From cc9ddc21a01c433327ca0fbf444e27a2f15418a3 Mon Sep 17 00:00:00 2001
From: Bhasher <github.it@bhasher.com>
Date: Mon, 1 Jan 2024 17:31:17 +0100
Subject: [PATCH] Drag & Drop

---
 frontend/src/api/cards.ts              | 19 ++++++-
 frontend/src/components/card.svelte    |  4 +-
 frontend/src/components/column.svelte  | 74 +++++++++++++++++++++++---
 frontend/src/components/project.svelte | 29 ++++++----
 frontend/src/stores/interfaces.ts      |  2 -
 frontend/src/stores/smallStore.ts      |  5 ++
 6 files changed, 113 insertions(+), 20 deletions(-)

diff --git a/frontend/src/api/cards.ts b/frontend/src/api/cards.ts
index d2f4522..fd70cb9 100644
--- a/frontend/src/api/cards.ts
+++ b/frontend/src/api/cards.ts
@@ -26,10 +26,27 @@ export async function newCardApi(projectId: number): Promise<Card> {
 }
 
 export async function deleteCardApi(cardID: number): Promise<void> {
-	const response = await api.delete(`/v2/cards/${cardID}`);
+	const response = await api.delete(`/v1/cards/${cardID}`);
 
 	if (response.status !== status.NoContent) {
 		processError(response, 'Failed to delete card');
 		return Promise.reject();
 	}
 }
+
+export async function updateCardTagApi(
+	cardID: number,
+	tagID: number,
+	option_id: number,
+	value: string
+): Promise<void> {
+	const response = await api.put(`/v1/cards/${cardID}/tags/${tagID}`, {
+		option_id: option_id,
+		value: value
+	});
+
+	if (response.status !== status.NoContent) {
+		processError(response, 'Failed to update card tag');
+		return Promise.reject();
+	}
+}
diff --git a/frontend/src/components/card.svelte b/frontend/src/components/card.svelte
index 716d3cc..6745d04 100644
--- a/frontend/src/components/card.svelte
+++ b/frontend/src/components/card.svelte
@@ -1,16 +1,18 @@
 <script lang="ts">
 	import type { Card } from '../stores/interfaces';
 	import projectTags from '../stores/projectTags';
-	import { currentModalCard } from '../stores/smallStore';
+	import { currentDraggedCard, currentModalCard } from '../stores/smallStore';
 	import ModalCard from './modal_card.svelte';
 
 	export let card: Card;
 </script>
 
+<!-- on:dragend={() => currentDraggedCard.set(null)} -->
 <div
 	class="card"
 	tabindex="0"
 	draggable={true}
+	on:dragstart={() => currentDraggedCard.set(card)}
 	on:click={() => ($currentModalCard = card.id)}
 	role="button"
 	on:keydown={(e) => {
diff --git a/frontend/src/components/column.svelte b/frontend/src/components/column.svelte
index 1fbc267..efca83b 100644
--- a/frontend/src/components/column.svelte
+++ b/frontend/src/components/column.svelte
@@ -1,15 +1,76 @@
 <script lang="ts">
+	import { updateCardTagApi } from '../api/cards';
 	import type { Card, TagOption } from '../stores/interfaces';
+	import { cards, currentDraggedCard } from '../stores/smallStore';
+	import api, { processError } from '../utils/api';
+	import status from '../utils/status';
 	import CardC from './card.svelte';
 
-	export let title: string;
-	export let cards: Card[] = [];
+	export let option: TagOption;
+	export let columnCards: Card[] = [];
+
+	async function onDrop(e: DragEvent) {
+		e.preventDefault();
+		if ($currentDraggedCard && $currentDraggedCard.tags) {
+			for (let tag of $currentDraggedCard.tags) {
+				if (tag.tag_id == option.tag_id) {
+					try {
+						if (tag.option_id == option.id) return;
+						// DELETE
+						if (tag.option_id !== -1 && option.id === -1) {
+							const response = await api.delete(`/v1/cards/${tag.card_id}/tags/${tag.tag_id}`);
+
+							if (response.status !== status.NoContent) {
+								processError(response, 'Failed to delete tag');
+								return;
+							}
+						}
+						// CREATE
+						else if (tag.option_id == -1 && option.id !== -1) {
+							const response = await api.post(`/v1/cards/${tag.card_id}/tags/${tag.tag_id}`, {
+								value: tag.value,
+								option_id: option.id
+							});
+							if (response.status !== status.Created) {
+								processError(response, 'Failed to create tag');
+								return;
+							}
+						}
+						// UPDATE
+						else {
+							const response = await api.put(`/v1/cards/${tag.card_id}/tags/${tag.tag_id}`, {
+								value: tag.value,
+								option_id: option.id
+							});
+							if (response.status !== status.NoContent) {
+								processError(response, 'Failed to update tag');
+								return;
+							}
+						}
+
+						tag.option_id = option.id;
+						cards.reload();
+					} catch (e) {}
+					break;
+				}
+			}
+			currentDraggedCard.set(null);
+		}
+	}
 </script>
 
-<div class="column">
-	<h3>{title}</h3>
+<div
+	class="column"
+	role="listbox"
+	tabindex="-1"
+	on:drop={onDrop}
+	on:dragover={(e) => {
+		e.preventDefault();
+	}}
+>
+	<h3>{option.value}</h3>
 	<ul>
-		{#each cards as card}
+		{#each columnCards as card}
 			<CardC {card} />
 		{/each}
 	</ul>
@@ -21,7 +82,8 @@
 	}
 
 	.column {
-		width: 200px;
 		margin: 0 10px;
+		width: 200px;
+		height: 100%;
 	}
 </style>
diff --git a/frontend/src/components/project.svelte b/frontend/src/components/project.svelte
index fd75df6..3bcf9f6 100644
--- a/frontend/src/components/project.svelte
+++ b/frontend/src/components/project.svelte
@@ -1,11 +1,10 @@
 <script lang="ts">
 	import { onMount } from 'svelte';
-	import { type Project, type Card, parseCards, type View } from '../stores/interfaces';
+	import { type Project, type Card, type TagOption, type View } from '../stores/interfaces';
 	import projectTags from '../stores/projectTags';
-	import { deleteCardApi, newCardApi } from '../api/cards';
-	import { getProjectAPI, getProjectCardsAPI } from '../api/projects';
+	import { getProjectAPI } from '../api/projects';
 	import Column from './column.svelte';
-	import { cards, currentModalCard, currentView } from '../stores/smallStore';
+	import { cards, currentView } from '../stores/smallStore';
 
 	export let projectId: number;
 
@@ -69,7 +68,7 @@
 </svelte:head>
 
 {#if project}
-	<div id="project">
+	<section>
 		<header>
 			<h2>{project.title}</h2>
 			<button on:click={newCard}>New card</button>
@@ -78,22 +77,32 @@
 			<div class="grid">
 				{#each $projectTags[view.primary_tag_id].options as option}
 					<Column
-						title={option.value}
-						cards={$cards.filter((c) => c.tags.map((t) => t.option_id).includes(option.id))}
+						{option}
+						columnCards={$cards.filter((c) => c.tags.map((t) => t.option_id).includes(option.id))}
 					/>
 				{/each}
 				<Column
-					title={`No ${$projectTags[view.primary_tag_id]?.title || 'tag'}`}
-					cards={$cards.filter((c) => c.tags.find((t) => t.tag_id)?.option_id == -1 || false)}
+					option={{
+						id: -1,
+						tag_id: view.primary_tag_id,
+						value: `No ${$projectTags[view.primary_tag_id].title}`
+					}}
+					columnCards={$cards.filter((c) => c.tags.find((t) => t.tag_id)?.option_id == -1 || false)}
 				/>
 			</div>
 		{/if}
-	</div>
+	</section>
 {/if}
 
 <style>
+	section {
+		display: flex;
+		flex-direction: column;
+	}
+
 	.grid {
 		display: flex;
 		flex-direction: row;
+		flex: 1;
 	}
 </style>
diff --git a/frontend/src/stores/interfaces.ts b/frontend/src/stores/interfaces.ts
index 155ceed..850afe1 100644
--- a/frontend/src/stores/interfaces.ts
+++ b/frontend/src/stores/interfaces.ts
@@ -1,5 +1,3 @@
-import { toastAlert } from '../utils/toasts';
-
 export interface Project {
 	id: number;
 	title: string;
diff --git a/frontend/src/stores/smallStore.ts b/frontend/src/stores/smallStore.ts
index 556ffc6..ca19fe3 100644
--- a/frontend/src/stores/smallStore.ts
+++ b/frontend/src/stores/smallStore.ts
@@ -7,6 +7,8 @@ export const currentView = writable(null as View | null);
 
 export const currentModalCard = writable(-1);
 
+export const currentDraggedCard = writable(null as Card | null);
+
 export const cards = (() => {
 	const { subscribe, set, update } = writable([] as Card[]);
 
@@ -28,6 +30,9 @@ export const cards = (() => {
 				update((cards) => cards.filter((c) => c.id !== card.id));
 				currentModalCard.set(-1);
 			});
+		},
+		reload: () => {
+			update((cards) => cards);
 		}
 	};
 })();