//!
//! 数据持久化服务客户端
//!

use crate::error::Result;
use common_contracts::config_models::{
    AnalysisTemplateSets, DataSourcesConfig, LlmProvidersConfig,
};
use common_contracts::dtos::{CompanyProfileDto, TimeSeriesFinancialDto, WorkflowHistoryDto, WorkflowHistorySummaryDto};
use uuid::Uuid;

#[derive(Clone)]
pub struct PersistenceClient {
    client: reqwest::Client,
    base_url: String,
}

impl PersistenceClient {
    pub fn new(base_url: String) -> Self {
        Self {
            client: reqwest::Client::new(),
            base_url,
        }
    }

    pub async fn get_company_profile(&self, symbol: &str) -> Result<CompanyProfileDto> {
        let url = format!("{}/companies/{}", self.base_url, symbol);
        let profile = self
            .client
            .get(&url)
            .send()
            .await?
            .error_for_status()?
            .json::<CompanyProfileDto>()
            .await?;
        Ok(profile)
    }

    pub async fn get_financials(&self, symbol: &str) -> Result<Vec<TimeSeriesFinancialDto>> {
        let url = format!(
            "{}/market-data/financial-statements/{}",
            self.base_url, symbol
        );
        let financials = self
            .client
            .get(&url)
            .send()
            .await?
            .error_for_status()?
            .json::<Vec<TimeSeriesFinancialDto>>()
            .await?;
        Ok(financials)
    }

    #[allow(dead_code)]
    pub async fn get_session_data(
        &self,
        request_id: Uuid,
        provider: Option<&str>,
        data_type: Option<&str>,
    ) -> Result<Vec<common_contracts::dtos::SessionDataDto>> {
        let url = format!("{}/session-data/{}", self.base_url, request_id);
        let mut req = self.client.get(&url);
        
        if let Some(p) = provider {
            req = req.query(&[("provider", p)]);
        }
        if let Some(d) = data_type {
            req = req.query(&[("data_type", d)]);
        }

        let data = req
            .send()
            .await?
            .error_for_status()?
            .json::<Vec<common_contracts::dtos::SessionDataDto>>()
            .await?;
        Ok(data)
    }

    pub async fn get_workflow_histories(&self, symbol: Option<&str>, limit: Option<i64>) -> Result<Vec<WorkflowHistorySummaryDto>> {
        let url = format!("{}/history", self.base_url);
        let mut req = self.client.get(&url);
        if let Some(s) = symbol {
            req = req.query(&[("symbol", s)]);
        }
        if let Some(l) = limit {
            req = req.query(&[("limit", l)]);
        }
        let resp = req.send().await?.error_for_status()?;
        let results = resp.json().await?;
        Ok(results)
    }

    pub async fn get_workflow_history_by_id(&self, request_id: Uuid) -> Result<WorkflowHistoryDto> {
        let url = format!("{}/history/{}", self.base_url, request_id);
        let resp = self.client.get(&url).send().await?.error_for_status()?;
        let result = resp.json().await?;
        Ok(result)
    }

    pub async fn clear_history(&self) -> Result<()> {
        let url = format!("{}/system/history", self.base_url);
        self.client
            .delete(&url)
            .send()
            .await?
            .error_for_status()?;
        Ok(())
    }

    // --- Config Methods ---

    pub async fn get_llm_providers_config(&self) -> Result<LlmProvidersConfig> {
        let url = format!("{}/configs/llm_providers", self.base_url);
        let config = self
            .client
            .get(&url)
            .send()
            .await?
            .error_for_status()?
            .json::<LlmProvidersConfig>()
            .await?;
        Ok(config)
    }

    pub async fn update_llm_providers_config(
        &self,
        payload: &LlmProvidersConfig,
    ) -> Result<LlmProvidersConfig> {
        let url = format!("{}/configs/llm_providers", self.base_url);
        let updated_config = self
            .client
            .put(&url)
            .json(payload)
            .send()
            .await?
            .error_for_status()?
            .json::<LlmProvidersConfig>()
            .await?;
        Ok(updated_config)
    }

    pub async fn get_analysis_template_sets(&self) -> Result<AnalysisTemplateSets> {
        let url = format!("{}/configs/analysis_template_sets", self.base_url);
        let config = self
            .client
            .get(&url)
            .send()
            .await?
            .error_for_status()?
            .json::<AnalysisTemplateSets>()
            .await?;
        Ok(config)
    }

    pub async fn update_analysis_template_sets(
        &self,
        payload: &AnalysisTemplateSets,
    ) -> Result<AnalysisTemplateSets> {
        let url = format!("{}/configs/analysis_template_sets", self.base_url);
        let updated_config = self
            .client
            .put(&url)
            .json(payload)
            .send()
            .await?
            .error_for_status()?
            .json::<AnalysisTemplateSets>()
            .await?;
        Ok(updated_config)
    }

    pub async fn get_data_sources_config(&self) -> Result<DataSourcesConfig> {
        let url = format!("{}/configs/data_sources", self.base_url);
        let config = self
            .client
            .get(&url)
            .send()
            .await?
            .error_for_status()?
            .json::<DataSourcesConfig>()
            .await?;
        Ok(config)
    }

    pub async fn update_data_sources_config(
        &self,
        payload: &DataSourcesConfig,
    ) -> Result<DataSourcesConfig> {
        let url = format!("{}/configs/data_sources", self.base_url);
        let updated_config = self
            .client
            .put(&url)
            .json(payload)
            .send()
            .await?
            .error_for_status()?
            .json::<DataSourcesConfig>()
            .await?;
        Ok(updated_config)
    }
}