use crate::{
    client::ChurchApiClient,
    error::Result,
    models::{Event, NewEvent, EventUpdate, EventSubmission, PaginationParams, ApiListResponse, ApiVersion},
};

pub async fn get_events(client: &ChurchApiClient, params: Option<PaginationParams>) -> Result<ApiListResponse<Event>> {
    let mut path = "/events".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 let Some(sort) = &params.sort {
            query_params.push(("sort", sort.clone()));
        }
        
        if let Some(filter) = &params.filter {
            query_params.push(("filter", filter.clone()));
        }
        
        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(&path).await
}

pub async fn get_upcoming_events(client: &ChurchApiClient, limit: Option<u32>) -> Result<Vec<Event>> {
    let mut path = "/events/upcoming".to_string();
    
    if let Some(limit) = limit {
        path.push_str(&format!("?limit={}", limit));
    }
    
    client.get_api(&path).await
}

pub async fn get_event(client: &ChurchApiClient, id: &str) -> Result<Option<Event>> {
    let path = format!("/events/{}", id);
    
    match client.get_api(&path).await {
        Ok(event) => Ok(Some(event)),
        Err(crate::error::ChurchApiError::NotFound) => Ok(None),
        Err(e) => Err(e),
    }
}

pub async fn create_event(client: &ChurchApiClient, event: NewEvent) -> Result<String> {
    client.post_api("/events", &event).await
}

pub async fn update_event(client: &ChurchApiClient, id: &str, update: EventUpdate) -> Result<()> {
    let path = format!("/events/{}", id);
    client.put_api(&path, &update).await
}

pub async fn delete_event(client: &ChurchApiClient, id: &str) -> Result<()> {
    let path = format!("/events/{}", id);
    client.delete_api(&path).await
}

pub async fn get_featured_events(client: &ChurchApiClient, limit: Option<u32>) -> Result<Vec<Event>> {
    let mut path = "/events/featured".to_string();
    
    if let Some(limit) = limit {
        path.push_str(&format!("?limit={}", limit));
    }
    
    client.get_api(&path).await
}

pub async fn get_events_by_category(client: &ChurchApiClient, category: &str, limit: Option<u32>) -> Result<Vec<Event>> {
    let mut path = format!("/events/category/{}", category);
    
    if let Some(limit) = limit {
        path.push_str(&format!("?limit={}", limit));
    }
    
    client.get_api(&path).await
}

pub async fn get_events_by_date_range(
    client: &ChurchApiClient, 
    start_date: &str, 
    end_date: &str
) -> Result<Vec<Event>> {
    let path = format!("/events/range?start={}&end={}", 
        urlencoding::encode(start_date), 
        urlencoding::encode(end_date)
    );
    
    client.get_api(&path).await
}

pub async fn search_events(client: &ChurchApiClient, query: &str, limit: Option<u32>) -> Result<Vec<Event>> {
    let mut path = format!("/events/search?q={}", urlencoding::encode(query));
    
    if let Some(limit) = limit {
        path.push_str(&format!("&limit={}", limit));
    }
    
    client.get_api(&path).await
}

pub async fn upload_event_image(client: &ChurchApiClient, event_id: &str, image_data: Vec<u8>, filename: String) -> Result<String> {
    let path = format!("/events/{}/image", event_id);
    client.upload_file(&path, image_data, filename, "image".to_string()).await
}

// V2 API methods
pub async fn get_events_v2(client: &ChurchApiClient, params: Option<PaginationParams>) -> Result<ApiListResponse<Event>> {
    let mut path = "/events".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 let Some(sort) = &params.sort {
            query_params.push(("sort", sort.clone()));
        }
        
        if let Some(filter) = &params.filter {
            query_params.push(("filter", filter.clone()));
        }
        
        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 get_upcoming_events_v2(client: &ChurchApiClient, limit: Option<u32>) -> Result<Vec<Event>> {
    let mut path = "/events/upcoming".to_string();
    
    if let Some(limit) = limit {
        path.push_str(&format!("?limit={}", limit));
    }
    
    client.get_api_with_version(&path, ApiVersion::V2).await
}

pub async fn get_featured_events_v2(client: &ChurchApiClient, limit: Option<u32>) -> Result<Vec<Event>> {
    let mut path = "/events/featured".to_string();
    
    if let Some(limit) = limit {
        path.push_str(&format!("?limit={}", limit));
    }
    
    client.get_api_with_version(&path, ApiVersion::V2).await
}

pub async fn get_event_v2(client: &ChurchApiClient, id: &str) -> Result<Option<Event>> {
    let path = format!("/events/{}", id);
    
    match client.get_api_with_version(&path, ApiVersion::V2).await {
        Ok(event) => Ok(Some(event)),
        Err(crate::error::ChurchApiError::NotFound) => Ok(None),
        Err(e) => Err(e),
    }
}

pub async fn submit_event(client: &ChurchApiClient, submission: EventSubmission) -> Result<String> {
    client.post_api("/events/submit", &submission).await
}

pub async fn submit_event_with_image(client: &ChurchApiClient, submission: EventSubmission, image_data: Option<(Vec<u8>, String)>) -> Result<String> {
    client.submit_event_multipart(&submission, image_data).await
}