"""Unit tests for CrmAgent — plan, gather, reason, report, peer_bus, sweep."""
import pytest
from unittest.mock import AsyncMock, MagicMock
from agent_service.agents.crm_agent import CrmAgent, CRM_TOOLS
from agent_service.agents.base_agent import AgentDirective, AgentReport, SweepReport


def _directive(intent='', context=None):
    return AgentDirective(
        directive_id='crm-d1', user_id='1', intent=intent,
        context=context or {}, agent_name='crm_agent',
    )


def _make_agent():
    agent = CrmAgent(odoo=MagicMock(), llm=MagicMock())
    agent._ct = MagicMock()
    agent._ct.get_pipeline_summary = AsyncMock(return_value={
        'total_opportunities': 10, 'weighted_pipeline': 50000.0,
    })
    agent._ct.get_leads = AsyncMock(return_value=[])
    agent._ct.get_opportunities = AsyncMock(return_value=[])
    agent._ct.get_won_lost_analysis = AsyncMock(return_value={'won_count': 5, 'lost_count': 2})
    agent._ct.update_lead_stage = AsyncMock(return_value=True)
    agent._ct.assign_lead = AsyncMock(return_value=True)
    agent._ct.log_activity = AsyncMock(return_value=True)
    agent._ct.post_chatter_note = AsyncMock(return_value=True)
    return agent


# ── Meta ────────────────────────────────────────────────────────────────────

def test_tool_count():
    assert len(CRM_TOOLS) <= 8

def test_agent_name():
    assert CrmAgent.name == 'crm_agent'


# ── _plan ───────────────────────────────────────────────────────────────────

@pytest.mark.asyncio
async def test_plan_pipeline_intent():
    agent = _make_agent()
    plan = await agent._plan(_directive(intent='show pipeline summary'))
    assert plan['fetch_pipeline'] is True

@pytest.mark.asyncio
async def test_plan_leads_intent():
    agent = _make_agent()
    plan = await agent._plan(_directive(intent='list my leads'))
    assert plan['fetch_leads'] is True

@pytest.mark.asyncio
async def test_plan_opportunities_intent():
    agent = _make_agent()
    plan = await agent._plan(_directive(intent='show opportunities'))
    assert plan['fetch_opportunities'] is True

@pytest.mark.asyncio
async def test_plan_won_lost_intent():
    agent = _make_agent()
    plan = await agent._plan(_directive(intent='show won and lost analysis'))
    assert plan['fetch_won_lost'] is True

@pytest.mark.asyncio
async def test_plan_propagates_user_id():
    agent = _make_agent()
    plan = await agent._plan(_directive(context={'user_id': 7}))
    assert plan['user_id'] == 7


# ── _gather ─────────────────────────────────────────────────────────────────

@pytest.mark.asyncio
async def test_gather_pipeline_fetched_by_default():
    agent = _make_agent()
    ctx = {'plan': {'fetch_pipeline': True, 'fetch_leads': False,
                    'fetch_opportunities': False, 'fetch_won_lost': False, 'user_id': None}}
    data = await agent._gather(ctx)
    assert 'pipeline' in data
    agent._ct.get_pipeline_summary.assert_awaited_once()

@pytest.mark.asyncio
async def test_gather_leads_when_requested():
    agent = _make_agent()
    agent._ct.get_leads = AsyncMock(return_value=[{'id': 1, 'name': 'Lead A'}])
    ctx = {'plan': {'fetch_pipeline': False, 'fetch_leads': True,
                    'fetch_opportunities': False, 'fetch_won_lost': False, 'user_id': None}}
    data = await agent._gather(ctx)
    assert 'leads' in data

@pytest.mark.asyncio
async def test_gather_won_lost_when_requested():
    agent = _make_agent()
    ctx = {'plan': {'fetch_pipeline': False, 'fetch_leads': False,
                    'fetch_opportunities': False, 'fetch_won_lost': True, 'user_id': None}}
    data = await agent._gather(ctx)
    assert 'won_lost' in data


# ── _reason ─────────────────────────────────────────────────────────────────

@pytest.mark.asyncio
async def test_reason_low_pipeline_escalates():
    agent = _make_agent()
    agent._gathered_data = {'pipeline': {'weighted_pipeline': 500.0, 'total_opportunities': 2}}
    analysis = await agent._reason({})
    assert len(analysis['escalations']) == 1
    assert 'Low weighted pipeline' in analysis['escalations'][0]

@pytest.mark.asyncio
async def test_reason_healthy_pipeline_no_escalation():
    agent = _make_agent()
    agent._gathered_data = {'pipeline': {'weighted_pipeline': 100000.0, 'total_opportunities': 20}}
    analysis = await agent._reason({})
    assert analysis['escalations'] == []


# ── _report ─────────────────────────────────────────────────────────────────

@pytest.mark.asyncio
async def test_report_includes_pipeline_stats():
    agent = _make_agent()
    agent._gathered_data = {
        'pipeline': {'total_opportunities': 15, 'weighted_pipeline': 75000.0}
    }
    agent._escalations_list = []
    report = await agent._report({})
    assert isinstance(report, AgentReport)
    assert '15' in report.summary

@pytest.mark.asyncio
async def test_report_includes_won_lost():
    agent = _make_agent()
    agent._gathered_data = {'won_lost': {'won_count': 8, 'lost_count': 3}}
    agent._escalations_list = []
    report = await agent._report({})
    assert '8' in report.summary
    assert '3' in report.summary

@pytest.mark.asyncio
async def test_report_fallback_message():
    agent = _make_agent()
    agent._gathered_data = {}
    agent._escalations_list = []
    report = await agent._report({})
    assert 'crm' in report.summary.lower() or 'complete' in report.summary.lower()


# ── _dispatch_tool ───────────────────────────────────────────────────────────

@pytest.mark.asyncio
async def test_dispatch_get_pipeline_summary():
    agent = _make_agent()
    await agent._dispatch_tool('get_pipeline_summary', {})
    agent._ct.get_pipeline_summary.assert_awaited_once()

@pytest.mark.asyncio
async def test_dispatch_update_lead_stage():
    agent = _make_agent()
    await agent._dispatch_tool('update_lead_stage', {'lead_id': 1, 'stage_id': 3})
    agent._ct.update_lead_stage.assert_awaited_once_with(lead_id=1, stage_id=3)

@pytest.mark.asyncio
async def test_dispatch_unknown_tool_raises():
    agent = _make_agent()
    with pytest.raises(ValueError, match='Unknown tool'):
        await agent._dispatch_tool('nonexistent', {})


# ── handle_peer_request ──────────────────────────────────────────────────────

@pytest.mark.asyncio
async def test_peer_pipeline_summary():
    agent = _make_agent()
    result = await agent.handle_peer_request('pipeline_summary', {}, 'dir-1')
    assert 'total_opportunities' in result or 'weighted_pipeline' in result

@pytest.mark.asyncio
async def test_peer_opportunities():
    agent = _make_agent()
    agent._ct.get_opportunities = AsyncMock(return_value=[{'id': 1}])
    result = await agent.handle_peer_request('opportunities', {'user_id': 5}, 'dir-1')
    assert 'opportunities' in result

@pytest.mark.asyncio
async def test_peer_unknown_returns_error():
    agent = _make_agent()
    result = await agent.handle_peer_request('bad_type', {}, 'dir-1')
    assert 'error' in result


# ── sweep ────────────────────────────────────────────────────────────────────

@pytest.mark.asyncio
async def test_sweep_low_pipeline_generates_finding():
    agent = _make_agent()
    agent._ct.get_pipeline_summary = AsyncMock(return_value={'weighted_pipeline': 100.0})
    result = await agent.sweep()
    assert isinstance(result, SweepReport)
    assert len(result.findings) == 1
    assert result.findings[0]['type'] == 'low_pipeline'

@pytest.mark.asyncio
async def test_sweep_healthy_pipeline_no_findings():
    agent = _make_agent()
    agent._ct.get_pipeline_summary = AsyncMock(return_value={'weighted_pipeline': 99999.0})
    result = await agent.sweep()
    assert result.findings == []

@pytest.mark.asyncio
async def test_sweep_handles_exception():
    agent = _make_agent()
    agent._ct.get_pipeline_summary = AsyncMock(side_effect=Exception('network error'))
    result = await agent.sweep()
    assert isinstance(result, SweepReport)
    assert result.error is not None