FIX | fixed chats if order is taken

src/domain/chats/services/chats-fixed.service.ts

@@ -18,11 +18,31 @@ export class ChatsFixedService implements Chats.IChatsFixedService {
 
 		if (fixedCount >= this.MAX_FIXED_CHATS) throw new BadRequestException('Max fixed chats')
 
+		const orderTaken = await this.chatsFixedRepository.findOne({
+			userId,
+			order,
+		})
+
+		let itemsToRecalcOrder: Chats.IChatFixed[] = []
+
+		if (orderTaken)
+			itemsToRecalcOrder = await this.chatsFixedRepository
+				.createQueryBuilder('it')
+				.where('it.userId = :userId', { userId })
+				.andWhere('it.order >= :order', { order })
+				.getMany()
+
 		await this.chatsFixedRepository.insert({
 			userId,
 			chatId,
-			order: _.defaultTo(Number(order), 0),
+			order: _.defaultTo(Number(order), 1),
 		})
+
+		if (orderTaken) {
+			for await (const [index, item] of itemsToRecalcOrder.entries()) {
+				await this.chatsFixedRepository.update(item.id, { order: order + index + 1 })
+			}
+		}
 	}
 
 	public async unfix(userId: number, chatId: number) {
@@ -31,7 +51,7 @@ export class ChatsFixedService implements Chats.IChatsFixedService {
 
 			const fixedChats = await this.getFixed(userId)
 
-			let order = 0
+			let order = 1
 
 			for await (const item of fixedChats) {
 				await this.chatsFixedRepository.update(item.id, { order })