マルチ言語対応。MCP設定画面の言語切り替え表示にバグあり

3 files changed, 284 insertions, 0 deletions

diff --git a/src/ollama_web/i18n/__init__.py b/src/ollama_web/i18n/__init__.py
new file mode 100644
index 0000000..56dd217
--- /dev/null
+++ b/src/ollama_web/i18n/__init__.py
@@ -0,0 +1,84 @@
+"""Internationalization support for ollama-web.
+
+Messages live in JSON files under ``i18n/messages/``. The default language is
+read from ``config.settings.language`` and can be overridden per-call via the
+``lang`` argument.
+"""
+
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from typing import Any
+
+from ollama_web.config import settings
+
+_DIR = Path(__file__).resolve().parent
+_MESSAGES_DIR = _DIR / "messages"
+
+
+def _load_messages(lang: str) -> dict[str, Any]:
+    """Load messages for a language, falling back to an empty dict on error."""
+    path = _MESSAGES_DIR / f"{lang}.json"
+    try:
+        with path.open("r", encoding="utf-8") as f:
+            return json.load(f)
+    except (FileNotFoundError, json.JSONDecodeError):
+        return {}
+
+
+_MESSAGES_CACHE: dict[str, dict[str, Any]] = {}
+
+
+def get_messages(lang: str | None = None) -> dict[str, Any]:
+    """Return the full message dictionary for the requested language."""
+    lang = resolve_language(lang)
+    if lang not in _MESSAGES_CACHE:
+        _MESSAGES_CACHE[lang] = _load_messages(lang)
+    return _MESSAGES_CACHE[lang]
+
+
+def _resolve(key: str, data: dict[str, Any]) -> Any:
+    """Resolve a dot-separated key in a nested dictionary."""
+    current: Any = data
+    for part in key.split("."):
+        if not isinstance(current, dict) or part not in current:
+            return None
+        current = current[part]
+    return current
+
+
+def resolve_language(lang_source: str | None = None) -> str:
+    """Resolve the effective language.
+
+    Priority:
+        1. Explicit ``lang_source`` argument if it is a supported filename.
+        2. ``settings.language`` if it is supported.
+        3. ``"ja"`` as a safe default.
+
+    Supported languages are determined by the JSON files present in
+    ``i18n/messages/``.
+    """
+    supported = {p.stem for p in _MESSAGES_DIR.glob("*.json")}
+    candidates = [lang_source, settings.language]
+    for candidate in candidates:
+        if candidate and candidate in supported:
+            return candidate
+    return "ja"
+
+
+def t(key: str, lang: str | None = None, fallback: str | None = None) -> str:
+    """Return a localized message string.
+
+    Args:
+        key: Dot-separated path, e.g. ``"chat.input_placeholder"``.
+        lang: Optional language override. Uses ``settings.language`` when omitted.
+        fallback: Value returned when the key is missing. Defaults to the key itself.
+
+    Returns:
+        The localized string, or the fallback value if missing.
+    """
+    value = _resolve(key, get_messages(resolve_language(lang)))
+    if isinstance(value, str):
+        return value
+    return fallback if fallback is not None else key
diff --git a/src/ollama_web/i18n/messages/en.json b/src/ollama_web/i18n/messages/en.json
new file mode 100644
index 0000000..2195c6e
--- /dev/null
+++ b/src/ollama_web/i18n/messages/en.json
@@ -0,0 +1,100 @@
+{
+  "common": {
+    "send": "Send",
+    "stop": "Stop",
+    "clear": "Clear",
+    "save": "Save",
+    "delete": "Delete"
+  },
+  "chat": {
+    "sessions": "Sessions",
+    "new_session": "New session",
+    "session_list": "Session list",
+    "mcp_settings": "MCP Settings",
+    "model_label": "Model:",
+    "attach_file": "Attach file",
+    "input_placeholder": "Type a message… (Enter to send / Shift+Enter for newline)",
+    "no_sessions": "No sessions",
+    "delete_session": "Delete session",
+    "create_failed": "Failed to create session",
+    "delete_confirm": "Delete this session?",
+    "delete_failed": "Failed to delete session",
+    "upload_failed": "Failed to upload files",
+    "attachment_label": "Attached: {names}",
+    "attachment_files": "Attached files: {names}",
+    "stopped": "Generation stopped",
+    "error_prefix": "Error: {message}",
+    "generating": "ollama is generating a response…",
+    "processing": "Processing…",
+    "no_response": "(No response)",
+    "clear_failed": "Failed to clear",
+    "clear_messages_failed": "Failed to clear messages"
+  },
+  "mcp": {
+    "server_settings": "MCP Server Settings",
+    "add_server": "＋ Add server",
+    "server_name": "Server name",
+    "required": "(required)",
+    "optional": "(optional)",
+    "command": "Command",
+    "args": "Arguments",
+    "env": "Environment variables",
+    "cwd": "Working directory",
+    "url": "URL",
+    "headers": "Headers",
+    "timeout": "Timeout",
+    "sse": "SSE",
+    "stdio": "stdio",
+    "http_stream": "HTTP Stream",
+    "examples": {
+      "command": "e.g. npx",
+      "args": "e.g. -y @modelcontextprotocol/server-filesystem /tmp",
+      "env": "e.g. API_KEY=sk-xxx",
+      "cwd": "e.g. C:\\Users\\Home",
+      "url": "e.g. http://127.0.0.1:9000/mcp",
+      "headers": "e.g. Authorization=Bearer xxx",
+      "timeout": "e.g. 30"
+    }
+  },
+  "login": {
+    "title": "Login",
+    "pin_invalid": "Invalid PIN"
+  },
+  "roles": {
+    "system": "System",
+    "user": "You",
+    "assistant": "Assistant"
+  },
+  "status": {
+    "sending": "Sending…",
+    "fetching_response": "Fetching response…",
+    "done": "Done",
+    "connecting": "Connecting…",
+    "disconnected": "Disconnected",
+    "tool_limit_reached": "Tool call limit reached. Summarizing findings…",
+    "thinking": "Thinking process",
+    "executing_tool": "Executing {label}…",
+    "running": "Running…"
+  },
+  "errors": {
+    "generic": "An error occurred",
+    "vision_model_required": "Select a vision-capable model when sending messages containing images."
+  },
+  "session": {
+    "default_title": "New session"
+  },
+  "html": {
+    "lang": "en"
+  },
+  "tools": {
+    "web_search": "Web search",
+    "scrape_url": "Scraping",
+    "search_and_fetch": "File search and fetch",
+    "pdf_to_text": "PDF text extraction"
+  },
+  "mcp_messages": {
+    "save_failed": "Failed to save: {error}",
+    "saved": "MCP settings saved",
+    "save_error": "Failed to save MCP settings"
+  }
+}
diff --git a/src/ollama_web/i18n/messages/ja.json b/src/ollama_web/i18n/messages/ja.json
new file mode 100644
index 0000000..9d42f85
--- /dev/null
+++ b/src/ollama_web/i18n/messages/ja.json
@@ -0,0 +1,100 @@
+{
+  "common": {
+    "send": "送信",
+    "stop": "停止",
+    "clear": "クリア",
+    "save": "保存",
+    "delete": "削除"
+  },
+  "chat": {
+    "sessions": "セッション",
+    "new_session": "新規セッション",
+    "session_list": "セッション一覧",
+    "mcp_settings": "MCP設定",
+    "model_label": "モデル:",
+    "attach_file": "ファイルを添付",
+    "input_placeholder": "メッセージを入力… (Enter で送信 / Shift+Enter で改行)",
+    "no_sessions": "セッションがありません",
+    "delete_session": "セッションを削除",
+    "create_failed": "セッションの作成に失敗しました",
+    "delete_confirm": "このセッションを削除しますか？",
+    "delete_failed": "セッションの削除に失敗しました",
+    "upload_failed": "ファイルのアップロードに失敗しました",
+    "attachment_label": "添付: {names}",
+    "attachment_files": "添付ファイル: {names}",
+    "stopped": "生成を停止しました",
+    "error_prefix": "エラー: {message}",
+    "generating": "ollama が回答を生成中…",
+    "processing": "処理中…",
+    "no_response": "（応答なし）",
+    "clear_failed": "クリアに失敗しました",
+    "clear_messages_failed": "メッセージのクリアに失敗しました"
+  },
+  "mcp": {
+    "server_settings": "MCPサーバー設定",
+    "add_server": "＋ サーバー追加",
+    "server_name": "サーバー名",
+    "required": "(必須)",
+    "optional": "(任意)",
+    "command": "コマンド",
+    "args": "引数",
+    "env": "環境変数",
+    "cwd": "作業ディレクトリ",
+    "url": "URL",
+    "headers": "ヘッダー",
+    "timeout": "タイムアウト",
+    "sse": "SSE",
+    "stdio": "stdio",
+    "http_stream": "HTTP Stream",
+    "examples": {
+      "command": "例: npx",
+      "args": "例: -y @modelcontextprotocol/server-filesystem /tmp",
+      "env": "例: API_KEY=sk-xxx",
+      "cwd": "例: C:\\Users\\Home",
+      "url": "例: http://127.0.0.1:9000/mcp",
+      "headers": "例: Authorization=Bearer xxx",
+      "timeout": "例: 30"
+    }
+  },
+  "login": {
+    "title": "ログイン",
+    "pin_invalid": "PINが違います"
+  },
+  "roles": {
+    "system": "システム",
+    "user": "あなた",
+    "assistant": "アシスタント"
+  },
+  "status": {
+    "sending": "送信中...",
+    "fetching_response": "応答を取得中...",
+    "done": "完了",
+    "connecting": "接続中...",
+    "disconnected": "切断しました",
+    "tool_limit_reached": "ツール呼び出し上限に達しました。これまでの調査結果を整理中…",
+    "thinking": "思考プロセス",
+    "executing_tool": "{label} を実行中…",
+    "running": "実行中…"
+  },
+  "errors": {
+    "generic": "エラーが発生しました",
+    "vision_model_required": "画像を含むメッセージを送信する場合、vision 対応モデルを選択してください。"
+  },
+  "session": {
+    "default_title": "新しいセッション"
+  },
+  "html": {
+    "lang": "ja"
+  },
+  "tools": {
+    "web_search": "Web検索",
+    "scrape_url": "スクレイピング",
+    "search_and_fetch": "ファイル検索・取得",
+    "pdf_to_text": "PDFテキスト変換"
+  },
+  "mcp_messages": {
+    "save_failed": "保存に失敗しました: {error}",
+    "saved": "MCP設定を保存しました",
+    "save_error": "MCP設定の保存に失敗しました"
+  }
+}