"""
CPU CRUD API
"""
import uuid
from datetime import datetime
from flask import Blueprint, request, jsonify
from config import CPUS_FILE
from utils import load_data, save_data, parse_date_to_timestamp

cpus_bp = Blueprint('api_cpus', __name__)


def _safe_sort_key(x, key):
    val = x.get(key)
    if val is None:
        return 0 if key in ['cores', 'threads', 'views'] else ''
    return val


@cpus_bp.route('/api/cpus')
def api_cpus():
    cpus = load_data(CPUS_FILE)
    hide_hidden = request.args.get('all', '0') == '0'
    if hide_hidden:
        cpus = [c for c in cpus if c.get('visible', True)]
    keyword = request.args.get('q', '').strip().lower()
    if keyword:
        cpus = [c for c in cpus if keyword in c.get('name', '').lower() or
                keyword in c.get('manufacturer', '').lower()]
    sort_by = request.args.get('sort', 'default')
    reverse = request.args.get('order', 'desc') == 'desc'
    if sort_by == 'default':
        cpus = sorted(cpus, key=lambda x: (
            not x.get('is_pinned', False),
            -(parse_date_to_timestamp(x.get('publish_date', '')) or
              parse_date_to_timestamp(x.get('created_at', '')) or 0)
        ))
    elif sort_by in ['name', 'cores', 'threads', 'price_usd', 'created_at',
                      'publish_date', 'views', 'updated_at']:
        cpus = sorted(cpus, key=lambda x: _safe_sort_key(x, sort_by), reverse=reverse)
    return jsonify(cpus)


@cpus_bp.route('/api/cpus/<cpu_id>')
def api_cpu_detail(cpu_id):
    cpus = load_data(CPUS_FILE)
    cpu = next((c for c in cpus if c['id'] == cpu_id), None)
    if not cpu:
        return jsonify({'error': 'CPU not found'}), 404
    return jsonify(cpu)


@cpus_bp.route('/api/cpus', methods=['POST'])
def api_create_cpu():
    data = request.get_json()
    cpus = load_data(CPUS_FILE)
    data['id'] = uuid.uuid4().hex[:12]
    data['created_at'] = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
    data['visible'] = data.get('visible', True)
    data['publish_date'] = data.get('publish_date', '')
    data['views'] = data.get('views', 0)
    data['is_pinned'] = data.get('is_pinned', False)
    cpus.append(data)
    save_data(CPUS_FILE, cpus)
    return jsonify(data)


@cpus_bp.route('/api/cpus/<cpu_id>', methods=['PUT'])
def api_update_cpu(cpu_id):
    data = request.get_json()
    cpus = load_data(CPUS_FILE)
    cpu = next((c for c in cpus if c['id'] == cpu_id), None)
    if not cpu:
        return jsonify({'error': 'CPU not found'}), 404
    cpu.update(data)
    cpu['updated_at'] = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
    save_data(CPUS_FILE, cpus)
    return jsonify(cpu)


@cpus_bp.route('/api/cpus/<cpu_id>', methods=['DELETE'])
def api_delete_cpu(cpu_id):
    cpus = load_data(CPUS_FILE)
    cpus = [c for c in cpus if c['id'] != cpu_id]
    save_data(CPUS_FILE, cpus)
    return jsonify({'success': True})


@cpus_bp.route('/api/cpus/<cpu_id>/visible', methods=['POST'])
def api_toggle_cpu_visible(cpu_id):
    cpus = load_data(CPUS_FILE)
    cpu = next((c for c in cpus if c['id'] == cpu_id), None)
    if not cpu:
        return jsonify({'error': 'CPU not found'}), 404
    cpu['visible'] = not cpu.get('visible', True)
    save_data(CPUS_FILE, cpus)
    return jsonify({'success': True, 'visible': cpu['visible']})