import os
import hashlib
import shutil
import json
import threading
import re
import io
import exifread
import tkinter as tk
from tkinter import ttk, filedialog, messagebox
from datetime import datetime
from PIL import Image
from PIL.ExifTags import TAGS
import pillow_heif
from pillow_heif import register_heif_opener

class FileOrganizerApp:
    def __init__(self, root):
        self.root = root
        self.root.title("文件整理工具")
         
        # 變量初始化
        self.base_dir = tk.StringVar()
        self.target_dir = tk.StringVar()
        self.duplicate_dir = tk.StringVar()
        self.unique_dir = tk.StringVar()
        self.enable_classify = tk.BooleanVar(value=True)
        self.enable_md5list = tk.BooleanVar(value=False)
        
        self.dictfile_name = "base_md5_list.txt"
        
        # 創(chuàng)建register_heif_opener模塊里的一個類然后再Image.open打開HEIC文件
        register_heif_opener()
        
        # 創(chuàng)建界面組件
        self.create_widgets()

    def create_widgets(self):
        # 目錄選擇部分
        dir_frame = ttk.LabelFrame(self.root, text="目錄配置")
        dir_frame.pack(padx=10, pady=5, fill=tk.X)
        
        self.create_dir_selector(dir_frame, "基準(zhǔn)目錄:", self.base_dir, 0)
        self.create_dir_selector(dir_frame, "目標(biāo)目錄:", self.target_dir, 1)
        self.create_dir_selector(dir_frame, "重復(fù)文件目錄:", self.duplicate_dir, 2)
        self.create_dir_selector(dir_frame, "非重復(fù)文件目錄:", self.unique_dir, 3)
        
        # 選項配置
        opt_frame = ttk.LabelFrame(self.root, text="選項配置")
        opt_frame.pack(padx=10, pady=5, fill=tk.X)
        
        ttk.Checkbutton(opt_frame, text="啟用分類存儲", variable=self.enable_classify).pack(anchor=tk.W)
        ttk.Checkbutton(opt_frame, text="讀取MD5列表", variable=self.enable_md5list).pack(anchor=tk.W)
        
        # 操作按鈕
        btn_frame = ttk.Frame(self.root)
        btn_frame.pack(padx=10, pady=5, fill=tk.X)
        ttk.Button(btn_frame, text="開始處理", command=self.start_processing).pack(side=tk.LEFT)
        
        # 日志顯示
        self.log_text = tk.Text(self.root, height=15)
        self.scrollbar = tk.Scrollbar(root, command=self.log_text.yview)  
        self.scrollbar.pack(side=tk.RIGHT, fill=tk.Y)  
        self.log_text.config(yscrollcommand=self.scrollbar.set)
        self.log_text.pack(padx=10, pady=5, fill=tk.BOTH, expand=True)

    def create_dir_selector(self, parent, label, var, row):
        frame = ttk.Frame(parent)
        frame.grid(row=row, column=0, sticky="ew", padx=5, pady=2)
        
        ttk.Label(frame, text=label).pack(side=tk.LEFT)
        entry = ttk.Entry(frame, textvariable=var, width=40)
        entry.pack(side=tk.LEFT, fill=tk.X, expand=True, padx=5)
        ttk.Button(frame, text="瀏覽...", command=lambda: self.select_directory(var)).pack(side=tk.LEFT)
    
    def select_directory(self, var):
        dir_path = filedialog.askdirectory()
        if dir_path:
            var.set(dir_path)
    
    def log(self, message):
        # 批量更新日志，減少頻繁刷新UI
        self.log_text.insert(tk.END, message + "\n")
        self.root.update_idletasks()
    
    def calculate_md5(self, filepath):
        hash_md5 = hashlib.md5()
        with open(filepath, "rb") as f:
            for chunk in iter(lambda: f.read(4096), b""):
                hash_md5.update(chunk)
        return hash_md5.hexdigest()
    
    def save_dict_to_file(self, dictionary, file_path):
        with open(file_path, 'w', encoding='utf-8') as file:
            json.dump(dictionary, file, ensure_ascii=False, indent=4)

    def load_dict_from_file(self, file_path):
        with open(file_path, 'r', encoding='utf-8') as file:
            return json.load(file)
    
    def get_unique_filename(self, dest_dir, filename):
        base, ext = os.path.splitext(filename)
        counter = 1
        new_name = filename
        while os.path.exists(os.path.join(dest_dir, new_name)):
            new_name = f"{base}_{counter}{ext}"
            counter += 1
        return new_name

    def is_image(self, file_path):
        ext = os.path.splitext(file_path)[1].lower()
        return ext in [".jpg", ".jpeg", ".png", ".bmp", ".heic"]

    def get_file_time(self, file_path):
        mtime = os.path.getmtime(file_path)
        ext = os.path.splitext(file_path)[1].lower()

        if self.is_image(file_path):
            if ext == ".heic":
                mtime = self.get_heic_original(file_path)
                mtime = self.replace_limited(mtime, ':', '-', 2)
                dt_object = datetime.strptime(mtime, "%Y-%m-%d %H:%M:%S")
                mtime = dt_object.timestamp()
            else:
                with open(file_path, 'rb') as f:
                    tags = exifread.process_file(f, details=False)
                    if 'EXIF DateTimeOriginal' in tags:
                        mtime = str(tags['EXIF DateTimeOriginal'])
                        mtime = self.replace_limited(mtime, ':', '-', 2)
                        dt_object = datetime.strptime(mtime, "%Y-%m-%d %H:%M:%S")
                        mtime = dt_object.timestamp()
        return mtime

    def process_files(self):
        base_files = {}
        
        if self.enable_md5list.get():
            base_md5_path = os.path.join(self.base_dir.get(), self.dictfile_name)
            if os.path.exists(base_md5_path):
                base_files = self.load_dict_from_file(base_md5_path)
                self.log(f"基準(zhǔn)MD5已加載: {base_md5_path}")
        else:
            for root, _, files in os.walk(self.base_dir.get()):
                for file in files:
                    path = os.path.join(root, file)
                    md5 = self.calculate_md5(path)
                    base_files[md5] = file
                    self.log(f"基準(zhǔn)文件已掃描: {path}")

        for root, _, files in os.walk(self.target_dir.get()):
            for file in files:
                src_path = os.path.join(root, file)
                md5 = self.calculate_md5(src_path)
                self.log(f"正在處理: {src_path}")
                
                if md5 in base_files:
                    dest_dir = self.duplicate_dir.get()
                    dest_path = os.path.join(dest_dir, self.get_unique_filename(dest_dir, file))
                    shutil.move(src_path, dest_path)
                    self.log(f"重復(fù)文件已移動: {dest_path}")
                else:
                    if self.enable_classify.get():
                        mtime = self.get_file_time(src_path)
                        date_dir_Y = datetime.fromtimestamp(mtime).strftime("%Y")
                        date_dir_m = datetime.fromtimestamp(mtime).strftime("%m")
                        dest_dir = os.path.join(self.unique_dir.get(), date_dir_Y, date_dir_m)
                    else:
                        dest_dir = self.unique_dir.get()
                    
                    os.makedirs(dest_dir, exist_ok=True)
                    dest_path = os.path.join(dest_dir, self.get_unique_filename(dest_dir, file))
                    shutil.move(src_path, dest_path)
                    self.log(f"非重復(fù)文件已移動: {dest_path}")

        dest_md5_path = os.path.join(self.unique_dir.get(), self.dictfile_name)
        self.save_dict_to_file(base_files, dest_md5_path)
        self.log(f"基準(zhǔn)MD5已輸出: {dest_md5_path}")

    def start_processing(self):
        try:
            dirs = [
                self.base_dir.get(),
                self.target_dir.get(),
                self.duplicate_dir.get(),
                self.unique_dir.get()
            ]
            
            for d in dirs:
                if not d:
                    raise ValueError("所有目錄都必須設(shè)置")
                os.makedirs(d, exist_ok=True)
            
            # 啟動新線程處理文件
            threading.Thread(target=self.process_files, daemon=True).start()
            messagebox.showinfo("完成", "文件處理已開始，請稍候！")
        except Exception as e:
            messagebox.showerror("錯誤", str(e))
            self.log(f"錯誤發(fā)生: {str(e)}")

if __name__ == "__main__":
    root = tk.Tk()
    app = FileOrganizerApp(root)
    root.mainloop()