[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, 172 insertions, 0 deletions

diff --git a/internal/api/client/statuses/statuscreate.go b/internal/api/client/statuses/statuscreate.go
new file mode 100644
index 000000000..d36c93e77
--- /dev/null
+++ b/internal/api/client/statuses/statuscreate.go
@@ -0,0 +1,172 @@
+/*
+   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 statuses
+
+import (
+	"errors"
+	"fmt"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/config"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+	"github.com/superseriousbusiness/gotosocial/internal/validate"
+)
+
+// StatusCreatePOSTHandler swagger:operation POST /api/v1/statuses statusCreate
+//
+// Create a new status.
+//
+// The parameters can also be given in the body of the request, as JSON, if the content-type is set to 'application/json'.
+// The parameters can also be given in the body of the request, as XML, if the content-type is set to 'application/xml'.
+//
+//	---
+//	tags:
+//	- statuses
+//
+//	consumes:
+//	- application/json
+//	- application/xml
+//	- application/x-www-form-urlencoded
+//
+//	produces:
+//	- application/json
+//
+//	security:
+//	- OAuth2 Bearer:
+//		- write:statuses
+//
+//	responses:
+//		'200':
+//			description: "The newly created status."
+//			schema:
+//				"$ref": "#/definitions/status"
+//		'400':
+//			description: bad request
+//		'401':
+//			description: unauthorized
+//		'403':
+//			description: forbidden
+//		'404':
+//			description: not found
+//		'406':
+//			description: not acceptable
+//		'500':
+//			description: internal server error
+func (m *Module) StatusCreatePOSTHandler(c *gin.Context) {
+	authed, err := oauth.Authed(c, true, true, true, true)
+	if err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorUnauthorized(err, err.Error()), m.processor.InstanceGet)
+		return
+	}
+
+	if _, err := apiutil.NegotiateAccept(c, apiutil.JSONAcceptHeaders...); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGet)
+		return
+	}
+
+	form := &apimodel.AdvancedStatusCreateForm{}
+	if err := c.ShouldBind(form); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGet)
+		return
+	}
+
+	// DO NOT COMMIT THIS UNCOMMENTED, IT WILL CAUSE MASS CHAOS.
+	// this is being left in as an ode to kim's shitposting.
+	//
+	// user := authed.Account.DisplayName
+	// if user == "" {
+	// 	user = authed.Account.Username
+	// }
+	// form.Status += "\n\nsent from " + user + "'s iphone\n"
+
+	if err := validateCreateStatus(form); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorBadRequest(err, err.Error()), m.processor.InstanceGet)
+		return
+	}
+
+	apiStatus, errWithCode := m.processor.StatusCreate(c.Request.Context(), authed, form)
+	if errWithCode != nil {
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGet)
+		return
+	}
+
+	c.JSON(http.StatusOK, apiStatus)
+}
+
+func validateCreateStatus(form *apimodel.AdvancedStatusCreateForm) error {
+	hasStatus := form.Status != ""
+	hasMedia := len(form.MediaIDs) != 0
+	hasPoll := form.Poll != nil
+
+	if !hasStatus && !hasMedia && !hasPoll {
+		return errors.New("no status, media, or poll provided")
+	}
+
+	if hasMedia && hasPoll {
+		return errors.New("can't post media + poll in same status")
+	}
+
+	maxChars := config.GetStatusesMaxChars()
+	maxMediaFiles := config.GetStatusesMediaMaxFiles()
+	maxPollOptions := config.GetStatusesPollMaxOptions()
+	maxPollChars := config.GetStatusesPollOptionMaxChars()
+	maxCwChars := config.GetStatusesCWMaxChars()
+
+	if form.Status != "" {
+		if length := len([]rune(form.Status)); length > maxChars {
+			return fmt.Errorf("status too long, %d characters provided but limit is %d", length, maxChars)
+		}
+	}
+
+	if len(form.MediaIDs) > maxMediaFiles {
+		return fmt.Errorf("too many media files attached to status, %d attached but limit is %d", len(form.MediaIDs), maxMediaFiles)
+	}
+
+	if form.Poll != nil {
+		if form.Poll.Options == nil {
+			return errors.New("poll with no options")
+		}
+		if len(form.Poll.Options) > maxPollOptions {
+			return fmt.Errorf("too many poll options provided, %d provided but limit is %d", len(form.Poll.Options), maxPollOptions)
+		}
+		for _, p := range form.Poll.Options {
+			if length := len([]rune(p)); length > maxPollChars {
+				return fmt.Errorf("poll option too long, %d characters provided but limit is %d", length, maxPollChars)
+			}
+		}
+	}
+
+	if form.SpoilerText != "" {
+		if length := len([]rune(form.SpoilerText)); length > maxCwChars {
+			return fmt.Errorf("content-warning/spoilertext too long, %d characters provided but limit is %d", length, maxCwChars)
+		}
+	}
+
+	if form.Language != "" {
+		if err := validate.Language(form.Language); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}