package task

import (
	"fmt"

	"git.huangwc.com/pig/pig-farm-controller/internal/domain/device"
	"git.huangwc.com/pig/pig-farm-controller/internal/domain/plan"
	"git.huangwc.com/pig/pig-farm-controller/internal/infra/logs"
	"git.huangwc.com/pig/pig-farm-controller/internal/infra/models"
	"git.huangwc.com/pig/pig-farm-controller/internal/infra/repository"
)

type taskFactory struct {
	logger         *logs.Logger
	sensorDataRepo repository.SensorDataRepository
	deviceRepo     repository.DeviceRepository
	deviceService  device.Service
}

func NewTaskFactory(
	logger *logs.Logger,
	sensorDataRepo repository.SensorDataRepository,
	deviceRepo repository.DeviceRepository,
	deviceService device.Service,
) plan.TaskFactory {
	return &taskFactory{
		logger:         logger,
		sensorDataRepo: sensorDataRepo,
		deviceRepo:     deviceRepo,
		deviceService:  deviceService,
	}
}

func (t *taskFactory) Production(claimedLog *models.TaskExecutionLog) plan.Task {
	switch claimedLog.Task.Type {
	case models.TaskTypeWaiting:
		return NewDelayTask(t.logger, claimedLog)
	case models.TaskTypeReleaseFeedWeight:
		return NewReleaseFeedWeightTask(claimedLog, t.sensorDataRepo, t.deviceRepo, t.deviceService, t.logger)
	case models.TaskTypeFullCollection:
		return NewFullCollectionTask(claimedLog, t.deviceRepo, t.deviceService, t.logger)
	default:
		// TODO 这里直接panic合适吗? 不过这个场景确实不该出现任何异常的任务类型
		t.logger.Panicf("不支持的任务类型: %s", claimedLog.Task.Type)
		panic("不支持的任务类型") // 显式panic防编译器报错
	}
}

// CreateTaskFromModel 实现了 TaskFactory 接口，用于从模型创建任务实例。
func (t *taskFactory) CreateTaskFromModel(taskModel *models.Task) (plan.TaskDeviceIDResolver, error) {
	// 这个方法不关心 claimedLog 的其他字段，所以可以构造一个临时的
	// 它只用于访问那些不依赖于执行日志的方法，比如 ResolveDeviceIDs
	tempLog := &models.TaskExecutionLog{Task: *taskModel}

	switch taskModel.Type {
	case models.TaskTypeWaiting:
		return NewDelayTask(t.logger, tempLog), nil
	case models.TaskTypeReleaseFeedWeight:
		return NewReleaseFeedWeightTask(
			tempLog,
			t.sensorDataRepo,
			t.deviceRepo,
			t.deviceService,
			t.logger,
		), nil
	case models.TaskTypeFullCollection:
		return NewFullCollectionTask(tempLog, t.deviceRepo, t.deviceService, t.logger), nil
	default:
		return nil, fmt.Errorf("不支持为类型 '%s' 的任务创建模型实例", taskModel.Type)
	}
}