package service

import (
	"apsClient/conf"
	"apsClient/constvar"
	"apsClient/model"
	"fmt"
	"github.com/jinzhu/gorm"
	"github.com/spf13/cast"
	"sync"
	"time"
)

type CacheStore struct {
	cache map[string]interface{}
	mu    sync.Mutex
}

var defaultCacheStore *CacheStore

func init() {
	defaultCacheStore = newCacheManager()
}
func newCacheManager() *CacheStore {
	return &CacheStore{
		cache: make(map[string]interface{}),
	}
}

func (cm *CacheStore) Get(key string) (interface{}, bool) {
	cm.mu.Lock()
	defer cm.mu.Unlock()

	conn, ok := cm.cache[key]
	return conn, ok
}

func (cm *CacheStore) Add(key string, value interface{}) {
	cm.mu.Lock()
	defer cm.mu.Unlock()
	cm.cache[key] = value
}

func (cm *CacheStore) Remove(key string) {
	cm.mu.Lock()
	defer cm.mu.Unlock()
	delete(cm.cache, key)
}

const (
	PlcCacheKey             = "plc:%v:%v"                    //plc:channel:key
	CurrentTaskCacheKey     = "current_task:%v"              //current_task:channel
	CurrentProgressCacheKey = "current_progress:%v"          //current_progress:channel
	PlcCacheKeyUpdateTime   = "finish_number_update_time:%v" //finish_number_update_time:channel
)

func PlcCacheGet(channel int32, key string) (interface{}, bool) {
	return defaultCacheStore.Get(fmt.Sprintf(PlcCacheKey, channel, key))
}

func PlcCacheSet(channel int32, key string, value interface{}) {
	if key == constvar.PlcCacheKeyFinishNumber {
		oldFinishNumber, exists := PlcCacheGet(channel, key)
		if !exists || cast.ToInt(oldFinishNumber) != cast.ToInt(value) { //finishNumber有了变化，设置更新时间缓存
			FinishUpdateTimeSet(channel, time.Now().Unix())
		}
	}
	defaultCacheStore.Add(fmt.Sprintf(PlcCacheKey, channel, key), value)
}

func FinishUpdateTimeGet(channel int32) interface{} {
	val, ok := defaultCacheStore.Get(fmt.Sprintf(PlcCacheKeyUpdateTime, channel))
	if ok {
		return val
	}
	return 0
}

func FinishUpdateTimeSet(channel int32, value interface{}) {
	defaultCacheStore.Add(fmt.Sprintf(PlcCacheKeyUpdateTime, channel), value)
}

func TaskFlagSet(channel int32) {
	defaultCacheStore.Add(fmt.Sprintf(CurrentTaskCacheKey, channel), true)
}

func TaskFlagUnset(channel int32) {
	defaultCacheStore.Add(fmt.Sprintf(CurrentTaskCacheKey, channel), false)
}

func TaskFlagGet(channel int32) bool {
	if v, ok := defaultCacheStore.Get(fmt.Sprintf(CurrentTaskCacheKey, channel)); ok {
		return v.(bool)
	}
	_, err := model.NewProceduresSearch(nil).SetDeviceId(conf.Conf.System.DeviceId).SetStatus(model.ProcedureStatusProcessing).SetChannels([]int32{channel}).First()
	if err == gorm.ErrRecordNotFound {
		defaultCacheStore.Add(fmt.Sprintf(CurrentTaskCacheKey, channel), false)
		return false
	} else {
		defaultCacheStore.Add(fmt.Sprintf(CurrentTaskCacheKey, channel), true)
		return true
	}
}

func ProgressCacheGet(channel int32) (*model.ProductionProgress, bool) {
	if v, ok := defaultCacheStore.Get(fmt.Sprintf(CurrentProgressCacheKey, channel)); ok {
		return v.(*model.ProductionProgress), ok
	}
	return nil, false
}

func ProgressCacheSet(channel int32, value *model.ProductionProgress) {
	defaultCacheStore.Add(fmt.Sprintf(CurrentProgressCacheKey, channel), value)
}

func ProgressCacheUnset(channel int32) {
	defaultCacheStore.Remove(fmt.Sprintf(CurrentProgressCacheKey, channel))
}