backbone-bucket 0.3.0

//! Commands for ContentHash aggregate
//!
//! Generated by backbone-schema. Do not edit manually.
//!
//! CQRS Commands represent intent to change state.

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

use crate::domain::entity::ContentHash;
use crate::infrastructure::persistence::ContentHashRepository;
use super::CommandHandler;

// ============================================================================
// COMMAND TRAIT (DEPRECATED)
// ============================================================================

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

// ============================================================================
// CREATE COMMAND
// ============================================================================

/// Command to create a new content_hash
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CreateContentHashCommand {
    pub hash: String,
    pub size_bytes: i64,
    pub storage_key: String,
    pub storage_backend: StorageBackend,
    pub reference_count: i32,
    pub first_uploaded_at: DateTime<Utc>,
    pub last_referenced_at: DateTime<Utc>,
    pub fingerprint: Option<String>,
    pub metadata: serde_json::Value,
}

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

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

#[async_trait]
impl<R: ContentHashRepository + 'static> CommandHandler<CreateContentHashCommand> for CreateContentHashHandler<R> {
    type Output = ContentHash;

    async fn handle(&self, cmd: CreateContentHashCommand) -> Result<Self::Output> {
        let entity = ContentHash::builder()
            .id(Uuid::new_v4().to_string())
            .hash(cmd.hash)
            .size_bytes(cmd.size_bytes)
            .storage_key(cmd.storage_key)
            .storage_backend(cmd.storage_backend)
            .reference_count(cmd.reference_count)
            .first_uploaded_at(cmd.first_uploaded_at)
            .last_referenced_at(cmd.last_referenced_at)
            .fingerprint(cmd.fingerprint)
            .metadata(cmd.metadata)
            .build()?;

        self.repository.save(&entity).await
    }
}

// ============================================================================
// UPDATE COMMAND
// ============================================================================

/// Command to update an existing content_hash
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct UpdateContentHashCommand {
    pub id: String,
    pub hash: Option<String>,
    pub size_bytes: Option<i64>,
    pub storage_key: Option<String>,
    pub storage_backend: Option<StorageBackend>,
    pub reference_count: Option<i32>,
    pub first_uploaded_at: Option<DateTime<Utc>>,
    pub last_referenced_at: Option<DateTime<Utc>>,
    pub fingerprint: Option<String>,
    pub metadata: Option<serde_json::Value>,
}

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

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

#[async_trait]
impl<R: ContentHashRepository + 'static> CommandHandler<UpdateContentHashCommand> for UpdateContentHashHandler<R> {
    type Output = Option<ContentHash>;

    async fn handle(&self, cmd: UpdateContentHashCommand) -> Result<Self::Output> {
        let existing = self.repository.find_by_id(&cmd.id).await?;

        let Some(mut entity) = existing else {
            return Ok(None);
        };

        // Apply updates
        if let Some(value) = cmd.hash {
            entity.hash = value;
        }
        if let Some(value) = cmd.size_bytes {
            entity.size_bytes = value;
        }
        if let Some(value) = cmd.storage_key {
            entity.storage_key = value;
        }
        if let Some(value) = cmd.storage_backend {
            entity.storage_backend = value;
        }
        if let Some(value) = cmd.reference_count {
            entity.reference_count = value;
        }
        if let Some(value) = cmd.first_uploaded_at {
            entity.first_uploaded_at = value;
        }
        if let Some(value) = cmd.last_referenced_at {
            entity.last_referenced_at = value;
        }
        entity.fingerprint = cmd.fingerprint;
        if let Some(value) = cmd.metadata {
            entity.metadata = value;
        }

        self.repository.update(&cmd.id, &entity).await
    }
}

// ============================================================================
// DELETE COMMAND
// ============================================================================

/// Command to delete a content_hash
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct DeleteContentHashCommand {
    pub id: String,
    pub hard_delete: bool,
}

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

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

#[async_trait]
impl<R: ContentHashRepository + 'static> CommandHandler<DeleteContentHashCommand> for DeleteContentHashHandler<R> {
    type Output = bool;

    async fn handle(&self, cmd: DeleteContentHashCommand) -> Result<Self::Output> {
        if cmd.hard_delete {
            self.repository.delete(&cmd.id).await
        } else {
            self.repository.soft_delete(&cmd.id).await
        }
    }
}

// ============================================================================
// CUSTOM COMMANDS
// ============================================================================
// <<< CUSTOM COMMANDS START >>>

// <<< CUSTOM COMMANDS START >>>
// Add your custom commands here
// Example:
//
// #[derive(Debug, Clone, Serialize, Deserialize)]
// pub struct ActivateContentHashCommand {
//     pub id: String,
// }
// <<< CUSTOM COMMANDS END >>>