Create CurrencyTool.py

Author: rogers-cyber

18-Currency-converter/CurrencyTool.py

@@ -0,0 +1,331 @@
+import sys
+import os
+import json
+import threading
+import tkinter as tk
+from tkinter import ttk, messagebox
+import sv_ttk
+import requests
+
+# =========================
+# Helpers
+# =========================
+def resource_path(file_name):
+    base_path = getattr(sys, "_MEIPASS", os.path.dirname(os.path.abspath(__file__)))
+    return os.path.join(base_path, file_name)
+
+DATA_FILE = resource_path("rates_live.json")
+
+# =========================
+# App Setup
+# =========================
+root = tk.Tk()
+root.title("CurrencyTool Pro")
+root.geometry("980x620")
+root.minsize(900, 550)
+
+sv_ttk.set_theme("light")
+
+# =========================
+# Globals
+# =========================
+amount_var = tk.DoubleVar(value=100.0)
+from_var = tk.StringVar(value="USD")
+to_var = tk.StringVar(value="EUR")
+result_var = tk.StringVar(value="—")
+status_var = tk.StringVar(value="Ready")
+mode_var = tk.StringVar(value="Offline")
+
+# Default fallback rates
+RATES = {
+    "USD": 1.0,
+    "EUR": 0.92,
+    "GBP": 0.79,
+    "JPY": 157.0,
+    "AUD": 1.52,
+    "CAD": 1.36,
+    "CHF": 0.88,
+    "CNY": 7.18
+}
+
+# =========================
+# Persistence
+# =========================
+def load_rates():
+    if os.path.exists(DATA_FILE):
+        try:
+            with open(DATA_FILE, "r", encoding="utf-8") as f:
+                data = json.load(f)
+                RATES.clear()
+                RATES.update(data)
+                RATES["USD"] = 1.0
+                mode_var.set("Online")
+        except Exception:
+            pass
+
+def save_rates():
+    with open(DATA_FILE, "w", encoding="utf-8") as f:
+        json.dump(RATES, f, indent=2)
+
+# =========================
+# Status
+# =========================
+def set_status(msg):
+    status_var.set(msg)
+    root.update_idletasks()
+
+# =========================
+# Live Rate Fetch
+# =========================
+def fetch_live_rates():
+    update_btn.config(state="disabled")
+    set_status("🌐 Fetching live rates...")
+    try:
+        r = requests.get("https://open.er-api.com/v6/latest/USD", timeout=6)
+        data = r.json()
+
+        if data.get("result") != "success":
+            raise RuntimeError
+
+        RATES.clear()
+        RATES.update(data["rates"])
+        RATES["USD"] = 1.0
+
+        save_rates()
+        refresh_currency_lists()
+
+        mode_var.set("Online")
+        set_status("🌐 Live rates updated & saved")
+
+    except Exception:
+        messagebox.showwarning(
+            "Live Update Failed",
+            "Unable to fetch live rates.\nUsing offline data."
+        )
+        set_status("Offline mode")
+
+    finally:
+        update_btn.config(state="normal")
+
+# =========================
+# Conversion
+# =========================
+def convert_currency():
+    try:
+        amount = amount_var.get()
+        f, t = from_var.get(), to_var.get()
+
+        usd = amount / RATES[f]
+        result = usd * RATES[t]
+
+        result_var.set(f"{result:,.4f} {t}")
+        set_status(f"Converted ({mode_var.get()})")
+
+    except Exception:
+        messagebox.showerror("Error", "Invalid amount or currency.")
+
+def swap_currencies():
+    f, t = from_var.get(), to_var.get()
+    from_var.set(t)
+    to_var.set(f)
+
+# =========================
+# Rate Editor
+# =========================
+def open_rate_editor():
+    editor = tk.Toplevel(root)
+    editor.title("✏️ Manual Rate Override (USD Base)")
+
+    # Center the window
+    w, h = 420, 520
+    ws = root.winfo_screenwidth()
+    hs = root.winfo_screenheight()
+    x = (ws // 2) - (w // 2)
+    y = (hs // 2) - (h // 2)
+    editor.geometry(f"{w}x{h}+{x}+{y}")
+    editor.transient(root)
+    editor.grab_set()
+
+    frame = ttk.Frame(editor, padding=16)
+    frame.pack(fill="both", expand=True)
+
+    ttk.Label(
+        frame,
+        text="Manual Rate Override",
+        font=("Segoe UI", 14, "bold")
+    ).pack(anchor="w")
+
+    ttk.Label(
+        frame,
+        text="Saving switches app to Offline mode",
+        foreground="#666"
+    ).pack(anchor="w", pady=(2, 10))
+
+    # Scrollable frame
+    canvas = tk.Canvas(frame)
+    scrollbar = ttk.Scrollbar(frame, orient="vertical", command=canvas.yview)
+    scrollable_frame = ttk.Frame(canvas)
+
+    scrollable_frame.bind(
+        "<Configure>",
+        lambda e: canvas.configure(scrollregion=canvas.bbox("all"))
+    )
+    canvas.create_window((0, 0), window=scrollable_frame, anchor="nw")
+    canvas.configure(yscrollcommand=scrollbar.set)
+
+    canvas.pack(side="left", fill="both", expand=True)
+    scrollbar.pack(side="right", fill="y")
+
+    entries = {}
+
+    for c in sorted(RATES.keys()):
+        row = ttk.Frame(scrollable_frame)
+        row.pack(fill="x", pady=2)
+
+        ttk.Label(row, text=c, width=6).pack(side="left")
+
+        v = tk.DoubleVar(value=RATES[c])
+        ttk.Entry(row, textvariable=v, width=12).pack(side="left", padx=4)
+        entries[c] = v
+
+        def make_save(currency):
+            return lambda: save_single_rate(currency)
+
+        ttk.Button(
+            row,
+            text="💾",
+            width=3,
+            command=make_save(c),
+            style="Action.TButton"
+        ).pack(side="right")
+
+    def save_single_rate(currency):
+        try:
+            RATES[currency] = float(entries[currency].get())
+            save_rates()  # Save to JSON
+            refresh_currency_lists()
+            mode_var.set("Offline")
+            set_status(f"💾 {currency} rate saved")
+        except Exception:
+            messagebox.showerror("Invalid Input", "Rate must be numeric.")
+
+
+# =========================
+# UI Refresh
+# =========================
+def refresh_currency_lists():
+    cur = sorted(RATES.keys())
+    from_combo["values"] = cur
+    to_combo["values"] = cur
+
+# =========================
+# Styles
+# =========================
+style = ttk.Style()
+style.configure("Title.TLabel", font=("Segoe UI", 24, "bold"))
+style.configure("Subtitle.TLabel", font=("Segoe UI", 11))
+style.configure("Action.TButton", font=("Segoe UI", 11, "bold"), padding=10)
+style.configure("Result.TLabel", font=("Segoe UI", 18, "bold"))
+
+# =========================
+# Layout
+# =========================
+root.columnconfigure(0, weight=1)
+root.rowconfigure(1, weight=1)
+
+# ----- Header -----
+header = ttk.Frame(root, padding=(24, 16))
+header.grid(row=0, column=0, sticky="ew")
+header.columnconfigure(1, weight=1)
+
+ttk.Label(header, text="CurrencyTool Pro", style="Title.TLabel").grid(row=0, column=0, sticky="w")
+ttk.Label(
+    header,
+    text="Live + Offline currency converter with persistence",
+    style="Subtitle.TLabel"
+).grid(row=1, column=0, sticky="w", pady=(2, 0))
+
+controls = ttk.Frame(header)
+controls.grid(row=0, column=1, rowspan=2, sticky="e")
+
+# 🌐 Update Live Rates button
+update_btn = ttk.Button(
+    controls,
+    text="🌐 Update Live Rates",
+    command=lambda: threading.Thread(target=fetch_live_rates, daemon=True).start(),
+    style="Action.TButton"
+)
+update_btn.pack(side="right", padx=6)
+
+# ✏️ Manual Override button
+manual_btn = ttk.Button(
+    controls,
+    text="✏️ Manual Override",
+    command=open_rate_editor,
+    style="Action.TButton"
+)
+manual_btn.pack(side="right", padx=6)
+
+# ----- Main Converter Card -----
+main = ttk.Frame(root, padding=(24, 0, 24, 16))
+main.grid(row=1, column=0, sticky="nsew")
+main.columnconfigure(0, weight=1)
+
+card = ttk.LabelFrame(main, text="Converter", padding=20)
+card.grid(row=0, column=0, sticky="ew")
+for i in range(4):
+    card.columnconfigure(i, weight=1)
+
+# Amount
+ttk.Label(card, text="Amount").grid(row=0, column=0, sticky="w", pady=(0, 4))
+ttk.Entry(card, textvariable=amount_var, font=("Segoe UI", 11)).grid(row=1, column=0, sticky="ew", padx=(0, 10))
+
+# From currency
+ttk.Label(card, text="From").grid(row=0, column=1, sticky="w", pady=(0, 4))
+from_combo = ttk.Combobox(card, textvariable=from_var, state="readonly", font=("Segoe UI", 11))
+from_combo.grid(row=1, column=1, sticky="ew", padx=(0, 10))
+
+# To currency
+ttk.Label(card, text="To").grid(row=0, column=2, sticky="w", pady=(0, 4))
+to_combo = ttk.Combobox(card, textvariable=to_var, state="readonly", font=("Segoe UI", 11))
+to_combo.grid(row=1, column=2, sticky="ew", padx=(0, 10))
+
+# Swap button
+ttk.Button(card, text="⇄", command=swap_currencies, style="Action.TButton").grid(row=1, column=3, sticky="ew")
+
+# Result
+ttk.Label(card, text="Result", style="Subtitle.TLabel").grid(
+    row=2, column=0, columnspan=4, pady=(20, 4), sticky="w"
+)
+ttk.Label(card, textvariable=result_var, style="Result.TLabel", font=("Segoe UI", 14, "bold")).grid(
+    row=3, column=0, columnspan=4, sticky="w"
+)
+
+# ----- Actions -----
+actions = ttk.Frame(main, padding=(0, 0, 0, 12))
+actions.grid(row=1, column=0, pady=16, sticky="ew")
+actions.columnconfigure(0, weight=1)
+
+ttk.Button(
+    actions,
+    text="Convert",
+    command=convert_currency,
+    style="Action.TButton"
+).pack(side="left")
+
+ttk.Label(actions, textvariable=mode_var, foreground="#666", font=("Segoe UI", 10)).pack(side="right")
+
+# ----- Status -----
+status = ttk.Label(root, textvariable=status_var, anchor="w", padding=6)
+status.grid(row=2, column=0, sticky="ew")
+
+# =========================
+# Init
+# =========================
+load_rates()
+refresh_currency_lists()
+
+# =========================
+# Run
+# =========================
+root.mainloop()