import time
from datetime import datetime
import picamera2 as pc
import smbus2
import os
import json
import shutil
import requests


class MicroControler:
    def __init__(self):
        pass
        
    def set_data(self, t):
        bus = smbus2.SMBus(1)
        ans = bus.write_byte(0x28, t)
        #print(ans)
        time.sleep(0.015)
        ans=smbus2.i2c_msg.read(0x28,3)
        print("I get that : ",ans)
    
        bus.i2c_rdwr(ans)
        data = list(ans)
        print(data)
        
    def set_data_2_octets(self, value):
        value_16b = format(value, "016b")
        print(value_16b)
        #print(value_16b>>8)
        
        high_address = (value>>8) & 0xFF
        low_address = value & 0xFF
        print(high_address)
        print(low_address)
        
        """High Address"""
        self.set_data(high_address)
        """Low Address"""
        self.set_data(low_address)
      
    
    
class Server:
    def __init__(self):
        self.url_requete = "https://timelapse.kerboul.me/api/camera/status"
        self.dic = { "set_config":False,
                     "maintenance": False,
                     "stop current config":False,
                     
                     "timelapse":3,
                     "conf nb_images":1,
                     "nb_images restantes":1
                    }
    
    def get_request(self):
        try:
            response = requests.get(self.url_requete)
            print("Here is the answer from the server : ",response.json())
            if response.status_code == 200:
                camera_status = response.json()
                #print(camera_status)
                self.dic["maintenance"] = camera_status["maintenance"]
                self.dic["timelapse"] = camera_status["interval"]
                self.dic["conf nb_images"] = camera_status["nb_images"]
                self.dic["set_config"] = not camera_status["idle"]
                self.dic["stop current config"] = camera_status["stop_flag"]
            else:
                print("mauvais code")
                print(response.status_code)
        except requests.exceptions.RequestException as e:
            print("erreur API ou internet")
            
    def get_dic_data(self):
        return self.dic
    
    def create_Json(self):
        self.filename = "/home/timelapse/Documents/Time_Lapse/CONFIG/config.json"
        with open(self.filename, "w") as file:
            json.dump(self.get_dic_data(), file)
            
    def get_existing_Json(self):
        self.filename = "/home/timelapse/Documents/Time_Lapse/CONFIG/config.json"
        with open(self.filename, "r", encoding='utf-8') as file:
            datas = json.load(file)
        return datas
    
    def create_this_Json(self, dic):
        self.dic = { "set_config":dic["set_config"],
             "maintenance": dic["maintenance"],
             "stop current config":dic["stop current config"],
             
             "timelapse":dic["timelapse"],
             "conf nb_images":dic["conf nb_images"],
             "nb_images restantes":dic["nb_images restantes"]
            }
        self.filename = "/home/timelapse/Documents/Time_Lapse/CONFIG/config.json"
        with open(self.filename, "w") as file:
            json.dump(dic, file)
    
    def has_pending_tasks(self):
        """Vérifie s'il y a des captures en attente de synchronisation."""
        project_path = "//home//timelapse//Documents//Time_Lapse//PROJECT//"
        offline_dir = os.path.join(project_path, "_offline")
        
        # Si le répertoire offline existe et n'est pas vide, il y a des tâches en attente
        if os.path.exists(offline_dir) and os.listdir(offline_dir):
            return True
            
        # Vérifier également les fichiers dans PROJECT qui pourraient être en attente d'envoi
        if os.path.exists(project_path):
            for item in os.listdir(project_path):
                # Si c'est un dossier mais pas le dossier _offline
                if os.path.isdir(os.path.join(project_path, item)) and item != "_offline":
                    return True
                    
        return False
    
if __name__ == "__main__":
    MC = MicroControler()
    server = Server()
    filename = "/home/timelapse/Documents/Time_Lapse/CONFIG/config.json"
    
    server.get_request()
    datas = server.get_dic_data()
    #datas = {'set_config': False, 'maintenance': True, 'stop current config': True, 'timelapse': 7, 'conf nb_images': 12, 'nb_images restantes': 12}
    print("Here are the datas loaded : ",datas)
    if (datas["maintenance"]):
        print("- Maintenance")
    else:
        print("- No Maintenance")
        if (datas["stop current config"]):
            if (os.path.exists(filename)):
                print("- Stopping current config") #suppresion fichier json
                os.remove(filename)
        if (datas["set_config"]==False): #eddition fichier config
            print("- Working on Raspberry config")
            if (os.path.exists(filename)):
                print("- Existing Config : -1 on Images")
                datas = server.get_existing_Json()
                datas["nb_images restantes"] = datas["nb_images restantes"] - 1
                os.remove(filename)
                if (datas["nb_images restantes"]==0):
                    pass
                else:
                    server.create_this_Json(datas)
            else:
                datas = {'set_config': False, 'maintenance': False, 'stop current config': False, 'timelapse': 3, 'conf nb_images': 1, 'nb_images restantes': 1}
                server.create_this_Json(datas)
        else:
            server.create_this_Json(datas)
            print("- New Config")
            
        # Vérifier s'il y a des tâches en attente avant d'éteindre
        print("- Vérification si des transferts d'images sont en cours...")
        
        # Envoyer l'intervalle au microcontrôleur
        print("TimeLapse sent is : ", datas["timelapse"])
        MC.set_data_2_octets(datas["timelapse"])
        
        # Attendre un moment pour s'assurer que les transferts se terminent
        max_wait = 60  # Maximum 60 secondes d'attente
        wait_interval = 5  # Vérifier toutes les 5 secondes
        
        for i in range(0, max_wait, wait_interval):
            if server.has_pending_tasks():
                print(f"- Des images sont encore en cours de transfert, attente ({i}s)...")
                time.sleep(wait_interval)
            else:
                print("- Aucun transfert en cours, extinction du système")
                break
                
        print("- Extinction du système")
        time.sleep(1)
        os.system("sudo shutdown now")