"""
EU-Utility - Inventory Manager Plugin

Track inventory items, value, and weight.
"""

import json
from pathlib import Path
from collections import defaultdict

from PyQt6.QtWidgets import (
    QWidget, QVBoxLayout, QHBoxLayout, QLabel,
    QPushButton, QTableWidget, QTableWidgetItem,
    QLineEdit, QProgressBar, QFrame
)
from PyQt6.QtCore import Qt

from plugins.base_plugin import BasePlugin


class InventoryManagerPlugin(BasePlugin):
    """Track and manage inventory."""
    
    name = "Inventory"
    version = "1.0.0"
    author = "ImpulsiveFPS"
    description = "Track items, TT value, and weight"
    hotkey = "ctrl+shift+i"
    
    def initialize(self):
        """Setup inventory manager."""
        self.data_file = Path("data/inventory.json")
        self.data_file.parent.mkdir(parents=True, exist_ok=True)
        
        self.items = []
        self.max_slots = 200
        self.max_weight = 355.0
        
        self._load_data()
    
    def _load_data(self):
        """Load inventory data."""
        if self.data_file.exists():
            try:
                with open(self.data_file, 'r') as f:
                    data = json.load(f)
                    self.items = data.get('items', [])
            except:
                pass
    
    def _save_data(self):
        """Save inventory data."""
        with open(self.data_file, 'w') as f:
            json.dump({'items': self.items}, f, indent=2)
    
    def get_ui(self):
        """Create inventory UI."""
        widget = QWidget()
        widget.setStyleSheet("background: transparent;")
        layout = QVBoxLayout(widget)
        layout.setSpacing(15)
        layout.setContentsMargins(0, 0, 0, 0)
        
        # Title
        title = QLabel("🎒 Inventory Manager")
        title.setStyleSheet("color: white; font-size: 16px; font-weight: bold;")
        layout.addWidget(title)
        
        # Stats
        stats_frame = QFrame()
        stats_frame.setStyleSheet("""
            QFrame {
                background-color: rgba(30, 35, 45, 200);
                border: 1px solid rgba(100, 110, 130, 80);
                border-radius: 6px;
            }
        """)
        stats_layout = QVBoxLayout(stats_frame)
        
        # Slots
        slots_used = len(self.items)
        slots_layout = QHBoxLayout()
        slots_layout.addWidget(QLabel("Slots:"))
        self.slots_progress = QProgressBar()
        self.slots_progress.setMaximum(self.max_slots)
        self.slots_progress.setValue(slots_used)
        self.slots_progress.setStyleSheet("""
            QProgressBar {
                background-color: rgba(60, 70, 90, 150);
                border: none;
                border-radius: 3px;
                text-align: center;
                color: white;
            }
            QProgressBar::chunk {
                background-color: #4a9eff;
                border-radius: 3px;
            }
        """)
        slots_layout.addWidget(self.slots_progress)
        self.slots_label = QLabel(f"{slots_used}/{self.max_slots}")
        self.slots_label.setStyleSheet("color: white;")
        slots_layout.addWidget(self.slots_label)
        stats_layout.addLayout(slots_layout)
        
        # Weight
        total_weight = sum(item.get('weight', 0) for item in self.items)
        weight_layout = QHBoxLayout()
        weight_layout.addWidget(QLabel("Weight:"))
        self.weight_progress = QProgressBar()
        self.weight_progress.setMaximum(int(self.max_weight))
        self.weight_progress.setValue(int(total_weight))
        self.weight_progress.setStyleSheet("""
            QProgressBar {
                background-color: rgba(60, 70, 90, 150);
                border: none;
                border-radius: 3px;
                text-align: center;
                color: white;
            }
            QProgressBar::chunk {
                background-color: #ffc107;
                border-radius: 3px;
            }
        """)
        weight_layout.addWidget(self.weight_progress)
        self.weight_label = QLabel(f"{total_weight:.1f}/{self.max_weight} kg")
        self.weight_label.setStyleSheet("color: white;")
        weight_layout.addWidget(self.weight_label)
        stats_layout.addLayout(weight_layout)
        
        # PED value
        total_tt = sum(item.get('tt', 0) for item in self.items)
        ped_label = QLabel(f"💰 Total TT: {total_tt:.2f} PED")
        ped_label.setStyleSheet("color: #ffc107; font-weight: bold;")
        stats_layout.addWidget(ped_label)
        
        layout.addWidget(stats_frame)
        
        # Items table
        self.items_table = QTableWidget()
        self.items_table.setColumnCount(5)
        self.items_table.setHorizontalHeaderLabels(["Item", "Qty", "TT", "Weight", "Container"])
        self.items_table.setStyleSheet("""
            QTableWidget {
                background-color: rgba(30, 35, 45, 200);
                color: white;
                border: 1px solid rgba(100, 110, 130, 80);
                border-radius: 6px;
            }
            QHeaderView::section {
                background-color: rgba(35, 40, 55, 200);
                color: rgba(255,255,255,180);
                padding: 8px;
                font-weight: bold;
                font-size: 11px;
            }
        """)
        self.items_table.horizontalHeader().setStretchLastSection(True)
        layout.addWidget(self.items_table)
        
        self._refresh_items()
        
        # Scan button
        scan_btn = QPushButton("Scan Inventory")
        scan_btn.setStyleSheet("""
            QPushButton {
                background-color: #ff8c42;
                color: white;
                padding: 12px;
                border: none;
                border-radius: 4px;
                font-weight: bold;
            }
        """)
        scan_btn.clicked.connect(self._scan_inventory)
        layout.addWidget(scan_btn)
        
        layout.addStretch()
        return widget
    
    def _refresh_items(self):
        """Refresh items table."""
        self.items_table.setRowCount(len(self.items))
        
        for i, item in enumerate(self.items):
            self.items_table.setItem(i, 0, QTableWidgetItem(item.get('name', 'Unknown')))
            self.items_table.setItem(i, 1, QTableWidgetItem(str(item.get('quantity', 1))))
            self.items_table.setItem(i, 2, QTableWidgetItem(f"{item.get('tt', 0):.2f}"))
            self.items_table.setItem(i, 3, QTableWidgetItem(f"{item.get('weight', 0):.2f}"))
            self.items_table.setItem(i, 4, QTableWidgetItem(item.get('container', 'Main')))
    
    def _scan_inventory(self):
        """Scan inventory with OCR."""
        # TODO: Implement OCR
        pass
    
    def add_item(self, name, quantity=1, tt=0.0, weight=0.0, container='Main'):
        """Add item to inventory."""
        # Check if exists
        for item in self.items:
            if item['name'] == name and item['container'] == container:
                item['quantity'] += quantity
                item['tt'] += tt
                item['weight'] += weight
                self._save_data()
                self._refresh_items()
                return
        
        # New item
        self.items.append({
            'name': name,
            'quantity': quantity,
            'tt': tt,
            'weight': weight,
            'container': container
        })
        self._save_data()
        self._refresh_items()