Can get the list of conversations

src/helpers/ConversationsHelper.ts

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+import { Conversation } from "../entities/Conversation";
+import { DatabaseHelper } from "./DatabaseHelper";
+
+/**
+ * Conversations helper
+ * 
+ * @author Pierre HUBERT
+ */
+
+const LIST_TABLE = "comunic_conversations_list";
+const USERS_TABLE = "comunic_conversations_users";
+const MESSAGES_TABLE = "comunic_conversations_messages";
+
+export class ConversationsHelper {
+
+	/**
+	 * Get the list of conversations of the user
+	 * 
+	 * @param userID Target user ID
+	 */
+	public static async GetListUser(userID: number) : Promise<Array<Conversation>> {
+		
+		// Fetch the list of conversations
+		const result = await DatabaseHelper.Query({
+			fields: [
+				"*",
+				"l.id as id",
+				"l.user_id as owner_id" // The field conflits with user.user_id
+			],
+			table: LIST_TABLE + " l",
+			joins: [
+
+				// Joins with conversation members table
+				{
+					table: USERS_TABLE + " u",
+					condition: "l.id = u.conv_id"
+				}
+
+			],
+			where: {
+				"u.user_id": userID
+			},
+			order: "l.last_active DESC"
+		});
+
+		const list = [];
+		for (const el of result) {
+			list.push(await this.DBToConversationInfo(el));
+		}
+		return list;
+	}
+
+
+	/**
+	 * Get the list of members of a conversation
+	 * 
+	 * @param convID The ID of the target conversation
+	 */
+	private static async GetConversationMembers(convID : number): Promise<Array<number>> {
+		const result = await DatabaseHelper.Query({
+			table: USERS_TABLE,
+			where: {
+				"conv_id": convID
+			},
+			fields: ["user_id"]
+		});
+
+		return result.map((e) => e.user_id);
+	}
+
+	/**
+	 * Turn a database entry into a conversation object
+	 * 
+	 * @param row 
+	 */
+	private static async DBToConversationInfo(row: any) : Promise<Conversation> {
+		return {
+			id: row.id,
+			ownerID: row.owner_id,
+			name: row.name,
+			lastActive: row.last_active,
+			timeCreate: row.time_add,
+			following: row.following,
+			sawLastMessage: row.saw_last_message,
+			members: await this.GetConversationMembers(row.id)
+		}
+	}
+}