package tool

import (
	"context"
	"fmt"
	"log/slog"

	"bj_power_mes/internal/robot"
)

// ScannerTool 扫码器，实现 HandheldTool 接口
// 通过 RobotManager 控制机器人执行扫码动作并读取扫码结果
type ScannerTool struct {
	robotMgr *robot.Manager // 机器人管理器，用于控制扫码动作
}

// NewScannerTool 创建扫码器工具
func NewScannerTool(robotMgr *robot.Manager) *ScannerTool {
	return &ScannerTool{robotMgr: robotMgr}
}

// ID 返回扫码器唯一标识
func (t *ScannerTool) ID() string { return "scanner-1" }

// Type 返回工具类型编码
func (t *ScannerTool) Type() string { return "SCANNER" }

// Name 返回工具显示名称
func (t *ScannerTool) Name() string { return "扫码器" }

// Execute 执行扫码操作：启动扫码→读取结果→清除数据
func (t *ScannerTool) Execute(ctx context.Context, cmd ToolCommand) error {
	wt := extractWorkpieceType(cmd.Params)
	round := 1
	if v, ok := cmd.Params["round"]; ok {
		if n, ok := v.(int); ok {
			round = n
		}
	}

	rc, exist := t.robotMgr.GetRobot()
	if !exist || rc == nil {
		return fmt.Errorf("robot controller not available")
	}

	slog.Info("scanner: start scan", "workpieceType", wt, "round", round)
	if err := rc.StartScanCode(ctx, wt, round); err != nil {
		return fmt.Errorf("start scan code: %w", err)
	}

	code, err := t.robotMgr.ReadScanCodeData(ctx)
	if err != nil {
		return fmt.Errorf("read scan code: %w", err)
	}

	if clearErr := t.robotMgr.ClearScanCodeData(ctx); clearErr != nil {
		slog.Warn("scanner: failed to clear scan data", "error", clearErr)
	}

	slog.Info("scanner: scan complete", "code", code)
	cmd.Params["scanCode"] = code
	return nil
}