"""Tests for Claude Agent integration.

This test file implements TDD for Claude Agent integration with gmaillm.
Tests verify that:
1. Agent can analyze emails and provide insights
2. Agent can synthesize answers from email history
3. Agent can suggest workflow actions
4. Agent integrates with Gmail operations
"""

from unittest.mock import Mock, patch, AsyncMock
import pytest
from typing import List, Dict

# Import what we'll be testing (will create agent.py)
# from gmaillm.agent import ClaudeEmailAgent


class TestClaudeEmailAgentBasics:
    """Test basic Claude Email Agent functionality."""

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_initialization(self):
        """RED: Agent should initialize with Claude SDK options."""
        # from gmaillm.agent import ClaudeEmailAgent
        # agent = ClaudeEmailAgent(model="sonnet")
        # assert agent is not None
        # assert agent.model == "sonnet"
        pass

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_analyzes_email_content(self):
        """RED: Agent should analyze email content and extract key information."""
        # agent = ClaudeEmailAgent()
        # email_content = {
        #     "from": "boss@company.com",
        #     "subject": "Project Update",
        #     "body": "We need to finish the project by Friday."
        # }
        # analysis = agent.analyze_email(email_content)
        # assert "deadline" in analysis.lower() or "friday" in analysis.lower()
        pass

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_generates_summaries(self):
        """RED: Agent should summarize email threads."""
        # agent = ClaudeEmailAgent()
        # emails = [
        #     {"from": "alice@example.com", "subject": "Meeting", "body": "Let's meet tomorrow"},
        #     {"from": "bob@example.com", "subject": "Re: Meeting", "body": "I can do 2pm"}
        # ]
        # summary = agent.summarize_thread(emails)
        # assert len(summary) > 0
        # assert "meeting" in summary.lower()
        pass


class TestClaudeEmailAgentQueries:
    """Test natural language email queries via agent."""

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_answers_simple_questions(self):
        """RED: Agent should answer questions about email content."""
        # agent = ClaudeEmailAgent()
        # # Mock email history
        # emails = [
        #     {"from": "alice@example.com", "subject": "Status Update", "body": "Project is 50% done"},
        # ]
        # question = "What did Alice say about the project?"
        # answer = agent.query(question, emails)
        # assert "50%" in answer or "done" in answer.lower()
        pass

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_handles_complex_questions(self):
        """RED: Agent should handle multi-email synthesis."""
        # agent = ClaudeEmailAgent()
        # emails = [
        #     {"from": "alice@example.com", "body": "Task A is done"},
        #     {"from": "bob@example.com", "body": "Task B needs review"},
        #     {"from": "charlie@example.com", "body": "Task C is blocked"}
        # ]
        # question = "What's the status of all tasks?"
        # answer = agent.query(question, emails)
        # assert "done" in answer.lower()
        # assert "review" in answer.lower() or "blocked" in answer.lower()
        pass


class TestClaudeEmailAgentWorkflows:
    """Test workflow automation suggestions from agent."""

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_suggests_workflow_actions(self):
        """RED: Agent should suggest actions for workflow automation."""
        # agent = ClaudeEmailAgent()
        # emails = [
        #     {"from": "newsletter@example.com", "subject": "Weekly Update", "body": "..."},
        #     {"from": "notification@example.com", "subject": "System Alert", "body": "..."}
        # ]
        # suggestions = agent.suggest_workflow_actions(emails)
        # # Should suggest archiving newsletters, flagging alerts, etc.
        # assert len(suggestions) > 0
        pass

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_generates_reply_drafts(self):
        """RED: Agent should draft replies to emails."""
        # agent = ClaudeEmailAgent()
        # email = {
        #     "from": "client@company.com",
        #     "subject": "Question about project",
        #     "body": "Can you send me an update?"
        # }
        # draft = agent.draft_reply(email, style="professional-friendly")
        # assert len(draft) > 0
        # assert "@" not in draft  # Should not include email addresses in body
        pass


class TestClaudeEmailAgentIntegration:
    """Test integration with Gmail operations."""

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_integrates_with_gmail_client(self):
        """RED: Agent should use GmailClient to fetch emails."""
        # from gmaillm.agent import ClaudeEmailAgent
        # from gmaillm import GmailClient
        #
        # mock_client = Mock(spec=GmailClient)
        # mock_client.search_emails.return_value = Mock(emails=[])
        #
        # agent = ClaudeEmailAgent(client=mock_client)
        # result = agent.search_and_analyze("from:alice")
        #
        # mock_client.search_emails.assert_called()
        pass

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_respects_email_privacy(self):
        """RED: Agent should not log or store sensitive email content."""
        # agent = ClaudeEmailAgent(store_content=False)
        # sensitive_email = {
        #     "from": "hr@company.com",
        #     "subject": "Salary Information",
        #     "body": "Your salary is $X"
        # }
        # analysis = agent.analyze_email(sensitive_email)
        # # Content should not be stored/logged
        # assert not hasattr(agent, '_stored_emails')
        pass


class TestClaudeEmailAgentErrorHandling:
    """Test error handling and edge cases."""

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_handles_empty_email_list(self):
        """RED: Agent should gracefully handle empty email lists."""
        # agent = ClaudeEmailAgent()
        # result = agent.summarize_thread([])
        # assert result is not None
        # assert "no" in result.lower() or "empty" in result.lower()
        pass

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_handles_malformed_emails(self):
        """RED: Agent should handle emails with missing fields."""
        # agent = ClaudeEmailAgent()
        # malformed_email = {"from": "user@example.com"}  # Missing subject and body
        # result = agent.analyze_email(malformed_email)
        # assert result is not None  # Should not crash
        pass

    @pytest.mark.skip(reason="Agent not yet implemented - RED phase")
    def test_agent_handles_api_failures(self):
        """RED: Agent should handle Claude API failures gracefully."""
        # agent = ClaudeEmailAgent()
        # # Simulate API failure
        # with patch('gmaillm.agent.ClaudeSDKClient') as mock_client:
        #     mock_client.side_effect = Exception("API error")
        #     result = agent.query("test", [])
        #     # Should return error message, not crash
        #     assert "error" in result.lower() or "failed" in result.lower()
        pass


# Placeholder test to verify file structure
def test_placeholder():
    """Placeholder test to verify test file structure."""
    assert True
