import os
import tkinter as tk
from tkinter import filedialog, messagebox

# Shapefile変換関数
def convert_shapefile(input_path, temp1_path, temp2_path, output_path, input_srs, tokyo_geographic_srs, jgd2000_geographic_srs, jgd2000_projected_srs, gsb_file, encoding):
    # Step 1: 平面直角座標系（Tokyo）→ 地理座標系（Tokyo）
    print(f"Step 1: {os.path.basename(input_path)} を Tokyo 地理座標系に変換中...")
    ogr2ogr_step1 = (
        f'ogr2ogr -f "ESRI Shapefile" -s_srs "{input_srs}" -t_srs "{tokyo_geographic_srs}" '
        f'-lco ENCODING={encoding} "{temp1_path}" "{input_path}"'
    )
    os.system(ogr2ogr_step1)

    # Step 2: 地理座標系（Tokyo）→ 地理座標系（JGD2000, GSB補正使用）
    print(f"Step 2: {os.path.basename(temp1_path)} を JGD2000 地理座標系に変換中...")
    ogr2ogr_step2 = (
        f'ogr2ogr -f "ESRI Shapefile" -s_srs "+proj=latlong +nadgrids={gsb_file} +ellps=bessel" '
        f'-t_srs "{jgd2000_geographic_srs}" -lco ENCODING={encoding} "{temp2_path}" "{temp1_path}"'
    )
    os.system(ogr2ogr_step2)

    # Step 3: 地理座標系（JGD2000）→ 平面直角座標系（JGD2000）
    print(f"Step 3: {os.path.basename(temp2_path)} を JGD2000 平面直角座標系に変換中...")
    ogr2ogr_step3 = (
        f'ogr2ogr -f "ESRI Shapefile" -s_srs "{jgd2000_geographic_srs}" -t_srs "{jgd2000_projected_srs}" '
        f'-lco ENCODING={encoding} "{output_path}" "{temp2_path}"'
    )
    os.system(ogr2ogr_step3)

# GUIでの設定
def run_gui():
    def browse_input_folder():
        folder = filedialog.askdirectory()
        input_folder_var.set(folder)

    def browse_temp_folder():
        folder = filedialog.askdirectory()
        temp_folder_var.set(folder)

    def browse_output_folder():
        folder = filedialog.askdirectory()
        output_folder_var.set(folder)

    def browse_gsb_file():
        file = filedialog.askopenfilename(filetypes=[("GSB Files", "*.gsb")])
        gsb_file_var.set(file)

    def start_conversion():
        input_folder = input_folder_var.get()
        temp_folder = temp_folder_var.get()
        output_folder = output_folder_var.get()
        input_srs = tokyo_projected_srs_var.get()
        output_srs = jgd2000_projected_srs_var.get()
        gsb_file = gsb_file_var.get()
        encoding = encoding_var.get()

        if not all([input_folder, temp_folder, output_folder, input_srs, output_srs, gsb_file, encoding]):
            messagebox.showerror("Error", "全てのフィールドを入力してください！")
            return

        os.makedirs(temp_folder, exist_ok=True)
        os.makedirs(output_folder, exist_ok=True)

        for filename in os.listdir(input_folder):
            if filename.endswith(".shp"):
                input_shp = os.path.join(input_folder, filename)
                temp1_shp = os.path.join(temp_folder, f"temp1_{filename}")
                temp2_shp = os.path.join(temp_folder, f"temp2_{filename}")
                output_shp = os.path.join(output_folder, filename)

                print(f"Processing {filename}...")
                convert_shapefile(
                    input_shp, temp1_shp, temp2_shp, output_shp,
                    input_srs, "EPSG:4301", "EPSG:4612", output_srs, gsb_file, encoding
                )

        messagebox.showinfo("完了", "全ての変換が完了しました！")

    # GUI作成
    root = tk.Tk()
    root.title("tokyo → 2000 Shapefile変換ツール")

    input_folder_var = tk.StringVar()
    temp_folder_var = tk.StringVar()
    output_folder_var = tk.StringVar()
    tokyo_projected_srs_var = tk.StringVar(value="EPSG:30170")
    jgd2000_projected_srs_var = tk.StringVar(value="EPSG:2452")
    gsb_file_var = tk.StringVar(value="C:/par/TKY2JGD.gsb")  # デフォルト値を設定
    encoding_var = tk.StringVar(value="UTF-8")  # デフォルト値を設定

    tk.Label(root, text="入力フォルダ:").grid(row=0, column=0, sticky="e")
    tk.Entry(root, textvariable=input_folder_var, width=50).grid(row=0, column=1)
    tk.Button(root, text="参照", command=browse_input_folder).grid(row=0, column=2)

    tk.Label(root, text="一時フォルダ:").grid(row=1, column=0, sticky="e")
    tk.Entry(root, textvariable=temp_folder_var, width=50).grid(row=1, column=1)
    tk.Button(root, text="参照", command=browse_temp_folder).grid(row=1, column=2)

    tk.Label(root, text="出力フォルダ:").grid(row=2, column=0, sticky="e")
    tk.Entry(root, textvariable=output_folder_var, width=50).grid(row=2, column=1)
    tk.Button(root, text="参照", command=browse_output_folder).grid(row=2, column=2)

    tk.Label(root, text="Tokyo 平面直角座標系 (EPSG):").grid(row=3, column=0, sticky="e")
    tk.Entry(root, textvariable=tokyo_projected_srs_var, width=50).grid(row=3, column=1)

    tk.Label(root, text="JGD2000 平面直角座標系 (EPSG):").grid(row=4, column=0, sticky="e")
    tk.Entry(root, textvariable=jgd2000_projected_srs_var, width=50).grid(row=4, column=1)

    tk.Label(root, text="GSBファイル:").grid(row=5, column=0, sticky="e")
    tk.Entry(root, textvariable=gsb_file_var, width=50).grid(row=5, column=1)
    tk.Button(root, text="参照", command=browse_gsb_file).grid(row=5, column=2)

    tk.Label(root, text="Encoding (UTF-8, Shift_JIS, etc):").grid(row=6, column=0, sticky="e")
    tk.Entry(root, textvariable=encoding_var, width=50).grid(row=6, column=1)

    tk.Button(root, text="変換開始", command=start_conversion).grid(row=7, column=1)

    root.mainloop()

# 実行
if __name__ == "__main__":
    run_gui()