From 2924b205fd3c15dbcffd19cf942657eadec243f5 Mon Sep 17 00:00:00 2001
From: Pierre HUBERT <pierre.git@communiquons.org>
Date: Fri, 3 Jan 2020 17:31:39 +0100
Subject: [PATCH] Get & return the comments of a post

---
 src/controllers/CommentsController.ts | 48 +++++++++++++++++++++++++++
 src/controllers/PostsController.ts    |  4 ++-
 src/entities/Comment.ts               | 39 ++++++++++++++++++++++
 src/helpers/CommentsHelper.ts         | 46 +++++++++++++++++++++++++
 4 files changed, 136 insertions(+), 1 deletion(-)
 create mode 100644 src/controllers/CommentsController.ts
 create mode 100644 src/entities/Comment.ts
 create mode 100644 src/helpers/CommentsHelper.ts

diff --git a/src/controllers/CommentsController.ts b/src/controllers/CommentsController.ts
new file mode 100644
index 0000000..cc84b70
--- /dev/null
+++ b/src/controllers/CommentsController.ts
@@ -0,0 +1,48 @@
+import { RequestHandler } from "../entities/RequestHandler";
+import { Comment } from "../entities/Comment";
+import { LikesHelper, LikesType } from "../helpers/LikesHelper";
+
+/**
+ * Comments controller
+ * 
+ * @author Pierre HUBERT
+ */
+
+export class CommentsController {
+
+
+	/**
+	 * Turn a list of comment object into API entries
+	 * 
+	 * @param h Request handler
+	 * @param l List of comments
+	 */
+	public static async CommentsToAPI(h: RequestHandler, l: Comment[]) : Promise<Array<any>> {
+		const list = [];
+		for (const comment of l) {
+			list.push(await this.CommentToAPI(h, comment));
+		}
+		return list;
+	}
+
+	/**
+	 * Turn a comment into an API object
+	 * 
+	 * @param h Request handler
+	 * @param c Comment
+	 */
+	public static async CommentToAPI(h: RequestHandler, c: Comment) : Promise<any> {
+		return {
+			ID: c.id,
+			userID: c.userID,
+			postID: c.postID,
+			time_sent: c.timeSent,
+			content: c.content,
+			img_path: c.hasImage ? c.imagePath : null,
+			img_url: c.hasImage ? c.imageURL : null,
+			likes: await LikesHelper.Count(c.id, LikesType.COMMENT),
+			userlike: h.signedIn ? await LikesHelper.IsLiking(h.getUserId(), c.id, LikesType.COMMENT) : false
+		}
+	}
+
+}
\ No newline at end of file
diff --git a/src/controllers/PostsController.ts b/src/controllers/PostsController.ts
index b467c37..a40dd9b 100644
--- a/src/controllers/PostsController.ts
+++ b/src/controllers/PostsController.ts
@@ -7,6 +7,8 @@ import { MoviesHelper } from "../helpers/MoviesHelper";
 import { SurveyHelper } from "../helpers/SurveyHelper";
 import { SurveyController } from "./SurveyController";
 import { LikesHelper, LikesType } from "../helpers/LikesHelper";
+import { CommentsHelper } from "../helpers/CommentsHelper";
+import { CommentsController } from "./CommentsController";
 
 /**
  * Posts controller
@@ -106,7 +108,7 @@ export class PostsController {
 			user_access: ACCESS_LEVELS_API[await PostsHelper.GetAccessLevel(h.optionnalUserID, p)],
 
 			// Load comments (if possible)
-			comments: await PostsHelper.AllowCommentsOnPost(p) ? "to come" : null,
+			comments: await PostsHelper.AllowCommentsOnPost(p) ? await CommentsController.CommentsToAPI(h, await CommentsHelper.Get(p.id)) : null,
 		};
 
 		return data;
diff --git a/src/entities/Comment.ts b/src/entities/Comment.ts
new file mode 100644
index 0000000..5b3baaa
--- /dev/null
+++ b/src/entities/Comment.ts
@@ -0,0 +1,39 @@
+import { pathUserData } from "../utils/UserDataUtils";
+
+/**
+ * Single comment information
+ * 
+ * @author Pierre HUBERT
+ */
+
+export interface CommentBuilder {
+	id: number,
+	timeSent: number,
+	userID: number,
+	postID: number,
+	content: string,
+	imagePath ?: string,
+}
+
+export class Comment implements CommentBuilder {
+	id: number;	timeSent: number;
+	userID: number;
+	postID: number;
+	content: string;
+	imagePath?: string;
+
+	public constructor(info: CommentBuilder) {
+		for (const key in info) {
+			if (info.hasOwnProperty(key))
+				this[key] = info[key];
+		}
+	}
+
+	get hasImage() : boolean {
+		return this.imagePath != null && this.imagePath != "" && this.imagePath != "null";
+	}
+
+	get imageURL() : string {
+		return pathUserData(this.imagePath);
+	}
+}
\ No newline at end of file
diff --git a/src/helpers/CommentsHelper.ts b/src/helpers/CommentsHelper.ts
new file mode 100644
index 0000000..0a092ee
--- /dev/null
+++ b/src/helpers/CommentsHelper.ts
@@ -0,0 +1,46 @@
+import { Comment } from "../entities/Comment";
+import { DatabaseHelper } from "./DatabaseHelper";
+
+/**
+ * Comments helper
+ * 
+ * @author Pierre HUBERT
+ */
+
+const COMMENTS_TABLE = "commentaires";
+
+export class CommentsHelper {
+
+	/**
+	 * Get the comments of a POST
+	 * 
+	 * @param postID Target post ID
+	 */
+	public static async Get(postID: number) : Promise<Array<Comment>> {
+		const results = await DatabaseHelper.Query({
+			table: COMMENTS_TABLE,
+			where: {
+				ID_texte: postID
+			},
+			order: "ID"
+		});
+
+		return results.map(this.DbToComment);
+	}
+
+	/**
+	 * Turn a database entry into a Comment object
+	 * 
+	 * @param row Database entry
+	 */
+	private static DbToComment(row: any) : Comment {
+		return new Comment({
+			id: row.ID,
+			userID: row.ID_personne,
+			postID: row.ID_texte,
+			timeSent: row.time_insert == null ? new Date(row.date_envoi).getTime() / 100 : row.time_insert,
+			content: row.commentaire,
+			imagePath: (row.image_commentaire != null && row.image_commentaire != "") ? row.image_commentaire.replace("file:", "") : null
+		});
+	}
+}
\ No newline at end of file