import time
import json
import random
#Coder Ravi 
# ==================================================
# DISPLAY PLACEHOLDER (Replace with TFT draw later)
# ==================================================
def clear():
    print("\n" * 6)

def show(text):
    print(text)

# ==================================================
# STORAGE
# ==================================================
FILE = "students.json"

def load_data():
    try:
        with open(FILE, "r") as f:
            return json.load(f)
    except:
        return {}

def save_data(data):
    with open(FILE, "w") as f:
        json.dump(data, f)

# ==================================================
# MOTIVATION QUOTES
# ==================================================
LOCAL_QUOTES = [
    "Focus builds the future.",
    "Small focus, big success.",
    "Discipline beats motivation.",
    "One task at a time."
]

def get_ai_quote():
    # Placeholder – fetched from laptop via Wi-Fi
    return "A curious mind with a purpose… -CoderRavi"

# ==================================================
# AUTHENTICATION
# ==================================================
def login():
    data = load_data()
    clear()
    show("SMART STUDY TABLE")
    show("------------------")
    student_id = input("Enter Student ID: ")

    if student_id not in data:
        data[student_id] = {
            "tasks": [],
            "notes": ""
        }
        save_data(data)
        show("New student profile created")

    show("Login successful")
    time.sleep(1)
    return student_id

# ==================================================
# TASK MANAGEMENT
# ==================================================
def tasks_menu(student_id):
    data = load_data()
    tasks = data[student_id]["tasks"]

    while True:
        clear()
        show("TASK LIST")
        show("---------")

        for i, task in enumerate(tasks):
            symbol = "✔" if task["done"] else "✖"
            show(f"{i+1}. {symbol} {task['text']}")

        show("------------------")
        show("1:Add Task")
        show("2:Toggle Complete")
        show("3:Back")

        ch = input("> ")

        if ch == "1":
            text = input("New Task: ")
            tasks.append({"text": text, "done": False})
            save_data(data)

        elif ch == "2":
            idx = int(input("Task number: ")) - 1
            if 0 <= idx < len(tasks):
                tasks[idx]["done"] = not tasks[idx]["done"]
                save_data(data)

        elif ch == "3":
            break

# ==================================================
# NOTES
# ==================================================
def notes_menu(student_id):
    data = load_data()
    clear()
    show("NOTES")
    show("-----")
    show(data[student_id]["notes"])
    show("------------------")
    ch = input("1:Edit  2:Back > ")

    if ch == "1":
        data[student_id]["notes"] = input("Write note: ")
        save_data(data)

# ==================================================
# STUDY TIMER (ADVANCED)
# ==================================================
def study_timer():
    clear()
    minutes = int(input("Set minutes: "))
    total = minutes * 60
    remaining = total
    running = True

    while remaining > 0:
        clear()
        mins = remaining // 60
        secs = remaining % 60
        show(f"TIMER: {mins:02d}:{secs:02d}")
        show("1:Pause  2:Reset  3:Exit")

        start = time.time()
        while time.time() - start < 1:
            pass

        if running:
            remaining -= 1

        if input("") == "1":
            running = False
            show("PAUSED")
            ch = input("1:Resume 2:Reset 3:Exit > ")
            if ch == "1":
                running = True
            elif ch == "2":
                remaining = total
                running = True
            elif ch == "3":
                return

        elif input("") == "2":
            remaining = total

        elif input("") == "3":
            return

    show("STUDY SESSION COMPLETE!")
    time.sleep(2)

# ==================================================
# STATUS SCREEN (POSTURE + FOCUS)
# ==================================================
def status_screen(posture_status, focus_status):
    clear()

    # POSTURE
    if posture_status == "BAD":
        show("POSTURE: BAD")
        show("😞  Sit Straight!")
    else:
        show("POSTURE: GOOD")
        show("😊  Good Job")

    show("------------------")

    # FOCUS
    if focus_status == "BAD":
        show("FOCUS: LOW")
        quote = random.choice(LOCAL_QUOTES)
        show("Motivation:")
        show(quote)
    else:
        show("FOCUS: GOOD")
        show("Keep Going!")

    time.sleep(3)

# ==================================================
# HOME MENU
# ==================================================
def home(student_id):
    while True:
        clear()
        show(f"STUDENT: {student_id}")
        show("------------------")
        show("1.Tasks")
        show("2.Notes")
        show("3.Study Timer")
        show("4.Status")
        show("5.Logout")

        ch = input("> ")

        if ch == "1":
            tasks_menu(student_id)
        elif ch == "2":
            notes_menu(student_id)
        elif ch == "3":
            study_timer()
        elif ch == "4":
            # Dummy sensor values for demo
            posture_status = random.choice(["GOOD", "BAD"])
            focus_status = random.choice(["GOOD", "BAD"])
            status_screen(posture_status, focus_status)
        elif ch == "5":
            break

# ==================================================
# MAIN LOOP
# ==================================================
while True:
    user = login()
    home(user)