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# The script stores and displays information about elements' electron configurations and Lewis structures
# based on the provided table.

# --- Data Structure ---
# Using a list of dictionaries to store the data, where each dictionary represents an element.
elements_data = [
    {
        "symbole": "H",
        "configuration": "K(1)",
        "representation_lewis": "H (1 valence electron)",
        "valence_electrons": 1
    },
    {
        "symbole": "C",
        "configuration": "K(2) L(4)",
        "representation_lewis": "•Ċ• (4 valence electrons)",
        "valence_electrons": 4
    },
    {
        "symbole": "N",
        "configuration": "K(2) L(5)",
        "representation_lewis": ":Ṅ• (5 valence electrons, 1 lone pair)",
        "valence_electrons": 5
    },
    {
        "symbole": "O",
        "configuration": "K(2) L(6)",
        "representation_lewis": ":Ö: (6 valence electrons, 2 lone pairs)",
        "valence_electrons": 6
    },
    {
        "symbole": "P",
        "configuration": "K(2) L(8) M(5)",
        "representation_lewis": ":Ṗ• (5 valence electrons, 1 lone pair)",
        "valence_electrons": 5
    },
    {
        "symbole": "Cl",
        "configuration": "K(2) L(8) M(7)",
        "representation_lewis": ":Cl̈: (7 valence electrons, 3 lone pairs)",
        "valence_electrons": 7
    },
    {
        "symbole": "Na",
        "configuration": "K(2) L(8) M(1)",
        "representation_lewis": "Na• (1 valence electron)",
        "valence_electrons": 1
    },
    {
        "symbole": "Ne",
        "configuration": "K(2) L(8)",
        "representation_lewis": ":Ne: (8 valence electrons, 4 lone pairs - stable octet)",
        "valence_electrons": 8
    },
]

# --- Display Function ---

def afficher_tableau_elements(data):
    """
    Displays the elements' data in a formatted table.
    """
    print("\n--- Tableau des Configurations Électroniques et Représentations de Lewis ---")

    # Define the column widths for proper alignment
    w_symbole = 8
    w_config = 18
    w_lewis = 60

    # Print the header
    header = (
        f"| {'SYMBOLE':<{w_symbole}} "
        f"| {'CONFIGURATION':<{w_config}} "
        f"| {'REPRÉSENTATION DE LEWIS (Notes)':<{w_lewis}} |"
    )
    separator = "-" * len(header)

    print(separator)
    print(header)
    print(separator)

    # Print the data rows
    for element in data:
        row = (
            f"| {element['symbole']:<{w_symbole}} "
            f"| {element['configuration']:<{w_config}} "
            f"| {element['representation_lewis']:<{w_lewis}} |"
        )
        print(row)
        print(separator)

# --- Execution ---

# 1. Display the full table
afficher_tableau_elements(elements_data)

# 2. Example of how to access specific data
print("\n--- Exemple d'accès aux données ---")
try:
    # Find the data for Oxygen (O)
    oxygen = next(item for item in elements_data if item["symbole"] == "O")
    print(f"L'oxygène ({oxygen['symbole']}) a la configuration : {oxygen['configuration']}")
    print(f"Il possède {oxygen['valence_electrons']} électrons de valence.")
except StopIteration:
    print("Élément non trouvé.")

# 3. Example of filtering data (e.g., elements with 5 valence electrons)
print("\n--- Éléments avec 5 Électrons de Valence ---")
elements_cinq_valence = [
    e['symbole'] for e in elements_data if e['valence_electrons'] == 5
]
print(f"Les éléments avec 5 électrons de valence sont : {', '.join(elements_cinq_valence)}")