from clickhouse_connect.driver import AsyncClient
from app.log import logger


class ClickHouseInitializer:
    """ClickHouse数据库初始化器"""
    
    def __init__(self, client: AsyncClient):
        self.client = client

    async def create_boss_job_json_table(self):
        """创建BOSS招聘职位JSON存储表"""
        create_table_sql = """
        CREATE TABLE IF NOT EXISTS job_data.boss_job (
            id UInt64 DEFAULT 0,
            json_data String DEFAULT '',  -- 原始JSON数据
            job_id String DEFAULT '',  -- BOSS平台去重字段：jobBaseInfoVO.jobId
            created_at DateTime DEFAULT now(),
            updated_at DateTime DEFAULT now()
        ) ENGINE = MergeTree()
        ORDER BY created_at
        SETTINGS index_granularity = 8192;
        """
        
        try:
            await self.client.command(create_table_sql)
            logger.info("BOSS职位JSON数据表 boss_job 创建成功")
        except Exception as e:
            logger.error(f"创建BOSS职位JSON数据表失败: {e}")
            raise
    
    async def create_boss_company_json_table(self):
        """创建BOSS招聘公司JSON存储表"""
        create_table_sql = """
        CREATE TABLE IF NOT EXISTS job_data.boss_company (
            id UInt64 DEFAULT 0,
            json_data String DEFAULT '',  -- 原始JSON数据
            company_name String DEFAULT '',  -- 公司名称去重字段
            created_at DateTime DEFAULT now(),
            updated_at DateTime DEFAULT now()
        ) ENGINE = MergeTree()
        ORDER BY created_at
        SETTINGS index_granularity = 8192;
        """
        
        try:
            await self.client.command(create_table_sql)
            logger.info("BOSS公司JSON数据表 boss_company 创建成功")
        except Exception as e:
            logger.error(f"创建BOSS公司JSON数据表失败: {e}")
            raise
    
    async def create_qcwy_job_json_table(self):
        """创建前程无忧职位JSON存储表"""
        create_table_sql = """
        CREATE TABLE IF NOT EXISTS job_data.qcwy_job (
            id UInt64 DEFAULT 0,
            json_data String DEFAULT '',  -- 原始JSON数据
            job_id String DEFAULT '',  -- QCWY平台去重字段：jobId
            update_date_time String DEFAULT '',  -- QCWY平台去重字段：updateDateTime
            created_at DateTime DEFAULT now(),
            updated_at DateTime DEFAULT now()
        ) ENGINE = MergeTree()
        ORDER BY created_at
        SETTINGS index_granularity = 8192;
        """
        
        try:
            await self.client.command(create_table_sql)
            logger.info("前程无忧职位JSON数据表 qcwy_job 创建成功")
        except Exception as e:
            logger.error(f"创建前程无忧职位JSON数据表失败: {e}")
            raise
    
    async def create_qcwy_company_json_table(self):
        """创建前程无忧公司JSON存储表"""
        create_table_sql = """
        CREATE TABLE IF NOT EXISTS job_data.qcwy_company (
            id UInt64 DEFAULT 0,
            json_data String DEFAULT '',  -- 原始JSON数据
            company_name String DEFAULT '',  -- 公司名称去重字段
            created_at DateTime DEFAULT now(),
            updated_at DateTime DEFAULT now()
        ) ENGINE = MergeTree()
        ORDER BY created_at
        SETTINGS index_granularity = 8192;
        """
        
        try:
            await self.client.command(create_table_sql)
            logger.info("前程无忧公司JSON数据表 qcwy_company 创建成功")
        except Exception as e:
            logger.error(f"创建前程无忧公司JSON数据表失败: {e}")
            raise
    
    async def create_zhilian_job_json_table(self):
        """创建智联招聘职位JSON存储表"""
        create_table_sql = """
        CREATE TABLE IF NOT EXISTS job_data.zhilian_job (
            id UInt64 DEFAULT 0,
            json_data String DEFAULT '',  -- 原始JSON数据
            number String DEFAULT '',  -- 智联平台去重字段：number
            first_publish_time String DEFAULT '',  -- 智联平台去重字段：firstPublishTime
            created_at DateTime DEFAULT now(),
            updated_at DateTime DEFAULT now()
        ) ENGINE = MergeTree()
        ORDER BY created_at
        SETTINGS index_granularity = 8192;
        """
        
        try:
            await self.client.command(create_table_sql)
            logger.info("智联招聘职位JSON数据表 zhilian_job 创建成功")
        except Exception as e:
            logger.error(f"创建智联招聘职位JSON数据表失败: {e}")
            raise
    
    async def create_zhilian_company_json_table(self):
        """创建智联招聘公司JSON存储表"""
        create_table_sql = """
        CREATE TABLE IF NOT EXISTS job_data.zhilian_company (
            id UInt64 DEFAULT 0,
            json_data String DEFAULT '',  -- 原始JSON数据
            company_name String DEFAULT '',  -- 公司名称去重字段
            created_at DateTime DEFAULT now(),
            updated_at DateTime DEFAULT now()
        ) ENGINE = MergeTree()
        ORDER BY created_at
        SETTINGS index_granularity = 8192;
        """
        
        try:
            await self.client.command(create_table_sql)
            logger.info("智联招聘公司JSON数据表 zhilian_company 创建成功")
        except Exception as e:
            logger.error(f"创建智联招聘公司JSON数据表失败: {e}")
            raise

    async def create_pending_company_table(self):
        """创建待处理公司表"""
        create_table_sql = """
        CREATE TABLE IF NOT EXISTS job_data.pending_company (
            source String,
            company_id String,
            company_name String DEFAULT '',
            status String DEFAULT 'pending',
            error_msg String DEFAULT '',
            created_at DateTime DEFAULT now(),
            updated_at DateTime DEFAULT now(),
            version UInt64 DEFAULT 1
        ) ENGINE = ReplacingMergeTree(version)
        ORDER BY (source, company_id)
        SETTINGS index_granularity = 8192;
        """
        
        try:
            await self.client.command(create_table_sql)
            logger.info("待处理公司表 pending_company 创建成功")
        except Exception as e:
            logger.error(f"创建待处理公司表失败: {e}")
            raise

    async def create_job_analytics_view(self):
        """创建统一的招聘数据分析视图"""
        create_view_sql = """
        CREATE VIEW IF NOT EXISTS job_data.job_analytics AS
        SELECT
            'boss' as source,
            job_id,
            JSONExtractString(json_data, 'jobName') as position_name,
            JSONExtractString(json_data, 'brandName') as company_name,
            JSONExtractString(json_data, 'salaryDesc') as salary_text,
            0.0 as salary_min,
            0.0 as salary_max,
            JSONExtractString(json_data, 'cityName') as city,
            JSONExtractString(json_data, 'experienceName') as experience_required,
            JSONExtractString(json_data, 'degreeName') as education,
            created_at
        FROM job_data.boss_job
        UNION ALL
        SELECT
            'qcwy' as source,
            job_id,
            JSONExtractString(json_data, 'jobName') as position_name,
            JSONExtractString(json_data, 'companyName') as company_name,
            JSONExtractString(json_data, 'provideSalaryString') as salary_text,
            0.0, 0.0,
            JSONExtractString(json_data, 'workCity') as city,
            JSONExtractString(json_data, 'workYear') as experience_required,
            JSONExtractString(json_data, 'degree') as education,
            created_at
        FROM job_data.qcwy_job
        UNION ALL
        SELECT
            'zhilian' as source,
            number as job_id,
            JSONExtractString(json_data, 'jobName') as position_name,
            JSONExtractString(json_data, 'companyName') as company_name,
            JSONExtractString(json_data, 'salary60') as salary_text,
            0.0, 0.0,
            JSONExtractString(json_data, 'workCity') as city,
            JSONExtractString(json_data, 'workingExp') as experience_required,
            JSONExtractString(json_data, 'education') as education,
            created_at
        FROM job_data.zhilian_job
        """
        try:
            await self.client.command(create_view_sql)
            logger.info("招聘数据分析视图 job_analytics 创建成功")
        except Exception as e:
            logger.error(f"创建招聘数据分析视图失败: {e}")
            raise

    async def initialize_all_tables(self):
        """初始化所有表"""
        logger.info("开始初始化 ClickHouse 数据库表...")
        
        try:
            # 创建BOSS招聘JSON表
            await self.create_boss_job_json_table()
            await self.create_boss_company_json_table()
            
            # 创建前程无忧JSON表
            await self.create_qcwy_job_json_table()
            await self.create_qcwy_company_json_table()
            
            # 创建智联招聘JSON表
            await self.create_zhilian_job_json_table()
            await self.create_zhilian_company_json_table()

            # 创建待处理公司表
            await self.create_pending_company_table()

            # 创建统一分析视图
            await self.create_job_analytics_view()

            logger.info("ClickHouse 数据库表初始化完成")
        except Exception as e:
            logger.error(f"ClickHouse 数据库初始化失败: {e}")
            raise