"""
路线图R1：AI建议→一键落地 测试
建议CRUD + 应用到KPI/预算/行动方案 + OperationLog留痕 + 已应用/未应用状态
"""
import pytest
from fastapi.testclient import TestClient
from sqlalchemy.orm import Session
from datetime import datetime

from tests.conftest import create_test_user, get_token_for_user, auth_header, create_test_kpi
from app.models import AISuggestion, KPIDefinition, BudgetPlan, ActionPlan, OperationLog, KPIValue


def _create_suggestion(client, token, kpi_id, **kw):
    body = {
        "suggestion_type": "kpi_target",
        "target_type": "kpi",
        "target_id": kpi_id,
        "title": "上调测试KPI目标",
        "content": "达成率超预期",
        "suggestion_data": {"kpi_id": kpi_id, "target_value": 150.0},
    }
    body.update(kw)
    return client.post("/api/cma/ai/suggestions", json=body, headers=auth_header(token))


class TestSuggestionCRUD:
    def test_create_and_list(self, client, db):
        create_test_user(db)
        token = get_token_for_user(client)
        kpi = create_test_kpi(db)

        r = _create_suggestion(client, token, kpi.id)
        assert r.status_code == 200, r.text
        data = r.json()["data"]
        assert data["status"] == "unapplied"
        assert data["suggestion_type"] == "kpi_target"

        # 列表含未应用
        lst = client.get("/api/cma/ai/suggestions", headers=auth_header(token)).json()
        assert lst["total"] == 1
        assert lst["data"][0]["id"] == data["id"]

        # 详情
        det = client.get(f"/api/cma/ai/suggestions/{data['id']}", headers=auth_header(token)).json()
        assert det["data"]["title"] == "上调测试KPI目标"

    def test_create_missing_fields(self, client, db):
        create_test_user(db)
        token = get_token_for_user(client)
        r = client.post("/api/cma/ai/suggestions", json={"title": "无类型"}, headers=auth_header(token))
        assert r.status_code == 400
        r2 = client.post("/api/cma/ai/suggestions", json={"suggestion_type": "kpi_target"}, headers=auth_header(token))
        assert r2.status_code == 400

    def test_apply_kpi_target(self, client, db):
        """应用建议→改KPI目标→操作日志可查"""
        create_test_user(db)
        token = get_token_for_user(client)
        kpi = create_test_kpi(db, target_value=100.0)

        r = _create_suggestion(client, token, kpi.id)
        sug_id = r.json()["data"]["id"]

        # 应用：改KPI目标为150
        app = client.post(
            f"/api/cma/ai/suggestions/{sug_id}/apply",
            json={"action": "kpi_target", "target_value": 150.0},
            headers=auth_header(token),
        )
        assert app.status_code == 200, app.text
        app_data = app.json()["data"]
        assert app_data["status"] == "applied"
        assert app_data["applied_by"] == "测试管理员"
        assert app_data["apply_detail"][0]["before"] == 100.0
        assert app_data["apply_detail"][0]["after"] == 150.0

        # KPI目标已变更
        db.refresh(kpi)
        assert kpi.target_value == 150.0

        # OperationLog留痕
        logs = db.query(OperationLog).filter(OperationLog.action == "ai_suggestion_apply").all()
        assert len(logs) == 1
        assert logs[0].target_type == "kpi"
        assert logs[0].target_id == kpi.id
        assert logs[0].detail["suggestion_id"] == sug_id
        assert logs[0].detail["before"] == 100.0
        assert logs[0].detail["after"] == 150.0

        # 重复应用被拒绝
        app2 = client.post(
            f"/api/cma/ai/suggestions/{sug_id}/apply",
            json={"action": "kpi_target", "target_value": 200.0},
            headers=auth_header(token),
        )
        assert app2.status_code == 400

    def test_apply_budget_adjust(self, client, db):
        """应用建议→调预算（新建/更新BudgetPlan）→操作日志"""
        create_test_user(db)
        token = get_token_for_user(client)
        kpi = create_test_kpi(db)

        r = _create_suggestion(client, token, kpi.id, suggestion_type="budget_adjust",
                               title="调整预算", suggestion_data={"kpi_id": kpi.id})
        sug_id = r.json()["data"]["id"]

        app = client.post(
            f"/api/cma/ai/suggestions/{sug_id}/apply",
            json={"action": "budget_adjust", "period": "2026-09", "budget_value": 8888.0},
            headers=auth_header(token),
        )
        assert app.status_code == 200, app.text
        plan = db.query(BudgetPlan).filter(BudgetPlan.kpi_id == kpi.id, BudgetPlan.period == "2026-09").first()
        assert plan is not None
        assert plan.budget_value == 8888.0
        assert plan.source_type == "ai_suggestion"

        # 同期间再应用→更新而非新增
        app2 = client.post(
            f"/api/cma/ai/suggestions/{sug_id}/apply",
            json={"action": "budget_adjust", "period": "2026-09", "budget_value": 9999.0},
            headers=auth_header(token),
        )
        # 已applied被拒；用新建议验证upsert
        r2 = _create_suggestion(client, token, kpi.id, suggestion_type="budget_adjust",
                                title="调整预算2", suggestion_data={"kpi_id": kpi.id})
        sug_id2 = r2.json()["data"]["id"]
        app3 = client.post(
            f"/api/cma/ai/suggestions/{sug_id2}/apply",
            json={"action": "budget_adjust", "period": "2026-09", "budget_value": 9999.0},
            headers=auth_header(token),
        )
        assert app3.status_code == 200
        plans = db.query(BudgetPlan).filter(BudgetPlan.kpi_id == kpi.id, BudgetPlan.period == "2026-09").all()
        assert len(plans) == 1
        assert plans[0].budget_value == 9999.0
        assert app3.json()["data"]["apply_detail"][0]["before"] == 8888.0

    def test_apply_action_plan(self, client, db):
        """应用建议→建行动方案→操作日志"""
        create_test_user(db)
        token = get_token_for_user(client)
        kpi = create_test_kpi(db)

        r = _create_suggestion(client, token, kpi.id, suggestion_type="action_plan",
                               title="建行动方案", suggestion_data={"kpi_id": kpi.id})
        sug_id = r.json()["data"]["id"]

        app = client.post(
            f"/api/cma/ai/suggestions/{sug_id}/apply",
            json={"action": "action_plan", "title": "营收提升专项", "assignee": "张三",
                  "priority": "high", "due_date": "2026-09-30"},
            headers=auth_header(token),
        )
        assert app.status_code == 200, app.text
        plan = db.query(ActionPlan).filter(ActionPlan.kpi_id == kpi.id, ActionPlan.title == "营收提升专项").first()
        assert plan is not None
        assert plan.assignee == "张三"
        assert plan.priority == "high"
        assert plan.created_by == "测试管理员"

        logs = db.query(OperationLog).filter(OperationLog.action == "ai_suggestion_apply",
                                             OperationLog.target_type == "action_plan").all()
        assert len(logs) == 1
        assert logs[0].target_id == plan.id

    def test_dismiss(self, client, db):
        create_test_user(db)
        token = get_token_for_user(client)
        kpi = create_test_kpi(db)
        r = _create_suggestion(client, token, kpi.id)
        sug_id = r.json()["data"]["id"]

        d = client.post(f"/api/cma/ai/suggestions/{sug_id}/dismiss", headers=auth_header(token))
        assert d.status_code == 200
        det = client.get(f"/api/cma/ai/suggestions/{sug_id}", headers=auth_header(token)).json()
        assert det["data"]["status"] == "dismissed"
        # 忽略后应用被拒
        app = client.post(f"/api/cma/ai/suggestions/{sug_id}/apply",
                          json={"action": "kpi_target", "target_value": 1}, headers=auth_header(token))
        assert app.status_code == 400

    def test_apply_not_found(self, client, db):
        create_test_user(db)
        token = get_token_for_user(client)
        app = client.post("/api/cma/ai/suggestions/9999/apply", json={}, headers=auth_header(token))
        assert app.status_code == 404


class TestRuleSuggestions:
    """dashboard-analysis 自动生成建议（规则驱动）"""

    def test_generate_low_ratio_action(self, client, db):
        """执行率<70% → 生成建行动方案建议"""
        create_test_user(db)
        token = get_token_for_user(client)
        kpi = create_test_kpi(db, target_value=100.0)
        db.add(KPIValue(kpi_id=kpi.id, period="2026-06", actual_value=50.0))
        db.commit()

        # 直接调规则生成
        resp = client.get("/api/cma/ai/dashboard-analysis", headers=auth_header(token))
        assert resp.status_code == 200
        s = db.query(AISuggestion).filter(AISuggestion.target_id == kpi.id).all()
        assert len(s) >= 1
        assert any(x.suggestion_type == "action_plan" for x in s)

        # 幂等：再调一次不重复建
        resp2 = client.get("/api/cma/ai/dashboard-analysis", headers=auth_header(token))
        s2 = db.query(AISuggestion).filter(AISuggestion.target_id == kpi.id).all()
        assert len(s2) == len(s)

    def test_generate_high_ratio_target(self, client, db):
        """执行率>110% → 生成上调目标建议"""
        create_test_user(db)
        token = get_token_for_user(client)
        kpi = create_test_kpi(db, target_value=100.0)
        db.add(KPIValue(kpi_id=kpi.id, period="2026-06", actual_value=150.0))
        db.commit()

        resp = client.get("/api/cma/ai/dashboard-analysis", headers=auth_header(token))
        assert resp.status_code == 200
        s = db.query(AISuggestion).filter(AISuggestion.target_id == kpi.id).all()
        assert any(x.suggestion_type == "kpi_target" for x in s)
        assert "suggestions" in resp.json()

    def test_generate_budget_overrun(self, client, db):
        """预算执行率>110% → 生成调预算建议"""
        create_test_user(db)
        token = get_token_for_user(client)
        kpi = create_test_kpi(db, target_value=100.0)
        db.add(KPIValue(kpi_id=kpi.id, period="2026-08", actual_value=200.0))
        db.add(BudgetPlan(entity_id=1, kpi_id=kpi.id, period="2026-08", budget_value=100.0,
                          budget_year=2026, budget_month=8, status="active"))
        db.commit()

        resp = client.get("/api/cma/ai/dashboard-analysis", headers=auth_header(token))
        assert resp.status_code == 200
        s = db.query(AISuggestion).filter(AISuggestion.suggestion_type == "budget_adjust").all()
        assert len(s) >= 1