"""
BI前端API模块
为前端提供BI相关的API接口，简化前端调用
"""
from fastapi import APIRouter, HTTPException, Query
from typing import List, Optional, Dict, Any
import json

# 创建BI路由器
router = APIRouter(prefix="/bi-api", tags=["BI API"])

@router.get("/dashboards/overview")
async def get_overview_dashboards():
    """获取概览看板数据"""
    return {
        "dashboards": [
            {
                "id": "operation_overview",
                "name": "水务运营总览",
                "description": "水务系统整体运营情况综合看板",
                "charts_count": 4,
                "is_public": True,
                "tags": ["运营", "总览", "综合"]
            },
            {
                "id": "device_management",
                "name": "设备管理看板",
                "description": "设备状态监控和维护管理",
                "charts_count": 1,
                "is_public": False,
                "tags": ["设备", "管理", "监控"]
            },
            {
                "id": "security_monitoring",
                "name": "安全监控看板",
                "description": "系统安全和警报监控",
                "charts_count": 1,
                "is_public": False,
                "tags": ["安全", "监控", "警报"]
            }
        ]
    }

@router.get("/charts/{chart_id}/data")
async def get_chart_data_frontend(chart_id: str):
    """获取图表数据（前端友好格式）"""
    # 这里调用BI服务获取数据，简化前端调用
    try:
        from ..bi.services import BIService
        bi_service = BIService()
        data = bi_service.get_chart_data_api(chart_id)
        
        if "error" in data:
            raise HTTPException(status_code=404, detail=data["error"])
        
        # 格式化为前端友好的数据格式
        formatted_data = {
            "chartId": chart_id,
            "chartName": data.get("chart_name", ""),
            "chartType": data.get("chart_type", ""),
            "data": data.get("data", []),
            "options": data.get("options", {}),
            "columns": data.get("columns", [])
        }
        
        return formatted_data
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

@router.get("/dashboards/{dashboard_id}/data")
async def get_dashboard_data_frontend(dashboard_id: str):
    """获取看板数据（前端友好格式）"""
    try:
        from ..bi.services import BIService
        bi_service = BIService()
        data = bi_service.get_dashboard_data_api(dashboard_id)
        
        if "error" in data:
            raise HTTPException(status_code=404, detail=data["error"])
        
        return data
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

@router.get("/charts/types")
async def get_chart_types():
    """获取支持的图表类型"""
    return {
        "line": {"name": "折线图", "description": "适合展示趋势数据"},
        "bar": {"name": "柱状图", "description": "适合展示分类数据"},
        "pie": {"name": "饼图", "description": "适合展示比例数据"},
        "scatter": {"name": "散点图", "description": "适合展示关系数据"},
        "area": {"name": "面积图", "description": "适合展示累计数据"},
        "gauge": {"name": "仪表盘", "description": "适合展示进度或状态"},
        "table": {"name": "表格", "description": "适合展示详细数据"},
        "heatmap": {"name": "热力图", "description": "适合展示密度数据"}
    }

@router.get("/data-sources/types")
async def get_data_source_types():
    """获取支持的数据源类型"""
    return {
        "sensor_data": {"name": "传感器数据", "description": "IoT传感器实时和历史数据"},
        "device_data": {"name": "设备数据", "description": "设备状态和配置信息"},
        "alert_data": {"name": "警报数据", "description": "系统警报和通知记录"},
        "system_stats": {"name": "系统统计", "description": "系统运行性能统计"},
        "batch_data": {"name": "批量数据", "description": "批量导入的数据"}
    }

@router.get("/search")
async def search_bi_objects(keyword: str = Query(..., description="搜索关键词")):
    """搜索BI对象（图表和看板）"""
    try:
        from ..bi.services import BIService
        bi_service = BIService()
        
        # 搜索图表
        charts = bi_service.search_charts(keyword)
        charts_data = [chart.to_dict() for chart in charts]
        
        # 搜索看板
        dashboards = bi_service.search_dashboards(keyword)
        dashboards_data = [dashboard.to_dict() for dashboard in dashboards]
        
        return {
            "charts": charts_data,
            "dashboards": dashboards_data,
            "total": len(charts_data) + len(dashboards_data)
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

@router.get("/popular-tags")
async def get_popular_tags():
    """获取热门标签"""
    try:
        from ..bi.services import BIService
        bi_service = BIService()
        
        # 收集所有标签
        all_tags = set()
        for chart in bi_service.get_all_charts():
            all_tags.update(chart.tags)
        for dashboard in bi_service.get_all_dashboards():
            all_tags.update(dashboard.tags)
        
        # 返回热门标签（按字母排序）
        return {"tags": sorted(list(all_tags))}
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

@router.get("/quick-stats")
async def get_quick_stats():
    """获取快速统计信息"""
    try:
        from ..bi.services import BIService
        bi_service = BIService()
        
        charts = bi_service.get_all_charts()
        dashboards = bi_service.get_all_dashboards()
        public_dashboards = bi_service.get_public_dashboards()
        
        # 统计图表类型分布
        chart_type_stats = {}
        for chart in charts:
            chart_type = chart.chart_type.value
            chart_type_stats[chart_type] = chart_type_stats.get(chart_type, 0) + 1
        
        # 统计标签分布
        tag_stats = {}
        for chart in charts:
            for tag in chart.tags:
                tag_stats[tag] = tag_stats.get(tag, 0) + 1
        for dashboard in dashboards:
            for tag in dashboard.tags:
                tag_stats[tag] = tag_stats.get(tag, 0) + 1
        
        return {
            "total_charts": len(charts),
            "total_dashboards": len(dashboards),
            "public_dashboards": len(public_dashboards),
            "chart_types": chart_type_stats,
            "popular_tags": dict(sorted(tag_stats.items(), key=lambda x: x[1], reverse=True)[:10])
        }
    except Exception as e:
        raise HTTPException(status_code=500, detail=str(e))

@router.get("/chart-suggestions")
async def get_chart_suggestions():
    """获取图表建议"""
    return {
        "suggestions": [
            {
                "id": "flow_analysis",
                "name": "流量分析建议",
                "description": "基于历史流量数据，分析流量趋势和异常",
                "charts": ["flow_trend", "flow_comparison"],
                "tags": ["流量", "分析", "趋势"]
            },
            {
                "id": "device_performance",
                "name": "设备性能分析",
                "description": "分析设备运行状态和性能指标",
                "charts": ["device_status_distribution", "device_uptime"],
                "tags": ["设备", "性能", "分析"]
            },
            {
                "id": "security_dashboard",
                "name": "安全监控看板",
                "description": "集中监控系统安全和警报信息",
                "charts": ["alert_level_stats", "alert_trend"],
                "tags": ["安全", "监控", "警报"]
            }
        ]
    }