"""User management routes for profiles, disponibilities, and contracts.

This module handles user CRUD operations, profile editing, player availability,
and contract management.
"""

import os
from flask import Blueprint, render_template, redirect, url_for, flash, request, jsonify, send_file
from flask_login import login_required, current_user
from extensions import db, hash_password
from models import User, ROLES, ESPORT_GAMES, PlayerDisponibility, UserGamertag, GAME_PLATFORMS, Contract, OrgTeam, CoachAvailability, TeamNote, PersonalNote, OneOnOneRequest, Match, Team, TeamMember, MatchParticipant, Tryout
from werkzeug.utils import secure_filename
from datetime import datetime, timedelta, date as date_type
import requests


users_bp = Blueprint('users', __name__, url_prefix='/users')


def update_user_gamertags(user, selected_games):
    """Update gamertags for a user based on form input.
    
    Handles creating, updating, and deleting gamertag records for the specified games.
    Used by both edit_user and edit_profile routes to avoid code duplication.
    
    Args:
        user: The User object to update gamertags for.
        selected_games: List of game names that were selected in the form.
    """
    # Get all existing gamertags for this user
    existing_gamertags = {gt.game: gt for gt in user.gamertags}
    
    for game in selected_games:
        gamertag = request.form.get(f'gamertag_{game}', '').strip()
        platform = request.form.get(f'platform_{game}', '').strip() if GAME_PLATFORMS.get(game) else None
        
        existing = existing_gamertags.get(game)
        if gamertag:
            if existing:
                existing.gamertag = gamertag
                existing.platform = platform
            else:
                gt = UserGamertag(user_id=user.id, game=game, gamertag=gamertag, platform=platform)
                db.session.add(gt)
        elif existing:
            db.session.delete(existing)
    
    # Remove gamertags for games that are no longer selected
    for game in existing_gamertags:
        if game not in selected_games:
            db.session.delete(existing_gamertags[game])


@users_bp.route('')
@login_required
def list_users():
    """List all users for management (president only).
    
    Displays all users ordered by role and name. Only accessible to presidents.
    
    Returns:
        Response: Rendered users list template or redirect to dashboard.
    """
    if current_user.role != 'president':
        flash('Only the president can manage users.', 'danger')
        return redirect(url_for('main.dashboard'))

    users = User.query.order_by(User.role, User.full_name).all()
    return render_template('pages/users.html', users=users, roles=ROLES)


@users_bp.route('/<int:user_id>/edit', methods=['GET', 'POST'])
@login_required
def edit_user(user_id):
    """Edit an existing user (president only).
    
    GET: Render the user edit form.
    POST: Update user details including gamertags and password.
    
    Args:
        user_id: The ID of the user to edit.
        
    Returns:
        Response: Edit form or redirect to users list.
    """
    if current_user.role != 'president':
        flash('Only the president can edit users.', 'danger')
        return redirect(url_for('main.dashboard'))

    user = User.query.get_or_404(user_id)

    if request.method == 'POST':
        full_name = request.form.get('full_name')
        email = request.form.get('email')
        phone = request.form.get('phone')
        role = request.form.get('role')
        is_active = request.form.get('is_active_account') == 'on'

        if role not in ROLES:
            flash('Invalid role selected.', 'danger')
            return render_template('pages/edit_user.html', user=user, roles=ROLES, esport_games=ESPORT_GAMES, game_platforms=GAME_PLATFORMS)

        selected_games = request.form.getlist('games')
        discord_username = request.form.get('discord_username', '').strip()
        league_os_profile = request.form.get('league_os_profile', '').strip()

        user.full_name = full_name
        user.email = email
        user.phone = phone
        user.role = role
        user.is_active_account = is_active
        user.games = ','.join(selected_games) if selected_games else None
        user.discord_username = discord_username or None
        user.league_os_profile = league_os_profile or None

        # Update gamertags using shared function
        update_user_gamertags(user, selected_games)

        password = request.form.get('password')
        if password:
            user.password_hash = hash_password(password)

        db.session.commit()
        flash(f'User {user.full_name} updated successfully!', 'success')
        return redirect(url_for('users.list_users'))

    user_gamertags = {gt.game: {'gamertag': gt.gamertag, 'platform': gt.platform} for gt in user.gamertags}
    return render_template('pages/edit_user.html', user=user, roles=ROLES, esport_games=ESPORT_GAMES, game_platforms=GAME_PLATFORMS, user_gamertags=user_gamertags)


@users_bp.route('/<int:user_id>/delete', methods=['POST'])
@login_required
def delete_user(user_id):
    """Delete a user (president only).
    
    Args:
        user_id: The ID of the user to delete.
        
    Returns:
        Response: Redirect to users list with status message.
    """
    if current_user.role != 'president':
        flash('Only the president can delete users.', 'danger')
        return redirect(url_for('main.dashboard'))

    if current_user.id == user_id:
        flash('You cannot delete your own account.', 'danger')
        return redirect(url_for('users.list_users'))

    user = User.query.get_or_404(user_id)
    db.session.delete(user)
    db.session.commit()
    flash(f'User {user.full_name} has been removed.', 'success')
    return redirect(url_for('users.list_users'))


@users_bp.route('/create', methods=['GET', 'POST'])
@login_required
def create_user():
    """Create a new user (president only).
    
    GET: Render the user creation form.
    POST: Create a new user with the provided details.
    
    Returns:
        Response: Create form or redirect to users list.
    """
    if current_user.role != 'president':
        flash('Only the president can create users.', 'danger')
        return redirect(url_for('main.dashboard'))

    if request.method == 'POST':
        username = request.form.get('username')
        email = request.form.get('email')
        password = request.form.get('password')
        full_name = request.form.get('full_name')
        phone = request.form.get('phone')
        role = request.form.get('role')

        if role not in ROLES:
            flash('Invalid role selected.', 'danger')
            return render_template('pages/create_user.html', roles=ROLES)

        if User.query.filter_by(username=username).first():
            flash('Username already exists.', 'danger')
            return render_template('pages/create_user.html', roles=ROLES)

        if User.query.filter_by(email=email).first():
            flash('Email already registered.', 'danger')
            return render_template('pages/create_user.html', roles=ROLES)

        hashed_password = hash_password(password)
        user = User(
            username=username,
            password_hash=hashed_password,
            role=role,
            full_name=full_name,
            email=email,
            phone=phone
        )
        db.session.add(user)
        db.session.commit()
        flash(f'User {full_name} created as {role}!', 'success')
        return redirect(url_for('users.list_users'))

    return render_template('pages/create_user.html', roles=ROLES)


@users_bp.route('/profile')
@login_required
def profile():
    """View the current user's profile.
    
    Players see their contracts along with their profile information.
    
    Returns:
        Response: Rendered profile template.
    """
    # Get contracts ordered by uploaded_at desc for the current user
    contracts = None
    if current_user.role == 'player':
        contracts = Contract.query.filter_by(player_id=current_user.id).order_by(Contract.uploaded_at.desc()).all()
    return render_template('pages/profile.html', user=current_user, contracts=contracts)


@users_bp.route('/profile/edit', methods=['GET', 'POST'])
@login_required
def edit_profile():
    """Edit the current user's profile.
    
    GET: Render the profile edit form.
    POST: Update profile details including gamertags and password.
    
    Returns:
        Response: Edit form or redirect to profile.
    """
    if request.method == 'POST':
        full_name = request.form.get('full_name')
        email = request.form.get('email')
        phone = request.form.get('phone')

        selected_games = request.form.getlist('games')
        discord_username = request.form.get('discord_username', '').strip()
        league_os_profile = request.form.get('league_os_profile', '').strip()

        if email != current_user.email and User.query.filter_by(email=email).first():
            flash('Email already in use.', 'danger')
            return render_template('pages/edit_profile.html', user=current_user, esport_games=ESPORT_GAMES, game_platforms=GAME_PLATFORMS)

        current_user.full_name = full_name
        current_user.email = email
        current_user.phone = phone
        current_user.games = ','.join(selected_games) if selected_games else None
        current_user.discord_username = discord_username or None
        current_user.league_os_profile = league_os_profile or None

        # Update gamertags using shared function
        update_user_gamertags(current_user, selected_games)

        password = request.form.get('password')
        if password:
            current_user.password_hash = hash_password(password)

        db.session.commit()
        flash('Profile updated successfully!', 'success')
        return redirect(url_for('users.profile'))

    user_gamertags = {gt.game: {'gamertag': gt.gamertag, 'platform': gt.platform} for gt in current_user.gamertags}
    return render_template('pages/edit_profile.html', user=current_user, esport_games=ESPORT_GAMES, game_platforms=GAME_PLATFORMS, user_gamertags=user_gamertags)


# Day names for disponibility display
DAY_NAMES = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']


def add_30_minutes(t):
    """Add 30 minutes to a time object.
    
    Args:
        t (datetime.time): The time object to add 30 minutes to.
        
    Returns:
        datetime.time: New time 30 minutes later.
    """
    return (datetime.combine(datetime.today(), t) + timedelta(minutes=30)).time()


@users_bp.route('/disponibilities')
@login_required
def get_disponibilities():
    """API endpoint to get all player disponibilities for scheduling.
    
    Only accessible to managers, coaches, and scouts. Used for match scheduling.
    
    Returns:
        Response: JSON with disponibility data for all players.
    """
    # Only managers and above can view disponibilities for scheduling
    if not current_user.can_manage_teams() and not current_user.can_schedule_matches():
        return jsonify({'error': 'Unauthorized'}), 403
    
    players = User.query.filter_by(role='player', is_active_account=True).order_by(User.full_name).all()
    result = {}
    
    for player in players:
        disponibilities = list(player.disponibilities)
        result[player.id] = {
            'full_name': player.full_name,
            'disponibilities': [
                {
                    'id': d.id,
                    'day_of_week': d.day_of_week,
                    'day_name': DAY_NAMES[d.day_of_week],
                    'start_time': d.start_time.strftime('%H:%M'),
                    'end_time': d.end_time.strftime('%H:%M')
                }
                for d in disponibilities
            ]
        }
    
    return jsonify(result)


@users_bp.route('/disponibilities/my')
@login_required
def get_my_disponibilities():
    """API endpoint for players to get their own disponibilities.
    
    Returns:
        Response: JSON with disponibility data grouped by day.
    """
    disponibilities = PlayerDisponibility.query.filter_by(player_id=current_user.id).all()
    
    # Group by day for easier display
    result = {}
    for d in disponibilities:
        day = d.day_of_week
        if day not in result:
            result[day] = []
        result[day].append({
            'id': d.id,
            'day_of_week': d.day_of_week,
            'day_name': DAY_NAMES[d.day_of_week],
            'start_time': d.start_time.strftime('%H:%M'),
            'end_time': d.end_time.strftime('%H:%M')
        })
    
    return jsonify(result)


@users_bp.route('/disponibilities/add', methods=['POST'])
@login_required
def add_disponibility():
    """Add a disponibility block for the current player.
    
    Returns:
        Response: JSON with the created disponibility data.
    """
    day_of_week = request.form.get('day_of_week', type=int)
    start_time_str = request.form.get('start_time')
    
    if day_of_week is None or day_of_week < 0 or day_of_week > 6:
        return jsonify({'error': 'Invalid day of week'}), 400
    
    try:
        start_time = datetime.strptime(start_time_str, '%H:%M').time()
    except (ValueError, TypeError):
        return jsonify({'error': 'Invalid time format'}), 400
    
    end_time = add_30_minutes(start_time)
    
    disponibility = PlayerDisponibility(
        player_id=current_user.id,
        day_of_week=day_of_week,
        start_time=start_time,
        end_time=end_time
    )
    
    db.session.add(disponibility)
    db.session.commit()
    
    return jsonify({
        'id': disponibility.id,
        'day_of_week': disponibility.day_of_week,
        'day_name': DAY_NAMES[disponibility.day_of_week],
        'start_time': disponibility.start_time.strftime('%H:%M'),
        'end_time': disponibility.end_time.strftime('%H:%M')
    })


@users_bp.route('/disponibilities/add_bulk', methods=['POST'])
@login_required
def add_disponibilities_bulk():
    """Add multiple disponibility blocks at once (for grid selection).
    
    Used for the disponibility grid UI where players can select multiple
    time slots at once.
    
    Returns:
        Response: JSON with success status and created slots.
    """
    data = request.get_json()
    slots = data.get('slots', [])  # List of {day_of_week, start_time}
    
    created = []
    for slot in slots:
        day_of_week = slot.get('day_of_week')
        start_time_str = slot.get('start_time')
        
        if day_of_week is None or day_of_week < 0 or day_of_week > 6:
            continue
        
        try:
            start_time = datetime.strptime(start_time_str, '%H:%M').time()
        except (ValueError, TypeError):
            continue
        
        end_time = add_30_minutes(start_time)
        
        # Check if this slot already exists for this player
        existing = PlayerDisponibility.query.filter_by(
            player_id=current_user.id,
            day_of_week=day_of_week,
            start_time=start_time
        ).first()
        
        if not existing:
            disponibility = PlayerDisponibility(
                player_id=current_user.id,
                day_of_week=day_of_week,
                start_time=start_time,
                end_time=end_time
            )
            db.session.add(disponibility)
            db.session.flush()
            created.append({
                'id': disponibility.id,
                'day_of_week': disponibility.day_of_week,
                'day_name': DAY_NAMES[disponibility.day_of_week],
                'start_time': disponibility.start_time.strftime('%H:%M'),
                'end_time': disponibility.start_time.strftime('%H:%M')
            })
    
    db.session.commit()
    return jsonify({'success': True, 'created': created})


@users_bp.route('/disponibilities/clear', methods=['POST'])
@login_required
def clear_disponibilities():
    """Clear all disponibilities for the current player (for resetting).
    
    Returns:
        Response: JSON with success status.
    """
    PlayerDisponibility.query.filter_by(player_id=current_user.id).delete()
    db.session.commit()
    return jsonify({'success': True})


@users_bp.route('/disponibilities/<int:disponibility_id>/delete', methods=['POST'])
@login_required
def delete_disponibility(disponibility_id):
    """Delete a disponibility block.
    
    Args:
        disponibility_id: The ID of the disponibility to delete.
        
    Returns:
        Response: JSON with success status or error.
    """
    disponibility = PlayerDisponibility.query.get_or_404(disponibility_id)
    
    # Only the owner can delete their disponibility
    if disponibility.player_id != current_user.id:
        return jsonify({'error': 'Unauthorized'}), 403
    
    db.session.delete(disponibility)
    db.session.commit()
    
    return jsonify({'success': True})


# Contract Management Functions


def can_manage_player_contract(user, player_id):
    """Check if a user can upload contracts for a specific player.
    
    Presidents and managers can manage all contracts. Coaches can only
    manage contracts for players on their team.
    
    Args:
        user: The User requesting to manage contracts.
        player_id: The ID of the player whose contract is being managed.
        
    Returns:
        bool: True if user has permission to manage the contract.
    """
    # President can manage all contracts
    if user.role == 'president':
        return True
    
    # Manager can upload contracts for any player
    if user.role == 'manager':
        return True
    
    # Coach can upload contracts only for players on their team
    if user.role == 'coach':
        org_team = OrgTeam.query.filter_by(coach_id=user.id).first()
        if org_team:
            player = User.query.get(player_id)
            if player and player.team_id == org_team.id:
                return True
    return False


@users_bp.route('/contracts')
@login_required
def list_contracts():
    """View contracts for the current user (player) or players they manage.
    
    Players see their own contracts. Coaches/managers see contracts for
    players on their teams. Presidents see all contracts.
    
    Returns:
        Response: Rendered contracts list template.
    """
    contracts = None
    
    if current_user.role == 'player':
        # Players see their own contracts
        contracts = Contract.query.filter_by(player_id=current_user.id).order_by(Contract.uploaded_at.desc()).all()
    elif current_user.role in ['president', 'manager', 'coach']:
        # Superiors see contracts for players on their teams
        players = []
        if current_user.role == 'coach':
            org_team = OrgTeam.query.filter_by(coach_id=current_user.id).first()
            if org_team:
                players = User.query.filter_by(role='player', team_id=org_team.id).all()
        else:  # president or manager
            players = User.query.filter_by(role='player').all()
        
        if players:
            player_ids = [p.id for p in players]
            contracts = Contract.query.filter(Contract.player_id.in_(player_ids)).order_by(Contract.uploaded_at.desc()).all()
    
    return render_template('pages/contracts.html', contracts=contracts, players=players if current_user.role in ['president', 'manager', 'coach'] else None)


@users_bp.route('/contracts/upload', methods=['GET', 'POST'])
@login_required
def upload_contract():
    """Upload a contract for a player.
    
    GET: Render the contract upload form.
    POST: Save the uploaded contract file and create database record.
    
    Returns:
        Response: Upload form or redirect to contracts list.
    """
    if current_user.role not in ['president', 'manager', 'coach']:
        flash('Only presidents, managers, and coaches can upload contracts.', 'danger')
        return redirect(url_for('users.list_contracts'))
    
    # Get players this user can manage
    if current_user.role == 'coach':
        org_team = OrgTeam.query.filter_by(coach_id=current_user.id).first()
        players = User.query.filter_by(role='player', team_id=org_team.id).all() if org_team else []
    else:
        players = User.query.filter_by(role='player').all()
    
    if request.method == 'POST':
        player_id = request.form.get('player_id', type=int)
        notes = request.form.get('notes', '').strip()
        
        if not can_manage_player_contract(current_user, player_id):
            flash('You do not have permission to upload a contract for this player.', 'danger')
            return redirect(url_for('users.upload_contract'))
        
        if 'contract_file' not in request.files:
            flash('No file selected.', 'danger')
            return redirect(url_for('users.upload_contract'))
        
        file = request.files['contract_file']
        if file.filename == '':
            flash('No file selected.', 'danger')
            return redirect(url_for('users.upload_contract'))
        
        # Create upload directory
        upload_dir = os.path.join(os.getcwd(), 'documents', 'contrats signés')
        os.makedirs(upload_dir, exist_ok=True)
        
        # Get player info for folder structure
        player = User.query.get_or_404(player_id)
        team = OrgTeam.query.get(player.team_id) if player.team_id else None
        
        # Create team folder if team exists
        if team:
            team_folder = os.path.join(upload_dir, secure_filename(team.name))
            os.makedirs(team_folder, exist_ok=True)
            final_dir = team_folder
        else:
            final_dir = upload_dir
        
        # Generate unique filename
        original_filename = secure_filename(file.filename)
        timestamp = datetime.now().strftime('%Y%m%d_%H%M%S')
        stored_filename = f"{secure_filename(player.full_name)}_{timestamp}_{original_filename}"
        stored_filename = stored_filename.replace(' ', '_')
        
        # Save file
        file_path = os.path.join(final_dir, stored_filename)
        file.save(file_path)
        
        # Create database record
        contract = Contract(
            player_id=player_id,
            team_id=player.team_id,
            uploaded_by_id=current_user.id,
            original_filename=original_filename,
            stored_filename=stored_filename,
            file_path=file_path,
            notes=notes if notes else None
        )
        db.session.add(contract)
        db.session.commit()
        
        flash(f'Contract uploaded successfully for {player.full_name}!', 'success')
        return redirect(url_for('users.list_contracts'))
    
    return render_template('pages/upload_contract.html', players=players)


@users_bp.route('/contracts/<int:contract_id>/upload_signed', methods=['POST'])
@login_required
def upload_signed_contract(contract_id):
    """Upload a signed contract (player only).
    
    Args:
        contract_id: The ID of the contract to upload signed version for.
        
    Returns:
        Response: Redirect to contracts list with status message.
    """
    contract = Contract.query.get_or_404(contract_id)
    
    if not contract.can_upload_signed(current_user):
        flash('Only the player can upload their signed contract.', 'danger')
        return redirect(url_for('users.list_contracts'))
    
    if 'signed_file' not in request.files:
        flash('No file selected.', 'danger')
        return redirect(url_for('users.list_contracts'))
    
    file = request.files['signed_file']
    if file.filename == '':
        flash('No file selected.', 'danger')
        return redirect(url_for('users.list_contracts'))
    
    # Generate unique filename for signed contract
    original_filename = secure_filename(file.filename)
    signed_filename = f"signed_{contract.stored_filename}"
    
    # Save file
    file.save(contract.file_path.replace(contract.stored_filename, signed_filename))
    
    # Update contract record
    contract.signed_filename = signed_filename
    contract.signed_file_path = contract.file_path.replace(contract.stored_filename, signed_filename)
    contract.status = 'signed'
    contract.signed_at = datetime.utcnow()
    db.session.commit()
    
    flash('Signed contract uploaded successfully!', 'success')
    return redirect(url_for('users.list_contracts'))


@users_bp.route('/contracts/<int:contract_id>/download')
@login_required
def download_contract(contract_id):
    """Download a contract file.
    
    Args:
        contract_id: The ID of the contract to download.
        
    Returns:
        Response: File download response.
    """
    contract = Contract.query.get_or_404(contract_id)
    
    if not contract.can_view(current_user):
        flash('You do not have permission to download this contract.', 'danger')
        return redirect(url_for('users.list_contracts'))
    
    return send_file(contract.file_path, as_attachment=True, download_name=contract.original_filename)


@users_bp.route('/contracts/<int:contract_id>/download_signed')
@login_required
def download_signed_contract(contract_id):
    """Download a signed contract file.
    
    Args:
        contract_id: The ID of the contract to download the signed version for.
        
    Returns:
        Response: File download response.
    """
    contract = Contract.query.get_or_404(contract_id)
    
    if not contract.can_view(current_user):
        flash('You do not have permission to download this contract.', 'danger')
        return redirect(url_for('users.list_contracts'))
    
    if not contract.signed_file_path:
        flash('No signed contract available.', 'danger')
        return redirect(url_for('users.list_contracts'))
    
    return send_file(contract.signed_file_path, as_attachment=True, download_name=contract.signed_filename)


# One on One Functions


DISCORD_WEBHOOK_URL = os.environ.get('DISCORD_WEBHOOK_URL', '')


def send_discord_notification(player_name, points, date_str, start_time_str, end_time_str, team_name, coach_name, coach_discord):
    """Send a Discord webhook notification for a One on One request.

    Args:
        player_name: Name of the player making the request.
        points: Discussion points from the player.
        date_str: Date of the requested session.
        start_time_str: Start time of the requested session.
        end_time_str: End time of the requested session.
        team_name: Name of the player's team.
        coach_name: Name of the coach.
        coach_discord: Coach's Discord username.
    """
    if not DISCORD_WEBHOOK_URL:
        return  # No webhook configured, skip notification

    embed = {
        "embeds": [{
            "title": "One on One Request",
            "color": 3447003,  # Blue color
            "fields": [
                {"name": "Player", "value": player_name, "inline": True},
                {"name": "Team", "value": team_name or "Unknown Team", "inline": True},
                {"name": "Date", "value": date_str, "inline": True},
                {"name": "Time", "value": f"{start_time_str} - {end_time_str}", "inline": True},
                {"name": "Discussion Points", "value": points or "No specific points provided", "inline": False}
            ],
            "footer": {
                "text": f"Coach: {coach_name}" + (f" (Discord: {coach_discord})" if coach_discord else "")
            }
        }]
    }

    try:
        requests.post(DISCORD_WEBHOOK_URL, json=embed, timeout=5)
    except Exception:
        pass  # Silently fail if webhook doesn't work


@users_bp.route('/one-on-one', methods=['GET', 'POST'])
@login_required
def one_on_one():
    """One on One request page for players.

    Players can view team notes, personal notes, and request One on One sessions.

    Returns:
        Response: Rendered One on One page.
    """
    if current_user.role != 'player':
        flash('Only players can request One on One sessions.', 'danger')
        return redirect(url_for('main.dashboard'))

    # Get player's team and coach
    org_team = OrgTeam.query.get(current_user.team_id) if current_user.team_id else None
    coach = User.query.get(org_team.coach_id) if org_team and org_team.coach_id else None

    if not coach:
        flash('You do not have a coach assigned to your team.', 'info')

    # Get team notes for this player's team
    team_notes = []
    if org_team:
        team_notes = TeamNote.query.filter_by(org_team_id=org_team.id).order_by(TeamNote.created_at.desc()).all()

    # Get personal notes for this player
    personal_notes = PersonalNote.query.filter_by(player_id=current_user.id).order_by(PersonalNote.created_at.desc()).all()

    # Get coach's availability for the next 7 days
    coach_availability = []
    if coach:
        coach_availability = CoachAvailability.query.filter_by(coach_id=coach.id).all()

    if request.method == 'POST':
        # Handle One on One request submission
        date_str = request.form.get('date')
        start_time_str = request.form.get('start_time')
        end_time_str = request.form.get('end_time')
        points = request.form.get('points', '').strip()

        if not coach:
            flash('Cannot request One on One - no coach assigned.', 'danger')
            return redirect(url_for('users.one_on_one'))

        # Validate date and time
        try:
            date_obj = datetime.strptime(date_str, '%Y-%m-%d').date()
            start_time = datetime.strptime(start_time_str, '%H:%M').time()
            end_time = datetime.strptime(end_time_str, '%H:%M').time()
        except (ValueError, TypeError):
            flash('Invalid date or time format.', 'danger')
            return redirect(url_for('users.one_on_one'))

        # Check if the requested slot is within coach's availability
        date_parts = date_str.split('-')
        check_date = datetime(int(date_parts[0]), int(date_parts[1]), int(date_parts[2]))
        # Python weekday: Monday=0, Sunday=6
        day_of_week = check_date.weekday()

        is_available = any(
            av.day_of_week == day_of_week and
            av.start_time <= start_time and
            av.end_time >= end_time
            for av in coach_availability
        )

        if not is_available:
            flash('The requested time is not within the coach\'s availability.', 'danger')
            return redirect(url_for('users.one_on_one'))

        # Create the request
        request_obj = OneOnOneRequest(
            player_id=current_user.id,
            coach_id=coach.id,
            org_team_id=org_team.id if org_team else None,
            date=date_obj,
            start_time=start_time,
            end_time=end_time,
            points=points if points else None
        )
        db.session.add(request_obj)
        db.session.commit()

        # Send Discord notification
        send_discord_notification(
            player_name=current_user.full_name,
            points=points,
            date_str=date_str,
            start_time_str=start_time_str,
            end_time_str=end_time_str,
            team_name=org_team.name if org_team else None,
            coach_name=coach.full_name,
            coach_discord=coach.discord_username
        )

        flash('One on One request sent to your coach!', 'success')
        return redirect(url_for('users.one_on_one'))

    # Calculate dates for the next week (starting from today)
    dates = []
    for i in range(7):
        d = date_type.today() + timedelta(days=i)
        dates.append({
            'value': d.strftime('%Y-%m-%d'),
            'display': d.strftime('%A, %b %d'),
            'day_of_week': d.weekday()
        })

    # Serialize coach availability for JavaScript
    coach_availability_serialized = [
        {
            'id': av.id,
            'day_of_week': av.day_of_week,
            'start_time': av.start_time.strftime('%H:%M'),
            'end_time': av.end_time.strftime('%H:%M')
        }
        for av in coach_availability
    ]

    return render_template('pages/one_on_one.html',
                          org_team=org_team,
                          coach=coach,
                          team_notes=team_notes,
                          personal_notes=personal_notes,
                          coach_availability=coach_availability_serialized,
                          dates=dates)


@users_bp.route('/coach-availability', methods=['GET', 'POST'])
@login_required
def manage_coach_availability():
    """Manage coach availability (for coaches).

    GET: Render the availability management page.
    POST: Add availability slots via bulk.

    Returns:
        Response: Rendered management page or redirect.
    """
    if current_user.role != 'coach':
        flash('Only coaches can manage availability.', 'danger')
        return redirect(url_for('main.dashboard'))

    if request.method == 'POST':
        data = request.get_json()
        slots = data.get('slots', [])

        created = []
        for slot in slots:
            day_of_week = slot.get('day_of_week')
            start_time_str = slot.get('start_time')

            if day_of_week is None or day_of_week < 0 or day_of_week > 6:
                continue

            try:
                start_time = datetime.strptime(start_time_str, '%H:%M').time()
            except (ValueError, TypeError):
                continue

            end_time = add_30_minutes(start_time)

            # Check if this slot already exists for this coach
            existing = CoachAvailability.query.filter_by(
                coach_id=current_user.id,
                day_of_week=day_of_week,
                start_time=start_time
            ).first()

            if not existing:
                availability = CoachAvailability(
                    coach_id=current_user.id,
                    day_of_week=day_of_week,
                    start_time=start_time,
                    end_time=end_time
                )
                db.session.add(availability)
                db.session.flush()
                created.append({
                    'id': availability.id,
                    'day_of_week': availability.day_of_week,
                    'day_name': DAY_NAMES[availability.day_of_week],
                    'start_time': availability.start_time.strftime('%H:%M'),
                    'end_time': availability.end_time.strftime('%H:%M')
                })

        db.session.commit()
        return jsonify({'success': True, 'created': created})

    # Get existing availability
    existing_availability = CoachAvailability.query.filter_by(coach_id=current_user.id).all()

    return render_template('pages/coach_availability.html',
                          existing_availability=existing_availability)


@users_bp.route('/coach-availability/clear', methods=['POST'])
@login_required
def clear_coach_availability():
    """Clear all coach availability slots.

    Returns:
        Response: JSON with success status.
    """
    if current_user.role != 'coach':
        return jsonify({'error': 'Unauthorized'}), 403

    CoachAvailability.query.filter_by(coach_id=current_user.id).delete()
    db.session.commit()
    return jsonify({'success': True})


@users_bp.route('/coach-availability/<int:availability_id>/delete', methods=['POST'])
@login_required
def delete_coach_availability(availability_id):
    """Delete a coach availability slot.

    Args:
        availability_id: The ID of the availability slot to delete.

    Returns:
        Response: JSON with success status or error.
    """
    if current_user.role != 'coach':
        return jsonify({'error': 'Unauthorized'}), 403

    availability = CoachAvailability.query.get_or_404(availability_id)

    if availability.coach_id != current_user.id:
        return jsonify({'error': 'Unauthorized'}), 403

    db.session.delete(availability)
    db.session.commit()
    return jsonify({'success': True})


@users_bp.route('/api/coach-availability/<int:coach_id>')
@login_required
def api_get_coach_availability(coach_id):
    """API endpoint to get coach availability.

    Args:
        coach_id: The ID of the coach.

    Returns:
        Response: JSON with availability data.
    """
    if current_user.role != 'player':
        return jsonify({'error': 'Unauthorized'}), 403

    availability = CoachAvailability.query.filter_by(coach_id=coach_id).all()

    result = {}
    for av in availability:
        if av.day_of_week not in result:
            result[av.day_of_week] = []
        result[av.day_of_week].append({
            'id': av.id,
            'start_time': av.start_time.strftime('%H:%M'),
            'end_time': av.end_time.strftime('%H:%M')
        })

    return jsonify(result)


@users_bp.route('/team-notes', methods=['GET', 'POST'])
@login_required
def manage_team_notes():
    """Manage team improvement notes (for coaches).

    GET: Render the team notes management page.
    POST: Create or update team notes.

    Returns:
        Response: Rendered management page or redirect.
    """
    if current_user.role != 'coach':
        flash('Only coaches can manage team notes.', 'danger')
        return redirect(url_for('main.dashboard'))

    # Get the coach's team
    org_team = OrgTeam.query.filter_by(coach_id=current_user.id).first()
    if not org_team:
        flash('You are not assigned to coach any team.', 'danger')
        return redirect(url_for('main.dashboard'))

    # Get existing team notes
    team_notes = TeamNote.query.filter_by(org_team_id=org_team.id).order_by(TeamNote.created_at.desc()).all()

    if request.method == 'POST':
        content = request.form.get('content', '').strip()

        if content:
            # Create new team note entry (keeps history)
            note = TeamNote(
                org_team_id=org_team.id,
                coach_id=current_user.id,
                content=content
            )
            db.session.add(note)
            db.session.commit()
            flash('Team notes added successfully!', 'success')
            return redirect(url_for('users.manage_team_notes'))

    return render_template('pages/team_notes.html',
                          org_team=org_team,
                          team_notes=team_notes)


@users_bp.route('/personal-notes', methods=['GET', 'POST'])
@login_required
def manage_personal_notes():
    """Manage personal notes for players (for coaches).

    GET: Render the personal notes management page.
    POST: Create a personal note for a player.

    Returns:
        Response: Rendered management page or redirect.
    """
    if current_user.role != 'coach':
        flash('Only coaches can manage personal notes.', 'danger')
        return redirect(url_for('main.dashboard'))

    # Get players on the coach's team
    org_team = OrgTeam.query.filter_by(coach_id=current_user.id).first()
    players = []
    if org_team:
        players = User.query.filter_by(role='player', team_id=org_team.id).order_by(User.full_name).all()

    if request.method == 'POST':
        player_id = request.form.get('player_id', type=int)
        content = request.form.get('content', '').strip()

        if not player_id or not content:
            flash('Please select a player and enter note content.', 'danger')
            return redirect(url_for('users.manage_personal_notes'))

        # Verify player is on coach's team
        if org_team and player_id not in [p.id for p in players]:
            flash('You can only add notes for players on your team.', 'danger')
            return redirect(url_for('users.manage_personal_notes'))

        note = PersonalNote(
            player_id=player_id,
            coach_id=current_user.id,
            content=content
        )
        db.session.add(note)
        db.session.commit()
        flash('Personal note added successfully!', 'success')
        return redirect(url_for('users.manage_personal_notes'))

    # Get all personal notes for players on this team
    personal_notes = []
    if org_team:
        personal_notes = PersonalNote.query.filter(
            PersonalNote.player_id.in_([p.id for p in players])
        ).order_by(PersonalNote.created_at.desc()).all()

    return render_template('pages/personal_notes.html',
                          players=players,
                          personal_notes=personal_notes,
                          org_team=org_team)


# Note source types for filtering
NOTE_SOURCE_MATCH = 'match'
NOTE_SOURCE_TRYOUT = 'tryout'
NOTE_SOURCE_TEAM = 'team'


@users_bp.route('/my-notes')
@login_required
def my_notes():
    """View all notes for the current player.

    Shows both personal notes and team notes that the player has received.
    Personal notes are grouped by source (match, tryout, team).

    Returns:
        Response: Rendered my notes template.
    """
    if current_user.role != 'player':
        flash('Only players can view their notes.', 'danger')
        return redirect(url_for('main.dashboard'))

    # Get player's team and coach
    org_team = OrgTeam.query.get(current_user.team_id) if current_user.team_id else None

    # Get all personal notes for this player with eager loading for relationships
    personal_notes = PersonalNote.query.filter_by(player_id=current_user.id).order_by(PersonalNote.created_at.desc()).all()

    # Get team notes for this player's team
    team_notes = []
    if org_team:
        team_notes = TeamNote.query.filter_by(org_team_id=org_team.id).order_by(TeamNote.created_at.desc()).all()

    return render_template('pages/player_personal_notes.html',
                          org_team=org_team,
                          personal_notes=personal_notes,
                          team_notes=team_notes)


@users_bp.route('/notes/add', methods=['GET', 'POST'])
@login_required
def add_personal_note():
    """Add a personal note with optional context (for coaches and managers).

    GET: Render the note creation form.
    POST: Create a personal note, optionally linked to match/tryout/team.

    Returns:
        Response: Create form or redirect to notes view.
    """
    if current_user.role not in ['coach', 'manager', 'president']:
        flash('Only coaches and managers can add notes.', 'danger')
        return redirect(url_for('main.dashboard'))

    # Get players this user can manage
    players = []
    org_team = None
    if current_user.role == 'coach':
        org_team = OrgTeam.query.filter_by(coach_id=current_user.id).first()
        if org_team:
            players = User.query.filter_by(role='player', team_id=org_team.id).order_by(User.full_name).all()
    elif current_user.role in ['president', 'manager']:
        players = User.query.filter_by(role='player').order_by(User.full_name).all()

    # Get available matches and tryouts for context
    matches = []
    tryouts = []
    teams = []
    if current_user.role == 'coach' and org_team:
        tryouts = Tryout.query.filter_by(target_org_team_id=org_team.id).order_by(Tryout.date.desc()).all()
        matches = Match.query.join(Tryout).filter(Tryout.target_org_team_id == org_team.id).order_by(Match.date.desc()).all()
    elif current_user.role in ['president', 'manager']:
        tryouts = Tryout.query.order_by(Tryout.date.desc()).all()
        matches = Match.query.order_by(Match.date.desc()).all()
    teams = Team.query.order_by(Team.name).all()

    if request.method == 'POST':
        player_id = request.form.get('player_id', type=int)
        content = request.form.get('content', '').strip()
        match_id = request.form.get('match_id', type=int)
        tryout_id = request.form.get('tryout_id', type=int)
        team_id = request.form.get('team_id', type=int)

        if not player_id or not content:
            flash('Please select a player and enter note content.', 'danger')
            return redirect(url_for('users.add_personal_note'))

        # Verify player is on coach's team (if coach)
        if current_user.role == 'coach' and org_team and player_id not in [p.id for p in players]:
            flash('You can only add notes for players on your team.', 'danger')
            return redirect(url_for('users.add_personal_note'))

        # Validate context - ensure coach can access the match/tryout/team
        if match_id:
            match = Match.query.get(match_id)
            match_tryout = None
            if match:
                match_tryout = Tryout.query.get(match.tryout_id)
                if match_tryout and match_tryout.target_org_team_id and match_tryout.target_org_team_id != org_team.id:
                    flash('You can only add notes for matches in your team\'s tryouts.', 'danger')
                    return redirect(url_for('users.add_personal_note'))
        if tryout_id and org_team:
            tryout = Tryout.query.get(tryout_id)
            if tryout and tryout.target_org_team_id and tryout.target_org_team_id != org_team.id:
                flash('You can only add notes for your team\'s tryouts.', 'danger')
                return redirect(url_for('users.add_personal_note'))
        if team_id and org_team:
            team = Team.query.get(team_id)
            if team:
                tryout = Tryout.query.get(team.tryout_id)
                if tryout and tryout.target_org_team_id and tryout.target_org_team_id != org_team.id:
                    flash('You can only add notes for your team\'s tryouts.', 'danger')
                    return redirect(url_for('users.add_personal_note'))

        note = PersonalNote(
            player_id=player_id,
            coach_id=current_user.id,
            content=content,
            match_id=match_id if match_id else None,
            team_id=team_id if team_id else None,
            tryout_id=tryout_id if tryout_id else None
        )
        db.session.add(note)
        db.session.commit()
        flash('Personal note added successfully!', 'success')
        return redirect(url_for('users.my_notes'))

    return render_template('pages/add_personal_note.html',
                          players=players,
                          matches=matches,
                          tryouts=tryouts,
                          teams=teams,
                          org_team=org_team)


@users_bp.route('/match/<int:match_id>/add-note', methods=['GET', 'POST'])
@login_required
def add_note_from_match(match_id):
    """Add a personal note from a match view context (for coaches).

    GET: Render the note creation form pre-filled with match info.
    POST: Create a personal note linked to the match.

    Args:
        match_id: The ID of the match to create note for.

    Returns:
        Response: Create form or redirect.
    """
    if current_user.role not in ['coach', 'manager', 'president']:
        flash('Only coaches can add notes from matches.', 'danger')
        return redirect(url_for('main.dashboard'))

    match = Match.query.get_or_404(match_id)
    tryout = Tryout.query.get(match.tryout_id)

    # Check permissions
    if current_user.role == 'coach':
        org_team = OrgTeam.query.filter_by(coach_id=current_user.id).first()
        if not org_team or (tryout.target_org_team_id and tryout.target_org_team_id != org_team.id):
            flash('You do not have permission for this match.', 'danger')
            return redirect(url_for('matches.calendar'))

    # Get all participants for this match
    participant_ids = []
    if match.match_type == 'team_vs_team':
        if match.team1_id:
            team_members = TeamMember.query.filter_by(team_id=match.team1_id).all()
            participant_ids.extend([m.player_id for m in team_members])
        if match.team2_id:
            team_members = TeamMember.query.filter_by(team_id=match.team2_id).all()
            participant_ids.extend([m.player_id for m in team_members])
    else:
        participants = MatchParticipant.query.filter_by(match_id=match_id).all()
        participant_ids = [p.player_id for p in participants]

    players = User.query.filter(User.id.in_(participant_ids)).order_by(User.full_name).all() if participant_ids else []

    # Get team notes for context
    team_notes = []
    if tryout and tryout.target_org_team_id:
        team_notes = TeamNote.query.filter_by(org_team_id=tryout.target_org_team_id).order_by(TeamNote.created_at.desc()).all()

    if request.method == 'POST':
        player_id = request.form.get('player_id', type=int)
        content = request.form.get('content', '').strip()

        if not player_id or not content:
            flash('Please select a player and enter note content.', 'danger')
        elif player_id not in participant_ids:
            flash('Selected player is not in this match.', 'danger')
        else:
            note = PersonalNote(
                player_id=player_id,
                coach_id=current_user.id,
                content=content,
                match_id=match_id
            )
            db.session.add(note)
            db.session.commit()
            flash('Personal note added successfully!', 'success')
            return redirect(url_for('tryouts.view_tryout', tryout_id=tryout.id))

    return render_template('pages/add_note_from_match.html',
                          match=match,
                          tryout=tryout,
                          players=players,
                          team_notes=team_notes)


@users_bp.route('/tryout/<int:tryout_id>/add-note', methods=['GET', 'POST'])
@login_required
def add_note_from_tryout(tryout_id):
    """Add a personal note from a tryout view context (for coaches).

    GET: Render the note creation form pre-filled with tryout info.
    POST: Create a personal note linked to the tryout.

    Args:
        tryout_id: The ID of the tryout to create note for.

    Returns:
        Response: Create form or redirect.
    """
    if current_user.role not in ['coach', 'manager', 'president']:
        flash('Only coaches can add notes from tryouts.', 'danger')
        return redirect(url_for('main.dashboard'))

    tryout = Tryout.query.get_or_404(tryout_id)

    # Check permissions
    if current_user.role == 'coach':
        org_team = OrgTeam.query.filter_by(coach_id=current_user.id).first()
        if not org_team or (tryout.target_org_team_id and tryout.target_org_team_id != org_team.id):
            flash('You do not have permission for this tryout.', 'danger')
            return redirect(url_for('tryouts.list_tryouts'))

    # Get all registered players in this tryout
    registrations = TryoutRegistration.query.filter_by(tryout_id=tryout_id).all()
    player_ids = [r.player_id for r in registrations]
    
    # If coach, filter to only their team players
    if current_user.role == 'coach' and org_team:
        players = User.query.filter(User.id.in_(player_ids), User.team_id == org_team.id).order_by(User.full_name).all()
    else:
        players = User.query.filter(User.id.in_(player_ids)).order_by(User.full_name).all()

    # Get team notes for context
    team_notes = []
    if tryout.target_org_team_id:
        team_notes = TeamNote.query.filter_by(org_team_id=tryout.target_org_team_id).order_by(TeamNote.created_at.desc()).all()

    if request.method == 'POST':
        player_id = request.form.get('player_id', type=int)
        content = request.form.get('content', '').strip()

        if not player_id or not content:
            flash('Please select a player and enter note content.', 'danger')
        elif player_id not in [p.id for p in players]:
            flash('Selected player is not registered for this tryout.', 'danger')
        else:
            note = PersonalNote(
                player_id=player_id,
                coach_id=current_user.id,
                content=content,
                tryout_id=tryout_id
            )
            db.session.add(note)
            db.session.commit()
            flash('Personal note added successfully!', 'success')
            return redirect(url_for('tryouts.view_tryout', tryout_id=tryout_id))

    return render_template('pages/add_note_from_tryout.html',
                          tryout=tryout,
                          players=players,
                          team_notes=team_notes)