import os
import subprocess
import json
import ttkbootstrap as tb
from ttkbootstrap.constants import *
from tkinter import filedialog, messagebox, StringVar
from ..core.core import convert_markdown

CONFIG_FILE = os.path.join(os.path.expanduser("~"), ".markdown_converter_config.json")

def save_config(font_name):
    with open(CONFIG_FILE, "w", encoding="utf-8") as f:
        json.dump({"font": font_name}, f)

def load_config():
    if os.path.exists(CONFIG_FILE):
        with open(CONFIG_FILE, "r", encoding="utf-8") as f:
            data = json.load(f)
            return data.get("font", "")
    return ""

def open_with_default_app(filepath):
    try:
        os.startfile(filepath)  # solo su Windows
    except Exception as e:
        messagebox.showerror("Errore", f"Impossibile aprire il file:\n{str(e)}")

def open_output_folder(filepath):
    try:
        folder = os.path.dirname(filepath)
        os.startfile(folder)
    except Exception as e:
        messagebox.showerror("Errore", f"Impossibile aprire la cartella:\n{str(e)}")

def run_app():
    app = tb.Window(themename="sandstone")
    app.title("Markdown Converter")
    app.geometry("680x240")
    app.resizable(False, False)

    selected_file = StringVar()
    selected_font = StringVar(value=load_config())
    selected_template = StringVar()
    output_path = StringVar()

    def browse_markdown():
        path = filedialog.askopenfilename(filetypes=[("Markdown files", "*.md")])
        if path:
            selected_file.set(path)

    def browse_template():
        path = filedialog.askopenfilename(filetypes=[("DOCX files", "*.docx")])
        if path:
            selected_template.set(path)

    def convert(fmt):
        file_path = selected_file.get()
        font = selected_font.get()
        template = selected_template.get()

        if not file_path:
            messagebox.showerror("Errore", "Seleziona un file Markdown.")
            return

        try:
            output = convert_markdown(file_path, fmt, font, template)
            output_path.set(output)
            save_config(font)
            messagebox.showinfo("Successo", f"File convertito:\n{output}")
        except Exception as e:
            messagebox.showerror("Errore", str(e))

    # Layout
    tb.Label(app, text="File Markdown:").grid(row=0, column=0, padx=10, pady=10, sticky="w")
    tb.Entry(app, textvariable=selected_file, width=60).grid(row=0, column=1, padx=5, sticky="w")
    tb.Button(app, text="Sfoglia", command=browse_markdown, bootstyle=PRIMARY).grid(row=0, column=2, padx=5)

    tb.Label(app, text="Font:").grid(row=1, column=0, padx=10, pady=10, sticky="w")
    fonts = ["Arial", "Times New Roman", "Verdana", "Calibri", "Courier New"]
    tb.Combobox(app, values=fonts, textvariable=selected_font, width=30, bootstyle=INFO).grid(row=1, column=1, sticky="w", padx=5)

    tb.Label(app, text="Template DOCX (opzionale):").grid(row=2, column=0, padx=10, pady=10, sticky="w")
    tb.Entry(app, textvariable=selected_template, width=60).grid(row=2, column=1, padx=5)
    tb.Button(app, text="Sfoglia", command=browse_template, bootstyle=SECONDARY).grid(row=2, column=2, padx=5)

    tb.Button(app, text="Converti in PDF", command=lambda: convert("PDF"), bootstyle=SUCCESS).grid(row=3, column=0, pady=20)
    tb.Button(app, text="Converti in DOCX", command=lambda: convert("DOCX"), bootstyle=SUCCESS).grid(row=3, column=1, sticky="w", pady=20)

    tb.Button(app, text="Apri file", command=lambda: open_with_default_app(output_path.get()), bootstyle=WARNING).grid(row=4, column=0, padx=10, pady=10)
    tb.Button(app, text="Apri cartella", command=lambda: open_output_folder(output_path.get()), bootstyle=WARNING).grid(row=4, column=1, sticky="w", padx=5)

    app.mainloop()