import os
import threading
import logging
import customtkinter as ctk
from tkinter import filedialog, messagebox
import download_sharepoint  # Importerer din eksisterende logik

# --- Logging Handler for GUI ---
class TextboxHandler(logging.Handler):
    def __init__(self, textbox):
        super().__init__()
        self.textbox = textbox

    def emit(self, record):
        msg = self.format(record)
        self.textbox.after(0, self.append_msg, msg)

    def append_msg(self, msg):
        self.textbox.configure(state="normal")
        self.textbox.insert("end", msg + "\n")
        self.textbox.see("end")
        self.textbox.configure(state="disabled")

# --- Main App ---
class SharepointApp(ctk.CTk):
    def __init__(self):
        super().__init__()

        self.title("SharePoint Download Tool - UX")
        self.geometry("900x750")
        ctk.set_appearance_mode("dark")
        ctk.set_default_color_theme("blue")

        # Layout
        self.grid_columnconfigure(1, weight=1)
        self.grid_rowconfigure(0, weight=1)

        # Sidebar for indstillinger
        self.sidebar_frame = ctk.CTkFrame(self, width=350, corner_radius=0)
        self.sidebar_frame.grid(row=0, column=0, sticky="nsew")
        self.sidebar_frame.grid_rowconfigure(9, weight=1)

        self.logo_label = ctk.CTkLabel(self.sidebar_frame, text="Indstillinger", font=ctk.CTkFont(size=20, weight="bold"))
        self.logo_label.grid(row=0, column=0, padx=20, pady=(20, 10))

        # Input Felter
        self.entries = {}
        fields = [
            ("TENANT_ID", "Tenant ID"),
            ("CLIENT_ID", "Client ID"),
            ("CLIENT_SECRET", "Client Secret"),
            ("SITE_URL", "Site URL"),
            ("DOCUMENT_LIBRARY", "Library Navn"),
            ("FOLDERS_TO_DOWNLOAD", "Mapper (komma-sep)"),
            ("LOCAL_PATH", "Lokal Sti")
        ]

        for i, (key, label) in enumerate(fields):
            lbl = ctk.CTkLabel(self.sidebar_frame, text=label)
            lbl.grid(row=i*2+1, column=0, padx=20, pady=(10, 0), sticky="w")
            
            entry = ctk.CTkEntry(self.sidebar_frame, width=280, placeholder_text=f"Indtast {label}")
            if key == "CLIENT_SECRET":
                entry.configure(show="*")
            entry.grid(row=i*2+2, column=0, padx=20, pady=(0, 5))
            self.entries[key] = entry

        # Browse knap til lokal sti
        self.browse_button = ctk.CTkButton(self.sidebar_frame, text="Vælg Mappe", command=self.browse_folder, height=32)
        self.browse_button.grid(row=15, column=0, padx=20, pady=10)

        # Gem knap
        self.save_button = ctk.CTkButton(self.sidebar_frame, text="Gem Indstillinger", command=self.save_settings, fg_color="transparent", border_width=2)
        self.save_button.grid(row=16, column=0, padx=20, pady=10)

        # Højre side (Log og Status)
        self.main_frame = ctk.CTkFrame(self, corner_radius=0, fg_color="transparent")
        self.main_frame.grid(row=0, column=1, sticky="nsew", padx=20, pady=20)
        self.main_frame.grid_rowconfigure(1, weight=1)
        self.main_frame.grid_columnconfigure(0, weight=1)

        self.status_label = ctk.CTkLabel(self.main_frame, text="Status: Klar", font=ctk.CTkFont(size=16))
        self.status_label.grid(row=0, column=0, pady=(0, 10), sticky="w")

        self.log_textbox = ctk.CTkTextbox(self.main_frame, state="disabled")
        self.log_textbox.grid(row=1, column=0, sticky="nsew")

        self.start_button = ctk.CTkButton(self.main_frame, text="Start Synkronisering", command=self.start_sync_thread, height=50, font=ctk.CTkFont(size=16, weight="bold"))
        self.start_button.grid(row=2, column=0, pady=(20, 0), sticky="ew")

        # Initialisering
        self.load_settings()
        self.setup_logging()

    def setup_logging(self):
        handler = TextboxHandler(self.log_textbox)
        handler.setFormatter(logging.Formatter('%(asctime)s: %(message)s', datefmt='%H:%M:%S'))
        download_sharepoint.logger.addHandler(handler)

    def browse_folder(self):
        path = filedialog.askdirectory()
        if path:
            self.entries["LOCAL_PATH"].delete(0, "end")
            self.entries["LOCAL_PATH"].insert(0, path)

    def load_settings(self):
        if os.path.exists("connection_info.txt"):
            config = download_sharepoint.load_config("connection_info.txt")
            for key, entry in self.entries.items():
                val = config.get(key, "")
                entry.insert(0, val)

    def save_settings(self):
        config_lines = []
        for key, entry in self.entries.items():
            val = entry.get()
            config_lines.append(f'{key} = "{val}"')
        
        with open("connection_info.txt", "w", encoding="utf-8") as f:
            f.write("\n".join(config_lines))
        logger = logging.getLogger("sharepoint_gui")
        # trigger a small log to show save happened
        messagebox.showinfo("Succes", "Indstillinger er gemt i connection_info.txt")

    def start_sync_thread(self):
        self.save_settings()
        self.start_button.configure(state="disabled", text="Arbejder...")
        self.status_label.configure(text="Status: Synkroniserer...", text_color="orange")
        
        thread = threading.Thread(target=self.run_sync, daemon=True)
        thread.start()

    def run_sync(self):
        try:
            download_sharepoint.main()
            self.status_label.configure(text="Status: Gennemført!", text_color="green")
        except Exception as e:
            self.status_label.configure(text=f"Status: Fejl!", text_color="red")
            messagebox.showerror("Fejl", str(e))
        finally:
            self.start_button.configure(state="normal", text="Start Synkronisering")

if __name__ == "__main__":
    app = SharepointApp()
    app.mainloop()