Api/v1/accounts (#8)

* start work on accounts module

* plodding away on the accounts endpoint

* groundwork for other account routes

* add password validator

* validation utils

* require account approval flags

* comments

* comments

* go fmt

* comments

* add distributor stub

* rename api to federator

* tidy a bit

* validate new account requests

* rename r router

* comments

* add domain blocks

* add some more shortcuts

* add some more shortcuts

* check email + username availability

* email block checking for signups

* chunking away at it

* tick off a few more things

* some fiddling with tests

* add mock package

* relocate repo

* move mocks around

* set app id on new signups

* initialize oauth server properly

* rename oauth server

* proper mocking tests

* go fmt ./...

* add required fields

* change name of func

* move validation to account.go

* more tests!

* add some file utility tools

* add mediaconfig

* new shortcut

* add some more fields

* add followrequest model

* add notify

* update mastotypes

* mock out storage interface

* start building media interface

* start on update credentials

* mess about with media a bit more

* test image manipulation

* media more or less working

* account update nearly working

* rearranging my package ;) ;) ;)

* phew big stuff!!!!

* fix type checking

* *fiddles*

* Add CreateTables func

* account registration flow working

* tidy

* script to step through auth flow

* add a lil helper for generating user uris

* fiddling with federation a bit

* update progress

* Tidying and linting

internal/apimodule/auth/auth.go

@@ -0,0 +1,89 @@
+/*
+   GoToSocial
+   Copyright (C) 2021 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 auth is a module that provides oauth functionality to a router.
+// It adds the following paths:
+//    /auth/sign_in
+//    /oauth/token
+//    /oauth/authorize
+// It also includes the oauthTokenMiddleware, which can be attached to a router to authenticate every request by Bearer token.
+package auth
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/sirupsen/logrus"
+	"github.com/superseriousbusiness/gotosocial/internal/apimodule"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/db/model"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+	"github.com/superseriousbusiness/gotosocial/internal/router"
+)
+
+const (
+	authSignInPath     = "/auth/sign_in"
+	oauthTokenPath     = "/oauth/token"
+	oauthAuthorizePath = "/oauth/authorize"
+)
+
+type authModule struct {
+	server oauth.Server
+	db     db.DB
+	log    *logrus.Logger
+}
+
+// New returns a new auth module
+func New(srv oauth.Server, db db.DB, log *logrus.Logger) apimodule.ClientAPIModule {
+	return &authModule{
+		server: srv,
+		db:     db,
+		log:    log,
+	}
+}
+
+// Route satisfies the RESTAPIModule interface
+func (m *authModule) Route(s router.Router) error {
+	s.AttachHandler(http.MethodGet, authSignInPath, m.signInGETHandler)
+	s.AttachHandler(http.MethodPost, authSignInPath, m.signInPOSTHandler)
+
+	s.AttachHandler(http.MethodPost, oauthTokenPath, m.tokenPOSTHandler)
+
+	s.AttachHandler(http.MethodGet, oauthAuthorizePath, m.authorizeGETHandler)
+	s.AttachHandler(http.MethodPost, oauthAuthorizePath, m.authorizePOSTHandler)
+
+	s.AttachMiddleware(m.oauthTokenMiddleware)
+	return nil
+}
+
+func (m *authModule) CreateTables(db db.DB) error {
+	models := []interface{}{
+		&oauth.Client{},
+		&oauth.Token{},
+		&model.User{},
+		&model.Account{},
+		&model.Application{},
+	}
+
+	for _, m := range models {
+		if err := db.CreateTable(m); err != nil {
+			return fmt.Errorf("error creating table: %s", err)
+		}
+	}
+	return nil
+}