[chore] The Big Middleware and API Refactor (tm) (#1250)

* interim commit: start refactoring middlewares into package under router

* another interim commit, this is becoming a big job

* another fucking massive interim commit

* refactor bookmarks to new style

* ambassador, wiz zeze commits you are spoiling uz

* she compiles, we're getting there

* we're just normal men; we're just innocent men

* apiutil

* whoopsie

* i'm glad noone reads commit msgs haha :blob_sweat:

* use that weirdo go-bytesize library for maxMultipartMemory

* fix media module paths

1 files changed, 129 insertions, 0 deletions

diff --git a/internal/api/client.go b/internal/api/client.go
new file mode 100644
index 000000000..7736a99f4
--- /dev/null
+++ b/internal/api/client.go
@@ -0,0 +1,129 @@
+/*
+   GoToSocial
+   Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package api
+
+import (
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/accounts"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/admin"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/apps"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/blocks"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/bookmarks"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/customemojis"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/favourites"
+	filter "github.com/superseriousbusiness/gotosocial/internal/api/client/filters"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/followrequests"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/instance"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/lists"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/media"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/notifications"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/search"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/statuses"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/streaming"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/timelines"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/user"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/middleware"
+	"github.com/superseriousbusiness/gotosocial/internal/processing"
+	"github.com/superseriousbusiness/gotosocial/internal/router"
+)
+
+type Client struct {
+	processor processing.Processor
+	db        db.DB
+
+	accounts       *accounts.Module       // api/v1/accounts
+	admin          *admin.Module          // api/v1/admin
+	apps           *apps.Module           // api/v1/apps
+	blocks         *blocks.Module         // api/v1/blocks
+	bookmarks      *bookmarks.Module      // api/v1/bookmarks
+	customEmojis   *customemojis.Module   // api/v1/custom_emojis
+	favourites     *favourites.Module     // api/v1/favourites
+	filters        *filter.Module         // api/v1/filters
+	followRequests *followrequests.Module // api/v1/follow_requests
+	instance       *instance.Module       // api/v1/instance
+	lists          *lists.Module          // api/v1/lists
+	media          *media.Module          // api/v1/media, api/v2/media
+	notifications  *notifications.Module  // api/v1/notifications
+	search         *search.Module         // api/v1/search, api/v2/search
+	statuses       *statuses.Module       // api/v1/statuses
+	streaming      *streaming.Module      // api/v1/streaming
+	timelines      *timelines.Module      // api/v1/timelines
+	user           *user.Module           // api/v1/user
+}
+
+func (c *Client) Route(r router.Router) {
+	// create a new group on the top level client 'api' prefix
+	apiGroup := r.AttachGroup("api")
+
+	// attach non-global middlewares appropriate to the client api
+	apiGroup.Use(
+		middleware.TokenCheck(c.db, c.processor.OAuthValidateBearerToken),
+		middleware.RateLimit(),
+		middleware.Gzip(),
+		middleware.CacheControl("no-store"), // never cache api responses
+	)
+
+	// for each client api module, pass it the Handle function
+	// so that the module can attach its routes to this group
+	h := apiGroup.Handle
+	c.accounts.Route(h)
+	c.admin.Route(h)
+	c.apps.Route(h)
+	c.blocks.Route(h)
+	c.bookmarks.Route(h)
+	c.customEmojis.Route(h)
+	c.favourites.Route(h)
+	c.filters.Route(h)
+	c.followRequests.Route(h)
+	c.instance.Route(h)
+	c.lists.Route(h)
+	c.media.Route(h)
+	c.notifications.Route(h)
+	c.search.Route(h)
+	c.statuses.Route(h)
+	c.streaming.Route(h)
+	c.timelines.Route(h)
+	c.user.Route(h)
+}
+
+func NewClient(db db.DB, p processing.Processor) *Client {
+	return &Client{
+		processor: p,
+		db:        db,
+
+		accounts:       accounts.New(p),
+		admin:          admin.New(p),
+		apps:           apps.New(p),
+		blocks:         blocks.New(p),
+		bookmarks:      bookmarks.New(p),
+		customEmojis:   customemojis.New(p),
+		favourites:     favourites.New(p),
+		filters:        filter.New(p),
+		followRequests: followrequests.New(p),
+		instance:       instance.New(p),
+		lists:          lists.New(p),
+		media:          media.New(p),
+		notifications:  notifications.New(p),
+		search:         search.New(p),
+		statuses:       statuses.New(p),
+		streaming:      streaming.New(p),
+		timelines:      timelines.New(p),
+		user:           user.New(p),
+	}
+}