data)
                    conn.commit()
            return True
        except psycopg2.Error as e:
            print(f"Database update error: {e}")
            return False

    def get_datasets(self, bz_training_task_id: int) -> List[Dataset]:
        """
        获取并解析模型配置

        参数:
            model_id: 模型功能ID


        返回:
            结构化的模型配置或None（如果未找到）
        """
        query = """
select bpra.id,bpra.resource_original_path  from bz_training_dataset a left join bz_training_task  b on b.id=a.trainingtaskid 
left join bz_datasets  c on c.id =a.datasetid 
left join bz_dataset_project_relations d on d.data_set_id =c.id
left join bz_project_resource_assignments bpra on bpra.project_id =d.project_id 
where b.id=%s
            """

        try:
            with psycopg2.connect(**self.db_params) as conn:
                with conn.cursor(cursor_factory=RealDictCursor) as cur:
                    cur.execute(query, (bz_training_task_id,))
                    rows = cur.fetchall()
                    return [self._db_row_to_dataset(row) for row in rows]  # 转换为Dataset列表
        except psycopg2.Error as e:
            print(f"Database query error: {e}")
            return None

    def get_labels(self, bz_training_task_id: int) -> List[Labels]:
        """
        获取并解析模型配置

        参数:
            model_id: 模型功能ID


        返回:
            结构化的模型配置或None（如果未找到）
        """
        query = """
select bpra.id,bpra.resource_original_path ,bar.resource_id , bar.label_set_id ,bar.label_id ,bar.annotation_data  from bz_training_dataset a left join bz_training_task  b on b.id=a.trainingtaskid 
left join bz_datasets  c on c.id =a.datasetid 
left join bz_dataset_project_relations d on d.data_set_id =c.id
left join bz_project_resource_assignments bpra on bpra.project_id =d.project_id 
left join bz_annotation_record bar on bar.task_assignment_id =bpra.id
    where b.id=%s
                """

        try:
            with psycopg2.connect(**self.db_params) as conn:
                with conn.cursor(cursor_factory=RealDictCursor) as cur:
                    cur.execute(query, (bz_training_task_id,))
                    rows = cur.fetchall()
                    return [self._db_row_to_labels(row) for row in rows]  # 转换为Dataset列表
        except psycopg2.Error as e:
            print(f"Database query error: {e}")
            return None

    def get_label_yaml(self, bz_training_task_id: int) -> List[Label_Yaml]:
        """
        获取并解析模型配置

        参数:
            model_id: 模型功能ID


        返回:
            结构化的模型配置或None（如果未找到）
        """
        query = """
select id,name,e_name from bz_labels where id in (select distinct(bar.label_id) AS id   from bz_training_dataset a left join bz_training_task  b on b.id=a.trainingtaskid 
left join bz_datasets  c on c.id =a.datasetid 
left join bz_dataset_project_relations d on d.data_set_id =c.id
left join bz_project_resource_assignments bpra on bpra.project_id =d.project_id 
left join bz_annotation_record bar on bar.task_assignment_id =bpra.id
  where b.id=%s
)
                """

        try:
            with psycopg2.connect(**self.db_params) as conn:
                with conn.cursor(cursor_factory=RealDictCursor) as cur:
                    cur.execute(query, (bz_training_task_id,))
                    rows = cur.fetchall()
                    return [self._db_row_to_label_yaml(row) for row in rows]  # 转换为Dataset列表
        except psycopg2.Error as e:
            print(f"Database query error: {e}")
            return None

    def _config_to_db_format(self, config: ModelConfiguration) -> Dict:
        """将配置对象转换为数据库格式"""
        return {
            "model_id": config.model_info.id,
            "filter_cls": config.class_config.filter_indices,
            "func_description": config.model_info.func_description,
            "yolo_version": config.model_info.yolo_version,
            "path": config.model_info.model_path,
            "cls_index": config.class_config.class_indices,
            "cls": [cls_info.name for cls_info in config.class_config.classes],
            "cls_en": [cls_info.english_name for cls_info in config.class_config.classes],
            "cls_description": ", ".join(
                filter(None, [cls_info.description for cls_info in config.class_config.classes])
            )
        }

    def insert_train_pid(self, task_id, train_pid) -> bool:
        """
        插入新的训练记录（task_id 和 train_pid）

        参数:
            config: 要插入的模型配置对象（需包含 task_id 和 train_pid）

        返回:
            是否插入成功
        """

        insert_sql = """
        INSERT INTO bz_train_record (
            task_id, train_pid,create_time
        ) VALUES (
            %s, %s,now()
        )
        """

        try:
            with psycopg2.connect(**self.db_params) as conn:
                with conn.cursor() as cur:
                    cur.execute(insert_sql, (task_id, train_pid))
                    conn.commit()
            return True
        except psycopg2.Error as e:
            print(f"Database insert error: {e}")
            return False

    def _db_row_to_dataset(self, row: Dict) -> ModelConfiguration:

        return Dataset(
            id=row["id"],
            resource_original_path=row["resource_original_path"],
            pic_name=None,
            local_path=None,
            label_name=None,
            label_content="",
            label_txt_path=None
        )

    def _db_row_to_labels(self, row: Dict) -> ModelConfiguration:

        return Labels(
            id=row["id"],
            resource_original_path=row["resource_original_path"],
            resource_id=row["resource_id"],
            label_set_id=row["label_set_id"],
            label_ids=row["label_id"],
            annotation_data=row["annotation_data"]
        )

    def _db_row_to_label_yaml(self, row: Dict) -> ModelConfiguration:

        return Label_Yaml(
            id=row["id"],
            id_order=-1,
            name=row["name"],
            e_name=row["e_name"]

        )