[feature] Allow users to export data via the settings panel (#3140)

* [feature] Allow users to export data via the settings panel

* rename/move some stuff

internal/api/client.go

@@ -28,6 +28,7 @@ import (
 	"github.com/superseriousbusiness/gotosocial/internal/api/client/bookmarks"
 	"github.com/superseriousbusiness/gotosocial/internal/api/client/conversations"
 	"github.com/superseriousbusiness/gotosocial/internal/api/client/customemojis"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/exports"
 	"github.com/superseriousbusiness/gotosocial/internal/api/client/favourites"
 	"github.com/superseriousbusiness/gotosocial/internal/api/client/featuredtags"
 	filtersV1 "github.com/superseriousbusiness/gotosocial/internal/api/client/filters/v1"
@@ -68,6 +69,7 @@ type Client struct {
 	bookmarks           *bookmarks.Module           // api/v1/bookmarks
 	conversations       *conversations.Module       // api/v1/conversations
 	customEmojis        *customemojis.Module        // api/v1/custom_emojis
+	exports             *exports.Module             // api/v1/exports
 	favourites          *favourites.Module          // api/v1/favourites
 	featuredTags        *featuredtags.Module        // api/v1/featured_tags
 	filtersV1           *filtersV1.Module           // api/v1/filters
@@ -116,6 +118,7 @@ func (c *Client) Route(r *router.Router, m ...gin.HandlerFunc) {
 	c.bookmarks.Route(h)
 	c.conversations.Route(h)
 	c.customEmojis.Route(h)
+	c.exports.Route(h)
 	c.favourites.Route(h)
 	c.featuredTags.Route(h)
 	c.filtersV1.Route(h)
@@ -152,6 +155,7 @@ func NewClient(state *state.State, p *processing.Processor) *Client {
 		bookmarks:           bookmarks.New(p),
 		conversations:       conversations.New(p),
 		customEmojis:        customemojis.New(p),
+		exports:             exports.New(p),
 		favourites:          favourites.New(p),
 		featuredTags:        featuredtags.New(p),
 		filtersV1:           filtersV1.New(p),

internal/api/client/exports/blocks.go

@@ -0,0 +1,76 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 exports
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+)
+
+// ExportBlocksGETHandler swagger:operation GET /api/v1/exports/blocks.csv exportBlocks
+//
+// Export a CSV file of accounts that you block.
+//
+//	---
+//	tags:
+//	- import-export
+//
+//	produces:
+//	- text/csv
+//
+//	security:
+//	- OAuth2 Bearer:
+//		- read:blocks
+//
+//	responses:
+//		'200':
+//			name: accounts
+//			description: CSV file of accounts that you block.
+//		'401':
+//			description: unauthorized
+//		'406':
+//			description: not acceptable
+//		'500':
+//			description: internal server error
+func (m *Module) ExportBlocksGETHandler(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.InstanceGetV1)
+		return
+	}
+
+	if _, err := apiutil.NegotiateAccept(c, apiutil.CSVHeaders...); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	records, errWithCode := m.processor.Account().ExportBlocks(
+		c.Request.Context(),
+		authed.Account,
+	)
+	if errWithCode != nil {
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
+		return
+	}
+
+	apiutil.EncodeCSVResponse(c.Writer, c.Request, http.StatusOK, records)
+}

internal/api/client/exports/exports.go

@@ -0,0 +1,54 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 exports
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/superseriousbusiness/gotosocial/internal/processing"
+)
+
+const (
+	BasePath      = "/v1/exports"
+	StatsPath     = BasePath + "/stats"
+	FollowingPath = BasePath + "/following.csv"
+	FollowersPath = BasePath + "/followers.csv"
+	ListsPath     = BasePath + "/lists.csv"
+	BlocksPath    = BasePath + "/blocks.csv"
+	MutesPath     = BasePath + "/mutes.csv"
+)
+
+type Module struct {
+	processor *processing.Processor
+}
+
+func New(processor *processing.Processor) *Module {
+	return &Module{
+		processor: processor,
+	}
+}
+
+func (m *Module) Route(attachHandler func(method string, path string, f ...gin.HandlerFunc) gin.IRoutes) {
+	attachHandler(http.MethodGet, StatsPath, m.ExportStatsGETHandler)
+	attachHandler(http.MethodGet, FollowingPath, m.ExportFollowingGETHandler)
+	attachHandler(http.MethodGet, FollowersPath, m.ExportFollowersGETHandler)
+	attachHandler(http.MethodGet, ListsPath, m.ExportListsGETHandler)
+	attachHandler(http.MethodGet, BlocksPath, m.ExportBlocksGETHandler)
+	attachHandler(http.MethodGet, MutesPath, m.ExportMutesGETHandler)
+}

internal/api/client/exports/exports_test.go

@@ -0,0 +1,275 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 exports_test
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/suite"
+	"github.com/superseriousbusiness/gotosocial/internal/api/client/exports"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/filter/visibility"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+	"github.com/superseriousbusiness/gotosocial/internal/state"
+	"github.com/superseriousbusiness/gotosocial/internal/typeutils"
+	"github.com/superseriousbusiness/gotosocial/testrig"
+)
+
+type ExportsTestSuite struct {
+	// Suite interfaces
+	suite.Suite
+	state state.State
+
+	// standard suite models
+	testTokens       map[string]*gtsmodel.Token
+	testClients      map[string]*gtsmodel.Client
+	testApplications map[string]*gtsmodel.Application
+	testUsers        map[string]*gtsmodel.User
+	testAccounts     map[string]*gtsmodel.Account
+
+	// module being tested
+	exportsModule *exports.Module
+}
+
+func (suite *ExportsTestSuite) SetupSuite() {
+	suite.testTokens = testrig.NewTestTokens()
+	suite.testClients = testrig.NewTestClients()
+	suite.testApplications = testrig.NewTestApplications()
+	suite.testUsers = testrig.NewTestUsers()
+	suite.testAccounts = testrig.NewTestAccounts()
+}
+
+func (suite *ExportsTestSuite) SetupTest() {
+	suite.state.Caches.Init()
+	testrig.StartNoopWorkers(&suite.state)
+
+	testrig.InitTestConfig()
+	testrig.InitTestLog()
+
+	suite.state.DB = testrig.NewTestDB(&suite.state)
+	suite.state.Storage = testrig.NewInMemoryStorage()
+
+	testrig.StartTimelines(
+		&suite.state,
+		visibility.NewFilter(&suite.state),
+		typeutils.NewConverter(&suite.state),
+	)
+
+	testrig.StandardDBSetup(suite.state.DB, nil)
+	testrig.StandardStorageSetup(suite.state.Storage, "../../../../testrig/media")
+
+	mediaManager := testrig.NewTestMediaManager(&suite.state)
+
+	federator := testrig.NewTestFederator(
+		&suite.state,
+		testrig.NewTestTransportController(
+			&suite.state,
+			testrig.NewMockHTTPClient(nil, "../../../../testrig/media"),
+		),
+		mediaManager,
+	)
+
+	processor := testrig.NewTestProcessor(
+		&suite.state,
+		federator,
+		testrig.NewEmailSender("../../../../web/template/", nil),
+		mediaManager,
+	)
+
+	suite.exportsModule = exports.New(processor)
+}
+
+func (suite *ExportsTestSuite) TriggerHandler(
+	handler gin.HandlerFunc,
+	path string,
+	contentType string,
+	application *gtsmodel.Application,
+	token *gtsmodel.Token,
+	user *gtsmodel.User,
+	account *gtsmodel.Account,
+) *httptest.ResponseRecorder {
+	// Set up request.
+	recorder := httptest.NewRecorder()
+	ctx, _ := testrig.CreateGinTestContext(recorder, nil)
+
+	// Authorize the request ctx as though it
+	// had passed through API auth handlers.
+	ctx.Set(oauth.SessionAuthorizedApplication, application)
+	ctx.Set(oauth.SessionAuthorizedToken, oauth.DBTokenToToken(token))
+	ctx.Set(oauth.SessionAuthorizedUser, user)
+	ctx.Set(oauth.SessionAuthorizedAccount, account)
+
+	// Create test request.
+	target := "http://localhost:8080/api" + path
+	ctx.Request = httptest.NewRequest(http.MethodGet, target, nil)
+	ctx.Request.Header.Set("Accept", contentType)
+
+	// Trigger handler.
+	handler(ctx)
+
+	return recorder
+}
+
+func (suite *ExportsTestSuite) TearDownTest() {
+	testrig.StandardDBTeardown(suite.state.DB)
+	testrig.StandardStorageTeardown(suite.state.Storage)
+	testrig.StopWorkers(&suite.state)
+}
+
+func (suite *ExportsTestSuite) TestExports() {
+	type testCase struct {
+		handler     gin.HandlerFunc
+		path        string
+		contentType string
+		application *gtsmodel.Application
+		token       *gtsmodel.Token
+		user        *gtsmodel.User
+		account     *gtsmodel.Account
+		expect      string
+	}
+
+	testCases := []testCase{
+		// Export Following
+		{
+			handler:     suite.exportsModule.ExportFollowingGETHandler,
+			path:        exports.FollowingPath,
+			contentType: apiutil.TextCSV,
+			application: suite.testApplications["application_1"],
+			token:       suite.testTokens["local_account_1"],
+			user:        suite.testUsers["local_account_1"],
+			account:     suite.testAccounts["local_account_1"],
+			expect: `Account address,Show boosts
+admin@localhost:8080,true
+1happyturtle@localhost:8080,true
+`,
+		},
+		// Export Followers.
+		{
+			handler:     suite.exportsModule.ExportFollowersGETHandler,
+			path:        exports.FollowingPath,
+			contentType: apiutil.TextCSV,
+			application: suite.testApplications["application_1"],
+			token:       suite.testTokens["local_account_1"],
+			user:        suite.testUsers["local_account_1"],
+			account:     suite.testAccounts["local_account_1"],
+			expect: `Account address
+1happyturtle@localhost:8080
+admin@localhost:8080
+`,
+		},
+		// Export Lists.
+		{
+			handler:     suite.exportsModule.ExportListsGETHandler,
+			path:        exports.ListsPath,
+			contentType: apiutil.TextCSV,
+			application: suite.testApplications["application_1"],
+			token:       suite.testTokens["local_account_1"],
+			user:        suite.testUsers["local_account_1"],
+			account:     suite.testAccounts["local_account_1"],
+			expect: `Cool Ass Posters From This Instance,admin@localhost:8080
+Cool Ass Posters From This Instance,1happyturtle@localhost:8080
+`,
+		},
+		// Export Mutes.
+		{
+			handler:     suite.exportsModule.ExportMutesGETHandler,
+			path:        exports.MutesPath,
+			contentType: apiutil.TextCSV,
+			application: suite.testApplications["application_1"],
+			token:       suite.testTokens["local_account_1"],
+			user:        suite.testUsers["local_account_1"],
+			account:     suite.testAccounts["local_account_1"],
+			expect: `Account address,Hide notifications
+`,
+		},
+		// Export Blocks.
+		{
+			handler:     suite.exportsModule.ExportBlocksGETHandler,
+			path:        exports.BlocksPath,
+			contentType: apiutil.TextCSV,
+			application: suite.testApplications["application_1"],
+			token:       suite.testTokens["local_account_2"],
+			user:        suite.testUsers["local_account_2"],
+			account:     suite.testAccounts["local_account_2"],
+			expect: `foss_satan@fossbros-anonymous.io
+`,
+		},
+		// Export Stats.
+		{
+			handler:     suite.exportsModule.ExportStatsGETHandler,
+			path:        exports.StatsPath,
+			contentType: apiutil.AppJSON,
+			application: suite.testApplications["application_1"],
+			token:       suite.testTokens["local_account_1"],
+			user:        suite.testUsers["local_account_1"],
+			account:     suite.testAccounts["local_account_1"],
+			expect: `{
+  "media_storage": "",
+  "followers_count": 2,
+  "following_count": 2,
+  "statuses_count": 8,
+  "lists_count": 1,
+  "blocks_count": 0,
+  "mutes_count": 0
+}`,
+		},
+	}
+
+	for _, test := range testCases {
+		recorder := suite.TriggerHandler(
+			test.handler,
+			test.path,
+			test.contentType,
+			test.application,
+			test.token,
+			test.user,
+			test.account,
+		)
+
+		// Check response code.
+		suite.EqualValues(http.StatusOK, recorder.Code)
+
+		// Check response body.
+		b, err := io.ReadAll(recorder.Body)
+		if err != nil {
+			suite.FailNow(err.Error())
+		}
+
+		// If json response, indent it nicely.
+		if recorder.Result().Header.Get("Content-Type") == "application/json" {
+			dst := &bytes.Buffer{}
+			if err := json.Indent(dst, b, "", "  "); err != nil {
+				suite.FailNow(err.Error())
+			}
+			b = dst.Bytes()
+		}
+
+		suite.Equal(test.expect, string(b))
+	}
+}
+
+func TestExportsTestSuite(t *testing.T) {
+	suite.Run(t, new(ExportsTestSuite))
+}

internal/api/client/exports/followers.go

@@ -0,0 +1,76 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 exports
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+)
+
+// ExportFollowersGETHandler swagger:operation GET /api/v1/exports/followers.csv exportFollowers
+//
+// Export a CSV file of accounts that follow you.
+//
+//	---
+//	tags:
+//	- import-export
+//
+//	produces:
+//	- text/csv
+//
+//	security:
+//	- OAuth2 Bearer:
+//		- read:follows
+//
+//	responses:
+//		'200':
+//			name: accounts
+//			description: CSV file of accounts that follow you.
+//		'401':
+//			description: unauthorized
+//		'406':
+//			description: not acceptable
+//		'500':
+//			description: internal server error
+func (m *Module) ExportFollowersGETHandler(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.InstanceGetV1)
+		return
+	}
+
+	if _, err := apiutil.NegotiateAccept(c, apiutil.CSVHeaders...); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	records, errWithCode := m.processor.Account().ExportFollowers(
+		c.Request.Context(),
+		authed.Account,
+	)
+	if errWithCode != nil {
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
+		return
+	}
+
+	apiutil.EncodeCSVResponse(c.Writer, c.Request, http.StatusOK, records)
+}

internal/api/client/exports/following.go

@@ -0,0 +1,76 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 exports
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+)
+
+// ExportFollowingGETHandler swagger:operation GET /api/v1/exports/following.csv exportFollowing
+//
+// Export a CSV file of accounts that you follow.
+//
+//	---
+//	tags:
+//	- import-export
+//
+//	produces:
+//	- text/csv
+//
+//	security:
+//	- OAuth2 Bearer:
+//		- read:follows
+//
+//	responses:
+//		'200':
+//			name: accounts
+//			description: CSV file of accounts that you follow.
+//		'401':
+//			description: unauthorized
+//		'406':
+//			description: not acceptable
+//		'500':
+//			description: internal server error
+func (m *Module) ExportFollowingGETHandler(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.InstanceGetV1)
+		return
+	}
+
+	if _, err := apiutil.NegotiateAccept(c, apiutil.CSVHeaders...); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	records, errWithCode := m.processor.Account().ExportFollowing(
+		c.Request.Context(),
+		authed.Account,
+	)
+	if errWithCode != nil {
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
+		return
+	}
+
+	apiutil.EncodeCSVResponse(c.Writer, c.Request, http.StatusOK, records)
+}

internal/api/client/exports/lists.go

@@ -0,0 +1,76 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 exports
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+)
+
+// ExportListsGETHandler swagger:operation GET /api/v1/exports/lists.csv exportLists
+//
+// Export a CSV file of lists created by you.
+//
+//	---
+//	tags:
+//	- import-export
+//
+//	produces:
+//	- text/csv
+//
+//	security:
+//	- OAuth2 Bearer:
+//		- read:lists
+//
+//	responses:
+//		'200':
+//			name: accounts
+//			description: CSV file of lists.
+//		'401':
+//			description: unauthorized
+//		'406':
+//			description: not acceptable
+//		'500':
+//			description: internal server error
+func (m *Module) ExportListsGETHandler(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.InstanceGetV1)
+		return
+	}
+
+	if _, err := apiutil.NegotiateAccept(c, apiutil.CSVHeaders...); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	records, errWithCode := m.processor.Account().ExportLists(
+		c.Request.Context(),
+		authed.Account,
+	)
+	if errWithCode != nil {
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
+		return
+	}
+
+	apiutil.EncodeCSVResponse(c.Writer, c.Request, http.StatusOK, records)
+}

internal/api/client/exports/mutes.go

@@ -0,0 +1,76 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 exports
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+)
+
+// ExportMutesGETHandler swagger:operation GET /api/v1/exports/mutes.csv exportMutes
+//
+// Export a CSV file of accounts that you mute.
+//
+//	---
+//	tags:
+//	- import-export
+//
+//	produces:
+//	- text/csv
+//
+//	security:
+//	- OAuth2 Bearer:
+//		- read:mutes
+//
+//	responses:
+//		'200':
+//			name: accounts
+//			description: CSV file of accounts that you mute.
+//		'401':
+//			description: unauthorized
+//		'406':
+//			description: not acceptable
+//		'500':
+//			description: internal server error
+func (m *Module) ExportMutesGETHandler(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.InstanceGetV1)
+		return
+	}
+
+	if _, err := apiutil.NegotiateAccept(c, apiutil.CSVHeaders...); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	records, errWithCode := m.processor.Account().ExportMutes(
+		c.Request.Context(),
+		authed.Account,
+	)
+	if errWithCode != nil {
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
+		return
+	}
+
+	apiutil.EncodeCSVResponse(c.Writer, c.Request, http.StatusOK, records)
+}

internal/api/client/exports/stats.go

@@ -0,0 +1,77 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 exports
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	apiutil "github.com/superseriousbusiness/gotosocial/internal/api/util"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/oauth"
+)
+
+// ExportStatsGETHandler swagger:operation GET /api/v1/exports/stats exportStats
+//
+// Returns informational stats on the number of items that can be exported for requesting account.
+//
+//	---
+//	tags:
+//	- import-export
+//
+//	produces:
+//	- application/json
+//
+//	security:
+//	- OAuth2 Bearer:
+//		- read:account
+//
+//	responses:
+//		'200':
+//			description: Export stats for the requesting account.
+//			schema:
+//				"$ref": "#/definitions/accountExportStats"
+//		'401':
+//			description: unauthorized
+//		'406':
+//			description: not acceptable
+//		'500':
+//			description: internal server error
+func (m *Module) ExportStatsGETHandler(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.InstanceGetV1)
+		return
+	}
+
+	if _, err := apiutil.NegotiateAccept(c, apiutil.JSONAcceptHeaders...); err != nil {
+		apiutil.ErrorHandler(c, gtserror.NewErrorNotAcceptable(err, err.Error()), m.processor.InstanceGetV1)
+		return
+	}
+
+	exportStats, errWithCode := m.processor.Account().ExportStats(
+		c.Request.Context(),
+		authed.Account,
+	)
+	if errWithCode != nil {
+		apiutil.ErrorHandler(c, errWithCode, m.processor.InstanceGetV1)
+		return
+	}
+
+	apiutil.JSON(c, http.StatusOK, exportStats)
+}

internal/api/model/exportimport.go

@@ -0,0 +1,60 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 model
+
+// AccountExportStats models an account's stats
+// specifically for the purpose of informing about
+// export sizes at the /api/v1/exports/stats endpoint.
+//
+// swagger:model accountExportStats
+type AccountExportStats struct {
+	// TODO: String representation of media storage size attributed to this account.
+	//
+	// example: 500MB
+	MediaStorage string `json:"media_storage"`
+
+	// Number of accounts following this account.
+	//
+	// example: 50
+	FollowersCount int `json:"followers_count"`
+
+	// Number of accounts followed by this account.
+	//
+	// example: 50
+	FollowingCount int `json:"following_count"`
+
+	// Number of statuses created by this account.
+	//
+	// example: 81986
+	StatusesCount int `json:"statuses_count"`
+
+	// Number of lists created by this account.
+	//
+	// example: 10
+	ListsCount int `json:"lists_count"`
+
+	// Number of accounts blocked by this account.
+	//
+	// example: 15
+	BlocksCount int `json:"blocks_count"`
+
+	// Number of accounts muted by this account.
+	//
+	// example: 11
+	MutesCount int `json:"mutes_count"`
+}

internal/api/util/mime.go

@@ -35,6 +35,7 @@ const (
 	TextXML           = `text/xml`
 	TextHTML          = `text/html`
 	TextCSS           = `text/css`
+	TextCSV           = `text/csv`
 )
 
 // JSONContentType returns whether is application/json(;charset=utf-8)? content-type.

internal/api/util/negotiate.go

@@ -88,6 +88,12 @@ var HostMetaHeaders = []string{
 	AppXML,
 }
 
+// CSVHeaders just contains the text/csv
+// MIME type, used for import/export.
+var CSVHeaders = []string{
+	TextCSV,
+}
+
 // NegotiateAccept takes the *gin.Context from an incoming request, and a
 // slice of Offers, and performs content negotiation for the given request
 // with the given content-type offers. It will return a string representation

internal/api/util/response.go

@@ -18,6 +18,7 @@
 package util
 
 import (
+	"encoding/csv"
 	"encoding/json"
 	"encoding/xml"
 	"io"
@@ -213,6 +214,47 @@ func EncodeXMLResponse(
 	putBuf(buf)
 }
 
+// EncodeCSVResponse encodes 'records' as CSV HTTP response
+// to ResponseWriter with given status code, using CSV content-type.
+func EncodeCSVResponse(
+	rw http.ResponseWriter,
+	r *http.Request,
+	statusCode int,
+	records [][]string,
+) {
+	// Acquire buffer.
+	buf := getBuf()
+
+	// Wrap buffer in CSV writer.
+	csvWriter := csv.NewWriter(buf)
+
+	// Write all the records to the buffer.
+	if err := csvWriter.WriteAll(records); err == nil {
+		// Respond with the now-known
+		// size byte slice within buf.
+		WriteResponseBytes(rw, r,
+			statusCode,
+			TextCSV,
+			buf.B,
+		)
+	} else {
+		// This will always be an csv error, we
+		// can't really add any more useful context.
+		log.Error(r.Context(), err)
+
+		// Any error returned here is unrecoverable,
+		// set Internal Server Error JSON response.
+		WriteResponseBytes(rw, r,
+			http.StatusInternalServerError,
+			AppJSON,
+			StatusInternalServerErrorJSON,
+		)
+	}
+
+	// Release.
+	putBuf(buf)
+}
+
 // writeResponseUnknownLength handles reading data of unknown legnth
 // efficiently into memory, and passing on to WriteResponseBytes().
 func writeResponseUnknownLength(

internal/db/bundb/list.go

@@ -106,6 +106,14 @@ func (l *listDB) GetListsForAccountID(ctx context.Context, accountID string) ([]
 	return l.GetListsByIDs(ctx, listIDs)
 }
 
+func (l *listDB) CountListsForAccountID(ctx context.Context, accountID string) (int, error) {
+	return l.db.
+		NewSelect().
+		Table("lists").
+		Where("? = ?", bun.Ident("account_id"), accountID).
+		Count(ctx)
+}
+
 func (l *listDB) PopulateList(ctx context.Context, list *gtsmodel.List) error {
 	var (
 		err  error

internal/db/bundb/relationship.go

@@ -178,6 +178,11 @@ func (r *relationshipDB) GetAccountBlocks(ctx context.Context, accountID string,
 	return r.GetBlocksByIDs(ctx, blockIDs)
 }
 
+func (r *relationshipDB) CountAccountBlocks(ctx context.Context, accountID string) (int, error) {
+	blockIDs, err := r.GetAccountBlockIDs(ctx, accountID, nil)
+	return len(blockIDs), err
+}
+
 func (r *relationshipDB) GetAccountFollowIDs(ctx context.Context, accountID string, page *paging.Page) ([]string, error) {
 	return loadPagedIDs(&r.state.Caches.DB.FollowIDs, ">"+accountID, page, func() ([]string, error) {
 		var followIDs []string

internal/db/bundb/relationship_mute.go

@@ -77,6 +77,11 @@ func (r *relationshipDB) GetMute(
 	)
 }
 
+func (r *relationshipDB) CountAccountMutes(ctx context.Context, accountID string) (int, error) {
+	muteIDs, err := r.getAccountMuteIDs(ctx, accountID, nil)
+	return len(muteIDs), err
+}
+
 func (r *relationshipDB) getMutesByIDs(ctx context.Context, ids []string) ([]*gtsmodel.UserMute, error) {
 	// Load all mutes IDs via cache loader callbacks.
 	mutes, err := r.state.Caches.DB.UserMute.LoadIDs("ID",

internal/db/list.go

@@ -33,6 +33,9 @@ type List interface {
 	// GetListsForAccountID gets all lists owned by the given accountID.
 	GetListsForAccountID(ctx context.Context, accountID string) ([]*gtsmodel.List, error)
 
+	// CountListsForAccountID counts the number of lists owned by the given accountID.
+	CountListsForAccountID(ctx context.Context, accountID string) (int, error)
+
 	// PopulateList ensures that the list's struct fields are populated.
 	PopulateList(ctx context.Context, list *gtsmodel.List) error
 

internal/db/relationship.go

@@ -179,6 +179,9 @@ type Relationship interface {
 	// GetAccountBlockIDs is like GetAccountBlocks, but returns just IDs.
 	GetAccountBlockIDs(ctx context.Context, accountID string, page *paging.Page) ([]string, error)
 
+	// CountAccountBlocks counts the number of blocks owned by the given account.
+	CountAccountBlocks(ctx context.Context, accountID string) (int, error)
+
 	// GetNote gets a private note from a source account on a target account, if it exists.
 	GetNote(ctx context.Context, sourceAccountID string, targetAccountID string) (*gtsmodel.AccountNote, error)
 
@@ -197,6 +200,9 @@ type Relationship interface {
 	// GetMute returns the mute from account1 targeting account2, if it exists, or an error if it doesn't.
 	GetMute(ctx context.Context, account1 string, account2 string) (*gtsmodel.UserMute, error)
 
+	// CountAccountMutes counts the number of mutes owned by the given account.
+	CountAccountMutes(ctx context.Context, accountID string) (int, error)
+
 	// PutMute attempts to insert or update the given account mute in the database.
 	PutMute(ctx context.Context, mute *gtsmodel.UserMute) error
 

internal/processing/account/export.go

@@ -0,0 +1,159 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 account
+
+import (
+	"context"
+	"errors"
+
+	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/db"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
+
+// ExportStats returns the requester's export stats,
+// ie., the counts of items that can be exported.
+func (p *Processor) ExportStats(
+	ctx context.Context,
+	requester *gtsmodel.Account,
+) (*apimodel.AccountExportStats, gtserror.WithCode) {
+	exportStats, err := p.converter.AccountToExportStats(ctx, requester)
+	if err != nil {
+		err = gtserror.Newf("db error getting export stats: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return exportStats, nil
+}
+
+// ExportFollowing returns a CSV file of
+// accounts that the requester follows.
+func (p *Processor) ExportFollowing(
+	ctx context.Context,
+	requester *gtsmodel.Account,
+) ([][]string, gtserror.WithCode) {
+	// Fetch accounts followed by requester,
+	// using a nil page to get everything.
+	following, err := p.state.DB.GetAccountFollows(ctx, requester.ID, nil)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		err = gtserror.Newf("db error getting follows: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	// Convert accounts to CSV-compatible
+	// records, with appropriate column headers.
+	records, err := p.converter.FollowingToCSV(ctx, following)
+	if err != nil {
+		err = gtserror.Newf("error converting follows to records: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return records, nil
+}
+
+// ExportFollowers returns a CSV file of
+// accounts that follow the requester.
+func (p *Processor) ExportFollowers(
+	ctx context.Context,
+	requester *gtsmodel.Account,
+) ([][]string, gtserror.WithCode) {
+	// Fetch accounts following requester,
+	// using a nil page to get everything.
+	followers, err := p.state.DB.GetAccountFollowers(ctx, requester.ID, nil)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		err = gtserror.Newf("db error getting followers: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	// Convert accounts to CSV-compatible
+	// records, with appropriate column headers.
+	records, err := p.converter.FollowersToCSV(ctx, followers)
+	if err != nil {
+		err = gtserror.Newf("error converting followers to records: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return records, nil
+}
+
+// ExportLists returns a CSV file of
+// lists created by the requester.
+func (p *Processor) ExportLists(
+	ctx context.Context,
+	requester *gtsmodel.Account,
+) ([][]string, gtserror.WithCode) {
+	lists, err := p.state.DB.GetListsForAccountID(ctx, requester.ID)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		err = gtserror.Newf("db error getting lists: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	// Convert lists to CSV-compatible records.
+	records, err := p.converter.ListsToCSV(ctx, lists)
+	if err != nil {
+		err = gtserror.Newf("error converting lists to records: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return records, nil
+}
+
+// ExportBlocks returns a CSV file of
+// account blocks created by the requester.
+func (p *Processor) ExportBlocks(
+	ctx context.Context,
+	requester *gtsmodel.Account,
+) ([][]string, gtserror.WithCode) {
+	blocks, err := p.state.DB.GetAccountBlocks(ctx, requester.ID, nil)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		err = gtserror.Newf("db error getting blocks: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	// Convert blocks to CSV-compatible records.
+	records, err := p.converter.BlocksToCSV(ctx, blocks)
+	if err != nil {
+		err = gtserror.Newf("error converting blocks to records: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return records, nil
+}
+
+// ExportMutes returns a CSV file of
+// account mutes created by the requester.
+func (p *Processor) ExportMutes(
+	ctx context.Context,
+	requester *gtsmodel.Account,
+) ([][]string, gtserror.WithCode) {
+	mutes, err := p.state.DB.GetAccountMutes(ctx, requester.ID, nil)
+	if err != nil && !errors.Is(err, db.ErrNoEntries) {
+		err = gtserror.Newf("db error getting mutes: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	// Convert mutes to CSV-compatible records.
+	records, err := p.converter.MutesToCSV(ctx, mutes)
+	if err != nil {
+		err = gtserror.Newf("error converting mutes to records: %w", err)
+		return nil, gtserror.NewErrorInternalError(err)
+	}
+
+	return records, nil
+}

internal/trans/export.go

@@ -102,7 +102,7 @@ func (e *exporter) exportDomainBlocks(ctx context.Context, file *os.File) ([]*tr
 	return domainBlocks, nil
 }
 
-func (e *exporter) exportFollows(ctx context.Context, accounts []*transmodel.Account, file *os.File) ([]*transmodel.Follow, error) {
+func (e *exporter) exportFollowing(ctx context.Context, accounts []*transmodel.Account, file *os.File) ([]*transmodel.Follow, error) {
 	followsUnique := make(map[string]*transmodel.Follow)
 
 	// for each account we want to export both where it's following and where it's followed
@@ -111,12 +111,12 @@ func (e *exporter) exportFollows(ctx context.Context, accounts []*transmodel.Acc
 		whereFollowing := []db.Where{{Key: "account_id", Value: a.ID}}
 		following := []*transmodel.Follow{}
 		if err := e.db.GetWhere(ctx, whereFollowing, &following); err != nil {
-			return nil, fmt.Errorf("exportFollows: error selecting follows owned by account %s: %s", a.ID, err)
+			return nil, fmt.Errorf("exportFollowing: error selecting follows owned by account %s: %s", a.ID, err)
 		}
 		for _, follow := range following {
 			follow.Type = transmodel.TransFollow
 			if err := e.simpleEncode(ctx, file, follow, follow.ID); err != nil {
-				return nil, fmt.Errorf("exportFollows: error encoding follow owned by account %s: %s", a.ID, err)
+				return nil, fmt.Errorf("exportFollowing: error encoding follow owned by account %s: %s", a.ID, err)
 			}
 			followsUnique[follow.ID] = follow
 		}
@@ -125,12 +125,12 @@ func (e *exporter) exportFollows(ctx context.Context, accounts []*transmodel.Acc
 		whereFollowed := []db.Where{{Key: "target_account_id", Value: a.ID}}
 		followed := []*transmodel.Follow{}
 		if err := e.db.GetWhere(ctx, whereFollowed, &followed); err != nil {
-			return nil, fmt.Errorf("exportFollows: error selecting follows targeting account %s: %s", a.ID, err)
+			return nil, fmt.Errorf("exportFollowing: error selecting follows targeting account %s: %s", a.ID, err)
 		}
 		for _, follow := range followed {
 			follow.Type = transmodel.TransFollow
 			if err := e.simpleEncode(ctx, file, follow, follow.ID); err != nil {
-				return nil, fmt.Errorf("exportFollows: error encoding follow targeting account %s: %s", a.ID, err)
+				return nil, fmt.Errorf("exportFollowing: error encoding follow targeting account %s: %s", a.ID, err)
 			}
 			followsUnique[follow.ID] = follow
 		}

internal/trans/exportminimal.go

@@ -69,7 +69,7 @@ func (e *exporter) ExportMinimal(ctx context.Context, path string) error {
 	}
 
 	// export all follows that relate to local accounts
-	follows, err := e.exportFollows(ctx, localAccounts, file)
+	follows, err := e.exportFollowing(ctx, localAccounts, file)
 	if err != nil {
 		return fmt.Errorf("ExportMinimal: error exporting follows: %s", err)
 	}

internal/typeutils/csv.go

@@ -0,0 +1,385 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// 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 typeutils
+
+import (
+	"context"
+	"strconv"
+
+	apimodel "github.com/superseriousbusiness/gotosocial/internal/api/model"
+	"github.com/superseriousbusiness/gotosocial/internal/config"
+	"github.com/superseriousbusiness/gotosocial/internal/gtscontext"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
+
+func (c *Converter) AccountToExportStats(
+	ctx context.Context,
+	a *gtsmodel.Account,
+) (*apimodel.AccountExportStats, error) {
+	// Ensure account stats populated.
+	if a.Stats == nil {
+		if err := c.state.DB.PopulateAccountStats(ctx, a); err != nil {
+			return nil, gtserror.Newf(
+				"error getting stats for account %s: %w",
+				a.ID, err,
+			)
+		}
+	}
+
+	listsCount, err := c.state.DB.CountListsForAccountID(ctx, a.ID)
+	if err != nil {
+		return nil, gtserror.Newf(
+			"error counting lists for account %s: %w",
+			a.ID, err,
+		)
+	}
+
+	blockingCount, err := c.state.DB.CountAccountBlocks(ctx, a.ID)
+	if err != nil {
+		return nil, gtserror.Newf(
+			"error counting lists for account %s: %w",
+			a.ID, err,
+		)
+	}
+
+	mutingCount, err := c.state.DB.CountAccountMutes(ctx, a.ID)
+	if err != nil {
+		return nil, gtserror.Newf(
+			"error counting lists for account %s: %w",
+			a.ID, err,
+		)
+	}
+
+	return &apimodel.AccountExportStats{
+		FollowersCount: *a.Stats.FollowersCount,
+		FollowingCount: *a.Stats.FollowingCount,
+		StatusesCount:  *a.Stats.StatusesCount,
+		ListsCount:     listsCount,
+		BlocksCount:    blockingCount,
+		MutesCount:     mutingCount,
+	}, nil
+}
+
+// FollowingToCSV converts a slice of follows into
+// a slice of CSV-compatible Following records.
+func (c *Converter) FollowingToCSV(
+	ctx context.Context,
+	following []*gtsmodel.Follow,
+) ([][]string, error) {
+	// Records should be length of
+	// input + 1 so we can add headers.
+	records := make([][]string, 1, len(following)+1)
+
+	// Add headers at the
+	// top of records.
+	records[0] = []string{
+		"Account address",
+		"Show boosts",
+	}
+
+	// We need to know our own domain for this.
+	// Try account domain, fall back to host.
+	thisDomain := config.GetAccountDomain()
+	if thisDomain == "" {
+		thisDomain = config.GetHost()
+	}
+
+	// For each item, add a record.
+	for _, follow := range following {
+		if follow.TargetAccount == nil {
+			// Retrieve target account.
+			var err error
+			follow.TargetAccount, err = c.state.DB.GetAccountByID(
+				// Barebones is fine here.
+				gtscontext.SetBarebones(ctx),
+				follow.TargetAccountID,
+			)
+			if err != nil {
+				return nil, gtserror.Newf(
+					"db error getting target account for follow %s: %w",
+					follow.ID, err,
+				)
+			}
+		}
+
+		domain := follow.TargetAccount.Domain
+		if domain == "" {
+			// Local account,
+			// use our domain.
+			domain = thisDomain
+		}
+
+		records = append(records, []string{
+			// Account address: eg., someone@example.org
+			// -- NOTE: without the leading '@'!
+			follow.TargetAccount.Username + "@" + domain,
+			// Show boosts: eg., true
+			strconv.FormatBool(*follow.ShowReblogs),
+		})
+	}
+
+	return records, nil
+}
+
+// FollowersToCSV converts a slice of follows into
+// a slice of CSV-compatible Followers records.
+func (c *Converter) FollowersToCSV(
+	ctx context.Context,
+	followers []*gtsmodel.Follow,
+) ([][]string, error) {
+	// Records should be length of
+	// input + 1 so we can add headers.
+	records := make([][]string, 1, len(followers)+1)
+
+	// Add header at the
+	// top of records.
+	records[0] = []string{
+		"Account address",
+	}
+
+	// We need to know our own domain for this.
+	// Try account domain, fall back to host.
+	thisDomain := config.GetAccountDomain()
+	if thisDomain == "" {
+		thisDomain = config.GetHost()
+	}
+
+	// For each item, add a record.
+	for _, follow := range followers {
+		if follow.Account == nil {
+			// Retrieve account.
+			var err error
+			follow.Account, err = c.state.DB.GetAccountByID(
+				// Barebones is fine here.
+				gtscontext.SetBarebones(ctx),
+				follow.AccountID,
+			)
+			if err != nil {
+				return nil, gtserror.Newf(
+					"db error getting account for follow %s: %w",
+					follow.ID, err,
+				)
+			}
+		}
+
+		domain := follow.Account.Domain
+		if domain == "" {
+			// Local account,
+			// use our domain.
+			domain = thisDomain
+		}
+
+		records = append(records, []string{
+			// Account address: eg., someone@example.org
+			// -- NOTE: without the leading '@'!
+			follow.Account.Username + "@" + domain,
+		})
+	}
+
+	return records, nil
+}
+
+// FollowersToCSV converts a slice of follows into
+// a slice of CSV-compatible Followers records.
+func (c *Converter) ListsToCSV(
+	ctx context.Context,
+	lists []*gtsmodel.List,
+) ([][]string, error) {
+	// We need to know our own domain for this.
+	// Try account domain, fall back to host.
+	thisDomain := config.GetAccountDomain()
+	if thisDomain == "" {
+		thisDomain = config.GetHost()
+	}
+
+	// NOTE: Mastodon-compatible lists
+	// CSV doesn't use column headers.
+	records := make([][]string, 0)
+
+	// For each item, add a record.
+	for _, list := range lists {
+		for _, entry := range list.ListEntries {
+			if entry.Follow == nil {
+				// Retrieve follow.
+				var err error
+				entry.Follow, err = c.state.DB.GetFollowByID(
+					ctx,
+					entry.FollowID,
+				)
+				if err != nil {
+					return nil, gtserror.Newf(
+						"db error getting follow for list entry %s: %w",
+						entry.ID, err,
+					)
+				}
+			}
+
+			if entry.Follow.TargetAccount == nil {
+				// Retrieve account.
+				var err error
+				entry.Follow.TargetAccount, err = c.state.DB.GetAccountByID(
+					// Barebones is fine here.
+					gtscontext.SetBarebones(ctx),
+					entry.Follow.TargetAccountID,
+				)
+				if err != nil {
+					return nil, gtserror.Newf(
+						"db error getting target account for list entry %s: %w",
+						entry.ID, err,
+					)
+				}
+			}
+
+			var (
+				username = entry.Follow.TargetAccount.Username
+				domain   = entry.Follow.TargetAccount.Domain
+			)
+
+			if domain == "" {
+				// Local account,
+				// use our domain.
+				domain = thisDomain
+			}
+
+			records = append(records, []string{
+				// List title: eg., Very cool list
+				list.Title,
+				// Account address: eg., someone@example.org
+				// -- NOTE: without the leading '@'!
+				username + "@" + domain,
+			})
+		}
+
+	}
+
+	return records, nil
+}
+
+// BlocksToCSV converts a slice of blocks into
+// a slice of CSV-compatible blocks records.
+func (c *Converter) BlocksToCSV(
+	ctx context.Context,
+	blocks []*gtsmodel.Block,
+) ([][]string, error) {
+	// We need to know our own domain for this.
+	// Try account domain, fall back to host.
+	thisDomain := config.GetAccountDomain()
+	if thisDomain == "" {
+		thisDomain = config.GetHost()
+	}
+
+	// NOTE: Mastodon-compatible blocks
+	// CSV doesn't use column headers.
+	records := make([][]string, 0, len(blocks))
+
+	// For each item, add a record.
+	for _, block := range blocks {
+		if block.TargetAccount == nil {
+			// Retrieve target account.
+			var err error
+			block.TargetAccount, err = c.state.DB.GetAccountByID(
+				// Barebones is fine here.
+				gtscontext.SetBarebones(ctx),
+				block.TargetAccountID,
+			)
+			if err != nil {
+				return nil, gtserror.Newf(
+					"db error getting target account for block %s: %w",
+					block.ID, err,
+				)
+			}
+		}
+
+		domain := block.TargetAccount.Domain
+		if domain == "" {
+			// Local account,
+			// use our domain.
+			domain = thisDomain
+		}
+
+		records = append(records, []string{
+			// Account address: eg., someone@example.org
+			// -- NOTE: without the leading '@'!
+			block.TargetAccount.Username + "@" + domain,
+		})
+	}
+
+	return records, nil
+}
+
+// MutesToCSV converts a slice of mutes into
+// a slice of CSV-compatible mute records.
+func (c *Converter) MutesToCSV(
+	ctx context.Context,
+	mutes []*gtsmodel.UserMute,
+) ([][]string, error) {
+	// Records should be length of
+	// input + 1 so we can add headers.
+	records := make([][]string, 1, len(mutes)+1)
+
+	// Add headers at the
+	// top of records.
+	records[0] = []string{
+		"Account address",
+		"Hide notifications",
+	}
+
+	// We need to know our own domain for this.
+	// Try account domain, fall back to host.
+	thisDomain := config.GetAccountDomain()
+	if thisDomain == "" {
+		thisDomain = config.GetHost()
+	}
+
+	// For each item, add a record.
+	for _, mute := range mutes {
+		if mute.TargetAccount == nil {
+			// Retrieve target account.
+			var err error
+			mute.TargetAccount, err = c.state.DB.GetAccountByID(
+				// Barebones is fine here.
+				gtscontext.SetBarebones(ctx),
+				mute.TargetAccountID,
+			)
+			if err != nil {
+				return nil, gtserror.Newf(
+					"db error getting target account for mute %s: %w",
+					mute.ID, err,
+				)
+			}
+		}
+
+		domain := mute.TargetAccount.Domain
+		if domain == "" {
+			// Local account,
+			// use our domain.
+			domain = thisDomain
+		}
+
+		records = append(records, []string{
+			// Account address: eg., someone@example.org
+			// -- NOTE: without the leading '@'!
+			mute.TargetAccount.Username + "@" + domain,
+			// Hide notifications: eg., true
+			strconv.FormatBool(*mute.Notifications),
+		})
+	}
+
+	return records, nil
+}