import sys
from tkinter import Button, Frame, Label, Tk
from tkinter.filedialog import askdirectory, askopenfile

from src.clangformat import clang_format, parse_clang_format_output
from src.utils import analyze_args, exts_list


class GUI:
    def __init__(self) -> None:
        self.name = "Errsy"
        self.parent = Tk()
        self.parent.resizable(False, False)
        self.f = Frame(self.parent)

    def start(self) -> None:
        """Affiche la fenêtre"""
        self._main_screen()
        # self._change_pos(1280, 720)
        self.parent.title(self.name)
        self.parent.mainloop()

    def _change_pos(self, x: int, y: int) -> None:
        """Change les dimensions de la fenêtre"""
        width = self.parent.winfo_screenwidth()
        height = self.parent.winfo_screenheight()

        # Centre
        x_i = (width // 2) - (x // 2)
        y_i = (height // 2) - (y // 2)

        self.parent.geometry(f"{x}x{y}+{x_i}+{y_i}")

    def _open_file(self) -> None:
        try:
            chemin = askopenfile(
                title=f"Choisir un fichier - {self.name}",
                filetypes=[("Tous les fichiers", "*")]
                + [
                    (langage, f"*.{ext}")
                    for langage, exts in exts_list.items()
                    for ext in exts
                ],
            )
        except AttributeError:
            print("Impossible de trouver le fichier", file=sys.stderr)
            exit(1)
        else:
            if chemin:
                return self._analyse(2, chemin.name)

    def _open_directory(self) -> None:
        try:
            chemin = askdirectory()
        except AttributeError:
            print("Impossible de trouver le dossier", file=sys.stderr)
            exit(1)
        else:
            return self._analyse(2, chemin)

    def _main_screen(self) -> None:
        """Écran principal"""
        Label(
            self.parent,
            text=f"{self.name} est une application qui permet d'utiliser "
            "plus facilement clang-format",
        ).grid(column=0, row=0, rowspan=2)

        Button(self.parent, text="Ouvrir un fichier", command=self._open_file).grid(
            column=1, row=0
        )
        Button(
            self.parent, text="Ouvrir un dossier", command=self._open_directory
        ).grid(column=1, row=1)

    def _analyse(self, start_row: int, path: str) -> None:
        """Analyse les données"""

        self.f.destroy()
        self.f = Frame(self.parent)
        self.f.grid()

        files = analyze_args([path])
        idx = start_row
        for file in files:
            clang_format_output = clang_format(file)
            parsed_output = parse_clang_format_output(clang_format_output)

            if parsed_output:
                for error in parsed_output:
                    Label(
                        self.parent,
                        text=f"Avertissement dans {error.filename} "
                        f"à la ligne {error.line_number},"
                        f"caractère {error.column_number}.",
                    ).grid(column=0, row=idx, columnspan=1)
                    idx += 1
            else:
                Label(
                    self.parent,
                    text=f"Aucun avertissement trouvé dans {file}.",
                ).grid(column=0, row=idx, columnspan=1)
                idx += 1