From 601c41697561727aa2d5ea212cd9b0bada1966d8 Mon Sep 17 00:00:00 2001
From: Pierre HUBERT <pierre.git@communiquons.org>
Date: Sat, 23 Nov 2019 20:53:13 +0100
Subject: [PATCH] Can get information about a single conversation

---
 src/controllers/ConversationsController.ts | 31 +++++++++++++++++++++
 src/controllers/Routes.ts                  |  3 ++
 src/helpers/ConversationsHelper.ts         | 32 +++++++++++++++++++++-
 3 files changed, 65 insertions(+), 1 deletion(-)

diff --git a/src/controllers/ConversationsController.ts b/src/controllers/ConversationsController.ts
index c8504c1..0081c5e 100644
--- a/src/controllers/ConversationsController.ts
+++ b/src/controllers/ConversationsController.ts
@@ -20,6 +20,37 @@ export class ConversationsController {
 		handler.send(list.map(c => this.ConversationToAPI(c)));
 	}
 
+	/**
+	 * Get information about a single conversation
+	 * 
+	 * @param handler 
+	 */
+	public static async GetInfoSingle(handler: RequestHandler) {
+		const conversationID = await this.GetPostConversationId("conversationID", handler);
+		const conv = await ConversationsHelper.GetSingle(conversationID);
+
+		if(!conv)
+			throw Error("Could not get information about the conversation (but it should have been found though) !!");
+		
+		handler.send(this.ConversationToAPI(conv));
+	}
+
+	/**
+	 * Get and return safely a conversation ID specified in a $_POST Request
+	 * 
+	 * @param name The name of the POST field containing the ID of the conversation
+	 * @param handler
+	 */
+	private static async GetPostConversationId(name : string, handler: RequestHandler) : Promise<number> {
+		const convID = handler.postInt(name);
+
+		// Check out whether the user belongs to the conversation or not
+		if(!await ConversationsHelper.DoesUsersBelongsTo(handler.getUserId(), convID))
+			handler.error(401, "You are not allowed to perform queries on this conversation!");
+
+		return convID;
+	}
+
 	/**
 	 * Turn a conversation object into an API entry
 	 * 
diff --git a/src/controllers/Routes.ts b/src/controllers/Routes.ts
index fd0cc58..2ea7059 100644
--- a/src/controllers/Routes.ts
+++ b/src/controllers/Routes.ts
@@ -48,4 +48,7 @@ export const Routes : Route[] = [
 
 	// Conversations controller
 	{path: "/conversations/getList", cb: (h) => ConversationsController.GetList(h)},
+
+	{path: "/conversations/getInfoOne", cb: (h) => ConversationsController.GetInfoSingle(h)},
+	{path: "/conversations/getInfosOne", cb: (h) => ConversationsController.GetInfoSingle(h)}, // Legacy
 ]
\ No newline at end of file
diff --git a/src/helpers/ConversationsHelper.ts b/src/helpers/ConversationsHelper.ts
index c3894cb..abd0a71 100644
--- a/src/helpers/ConversationsHelper.ts
+++ b/src/helpers/ConversationsHelper.ts
@@ -50,6 +50,36 @@ export class ConversationsHelper {
 		return list;
 	}
 
+	/**
+	 * Get information about a single conversation
+	 * 
+	 * @param convID  The ID of the conversation to get
+	 */
+	public static async GetSingle(convID : number) : Promise<Conversation | null> {
+		const result = await DatabaseHelper.QueryRow({
+			fields: [
+				"*",
+				"l.id as id",
+				"l.user_id as owner_id",
+			],
+			table: LIST_TABLE + " l",
+			joins: [
+				// Joins with conversation members table
+				{
+					table: USERS_TABLE + " u",
+					condition: "l.id = u.conv_id"
+				}
+			],
+			where: {
+				"l.id": convID,
+			}
+		});
+
+		if(!result)
+			return null;
+		
+		return await this.DBToConversationInfo(result);
+	}
 
 	/**
 	 * Check out whether a user is the member of a conversation or not
@@ -97,7 +127,7 @@ export class ConversationsHelper {
 			lastActive: row.last_active,
 			timeCreate: row.time_add,
 			following: row.following,
-			sawLastMessage: row.saw_last_message,
+			sawLastMessage: row.saw_last_message == 1,
 			members: await this.GetConversationMembers(row.id)
 		}
 	}