From c222c8b054ddcf824f7a28f216f56730bc305d7d Mon Sep 17 00:00:00 2001
From: Pierre HUBERT <pierre.git@communiquons.org>
Date: Thu, 26 Mar 2020 17:08:56 +0100
Subject: [PATCH] Can delete all user groups

---
 src/controllers/AccountController.ts |  5 +++--
 src/controllers/GroupsController.ts  |  2 ++
 src/helpers/AccountHelper.ts         | 14 ++++++++++++++
 src/helpers/GroupsHelper.ts          | 28 ++++++++++++++++++++++++++++
 4 files changed, 47 insertions(+), 2 deletions(-)

diff --git a/src/controllers/AccountController.ts b/src/controllers/AccountController.ts
index 6cfa0f3..bb6fd69 100644
--- a/src/controllers/AccountController.ts
+++ b/src/controllers/AccountController.ts
@@ -298,8 +298,9 @@ export class AccountController {
 	public static async DeleteAccount(h: RequestHandler) {
 		await h.needUserPostPassword("password");
 
-		// TODO : implement
-		h.error(500, "Method not implemented yet.");
+		await AccountHelper.Delete(h.getUserId());
+		
+		h.error(500, "Method not completely implemented yet.");
 	}
 
 	/**
diff --git a/src/controllers/GroupsController.ts b/src/controllers/GroupsController.ts
index d9a57f3..356e0de 100644
--- a/src/controllers/GroupsController.ts
+++ b/src/controllers/GroupsController.ts
@@ -414,6 +414,7 @@ export class GroupsController {
 			h.error(404, "Membership not found!");
 
 		// If the user is an admin, he must not be the last admin of the group
+		// TODO : use new method
 		if(userID == h.getUserId() && currUserMembership.level == GroupMembershipLevels.ADMINISTRATOR
 			&& await GroupsHelper.CountMembersAtLevel(groupID, GroupMembershipLevels.ADMINISTRATOR) == 1)
 			h.error(401, "You are the last administrator of this group!");
@@ -533,6 +534,7 @@ export class GroupsController {
 		const groupID = await h.postGroupIDWithAccess("id", GroupsAccessLevel.LIMITED_ACCESS);
 		const level = await GroupsHelper.GetMembershipLevel(groupID, h.getUserId());
 
+		// TODO : use new method
 		if(level == GroupMembershipLevels.ADMINISTRATOR
 			&& await GroupsHelper.CountMembersAtLevel(groupID, GroupMembershipLevels.ADMINISTRATOR) == 1)
 			h.error(401, "You are the last administrator of the group!");
diff --git a/src/helpers/AccountHelper.ts b/src/helpers/AccountHelper.ts
index 0920d84..a9bdbf2 100644
--- a/src/helpers/AccountHelper.ts
+++ b/src/helpers/AccountHelper.ts
@@ -434,4 +434,18 @@ export class AccountHelper {
 
 		return data;
 	}
+
+	/**
+	 * Remove completely a user account
+	 * 
+	 * @param userID Target user ID
+	 */
+	public static async Delete(userID: number) {
+
+		// Delete all groups memberships
+		await GroupsHelper.DeleteAllUsersGroups(userID);
+
+		// TODO : continue work
+
+	}
 }
\ No newline at end of file
diff --git a/src/helpers/GroupsHelper.ts b/src/helpers/GroupsHelper.ts
index 78ce794..ee6a8d4 100644
--- a/src/helpers/GroupsHelper.ts
+++ b/src/helpers/GroupsHelper.ts
@@ -392,6 +392,17 @@ export class GroupsHelper {
 
 	}
 
+	/**
+	 * Check out whether a user is the last admin of a user or not
+	 * 
+	 * @param groupID Target group ID
+	 * @param userID Target user ID
+	 */
+	private static async IsLastAdmin(groupID: number, userID: number) : Promise<boolean> {
+		return await this.GetMembershipLevel(groupID, userID) == GroupMembershipLevels.ADMINISTRATOR
+			&& await GroupsHelper.CountMembersAtLevel(groupID, GroupMembershipLevels.ADMINISTRATOR) == 1;
+	}
+
 	/**
 	 * Get the current access of a user to a group
 	 * 
@@ -617,6 +628,23 @@ export class GroupsHelper {
 		});
 	}
 
+	/**
+	 * Delete all the groups the user belongs to
+	 * 
+	 * @param userID Target user ID
+	 */
+	public static async DeleteAllUsersGroups(userID: number) {
+		
+		// Process each group
+		for(const groupID of await this.GetListUser(userID)) {
+			if(await this.IsLastAdmin(groupID, userID))
+				await this.Delete(groupID);
+			
+			else
+				await this.DeleteMember(groupID, userID);
+		}
+	}
+
 	/**
 	 * Turn a database row into a {GroupInfo} object
 	 *