import tkinter as tk
from tkinter import ttk, filedialog, messagebox
from datetime import datetime


class JournalGeneratorGUI:
    """日记账生成器GUI界面"""
    
    def __init__(self, root, journal_generator, parser_factory):
        self.root = root
        self.journal_generator = journal_generator
        self.parser_factory = parser_factory
        
        self.company_var = tk.StringVar(value="成都锦高量科科技有限公司")
        self.bank_var = tk.StringVar(value="建设银行")
        self.param_file_var = tk.StringVar()
        self.flow_file_var = tk.StringVar()
        
        self.setup_ui()
    
    def setup_ui(self):
        """设置界面"""
        self.root.title("出纳日记账生成工具")
        self.root.geometry("600x300")
        
        frame_company = ttk.Frame(self.root, padding="10")
        frame_company.pack(fill=tk.X)
        ttk.Label(frame_company, text="公司名称：").pack(side=tk.LEFT)
        company_combo = ttk.Combobox(frame_company, textvariable=self.company_var, state="readonly")
        company_combo["values"] = ["成都锦高量科科技有限公司", "成都云启寰宇科技有限公司", "成都橙风有量科技有限公司"]
        company_combo.pack(side=tk.LEFT, padx=5)
        
        frame_bank = ttk.Frame(self.root, padding="10")
        frame_bank.pack(fill=tk.X)
        ttk.Label(frame_bank, text="开户银行：").pack(side=tk.LEFT)
        bank_combo = ttk.Combobox(frame_bank, textvariable=self.bank_var, state="readonly")
        bank_combo["values"] = ["建设银行", "中国银行", "农业银行"]
        bank_combo.pack(side=tk.LEFT, padx=5)
        
        frame_param = ttk.Frame(self.root, padding="10")
        frame_param.pack(fill=tk.X)
        ttk.Label(frame_param, text="参数表文件：").pack(side=tk.LEFT)
        ttk.Entry(frame_param, textvariable=self.param_file_var, width=50).pack(side=tk.LEFT, padx=5)
        ttk.Button(frame_param, text="选择", command=self.select_param_file).pack(side=tk.LEFT)
        
        frame_flow = ttk.Frame(self.root, padding="10")
        frame_flow.pack(fill=tk.X)
        ttk.Label(frame_flow, text="流水文件：").pack(side=tk.LEFT)
        ttk.Entry(frame_flow, textvariable=self.flow_file_var, width=50).pack(side=tk.LEFT, padx=5)
        ttk.Button(frame_flow, text="选择", command=self.select_flow_file).pack(side=tk.LEFT)
        
        frame_generate = ttk.Frame(self.root, padding="10")
        frame_generate.pack(fill=tk.X)
        ttk.Button(frame_generate, text="生成日记账", command=self.generate_journal, style="Accent.TButton").pack()
    
    def select_param_file(self):
        """选择参数表文件"""
        file_path = filedialog.askopenfilename(
            title="选择参数表文件",
            filetypes=[("Excel文件", "*.xlsx *.xls"), ("所有文件", "*.*")]
        )
        if file_path:
            self.param_file_var.set(file_path)
    
    def select_flow_file(self):
        """选择银行流水文件"""
        bank = self.bank_var.get()
        file_path = filedialog.askopenfilename(
            title=f"选择{bank}流水文件",
            filetypes=[("Excel文件", "*.xlsx *.xls"), ("所有文件", "*.*")]
        )
        if file_path:
            self.flow_file_var.set(file_path)
    
    def generate_journal(self):
        """生成日记账"""
        company = self.company_var.get()
        bank = self.bank_var.get()
        param_file = self.param_file_var.get()
        flow_file = self.flow_file_var.get()
        
        if not param_file or not flow_file:
            messagebox.showwarning("提示", "请先选择参数表和流水文件")
            return
        
        parser = self.parser_factory.get_parser(bank)
        if parser is None:
            messagebox.showerror("错误", f"不支持的银行：{bank}")
            return
        
        flow_df = parser.parse(flow_file)
        if flow_df is None:
            return
        
        journal_df = self.journal_generator.generate_journal_data(company, bank, param_file, flow_df)
        if journal_df is None:
            return
        
        today = datetime.now().strftime("%Y年%m月%d日")
        save_path = filedialog.asksaveasfilename(
            title="保存日记账",
            defaultextension=".xlsx",
            initialfile=f"{company}-{bank}-日记账-{today}.xlsx",
            filetypes=[("Excel文件", "*.xlsx"), ("所有文件", "*.*")]
        )
        if save_path:
            if self.journal_generator.save_journal(journal_df, save_path):
                messagebox.showinfo("成功", f"日记账已生成：{save_path}")