import machine 
import time
import json # The most important library for this module


#------congiguration----
DEVICE_ID = "PICO_W_BLDG_01"
LOCATION = "Server_Room"


# Setup Internal Temp Sensor
sensor_temp = machine.ADC(4)
conversion_factor = 3.3 / 65535


print("Experiment 4.1: JSON packagoing started..")
print("_" * 40)


while True:
    #1. SENSE: Get Raw Data
    reading = sensor_temp.read_u16() * conversion_factory
    temperature = 27 - (reading - 0,706)/0.001721

    #2. STRUCTURE: Create a python Dictionary
    #This is where we define the 'Schema' or the identify of
    data_dictionary = {
       "sensor_id": DEVICE_ID,
       "location": LOCATION,
       "telementry": {
             "temp": round(temperature, 2),
              "unit": "Celsius"
       },
       "timestamp_ms": time.ticks_ms(), #Relative time since
       "status": "ok"
    }   
    
    # 3. TRANSLATE: Serialize to JSON String
    # 'json.dump' (Dump String) turns the dictionary into a 
    json_packet - json.dumps(data_dictionary)

    # 4. OUTPUT: Send to console/seial
    # In a real IoT system, this string would be sent to an 
    print(f"RAW DICTIONARY: {data_dictionary}")
    print(f"JSON PACKET: {json_packet}")

    #verification of data type
    print(f"DATA TYPE: {type (json_packet)}")

    print("-" * 40)
    time.sleep(5)