backbone-bucket 0.3.1

//! Queries for ContentHash aggregate
//!
//! Generated by backbone-schema. Do not edit manually.
//!
//! CQRS Queries represent requests for data without side effects.

use async_trait::async_trait;
use anyhow::Result;
use serde::{Deserialize, Serialize};

use crate::domain::entity::ContentHash;
use crate::infrastructure::persistence::{ContentHashRepository, PaginationParams, PaginatedResult, ContentHashFilter};
use super::QueryHandler;

// ============================================================================
// QUERY TRAIT (DEPRECATED)
// ============================================================================

/// Query trait for ContentHash operations
///
/// **DEPRECATED**: Use the generic `QueryHandler<Q>` trait from `mod.rs` instead.
/// This trait is kept for backwards compatibility.
#[deprecated(since = "0.2.0", note = "Use QueryHandler<Q> trait instead")]
#[async_trait]
pub trait ContentHashQuery: Send + Sync {
    type Output;
    async fn execute(&self) -> Result<Self::Output>;
}

// ============================================================================
// GET BY ID QUERY
// ============================================================================

/// Query to get a content_hash by ID
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct GetContentHashByIdQuery {
    pub id: String,
}

/// Handler for GetContentHashByIdQuery
pub struct GetContentHashByIdHandler<R: ContentHashRepository> {
    repository: std::sync::Arc<R>,
}

impl<R: ContentHashRepository> GetContentHashByIdHandler<R> {
    pub fn new(repository: std::sync::Arc<R>) -> Self {
        Self { repository }
    }
}

#[async_trait]
impl<R: ContentHashRepository + 'static> QueryHandler<GetContentHashByIdQuery> for GetContentHashByIdHandler<R> {
    type Output = Option<ContentHash>;

    async fn handle(&self, query: GetContentHashByIdQuery) -> Result<Self::Output> {
        self.repository.find_by_id(&query.id).await
    }
}

// ============================================================================
// LIST QUERY
// ============================================================================

/// Query to list content_hash entities with pagination
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ListContentHashQuery {
    pub page: u32,
    pub per_page: u32,
    pub filter_hash: Option<String>,
    pub filter_size_bytes: Option<i64>,
    pub filter_storage_key: Option<String>,
    pub filter_storage_backend: Option<StorageBackend>,
    pub filter_fingerprint: Option<String>,
}

impl Default for ListContentHashQuery {
    fn default() -> Self {
        Self {
            page: 1,
            per_page: 20,
            filter_hash: None,
            filter_size_bytes: None,
            filter_storage_key: None,
            filter_storage_backend: None,
            filter_fingerprint: None,
        }
    }
}

/// Handler for ListContentHashQuery
pub struct ListContentHashHandler<R: ContentHashRepository> {
    repository: std::sync::Arc<R>,
}

impl<R: ContentHashRepository> ListContentHashHandler<R> {
    pub fn new(repository: std::sync::Arc<R>) -> Self {
        Self { repository }
    }
}

#[async_trait]
impl<R: ContentHashRepository + 'static> QueryHandler<ListContentHashQuery> for ListContentHashHandler<R> {
    type Output = PaginatedResult<ContentHash>;

    async fn handle(&self, query: ListContentHashQuery) -> Result<Self::Output> {
        let params = PaginationParams::new(query.page, query.per_page);

        // Build filter from query parameters
        let filters = ContentHashFilter {
            hash: query.filter_hash.clone(),
            size_bytes: query.filter_size_bytes.clone(),
            storage_key: query.filter_storage_key.clone(),
            storage_backend: query.filter_storage_backend.clone(),
            fingerprint: query.filter_fingerprint.clone(),
            ..Default::default()
        };

        // Use list_with_filters if any filters are set
        if filters.has_filters() {
            self.repository.list_with_filters(params, filters).await
        } else {
            self.repository.list(params).await
        }
    }
}

// ============================================================================
// FIND BY UNIQUE FIELDS
// ============================================================================

/// Query to find content_hash by hash
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct GetContentHashByHashQuery {
    pub hash: String,
}

/// Handler for GetContentHashByHashQuery
pub struct GetContentHashByHashHandler<R: ContentHashRepository> {
    repository: std::sync::Arc<R>,
}

impl<R: ContentHashRepository> GetContentHashByHashHandler<R> {
    pub fn new(repository: std::sync::Arc<R>) -> Self {
        Self { repository }
    }
}

#[async_trait]
impl<R: ContentHashRepository + 'static> QueryHandler<GetContentHashByHashQuery> for GetContentHashByHashHandler<R> {
    type Output = Option<ContentHash>;

    async fn handle(&self, query: GetContentHashByHashQuery) -> Result<Self::Output> {
        self.repository.find_by_hash(&query.hash).await
    }
}

// ============================================================================
// CUSTOM QUERIES
// ============================================================================
// <<< CUSTOM QUERIES START >>>

// <<< CUSTOM QUERIES START >>>
// Add your custom queries here
// Example:
//
// #[derive(Debug, Clone, Serialize, Deserialize)]
// pub struct GetActiveContentHashQuery;
// <<< CUSTOM QUERIES END >>>