import { RequestHandler } from "../entities/RequestHandler";
import { GroupsHelper } from "../helpers/GroupsHelper";
import { GroupsAccessLevel, GroupInfo, GroupVisibilityLevel, GroupPostsCreationLevel, GroupRegistrationLevel } from "../entities/Group";
import { GroupMembershipLevels } from "../entities/GroupMember";

/**
 * Groups API controller
 * 
 * @author Pierre HUBERT
 */

/**
 * API groups registration levels
 */
const GROUPS_REGISTRATION_LEVELS = [];
GROUPS_REGISTRATION_LEVELS[GroupRegistrationLevel.OPEN_REGISTRATION] = "open";
GROUPS_REGISTRATION_LEVELS[GroupRegistrationLevel.MODERATED_REGISTRATION] = "moderated";
GROUPS_REGISTRATION_LEVELS[GroupRegistrationLevel.CLOSED_REGISTRATION] = "closed";

/**
 * API groups membership levels
 */
const GROUPS_MEMBERSHIP_LEVELS = [];
GROUPS_MEMBERSHIP_LEVELS[GroupMembershipLevels.ADMINISTRATOR] = "administrator";
GROUPS_MEMBERSHIP_LEVELS[GroupMembershipLevels.MODERATOR] = "moderator";
GROUPS_MEMBERSHIP_LEVELS[GroupMembershipLevels.MEMBER] = "member";
GROUPS_MEMBERSHIP_LEVELS[GroupMembershipLevels.INVITED] = "invited";
GROUPS_MEMBERSHIP_LEVELS[GroupMembershipLevels.PENDING] = "pending";
GROUPS_MEMBERSHIP_LEVELS[GroupMembershipLevels.VISITOR] = "visitor";


/**
 * API groups visibility levels
 */
const GROUPS_VISIBILITY_LEVELS = [];
GROUPS_VISIBILITY_LEVELS[GroupVisibilityLevel.OPEN_GROUP] = "open";
GROUPS_VISIBILITY_LEVELS[GroupVisibilityLevel.PRIVATE_GROUP] = "private";
GROUPS_VISIBILITY_LEVELS[GroupVisibilityLevel.SECRETE_GROUP] = "secrete";


/**
 * API posts creation levels
 */
const GROUPS_POSTS_LEVELS = [];
GROUPS_POSTS_LEVELS[GroupPostsCreationLevel.POSTS_LEVEL_MODERATORS] = "moderators";
GROUPS_POSTS_LEVELS[GroupPostsCreationLevel.POSTS_LEVEL_ALL_MEMBERS] = "members";


export class GroupsController {

	/**
	 * Get the list of groups of the user
	 * 
	 * @param h Request handler
	 */
	public static async GetListUser(h: RequestHandler) {
		h.send(await GroupsHelper.GetListUser(h.getUserId()));
	}

	/**
	 * Get information about a single group
	 * 
	 * @param h Request handler
	 */
	public static async GetInfoSingle(h: RequestHandler) {
		const groupID = await h.postGroupIDWithAccess("id", GroupsAccessLevel.LIMITED_ACCESS);
		const groupInfo = await GroupsHelper.GetInfo(groupID);
		
		h.send(this.GroupInfoToAPI(groupInfo));
	}

	/**
	 * Turn a GroupInfo object into a valid API object
	 * 
	 * @param info Information about the group
	 * @returns Generated object
	 */
	private static GroupInfoToAPI(info: GroupInfo) : any {
		return {
			id: info.id,
			name: info.name,
			icon_url: info.logoURL,
			number_members: info.membersCount,
			visibility: GROUPS_VISIBILITY_LEVELS[info.visiblity],
			registration_level: GROUPS_REGISTRATION_LEVELS[info.registrationLevel],
			posts_level: GROUPS_POSTS_LEVELS[info.postsCreationLevel],
			virtual_directory: info.virtualDirectory,
		}
	}
}