merge: Add LibreTranslate as an option to External Services (!935)

View MR for information: https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/935

Closes #807

Approved-by: dakkar <dakkar@thenautilus.net>
Approved-by: Hazelnoot <acomputerdog@gmail.com>

packages/backend/migration/1741215877000-libetranslate.js

@@ -0,0 +1,18 @@
+/*
+ * SPDX-FileCopyrightText: marie and other Sharkey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+export class Libetranslate1741215877000 {
+    name = 'Libretranslate1741215877000';
+
+    async up(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "meta" ADD "libreTranslateURL" character varying(1024)`);
+		await queryRunner.query(`ALTER TABLE "meta" ADD "libreTranslateKey" character varying(1024)`);
+    }
+
+    async down(queryRunner) {
+        await queryRunner.query(`ALTER TABLE "meta" DROP COLUMN "libreTranslateURL"`);
+		await queryRunner.query(`ALTER TABLE "meta" DROP COLUMN "libreTranslateKey"`);
+    }
+}

packages/backend/src/core/entities/MetaEntityService.ts

@@ -135,7 +135,7 @@ export class MetaEntityService {
 			enableEmail: instance.enableEmail,
 			enableServiceWorker: instance.enableServiceWorker,
 
-			translatorAvailable: instance.deeplAuthKey != null || instance.deeplFreeMode && instance.deeplFreeInstance != null,
+			translatorAvailable: instance.deeplAuthKey != null || instance.libreTranslateURL != null || instance.deeplFreeMode && instance.deeplFreeInstance != null,
 
 			serverRules: instance.serverRules,
 

packages/backend/src/models/Meta.ts

@@ -403,6 +403,18 @@ export class MiMeta {
 	})
 	public deeplFreeInstance: string | null;
 
+	@Column('varchar', {
+		length: 1024,
+		nullable: true,
+	})
+	public libreTranslateURL: string | null;
+
+	@Column('varchar', {
+		length: 1024,
+		nullable: true,
+	})
+	public libreTranslateKey: string | null;
+
 	@Column('varchar', {
 		length: 1024,
 		nullable: true,

packages/backend/src/server/api/endpoints/admin/meta.ts

@@ -459,6 +459,14 @@ export const meta = {
 				type: 'string',
 				optional: false, nullable: true,
 			},
+			libreTranslateURL: {
+				type: 'string',
+				optional: false, nullable: true,
+			},
+			libreTranslateKey: {
+				type: 'string',
+				optional: false, nullable: true,
+			},
 			defaultDarkTheme: {
 				type: 'string',
 				optional: false, nullable: true,
@@ -652,7 +660,7 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				defaultLike: instance.defaultLike,
 				enableEmail: instance.enableEmail,
 				enableServiceWorker: instance.enableServiceWorker,
-				translatorAvailable: instance.deeplAuthKey != null,
+				translatorAvailable: instance.deeplAuthKey != null || instance.libreTranslateURL != null || instance.deeplFreeMode && instance.deeplFreeInstance != null,
 				cacheRemoteFiles: instance.cacheRemoteFiles,
 				cacheRemoteSensitiveFiles: instance.cacheRemoteSensitiveFiles,
 				pinnedUsers: instance.pinnedUsers,
@@ -700,6 +708,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				deeplIsPro: instance.deeplIsPro,
 				deeplFreeMode: instance.deeplFreeMode,
 				deeplFreeInstance: instance.deeplFreeInstance,
+				libreTranslateURL: instance.libreTranslateURL,
+				libreTranslateKey: instance.libreTranslateKey,
 				enableIpLogging: instance.enableIpLogging,
 				enableActiveEmailValidation: instance.enableActiveEmailValidation,
 				enableVerifymailApi: instance.enableVerifymailApi,

packages/backend/src/server/api/endpoints/admin/update-meta.ts

@@ -107,6 +107,8 @@ export const paramDef = {
 		deeplIsPro: { type: 'boolean' },
 		deeplFreeMode: { type: 'boolean' },
 		deeplFreeInstance: { type: 'string', nullable: true },
+		libreTranslateURL: { type: 'string', nullable: true },
+		libreTranslateKey: { type: 'string', nullable: true },
 		enableEmail: { type: 'boolean' },
 		email: { type: 'string', nullable: true },
 		smtpSecure: { type: 'boolean' },
@@ -577,6 +579,22 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				}
 			}
 
+			if (ps.libreTranslateURL !== undefined) {
+				if (ps.libreTranslateURL === '') {
+					set.libreTranslateURL = null;
+				} else {
+					set.libreTranslateURL = ps.libreTranslateURL;
+				}
+			}
+
+			if (ps.libreTranslateKey !== undefined) {
+				if (ps.libreTranslateKey === '') {
+					set.libreTranslateKey = null;
+				} else {
+					set.libreTranslateKey = ps.libreTranslateKey;
+				}
+			}
+
 			if (ps.enableIpLogging !== undefined) {
 				set.enableIpLogging = ps.enableIpLogging;
 			}

packages/backend/src/server/api/endpoints/notes/translate.ts

@@ -93,23 +93,21 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 				return;
 			}
 
-			if (this.serverSettings.deeplAuthKey == null && !this.serverSettings.deeplFreeMode) {
+			const canDeeplFree = this.serverSettings.deeplFreeMode && !!this.serverSettings.deeplFreeInstance;
-				throw new ApiError(meta.errors.unavailable);
+			const canDeepl = !!this.serverSettings.deeplAuthKey || canDeeplFree;
-			}
+			const canLibre = !!this.serverSettings.libreTranslateURL;
-
+			if (!canDeepl && !canLibre) throw new ApiError(meta.errors.unavailable);
-			if (this.serverSettings.deeplFreeMode && !this.serverSettings.deeplFreeInstance) {
-				throw new ApiError(meta.errors.unavailable);
-			}
 
 			let targetLang = ps.targetLang;
 			if (targetLang.includes('-')) targetLang = targetLang.split('-')[0];
 
+			// DeepL/DeepLX handling
+			if (canDeepl) {
 				const params = new URLSearchParams();
 				if (this.serverSettings.deeplAuthKey) params.append('auth_key', this.serverSettings.deeplAuthKey);
 				params.append('text', note.text);
 				params.append('target_lang', targetLang);
-
+				const endpoint = canDeeplFree ? this.serverSettings.deeplFreeInstance as string : this.serverSettings.deeplIsPro ? 'https://api.deepl.com/v2/translate' : 'https://api-free.deepl.com/v2/translate';
-			const endpoint = this.serverSettings.deeplFreeMode && this.serverSettings.deeplFreeInstance ? this.serverSettings.deeplFreeInstance : this.serverSettings.deeplIsPro ? 'https://api.deepl.com/v2/translate' : 'https://api-free.deepl.com/v2/translate';
 
 				const res = await this.httpRequestService.send(endpoint, {
 					method: 'POST',
@@ -150,6 +148,42 @@ export default class extends Endpoint<typeof meta, typeof paramDef> { // eslint-
 						text: json.data,
 					};
 				}
+			}
+
+			// LibreTranslate handling
+			if (canLibre) {
+				const res = await this.httpRequestService.send(this.serverSettings.libreTranslateURL as string, {
+					method: 'POST',
+					headers: {
+						'Content-Type': 'application/json',
+						Accept: 'application/json, */*',
+					},
+					body: JSON.stringify({
+						q: note.text,
+						source: 'auto',
+						target: targetLang,
+						format: 'text',
+						api_key: this.serverSettings.libreTranslateKey ?? '',
+					}),
+				});
+
+				const json = (await res.json()) as {
+					alternatives: string[],
+					detectedLanguage: { [key: string]: string | number },
+					translatedText: string,
+				};
+
+				const languageNames = new Intl.DisplayNames(['en'], {
+					type: 'language',
+				});
+
+				return {
+					sourceLang: languageNames.of(json.detectedLanguage.language as string),
+					text: json.translatedText,
+				};
+			}
+
+			return;
 		});
 	}
 }

packages/frontend/src/pages/admin/external-services.vue

@@ -8,6 +8,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 	<template #header><XHeader :actions="headerActions" :tabs="headerTabs"/></template>
 	<MkSpacer :contentMax="700" :marginMin="16" :marginMax="32">
 		<FormSuspense :p="init">
+			<div class="_gaps_m">
 				<MkFolder>
 					<template #label>DeepL Translation</template>
 
@@ -32,6 +33,25 @@ SPDX-License-Identifier: AGPL-3.0-only
 						<MkButton primary @click="save_deepl">Save</MkButton>
 					</div>
 				</MkFolder>
+
+				<MkFolder>
+					<template #label>LibreTranslate Translation</template>
+
+					<div class="_gaps_m">
+						<MkInput v-model="libreTranslateURL" :placeholder="'example.com/translate'">
+							<template #prefix><i class="ph-globe-simple ph-bold ph-lg"></i></template>
+							<template #label>LibreTranslate URL</template>
+						</MkInput>
+
+						<MkInput v-model="libreTranslateKey">
+							<template #prefix><i class="ti ti-key"></i></template>
+							<template #label>LibreTranslate Api Key</template>
+						</MkInput>
+
+						<MkButton primary @click="save_libre">Save</MkButton>
+					</div>
+				</MkFolder>
+			</div>
 		</FormSuspense>
 	</MkSpacer>
 </MkStickyContainer>
@@ -51,10 +71,12 @@ import { i18n } from '@/i18n.js';
 import { definePageMetadata } from '@/scripts/page-metadata.js';
 import MkFolder from '@/components/MkFolder.vue';
 
-const deeplAuthKey = ref<string>('');
+const deeplAuthKey = ref<string | null>('');
 const deeplIsPro = ref<boolean>(false);
 const deeplFreeMode = ref<boolean>(false);
-const deeplFreeInstance = ref<string>('');
+const deeplFreeInstance = ref<string | null>('');
+const libreTranslateURL = ref<string | null>('');
+const libreTranslateKey = ref<string | null>('');
 
 async function init() {
 	const meta = await misskeyApi('admin/meta');
@@ -62,6 +84,8 @@ async function init() {
 	deeplIsPro.value = meta.deeplIsPro;
 	deeplFreeMode.value = meta.deeplFreeMode;
 	deeplFreeInstance.value = meta.deeplFreeInstance;
+	libreTranslateURL.value = meta.libreTranslateURL;
+	libreTranslateKey.value = meta.libreTranslateKey;
 }
 
 function save_deepl() {
@@ -75,6 +99,15 @@ function save_deepl() {
 	});
 }
 
+function save_libre() {
+	os.apiWithDialog('admin/update-meta', {
+		libreTranslateURL: libreTranslateURL.value,
+		libreTranslateKey: libreTranslateKey.value,
+	}).then(() => {
+		fetchInstance(true);
+	});
+}
+
 const headerActions = computed(() => []);
 
 const headerTabs = computed(() => []);

packages/misskey-js/src/autogen/types.ts

@@ -8826,6 +8826,8 @@ export type operations = {
             deeplIsPro: boolean;
             deeplFreeMode: boolean;
             deeplFreeInstance: string | null;
+            libreTranslateURL: string | null;
+            libreTranslateKey: string | null;
             defaultDarkTheme: string | null;
             defaultLightTheme: string | null;
             description: string | null;
@@ -11401,6 +11403,8 @@ export type operations = {
           deeplIsPro?: boolean;
           deeplFreeMode?: boolean;
           deeplFreeInstance?: string | null;
+          libreTranslateURL?: string | null;
+          libreTranslateKey?: string | null;
           enableEmail?: boolean;
           email?: string | null;
           smtpSecure?: boolean;