use crate::{
    client::ChurchApiClient,
    error::Result,
    models::{BibleVerse, VerseOfTheDay, VerseCategory, PaginationParams, ApiListResponse, ApiVersion},
};

pub async fn get_random_verse(client: &ChurchApiClient) -> Result<BibleVerse> {
    // The response format is {success: bool, data: Verse}
    #[derive(serde::Deserialize, serde::Serialize)]
    struct VerseResponse {
        success: bool,
        data: ApiVerse,
    }
    
    #[derive(serde::Deserialize, serde::Serialize)]
    struct ApiVerse {
        id: String,
        reference: String,
        text: String,
        #[serde(rename = "is_active")]
        is_active: bool,
    }
    
    let url = client.build_url("/bible_verses/random");
    let raw_response = client.client.get(&url).send().await?;
    let response_text = raw_response.text().await?;
    let response: VerseResponse = serde_json::from_str(&response_text)
        .map_err(|e| crate::error::ChurchApiError::Json(e))?;
    
    if response.success {
        Ok(BibleVerse::new(response.data.text, response.data.reference))
    } else {
        Err(crate::error::ChurchApiError::Api("Bible verse API returned success=false".to_string()))
    }
}

pub async fn get_verse_of_the_day(client: &ChurchApiClient) -> Result<VerseOfTheDay> {
    client.get_api("/bible/verse-of-the-day").await
}

pub async fn get_verse_by_reference(client: &ChurchApiClient, reference: &str) -> Result<Option<BibleVerse>> {
    let path = format!("/bible/verse?reference={}", urlencoding::encode(reference));
    
    match client.get_api(&path).await {
        Ok(verse) => Ok(Some(verse)),
        Err(crate::error::ChurchApiError::NotFound) => Ok(None),
        Err(e) => Err(e),
    }
}

pub async fn get_verses_by_category(client: &ChurchApiClient, category: VerseCategory, limit: Option<u32>) -> Result<Vec<BibleVerse>> {
    let mut path = format!("/bible/category/{}", category.display_name().to_lowercase());
    
    if let Some(limit) = limit {
        path.push_str(&format!("?limit={}", limit));
    }
    
    let response: crate::models::ApiListResponse<BibleVerse> = client.get_api_list(&path).await?;
    Ok(response.data.items)
}

pub async fn search_verses(client: &ChurchApiClient, query: &str, limit: Option<u32>) -> Result<Vec<BibleVerse>> {
    let mut path = format!("/bible_verses/search?q={}", urlencoding::encode(query));
    
    if let Some(limit) = limit {
        path.push_str(&format!("&limit={}", limit));
    }
    
    // The bible_verses/search endpoint returns a custom format with additional fields
    #[derive(serde::Deserialize, serde::Serialize)]
    struct ApiBibleVerse {
        id: String,
        reference: String,
        text: String,
        is_active: bool,
        created_at: String,
        updated_at: String,
    }
    
    #[derive(serde::Deserialize, serde::Serialize)]
    struct BibleSearchResponse {
        success: bool,
        data: Vec<ApiBibleVerse>,
        message: Option<String>,
    }
    
    let url = client.build_url(&path);
    let raw_response = client.client.get(&url).send().await?;
    let response_text = raw_response.text().await?;
    let response: BibleSearchResponse = serde_json::from_str(&response_text)
        .map_err(|e| crate::error::ChurchApiError::Json(e))?;
    if response.success {
        // Convert ApiBibleVerse to BibleVerse
        let verses = response.data.into_iter()
            .map(|api_verse| BibleVerse::new(api_verse.text, api_verse.reference))
            .collect();
        Ok(verses)
    } else {
        Ok(Vec::new())
    }
}

// V2 API methods
pub async fn get_random_verse_v2(client: &ChurchApiClient) -> Result<BibleVerse> {
    #[derive(serde::Deserialize, serde::Serialize)]
    struct VerseResponse {
        success: bool,
        data: ApiVerse,
    }
    
    #[derive(serde::Deserialize, serde::Serialize)]
    struct ApiVerse {
        id: String,
        reference: String,
        text: String,
        #[serde(rename = "is_active")]
        is_active: bool,
    }
    
    let url = client.build_url_with_version("/bible_verses/random", ApiVersion::V2);
    let raw_response = client.client.get(&url).send().await?;
    let response_text = raw_response.text().await?;
    let response: VerseResponse = serde_json::from_str(&response_text)
        .map_err(|e| crate::error::ChurchApiError::Json(e))?;
    
    if response.success {
        Ok(BibleVerse::new(response.data.text, response.data.reference))
    } else {
        Err(crate::error::ChurchApiError::Api("Bible verse API returned success=false".to_string()))
    }
}

pub async fn get_bible_verses_v2(client: &ChurchApiClient, params: Option<PaginationParams>) -> Result<ApiListResponse<BibleVerse>> {
    let mut path = "/bible_verses".to_string();
    
    if let Some(params) = params {
        let mut query_params = Vec::new();
        
        if let Some(page) = params.page {
            query_params.push(("page", page.to_string()));
        }
        
        if let Some(per_page) = params.per_page {
            query_params.push(("per_page", per_page.to_string()));
        }
        
        if !query_params.is_empty() {
            let query_string = query_params
                .iter()
                .map(|(k, v)| format!("{}={}", k, urlencoding::encode(v)))
                .collect::<Vec<_>>()
                .join("&");
            path.push_str(&format!("?{}", query_string));
        }
    }
    
    client.get_api_list_with_version(&path, ApiVersion::V2).await
}

pub async fn search_verses_v2(client: &ChurchApiClient, query: &str, limit: Option<u32>) -> Result<Vec<BibleVerse>> {
    let mut path = format!("/bible_verses/search?q={}", urlencoding::encode(query));
    
    if let Some(limit) = limit {
        path.push_str(&format!("&limit={}", limit));
    }
    
    let response: crate::models::ApiListResponse<BibleVerse> = client.get_api_list_with_version(&path, ApiVersion::V2).await?;
    Ok(response.data.items)
}