Catalyst Signed Document POST endpoint. Proper CurrentPage response returning.

[Mr-Leshiy]

Summary

Implement a proper page response filed setup

catalyst-voices/catalyst-gateway/bin/src/service/api/documents/post_document_index_query/mod.rs

Line 61 in 0c6d286

page: None,

.

Description

Need to instantiate a proper CurrentPage structure object.

pub(crate) struct CurrentPage {
    #[allow(clippy::missing_docs_in_private_items)] // Type is pre documented
    pub page: common::types::generic::query::pagination::Page,
    #[allow(clippy::missing_docs_in_private_items)] // Type is pre documented
    pub limit: common::types::generic::query::pagination::Limit,
    #[allow(clippy::missing_docs_in_private_items)] // Type is pre documented
    pub remaining: common::types::generic::query::pagination::Remaining,
}

page and limit field could be defined from the endpoint request arguments.
remaining field should be calculated as a difference between the resulted number of elements returned by the query and the total amount of elements (applying the same filtering options).
It will be needed to add a new sql request as this https://github.com/input-output-hk/catalyst-voices/blob/f83a33f7c2a11607485ee6d19f33269e066187da/catalyst-gateway/bin/src/db/event/signed_docs/sql/filtered_select_signed_documents.sql.jinja, but it should SELECT just a count of rows.