"""
Erfolgs-Dialog für Profil-Export

Zeigt exportierte Dateien an.
"""

import os
import logging
import subprocess
import platform
from pathlib import Path
from typing import List

from PyQt5.QtWidgets import (
    QDialog, QVBoxLayout, QHBoxLayout, QLabel, QPushButton,
    QFrame, QGraphicsDropShadowEffect, QScrollArea, QWidget
)
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QFont, QColor

logger = logging.getLogger("export_success_dialog")


class ExportSuccessDialog(QDialog):
    """Dialog zur Anzeige von Export-Erfolg"""

    def __init__(
        self,
        parent=None,
        exported_files: List[str] = None,
        export_directory: str = ""
    ):
        """
        Initialisiert den Erfolgs-Dialog.

        Args:
            parent: Parent-Widget
            exported_files: Liste der exportierten Dateinamen
            export_directory: Verzeichnis wo Dateien gespeichert wurden
        """
        super().__init__(parent)
        self.exported_files = exported_files or []
        self.export_directory = export_directory
        self.init_ui()

    def init_ui(self):
        """Initialisiert die UI"""

        # Dialog-Eigenschaften
        self.setWindowTitle("Export erfolgreich")
        self.setWindowFlags(Qt.Dialog | Qt.FramelessWindowHint)
        self.setAttribute(Qt.WA_TranslucentBackground, True)
        self.setModal(True)

        # Dynamische Höhe basierend auf Anzahl der Dateien
        base_height = 280
        if len(self.exported_files) > 2:
            base_height += 20 * (len(self.exported_files) - 2)  # Extra für mehr Dateien

        self.setFixedSize(500, min(base_height, 500))

        # Hauptlayout
        main_layout = QVBoxLayout(self)
        main_layout.setContentsMargins(20, 20, 20, 20)

        # Container mit modernem Design
        self.container = QFrame()
        self.container.setObjectName("exportSuccessContainer")
        self.container.setStyleSheet("""
            #exportSuccessContainer {
                background-color: white;
                border-radius: 12px;
                border: 1px solid #E5E7EB;
            }
        """)

        # Schatten-Effekt
        shadow = QGraphicsDropShadowEffect()
        shadow.setBlurRadius(30)
        shadow.setXOffset(0)
        shadow.setYOffset(10)
        shadow.setColor(QColor(0, 0, 0, 80))
        self.container.setGraphicsEffect(shadow)

        # Container-Layout
        container_layout = QVBoxLayout(self.container)
        container_layout.setSpacing(18)
        container_layout.setContentsMargins(30, 25, 30, 25)

        # Header mit Icon und Titel
        header_layout = QHBoxLayout()
        header_layout.setSpacing(15)

        # Erfolgs-Icon
        icon_label = QLabel("✅")
        icon_label.setStyleSheet("font-size: 32px;")
        icon_label.setFixedSize(40, 40)
        icon_label.setAlignment(Qt.AlignCenter)

        # Titel
        title_label = QLabel("Profil exportiert!")
        title_font = QFont("Poppins", 16)
        title_font.setWeight(QFont.DemiBold)
        title_label.setFont(title_font)
        title_label.setStyleSheet("color: #1F2937;")

        header_layout.addWidget(icon_label)
        header_layout.addWidget(title_label, 1)

        container_layout.addLayout(header_layout)

        # Dateien-Liste
        files_label = QLabel("Dateien:")
        files_label.setStyleSheet("color: #6B7280; font-size: 13px; font-weight: 600;")
        container_layout.addWidget(files_label)

        # Scrollbare Liste für Dateien
        scroll_area = QScrollArea()
        scroll_area.setWidgetResizable(True)
        scroll_area.setFrameShape(QFrame.NoFrame)
        scroll_area.setStyleSheet("""
            QScrollArea {
                background-color: #F9FAFB;
                border-radius: 6px;
                border: 1px solid #E5E7EB;
            }
        """)

        files_widget = QWidget()
        files_layout = QVBoxLayout(files_widget)
        files_layout.setSpacing(4)
        files_layout.setContentsMargins(10, 10, 10, 10)

        for filename in self.exported_files:
            file_label = QLabel(f"• {filename}")
            file_label.setStyleSheet("""
                color: #374151;
                font-size: 12px;
                font-family: 'Courier New', monospace;
                padding: 2px;
            """)
            file_label.setWordWrap(True)
            files_layout.addWidget(file_label)

        files_layout.addStretch()
        scroll_area.setWidget(files_widget)
        scroll_area.setMaximumHeight(120)

        container_layout.addWidget(scroll_area)

        # Speicherort
        location_label = QLabel(f"Gespeichert in:")
        location_label.setStyleSheet("color: #6B7280; font-size: 12px;")

        path_label = QLabel(self._format_path(self.export_directory))
        path_label.setStyleSheet("""
            color: #4B5563;
            font-size: 11px;
            font-family: 'Courier New', monospace;
        """)
        path_label.setWordWrap(True)
        path_label.setTextInteractionFlags(Qt.TextSelectableByMouse)

        container_layout.addWidget(location_label)
        container_layout.addWidget(path_label)

        # Spacer
        container_layout.addStretch()

        # Button-Layout
        button_layout = QHBoxLayout()
        button_layout.setSpacing(10)
        button_layout.addStretch()

        # Ordner öffnen Button
        self.open_folder_button = QPushButton("Ordner öffnen")
        self.open_folder_button.setMinimumHeight(38)
        self.open_folder_button.setMinimumWidth(120)
        self.open_folder_button.setCursor(Qt.PointingHandCursor)
        self.open_folder_button.setStyleSheet("""
            QPushButton {
                background-color: #F3F4F6;
                color: #374151;
                border: none;
                border-radius: 6px;
                font-size: 13px;
                font-weight: 600;
                padding: 8px 16px;
            }
            QPushButton:hover {
                background-color: #E5E7EB;
            }
            QPushButton:pressed {
                background-color: #D1D5DB;
            }
        """)
        self.open_folder_button.clicked.connect(self.open_folder)

        # OK Button
        self.ok_button = QPushButton("OK")
        self.ok_button.setMinimumHeight(38)
        self.ok_button.setMinimumWidth(100)
        self.ok_button.setCursor(Qt.PointingHandCursor)
        self.ok_button.setStyleSheet("""
            QPushButton {
                background-color: #10B981;
                color: white;
                border: none;
                border-radius: 6px;
                font-size: 13px;
                font-weight: 600;
                padding: 8px 16px;
            }
            QPushButton:hover {
                background-color: #059669;
            }
            QPushButton:pressed {
                background-color: #047857;
            }
        """)
        self.ok_button.clicked.connect(self.accept)

        button_layout.addWidget(self.open_folder_button)
        button_layout.addWidget(self.ok_button)

        container_layout.addLayout(button_layout)

        # Container zum Hauptlayout hinzufügen
        main_layout.addWidget(self.container)

    def open_folder(self):
        """Öffnet den Export-Ordner im Datei-Explorer"""
        if not self.export_directory or not os.path.exists(self.export_directory):
            logger.warning(f"Export-Verzeichnis existiert nicht: {self.export_directory}")
            return

        try:
            system = platform.system()

            if system == "Windows":
                # Windows Explorer
                os.startfile(self.export_directory)
            elif system == "Darwin":
                # macOS Finder
                subprocess.run(["open", self.export_directory])
            elif system == "Linux":
                # Linux File Manager
                subprocess.run(["xdg-open", self.export_directory])
            else:
                logger.warning(f"Unbekanntes Betriebssystem: {system}")

            logger.info(f"Ordner geöffnet: {self.export_directory}")

        except Exception as e:
            logger.error(f"Fehler beim Öffnen des Ordners: {e}")

    def _format_path(self, path: str) -> str:
        """
        Formatiert den Pfad für die Anzeige.
        Kürzt zu lange Pfade.
        """
        if not path:
            return ""

        max_length = 60
        if len(path) <= max_length:
            return path

        # Pfad kürzen: Anfang ... Ende
        start_length = 25
        end_length = max_length - start_length - 3

        return f"{path[:start_length]}...{path[-end_length:]}"


# Helper-Funktion für einfache Verwendung

def show_export_success(
    parent,
    exported_files: List[str],
    export_directory: str
):
    """
    Zeigt den Export-Erfolgs-Dialog modal an.

    Args:
        parent: Parent-Widget
        exported_files: Liste der exportierten Dateinamen
        export_directory: Verzeichnis wo Dateien gespeichert wurden
    """
    dialog = ExportSuccessDialog(parent, exported_files, export_directory)
    dialog.exec_()