comments_integrity/
comment.rs

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use hdi::prelude::*;

#[derive(Clone, PartialEq)]
#[hdk_entry_helper]
pub struct Comment {
    pub commented_hash: AnyDhtHash,
    pub content: String,
    pub reply_to: Option<ActionHash>,
}

pub fn validate_create_comment(
    _action: EntryCreationAction,
    comment: Comment,
) -> ExternResult<ValidateCallbackResult> {
    if let Some(action_hash) = comment.reply_to.clone() {
        let record = must_get_valid_record(action_hash)?;
        let _comment: crate::Comment = record
            .entry()
            .to_app_option()
            .map_err(|e| wasm_error!(e))?
            .ok_or(wasm_error!(WasmErrorInner::Guest(String::from(
                "Dependant action must be accompanied by an entry"
            ))))?;
    }
    // TODO: add the appropriate validation rules
    Ok(ValidateCallbackResult::Valid)
}

pub fn validate_update_comment(
    _action: Update,
    _comment: Comment,
    _original_action: EntryCreationAction,
    _original_comment: Comment,
) -> ExternResult<ValidateCallbackResult> {
    // TODO: add the appropriate validation rules
    Ok(ValidateCallbackResult::Valid)
}

pub fn validate_delete_comment(
    _action: Delete,
    _original_action: EntryCreationAction,
    _original_comment: Comment,
) -> ExternResult<ValidateCallbackResult> {
    // TODO: add the appropriate validation rules
    Ok(ValidateCallbackResult::Valid)
}

pub fn validate_create_link_comment_to_comments(
    _action: CreateLink,
    base_address: AnyLinkableHash,
    target_address: AnyLinkableHash,
    _tag: LinkTag,
) -> ExternResult<ValidateCallbackResult> {
    let action_hash = base_address
        .into_action_hash()
        .ok_or(wasm_error!(WasmErrorInner::Guest(
            "No action hash associated with link".to_string()
        )))?;
    let record = must_get_valid_record(action_hash)?;
    let _comment: crate::Comment = record
        .entry()
        .to_app_option()
        .map_err(|e| wasm_error!(e))?
        .ok_or(wasm_error!(WasmErrorInner::Guest(
            "Linked action must reference an entry".to_string()
        )))?;
    let action_hash =
        target_address
            .into_action_hash()
            .ok_or(wasm_error!(WasmErrorInner::Guest(
                "No action hash associated with link".to_string()
            )))?;
    let record = must_get_valid_record(action_hash)?;
    let _comment: crate::Comment = record
        .entry()
        .to_app_option()
        .map_err(|e| wasm_error!(e))?
        .ok_or(wasm_error!(WasmErrorInner::Guest(
            "Linked action must reference an entry".to_string()
        )))?;
    // TODO: add the appropriate validation rules
    Ok(ValidateCallbackResult::Valid)
}

pub fn validate_delete_link_comment_to_comments(
    _action: DeleteLink,
    _original_action: CreateLink,
    _base: AnyLinkableHash,
    _target: AnyLinkableHash,
    _tag: LinkTag,
) -> ExternResult<ValidateCallbackResult> {
    // TODO: add the appropriate validation rules
    Ok(ValidateCallbackResult::Valid)
}

pub fn validate_create_link_comment_updates(
    _action: CreateLink,
    base_address: AnyLinkableHash,
    target_address: AnyLinkableHash,
    _tag: LinkTag,
) -> ExternResult<ValidateCallbackResult> {
    let action_hash = base_address
        .into_action_hash()
        .ok_or(wasm_error!(WasmErrorInner::Guest(
            "No action hash associated with link".to_string()
        )))?;
    let record = must_get_valid_record(action_hash)?;
    let _comment: crate::Comment = record
        .entry()
        .to_app_option()
        .map_err(|e| wasm_error!(e))?
        .ok_or(wasm_error!(WasmErrorInner::Guest(
            "Linked action must reference an entry".to_string()
        )))?;
    let action_hash =
        target_address
            .into_action_hash()
            .ok_or(wasm_error!(WasmErrorInner::Guest(
                "No action hash associated with link".to_string()
            )))?;
    let record = must_get_valid_record(action_hash)?;
    let _comment: crate::Comment = record
        .entry()
        .to_app_option()
        .map_err(|e| wasm_error!(e))?
        .ok_or(wasm_error!(WasmErrorInner::Guest(
            "Linked action must reference an entry".to_string()
        )))?;
    // TODO: add the appropriate validation rules
    Ok(ValidateCallbackResult::Valid)
}

pub fn validate_delete_link_comment_updates(
    _action: DeleteLink,
    _original_action: CreateLink,
    _base: AnyLinkableHash,
    _target: AnyLinkableHash,
    _tag: LinkTag,
) -> ExternResult<ValidateCallbackResult> {
    Ok(ValidateCallbackResult::Invalid(
        "CommentUpdates links cannot be deleted".to_string(),
    ))
}