from flask import Blueprint, render_template, redirect, url_for, flash, session
from app.models import Channel, Calibration
from app.routes.auth import role_required

channels_bp = Blueprint('channels', __name__)

@channels_bp.route('/<channel_id>')
@role_required('review')
def view_channel(channel_id):
    """View details of a single channel"""
    channel = Channel.get_by_id(channel_id)
    if not channel:
        flash('Channel not found', 'danger')
        return redirect(url_for('probes.list_probes'))
    
    # Get calibration history for this channel
    calibrations = Calibration.get_by_channel(channel_id)
    
    user = {
        'user_name': session.get('user_name'),
        'can_calibrate': session.get('can_calibrate'),
        'can_review': session.get('can_review')
    }
    return render_template('channel_view.html',
                         channel=channel,
                         calibrations=calibrations,
                         user=user)