import asyncio
import os
import tempfile
import unittest
from pathlib import Path
from unittest.mock import AsyncMock, patch

from fastapi.testclient import TestClient
from fastapi import HTTPException

_TEST_DATA_DIR = None
if "SOVEREIGNAI_DATA_DIR" not in os.environ:
    _TEST_DATA_DIR = tempfile.TemporaryDirectory(prefix="sovereignai-skills-tests-")
    os.environ["SOVEREIGNAI_DATA_DIR"] = _TEST_DATA_DIR.name

from app.main import AgentRequest, _execute_agent, app, safe_arithmetic


class AgentSkillTests(unittest.TestCase):
    @classmethod
    def setUpClass(cls) -> None:
        cls.client = TestClient(app)
        cls.workspace = str(Path(__file__).resolve().parents[1])

    def test_skill_catalog_discloses_scope_and_permissions(self) -> None:
        response = self.client.get("/v1/agent/skills")

        self.assertEqual(response.status_code, 200)
        skills = {item["id"]: item for item in response.json()["skills"]}
        self.assertEqual(set(skills), {"code_explain", "code_review", "test_plan"})
        self.assertNotIn("propose_file_change", skills["code_explain"]["allowed_tools"])
        self.assertIn("propose_file_change", skills["code_review"]["allowed_tools"])
        self.assertEqual(response.json()["default"], None)

    def test_safe_arithmetic_accepts_common_unicode_operator_symbols(self) -> None:
        self.assertEqual(safe_arithmetic("137 × 29"), 3973.0)
        self.assertEqual(safe_arithmetic("12 ÷ 3 − 1"), 3.0)

    def test_explicit_calculator_request_uses_bounded_local_calculator(self) -> None:
        with patch("app.main.get_completion", new=AsyncMock()) as model:
            result = asyncio.run(
                _execute_agent(
                    AgentRequest(
                        task="استخدم الحاسبة المتاحة لحساب 137 × 29، ثم أجب بالناتج فقط.",
                        model="qwen2.5:1.5b-instruct-q4_K_M",
                    )
                )
            )

        model.assert_not_awaited()
        self.assertEqual(result["tool"], "calculator")
        self.assertEqual(result["result"], 3973.0)

    def test_explain_skill_is_sent_to_model_and_hides_file_write_tool(self) -> None:
        completion = {"choices": [{"message": {"content": "شرح مختصر."}}]}
        with patch("app.main.get_completion", new=AsyncMock(return_value=completion)) as model:
            result = asyncio.run(
                _execute_agent(
                    AgentRequest(
                        task="اشرح بنية المشروع باختصار",
                        workspace_path=self.workspace,
                        skill_id="code_explain",
                    )
                )
            )

        payload = model.await_args.args[0]
        tool_names = [tool["function"]["name"] for tool in payload["tools"]]
        system = payload["messages"][0]["content"]
        self.assertIn("شرح الكود", system)
        self.assertIn("ميّز بين ما قرأته وما استنتجته", system)
        self.assertEqual(tool_names, ["calculator", "search_workspace", "search_knowledge"])
        self.assertEqual(result["skill"], "code_explain")

    def test_review_skill_exposes_preview_tool_but_never_applies_it(self) -> None:
        completion = {"choices": [{"message": {"content": "سأعرض النتائج."}}]}
        with patch("app.main.get_completion", new=AsyncMock(return_value=completion)) as model:
            result = asyncio.run(
                _execute_agent(
                    AgentRequest(
                        task="راجع الملفات دون تعديل",
                        workspace_path=self.workspace,
                        skill_id="code_review",
                    )
                )
            )

        payload = model.await_args.args[0]
        tool_names = [tool["function"]["name"] for tool in payload["tools"]]
        self.assertIn("propose_file_change", tool_names)
        self.assertIn("لا تطبق الكتابة", payload["messages"][0]["content"])
        self.assertEqual(result["skill"], "code_review")
        self.assertNotIn("proposal", result)

    def test_preselected_file_is_read_once_without_redundant_search_call(self) -> None:
        completion = {"choices": [{"message": {"content": "المهارات مسجلة في قاموس محلي."}}]}
        with patch("app.main.get_completion", new=AsyncMock(return_value=completion)) as model:
            result = asyncio.run(
                _execute_agent(
                    AgentRequest(
                        task="اشرح الملف المحدد",
                        workspace_path=self.workspace,
                        workspace_files=["app/skills.py"],
                        skill_id="code_explain",
                    )
                )
            )

        self.assertEqual(model.await_count, 1)
        self.assertEqual(result["files"], ["app/skills.py"])
        self.assertIn("Curated, local agent skills", model.await_args.args[0]["messages"][1]["content"])

    def test_explicit_knowledge_search_is_prefetched_before_model_answer(self) -> None:
        completion = {"choices": [{"message": {"content": "المرحلة 5 تضيف الفهرسة المحلية."}}]}
        match = {"path": "ROADMAP.md", "chunk": 2, "text": "SQLite FTS5 local index", "excerpt": "SQLite FTS5"}
        with (
            patch("app.main.knowledge.search", return_value=[match]) as retrieve,
            patch("app.main.get_completion", new=AsyncMock(return_value=completion)) as model,
        ):
            result = asyncio.run(
                _execute_agent(
                    AgentRequest(
                        task="ابحث في فهرس المعرفة عن المرحلة 5",
                        workspace_path=self.workspace,
                        skill_id="test_plan",
                    )
                )
            )

        retrieve.assert_called_once()
        model_payload = model.await_args.args[0]
        self.assertEqual(model_payload["max_tokens"], 384)
        self.assertIn("SQLite FTS5 local index", model_payload["messages"][1]["content"])
        self.assertNotIn(
            "search_knowledge",
            [tool["function"]["name"] for tool in model_payload["tools"]],
        )
        self.assertEqual(result["tool"], "search_knowledge")
        self.assertEqual(result["files"], ["ROADMAP.md"])

    def test_test_plan_skill_only_advertises_workspace_search(self) -> None:
        completion = {"choices": [{"message": {"content": "ثلاث حالات اختبار مقترحة."}}]}
        with patch("app.main.get_completion", new=AsyncMock(return_value=completion)) as model:
            asyncio.run(
                _execute_agent(
                    AgentRequest(
                        task="أنشئ خطة اختبار",
                        workspace_path=self.workspace,
                        skill_id="test_plan",
                    )
                )
            )

        tools = model.await_args.args[0]["tools"]
        self.assertEqual(
            [tool["function"]["name"] for tool in tools],
            ["search_workspace", "search_knowledge"],
        )

    def test_server_rejects_tool_call_outside_active_skill_permissions(self) -> None:
        completion = {
            "choices": [
                {
                    "message": {
                        "tool_calls": [
                            {
                                "id": "call-forbidden",
                                "function": {
                                    "name": "propose_file_change",
                                    "arguments": '{"path":"new.py","operation":"create","content":"print(1)"}',
                                },
                            }
                        ]
                    }
                }
            ]
        }
        with patch("app.main.get_completion", new=AsyncMock(return_value=completion)):
            with self.assertRaises(HTTPException) as error:
                asyncio.run(
                    _execute_agent(
                        AgentRequest(
                            task="اشرح المشروع",
                            workspace_path=self.workspace,
                            skill_id="code_explain",
                        )
                    )
                )

        self.assertEqual(error.exception.status_code, 422)

    def test_unknown_skill_is_rejected_by_request_contract(self) -> None:
        response = self.client.post(
            "/v1/agent/run",
            json={"task": "سؤال", "skill_id": "execute_shell"},
        )

        self.assertEqual(response.status_code, 422)


if __name__ == "__main__":
    unittest.main()