//! # Posts controller
//!
//! @author Pierre Hubert

use crate::api_data::post_api::PostAPI;
use crate::controllers::routes::RequestResult;
use crate::data::group::GroupAccessLevel;
use crate::data::http_request_handler::HttpRequestHandler;
use crate::helpers::{posts_helper, user_helper};

/// Get the list of posts of a user
pub fn get_list_user(r: &mut HttpRequestHandler) -> RequestResult {
    let user_id = r.post_user_id("userID")?;
    let start_from = r.post_u64_opt("startFrom", 0)?;

    if !user_helper::can_see_user_page(r.user_id_ref()?, &user_id)? {
        r.forbidden("You are not allowed to access this user posts !".to_string())?;
    }

    let posts = posts_helper::PostsQuery::new(r.user_id_opt())
        .set_start_from(start_from)
        .get_user(&user_id)?;

    r.set_response(PostAPI::for_list(&posts, r.user_id_opt())?)
}

/// Get the list of posts of a group
pub fn get_list_group(r: &mut HttpRequestHandler) -> RequestResult {
    let group_id = r.post_group_id_with_access("groupID", GroupAccessLevel::VIEW_ACCESS)?;
    let start_from = r.post_u64_opt("startFrom", 0)?;

    let posts = posts_helper::PostsQuery::new(r.user_id_opt())
        .set_start_from(start_from)
        .get_group(&group_id)?;

    r.set_response(PostAPI::for_list(&posts, r.user_id_opt())?)
}

/// Get the latest posts of a group
pub fn get_latest(r: &mut HttpRequestHandler) -> RequestResult {
    let start_from = r.post_u64_opt("startFrom", 0)?;
    let include_groups = r.post_bool_opt("include_groups", false);

    let posts = posts_helper::PostsQuery::new(r.user_id_opt())
        .set_start_from(start_from)
        .get_latest(include_groups)?;

    r.set_response(PostAPI::for_list(&posts, r.user_id_opt())?)
}