From 175a848665c38fe035bc37aec326b78b30218628 Mon Sep 17 00:00:00 2001
From: Daniel Supernault <danielsupernault@gmail.com>
Date: Tue, 9 May 2023 00:21:46 -0600
Subject: [PATCH] Add /api/v1/followed_tags api endpoint

---
 app/Http/Controllers/Api/ApiV1Controller.php  | 47 ++++++++++++++++++-
 .../MastoApi/FollowedTagResource.php          | 33 +++++++++++++
 routes/api.php                                |  2 +
 3 files changed, 81 insertions(+), 1 deletion(-)
 create mode 100644 app/Http/Resources/MastoApi/FollowedTagResource.php

diff --git a/app/Http/Controllers/Api/ApiV1Controller.php b/app/Http/Controllers/Api/ApiV1Controller.php
index 1c4254fef..d142575c0 100644
--- a/app/Http/Controllers/Api/ApiV1Controller.php
+++ b/app/Http/Controllers/Api/ApiV1Controller.php
@@ -19,6 +19,7 @@ use App\{
 	Follower,
 	FollowRequest,
 	Hashtag,
+	HashtagFollow,
 	Instance,
 	Like,
 	Media,
@@ -99,6 +100,7 @@ use App\Jobs\FollowPipeline\FollowRejectPipeline;
 use Illuminate\Support\Facades\RateLimiter;
 use Purify;
 use Carbon\Carbon;
+use App\Http\Resources\MastoApi\FollowedTagResource;
 
 class ApiV1Controller extends Controller
 {
@@ -3644,7 +3646,7 @@ class ApiV1Controller extends Controller
 		return $this->json(StatusService::getState($status->id, $pid));
 	}
 
-   /**
+	/**
 	* GET /api/v1.1/discover/accounts/popular
 	*
 	*
@@ -3802,4 +3804,47 @@ class ApiV1Controller extends Controller
 
 		return $this->json([]);
 	}
+
+	/**
+	* GET /api/v1/followed_tags
+	*
+	*
+	* @return array
+	*/
+	public function getFollowedTags(Request $request)
+	{
+		abort_if(!$request->user(), 403);
+
+		if(config('pixelfed.bouncer.cloud_ips.ban_api')) {
+			abort_if(BouncerService::checkIp($request->ip()), 404);
+		}
+
+		$account = AccountService::get($request->user()->profile_id);
+
+		$this->validate($request, [
+			'cursor' => 'sometimes',
+			'limit' => 'sometimes|integer|min:1|max:200'
+		]);
+		$limit = $request->input('limit', 100);
+
+		$res = HashtagFollow::whereProfileId($account['id'])
+			->cursorPaginate($limit)->withQueryString();
+
+		$pagination = false;
+		$prevPage = $res->nextPageUrl();
+		$nextPage = $res->previousPageUrl();
+		if($nextPage && $prevPage) {
+			$pagination = '<' . $nextPage . '>; rel="next", <' . $prevPage . '>; rel="prev"';
+		} else if($nextPage && !$prevPage) {
+			$pagination = '<' . $nextPage . '>; rel="next"';
+		} else if(!$nextPage && $prevPage) {
+			$pagination = '<' . $prevPage . '>; rel="prev"';
+		}
+
+		if($pagination) {
+			return response()->json(FollowedTagResource::collection($res)->collection)
+				->header('Link', $pagination);
+		}
+		return response()->json(FollowedTagResource::collection($res)->collection);
+	}
 }
diff --git a/app/Http/Resources/MastoApi/FollowedTagResource.php b/app/Http/Resources/MastoApi/FollowedTagResource.php
new file mode 100644
index 000000000..3c690d05a
--- /dev/null
+++ b/app/Http/Resources/MastoApi/FollowedTagResource.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Http\Resources\MastoApi;
+
+use Illuminate\Http\Resources\Json\JsonResource;
+use Illuminate\Http\JsonResponse;
+use Cache;
+use App\Services\HashtagService;
+
+class FollowedTagResource extends JsonResource
+{
+    /**
+     * Transform the resource into an array.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return array|\Illuminate\Contracts\Support\Arrayable|\JsonSerializable
+     */
+    public function toArray($request)
+    {
+    	$tag = HashtagService::get($this->hashtag_id);
+
+    	if(!$tag || !isset($tag['name'])) {
+    		return [];
+    	}
+
+    	return [
+    		'name' => $tag['name'],
+    		'url' => config('app.url') . '/i/web/hashtag/' . $tag['slug'],
+    		'history' => [],
+    		'following' => true,
+    	];
+    }
+}
diff --git a/routes/api.php b/routes/api.php
index f05489c7f..2c35d2e06 100644
--- a/routes/api.php
+++ b/routes/api.php
@@ -89,6 +89,8 @@ Route::group(['prefix' => 'api'], function() use($middleware) {
 		Route::get('announcements', 'Api\ApiV1Controller@getAnnouncements')->middleware($middleware);
 		Route::get('markers', 'Api\ApiV1Controller@getMarkers')->middleware($middleware);
 		Route::post('markers', 'Api\ApiV1Controller@setMarkers')->middleware($middleware);
+
+		Route::get('followed_tags', 'Api\ApiV1Controller@getFollowedTags')->middleware($middleware);
 	});
 
 	Route::group(['prefix' => 'v2'], function() use($middleware) {