#include <stdio.h>
#include <stdlib.h>
#include "ShimLib.h"
typedef  void(*error_cb)(const char * msg);

int statusCountFlag = 0;
error_cb innerCallback = NULL;


int InitLib(error_cb cb ){
    innerCallback = cb;
    innerCallback("e 11111");
    return 0;
}

int ScanControl(ScanAction actionType){
    switch (actionType) {
        case SCAN:
            printf("Do Scan!\r\n");
            statusCountFlag = 2;
            break;
        case PREVIEW_SCAN:
            statusCountFlag = 1;
            printf("Do preview!\r\n");
            break;
        case STOP:
            statusCountFlag = 0;
            printf("Stop everything!\r\n");
            break;
    }
    return 0;
}

StatusInfo GetStatus(){
    StatusInfo inf;
    switch(statusCountFlag)
    {
        case 0:
            inf.status = READY;
            break;
        case 1:
            inf.status = SCANNING;
            inf.progress = 0.0f;
            break;
        case 2:
            inf.status = SCANNING;
            inf.progress = 0.3f;
            statusCountFlag++;
            break;
        case 3:
            inf.status = SCANNING;
            inf.progress = 0.6f;
            statusCountFlag++;
            break;
        case 4:
            inf.status = SCANNING;
            inf.progress = 0.9f;
            statusCountFlag++;
            break;
        case 5:
            inf.status = SCANNING;
            inf.progress = 1.0f;
            statusCountFlag=0;
            break;
        case 6:
//        case 7:
//            inf.status = BUSY;
//            statusCountFlag++;
//            break;
//        case 8:
            inf.status = BUSY;
            statusCountFlag=0;
            break;
        default:
            inf.status = BUSY;
            statusCountFlag=0;
    }
    return inf;
}

//result, 0 success, other false
int SetScanInfo(const char * jsonString, int empty){
    return 0;
}

int preivew_change_flag = 0;

const size_t Row = 140;
const size_t Col = 140;

#define BUFFER_SIZE Row * Col

const char * FRAME_FILE_PATH_1 = "./img1_v2.bin";
const char * FRAME_FILE_PATH_2 = "./pre_image.bin";
const char * GetPreviewData(){
    FILE *file;
    preivew_change_flag++;
    preivew_change_flag = preivew_change_flag%2;
//    _sleep(2000);
    if(file = fopen(preivew_change_flag?FRAME_FILE_PATH_1:FRAME_FILE_PATH_2,"rb")){
        unsigned char * buffer = malloc(sizeof(unsigned char)*BUFFER_SIZE);
        fread(buffer, sizeof(unsigned char),BUFFER_SIZE, file);
        fclose(file);
        return buffer;
    }

    return NULL;
}

const char * GetDeviceInfo(DeviceInfo infoType){
    switch (infoType) {
        case  MEAN_TEMPERATURE:
            return "28";
    }
    return "";
}