package tools

import (
	"context"
	"fmt"
	"strings"
)

// IoTQueryTool IoT 设备查询工具
type IoTQueryTool struct {
	iotClient *IoTClient
}

// NewIoTQueryTool 创建 IoT 查询工具
func NewIoTQueryTool(iotClient *IoTClient) *IoTQueryTool {
	return &IoTQueryTool{iotClient: iotClient}
}

// Definition 返回工具定义
func (t *IoTQueryTool) Definition() ToolDefinition {
	return ToolDefinition{
		Name:        "iot_query",
		Description: "查询家中智能设备状态。注意：当前设备状态通常已自动注入到系统提示词中，你通常不需要调用此工具即可回答设备状态问题。只有在设备状态信息陈旧或明显不完整时才调用此工具刷新。",
		Parameters: map[string]interface{}{
			"type": "object",
			"properties": map[string]interface{}{
				"device_id": map[string]interface{}{
					"type":        "string",
					"description": "要查询的设备ID（可选，不填则返回所有设备）。可选值: light-livingroom, light-bedroom, ac-livingroom, ac-bedroom, curtain-livingroom, sensor-temperature, sensor-humidity, lock-door",
				},
			},
		},
	}
}

// Execute 执行查询
func (t *IoTQueryTool) Execute(ctx context.Context, arguments map[string]interface{}) (*ToolResult, error) {
	if t.iotClient == nil {
		return &ToolResult{
			ToolName: "iot_query",
			Success:  false,
			Error:    "IoT 客户端未初始化",
		}, nil
	}

	deviceID, _ := arguments["device_id"].(string)

	if deviceID != "" {
		// 查询单个设备
		device, err := t.iotClient.GetDevice(deviceID)
		if err != nil {
			return &ToolResult{
				ToolName: "iot_query",
				Success:  false,
				Error:    err.Error(),
			}, nil
		}
		return &ToolResult{
			ToolName: "iot_query",
			Success:  true,
			Data:     formatSingleDevice(device),
		}, nil
	}

	// 查询所有设备
	devices, err := t.iotClient.GetAllDevices()
	if err != nil {
		return &ToolResult{
			ToolName: "iot_query",
			Success:  false,
			Error:    err.Error(),
		}, nil
	}

	var result strings.Builder
	result.WriteString(fmt.Sprintf("当前共有 %d 台智能设备:\n\n", len(devices)))
	for _, d := range devices {
		result.WriteString(formatDeviceLine(d) + "\n")
	}
	return &ToolResult{
		ToolName: "iot_query",
		Success:  true,
		Data:     result.String(),
	}, nil
}

func formatSingleDevice(d *IoTDevice) string {
	return fmt.Sprintf("设备: %s (%s)\n状态: %s", d.Name, d.Type, formatDeviceLine(*d))
}

func formatDeviceLine(d IoTDevice) string {
	switch d.Type {
	case "light":
		if d.Status == "on" {
			return fmt.Sprintf("💡 %s: 开启 (亮度%d%%, %s)", d.Name, d.Brightness, d.Color)
		}
		return fmt.Sprintf("💡 %s: 关闭", d.Name)
	case "ac":
		if d.Status == "on" {
			mode := d.Mode
			switch mode {
			case "cool":
				mode = "制冷"
			case "heat":
				mode = "制热"
			case "auto":
				mode = "自动"
			}
			return fmt.Sprintf("❄️ %s: 运行中 (%s %.0f°C)", d.Name, mode, d.Temperature)
		}
		return fmt.Sprintf("❄️ %s: 关闭", d.Name)
	case "curtain":
		if d.Status == "open" {
			return fmt.Sprintf("🪟 %s: 已打开", d.Name)
		}
		return fmt.Sprintf("🪟 %s: 已关闭", d.Name)
	case "sensor":
		unit := d.Unit
		if unit == "celsius" {
			unit = "°C"
		} else if unit == "percent" {
			unit = "%"
		}
		return fmt.Sprintf("🌡️ %s: %.1f%s", d.Name, d.Value, unit)
	case "lock":
		status := "已锁定"
		if d.Status == "unlocked" {
			status = "已解锁"
		}
		return fmt.Sprintf("🔒 %s: %s (电量%d%%)", d.Name, status, d.Battery)
	default:
		return fmt.Sprintf("%s: %s", d.Name, d.Status)
	}
}