3 files changed, 93 insertions, 0 deletions
diff --git a/src/ollama_web/prompts/__init__.py b/src/ollama_web/prompts/__init__.py
new file mode 100644
index 0000000..59bdb48
--- /dev/null
+++ b/src/ollama_web/prompts/__init__.py
@@ -0,0 +1,57 @@
+"""Localized prompt management for LLM prompts.
+
+Prompts live in JSON files under ``prompts/``. 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
+
+_PROMPTS_CACHE: dict[str, dict[str, Any]] = {}
+
+
+def _load_prompts(lang: str) -> dict[str, Any]:
+    """Load prompts for a language, falling back to an empty dict on error."""
+    path = _DIR / f"{lang}.json"
+    try:
+        with path.open("r", encoding="utf-8") as f:
+            return json.load(f)
+    except (FileNotFoundError, json.JSONDecodeError):
+        return {}
+
+
+def get_prompts(lang: str | None = None) -> dict[str, Any]:
+    """Return the full prompt dictionary for the requested language."""
+    lang = lang or settings.language or "ja"
+    if lang not in _PROMPTS_CACHE:
+        _PROMPTS_CACHE[lang] = _load_prompts(lang)
+    return _PROMPTS_CACHE[lang]
+
+
+def get_prompt(key: str, lang: str | None = None, fallback: str | None = None) -> str:
+    """Return a localized LLM prompt string.
+
+    Args:
+        key: Dot-separated path, e.g. ``"tool_system"``.
+        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 prompt string, or the fallback value if missing.
+    """
+    current: Any = get_prompts(lang)
+    for part in key.split("."):
+        if not isinstance(current, dict) or part not in current:
+            return fallback if fallback is not None else key
+        current = current[part]
+    if isinstance(current, str):
+        return current
+    return fallback if fallback is not None else key
diff --git a/src/ollama_web/prompts/en.json b/src/ollama_web/prompts/en.json
new file mode 100644
index 0000000..53af74b
--- /dev/null
+++ b/src/ollama_web/prompts/en.json
@@ -0,0 +1,18 @@
+{
+  "tool_system": "You can use web search, scraping, and file fetch tools. Do not run more searches than necessary in a single response; review the results before conducting the next investigation. Tool results are summarized, so grasp the important points and use them effectively.",
+  "tool_limit_instruction": "The tool call limit has been reached. Based on the search results and conversation so far, please summarize the final answer the user requested.",
+  "attachment_prefix": "The following is the content of files attached by the user:",
+  "fetch": {
+    "candidate": "Candidate",
+    "title": "Title",
+    "status": "Status",
+    "fetch_failed": "Failed to fetch",
+    "type": "Type",
+    "size": "Size",
+    "chars": "Characters",
+    "separator": "---",
+    "no_results": "No {file_type} files found for query: {query}",
+    "empty_query": "Empty query.",
+    "invalid_type": "Invalid file type."
+  }
+}
diff --git a/src/ollama_web/prompts/ja.json b/src/ollama_web/prompts/ja.json
new file mode 100644
index 0000000..40f6c7c
--- /dev/null
+++ b/src/ollama_web/prompts/ja.json
@@ -0,0 +1,18 @@
+{
+  "tool_system": "あなたはWeb検索・スクレイピング・ファイル取得ツールを利用できます。一度の回答で必要以上に多くの検索を同時に行わず、結果を確認してから次の調査を行ってください。各ツール結果は要約されて提供されるため、重要なポイントを把握して活用してください。",
+  "tool_limit_instruction": "ツール呼び出しの上限に達しました。これまでの検索結果と会話を元に、ユーザーが求めた回答を最終的にまとめてください。",
+  "attachment_prefix": "以下はユーザーが添付したファイルの内容です：",
+  "fetch": {
+    "candidate": "候補",
+    "title": "タイトル",
+    "status": "状態",
+    "fetch_failed": "取得失敗",
+    "type": "形式",
+    "size": "サイズ",
+    "chars": "文字数",
+    "separator": "---",
+    "no_results": "No {file_type} files found for query: {query}",
+    "empty_query": "Empty query.",
+    "invalid_type": "Invalid file type."
+  }
+}