fix(download): accept mirror/www Civitai hosts and clarify linked-file errors

Follow-up to #1152:
- Accept civitai.green and www-prefixed hosts in isSupportedCivitaiPageHost,
  aligning with py/utils/civitai_utils.py and extensionReimportBridge.js, so
  download URLs on those hosts resolve too
- Drop the duplicate civitaiModelByVersion entry from the LoRA-specific
  endpoint map; the shared getApiEndpoints map now provides it for all types
- Report a distinct error when a linked fileId exists in the version but is
  not a downloadable model weight file (new linkedFileNotWeightFile locale key)

locales/de.json

@@ -1723,6 +1723,7 @@
                 "invalidUrl": "Ungültiges Modell-URL-Format",
                 "noVersions": "Keine Versionen für dieses Modell verfügbar",
                 "linkedFileNotFound": "[TODO: Translate] File {fileId} was not found in the requested model version.",
+                "linkedFileNotWeightFile": "[TODO: Translate] File {fileId} is not a downloadable model file.",
                 "mixedSources": "CivitAI- und Hugging Face-/ModelScope-URLs können nicht in derselben Charge gemischt werden.",
                 "noModelFiles": "In diesem Repository wurden keine Modelldateien gefunden."
             },

locales/en.json

@@ -1723,6 +1723,7 @@
         "invalidUrl": "Invalid model URL format",
         "noVersions": "No versions available for this model",
         "linkedFileNotFound": "File {fileId} was not found in the requested model version.",
+        "linkedFileNotWeightFile": "File {fileId} is not a downloadable model file.",
         "mixedSources": "Cannot mix CivitAI and Hugging Face / ModelScope URLs in the same batch.",
         "noModelFiles": "No model files found in this repository."
       },

locales/es.json

@@ -1723,6 +1723,7 @@
                 "invalidUrl": "Formato de URL de modelo inválido",
                 "noVersions": "No hay versiones disponibles para este modelo",
                 "linkedFileNotFound": "[TODO: Translate] File {fileId} was not found in the requested model version.",
+                "linkedFileNotWeightFile": "[TODO: Translate] File {fileId} is not a downloadable model file.",
                 "mixedSources": "No se pueden mezclar URL de CivitAI y Hugging Face / ModelScope en el mismo lote.",
                 "noModelFiles": "No se encontraron archivos de modelo en este repositorio."
             },

locales/fr.json

@@ -1723,6 +1723,7 @@
                 "invalidUrl": "Format d'URL de modèle invalide",
                 "noVersions": "Aucune version disponible pour ce modèle",
                 "linkedFileNotFound": "[TODO: Translate] File {fileId} was not found in the requested model version.",
+                "linkedFileNotWeightFile": "[TODO: Translate] File {fileId} is not a downloadable model file.",
                 "mixedSources": "Impossible de mélanger les URL CivitAI et Hugging Face / ModelScope dans le même lot.",
                 "noModelFiles": "Aucun fichier de modèle trouvé dans ce dépôt."
             },

locales/he.json

@@ -1723,6 +1723,7 @@
                 "invalidUrl": "פורמט URL של מודל לא חוקי",
                 "noVersions": "אין גרסאות זמינות למודל זה",
                 "linkedFileNotFound": "[TODO: Translate] File {fileId} was not found in the requested model version.",
+                "linkedFileNotWeightFile": "[TODO: Translate] File {fileId} is not a downloadable model file.",
                 "mixedSources": "לא ניתן לערבב כתובות URL של CivitAI ו-Hugging Face / ModelScope באותה קבוצה.",
                 "noModelFiles": "לא נמצאו קבצי מודל במאגר זה."
             },

locales/ja.json

@@ -1723,6 +1723,7 @@
                 "invalidUrl": "無効なモデル URL 形式",
                 "noVersions": "このモデルの利用可能なバージョンがありません",
                 "linkedFileNotFound": "[TODO: Translate] File {fileId} was not found in the requested model version.",
+                "linkedFileNotWeightFile": "[TODO: Translate] File {fileId} is not a downloadable model file.",
                 "mixedSources": "同じバッチ内でCivitAIとHugging Face / ModelScopeのURLを混在させることはできません。",
                 "noModelFiles": "このリポジトリにモデルファイルが見つかりませんでした。"
             },

locales/ko.json

@@ -1723,6 +1723,7 @@
                 "invalidUrl": "잘못된 모델 URL 형식",
                 "noVersions": "이 모델에 사용 가능한 버전이 없습니다",
                 "linkedFileNotFound": "[TODO: Translate] File {fileId} was not found in the requested model version.",
+                "linkedFileNotWeightFile": "[TODO: Translate] File {fileId} is not a downloadable model file.",
                 "mixedSources": "동일한 배치에서 CivitAI와 Hugging Face / ModelScope URL을 혼합할 수 없습니다.",
                 "noModelFiles": "이 저장소에서 모델 파일을 찾을 수 없습니다."
             },

locales/ru.json

@@ -1723,6 +1723,7 @@
                 "invalidUrl": "Неверный формат URL модели",
                 "noVersions": "Нет доступных версий для этой модели",
                 "linkedFileNotFound": "[TODO: Translate] File {fileId} was not found in the requested model version.",
+                "linkedFileNotWeightFile": "[TODO: Translate] File {fileId} is not a downloadable model file.",
                 "mixedSources": "Нельзя смешивать URL-адреса CivitAI и Hugging Face / ModelScope в одном пакете.",
                 "noModelFiles": "В этом репозитории не найдено файлов моделей."
             },

locales/zh-CN.json

@@ -1723,6 +1723,7 @@
                 "invalidUrl": "无效的模型 URL 格式",
                 "noVersions": "此模型没有可用版本",
                 "linkedFileNotFound": "[TODO: Translate] File {fileId} was not found in the requested model version.",
+                "linkedFileNotWeightFile": "[TODO: Translate] File {fileId} is not a downloadable model file.",
                 "mixedSources": "无法在同一批次中混合使用 CivitAI 和 Hugging Face / ModelScope URL。",
                 "noModelFiles": "在此仓库中未找到模型文件。"
             },

locales/zh-TW.json

@@ -1723,6 +1723,7 @@
                 "invalidUrl": "模型網址格式無效",
                 "noVersions": "此模型無可用版本",
                 "linkedFileNotFound": "[TODO: Translate] File {fileId} was not found in the requested model version.",
+                "linkedFileNotWeightFile": "[TODO: Translate] File {fileId} is not a downloadable model file.",
                 "mixedSources": "無法在同一批次中混合使用 CivitAI 和 Hugging Face / ModelScope URL。",
                 "noModelFiles": "在此倉庫中未找到模型檔案。"
             },

static/js/api/apiConfig.js

@@ -154,7 +154,6 @@ export const MODEL_SPECIFIC_ENDPOINTS = {
         civitaiUrl: `/api/lm/${MODEL_TYPES.LORA}/civitai-url`,
         metadata: `/api/lm/${MODEL_TYPES.LORA}/metadata`,
         getTriggerWordsPost: `/api/lm/${MODEL_TYPES.LORA}/get_trigger_words`,
-        civitaiModelByVersion: `/api/lm/${MODEL_TYPES.LORA}/civitai/model/version`,
         civitaiModelByHash: `/api/lm/${MODEL_TYPES.LORA}/civitai/model/hash`,
     },
     [MODEL_TYPES.CHECKPOINT]: {

static/js/managers/DownloadManager.js

@@ -553,11 +553,14 @@ export class DownloadManager {
     getLinkedFile(version, fileId) {
         if (!fileId) return null;
         const file = this._getWeightFiles(version).find(f => String(f.id) === fileId);
-        if (!file) {
-            throw new Error(translate('modals.download.errors.linkedFileNotFound', { fileId },
-                `File ${fileId} was not found in the requested model version.`));
+        if (file) return file;
+        const existsAsNonWeightFile = (version?.files || []).some(f => String(f.id) === fileId);
+        if (existsAsNonWeightFile) {
+            throw new Error(translate('modals.download.errors.linkedFileNotWeightFile', { fileId },
+                `File ${fileId} is not a downloadable model file.`));
         }
-        return file;
+        throw new Error(translate('modals.download.errors.linkedFileNotFound', { fileId },
+            `File ${fileId} was not found in the requested model version.`));
     }
 
     static parseModelUrl(url) {

static/js/utils/civitaiUtils.js

@@ -20,9 +20,11 @@ export const OptimizationMode = {
 
 export const DEFAULT_CIVITAI_PAGE_HOST = 'civitai.com';
 
+// Mirrors py/utils/civitai_utils.py (_SUPPORTED_CIVITAI_PAGE_HOSTS).
 const SUPPORTED_CIVITAI_PAGE_HOSTS = new Set([
     'civitai.com',
     'civitai.red',
+    'civitai.green',
 ]);
 
 export function normalizeCivitaiPageHost(hostname) {
@@ -218,7 +220,7 @@ export function isSupportedCivitaiPageHost(hostname) {
         return false;
     }
 
-    return SUPPORTED_CIVITAI_PAGE_HOSTS.has(hostname.toLowerCase());
+    return SUPPORTED_CIVITAI_PAGE_HOSTS.has(hostname.toLowerCase().replace(/^www\./, ''));
 }
 
 export function extractCivitaiModelUrlParts(url) {

tests/frontend/managers/downloadManager.downloadUrl.test.js

@@ -330,4 +330,25 @@ describe('DownloadManager Civitai download URLs', () => {
     expect(mockApiClient.fetchCivitaiModelByVersion).not.toHaveBeenCalled();
     expect(mockApiClient.fetchCivitaiVersions).not.toHaveBeenCalled();
   });
+
+  it.each([
+    'https://www.civitai.com/api/download/models/3409322?fileId=3301284',
+    'https://civitai.red/api/download/models/3409322?fileId=3301284',
+    'https://civitai.green/api/download/models/3409322?fileId=3301284',
+  ])('resolves download URLs on mirror and www-prefixed hosts: %s', async (mirrorUrl) => {
+    document.getElementById('modelUrl').value = mirrorUrl;
+    await manager.validateAndFetchVersions();
+    expect(mockApiClient.fetchCivitaiModelByVersion).toHaveBeenCalledWith('3409322');
+    expect(manager.currentVersion.id).toBe(3409322);
+    expect(manager.selectedFile.id).toBe(3301284);
+  });
+
+  it('reports a linked fileId that exists but is not a model weight file', async () => {
+    requestedVersion.files.push({ id: 555, type: 'Training Data', name: 'dataset.zip' });
+    document.getElementById('modelUrl').value = url.replace('3301284', '555');
+    await manager.validateAndFetchVersions();
+    expect(document.getElementById('urlError').textContent).toBe(
+      'File 555 is not a downloadable model file.');
+    expect(manager.selectedFile).toBeNull();
+  });
 });

tests/frontend/utils/civitaiUtils.test.js

@@ -337,14 +337,20 @@ describe('civitaiUtils', () => {
     });
 
     describe('isSupportedCivitaiPageHost', () => {
-        it('accepts civitai.com and civitai.red page hosts', () => {
+        it('accepts civitai.com, civitai.red and civitai.green page hosts', () => {
             expect(isSupportedCivitaiPageHost('civitai.com')).toBe(true);
             expect(isSupportedCivitaiPageHost('civitai.red')).toBe(true);
+            expect(isSupportedCivitaiPageHost('civitai.green')).toBe(true);
+        });
+
+        it('accepts www-prefixed page hosts', () => {
+            expect(isSupportedCivitaiPageHost('www.civitai.com')).toBe(true);
+            expect(isSupportedCivitaiPageHost('www.civitai.red')).toBe(true);
+            expect(isSupportedCivitaiPageHost('www.civitai.green')).toBe(true);
         });
 
         it('rejects unrelated hosts', () => {
-            expect(isSupportedCivitaiPageHost('www.civitai.com')).toBe(false);
-            expect(isSupportedCivitaiPageHost('www.civitai.red')).toBe(false);
+            expect(isSupportedCivitaiPageHost('civitai.com.evil.test')).toBe(false);
             expect(isSupportedCivitaiPageHost('example.com')).toBe(false);
             expect(isSupportedCivitaiPageHost('')).toBe(false);
             expect(isSupportedCivitaiPageHost(null)).toBe(false);