<?php // Get single post by ID

require_once("../_auth.php");
require_once("../_utils.php");


// Increment number of views for post
function Post_AddView ($id) {
	global $db;

	$s = $db->prepare("UPDATE posts SET views = views + 1 WHERE id = ?");
	$s->bind_param("s", $id);
	$s->execute();
	$d = $s->get_result()->fetch_assoc();

	if (!(bool)$d) {
		require_once("../_json.php");
		ReturnJSONError($Err_Int_Unexpected, "failed to increment number of views");
	}
}

// Get single publication by ID
function Post_GetByID ($id) {
	global $db;

	$result = array();

	$s = $db->prepare("SELECT * FROM posts WHERE id = ?");
	$s->bind_param("s", $id);
	$s->execute();
	$d = $s->get_result()->fetch_assoc();

	if (!(bool)$d) {
		return null;
	}

	$result["id"]                     = $d["id"];
	$result["author_id"]              = $d["author_id"];
	if ($d["comments_enabled"])
		$result["comment_section_id"] = $d["comment_section_id"];
	$result["created_at"]             = $d["created_at"];
	$result["tags"]                   = $d["tags"];
	$result["title"]                  = $d["title"];
	$result["votes_up"]               = $d["votes_up"];
	$result["votes_down"]             = $d["votes_down"];
	$result["views"]                  = $d["views"] + 1;
	$result["pic_path"]               = $d["pic_path"];
	$result["preview_path"]           = $d["preview_path"];
	$result["edit_lock"]              = $d["edit_lock"];

	Post_AddView($id); // TODO: add rate-limit or completely rework

	return $result;
}


if (ThisFileIsRequested(__FILE__)) {
	require_once("../_json.php");

	if (isset($_REQUEST["id"])) {
		if (!ctype_digit($_REQUEST["id"]))
			ReturnJSONError($Err_RDP_InvalidID, "id must be numeric");
		$UserID = intval($_REQUEST["id"]);
	} else {
		ReturnJSONError($Err_RDP_InvalidID, "id must be specified");
	}

	$ResponseData = Post_GetByID($_REQUEST["id"]);
	if ($ResponseData)
		ReturnJSONData($ResponseData);
	else
		ReturnJSONError($Err_DP_IDNotFound, "wrong id");
}

?>