"""Organization team management routes.

This module handles CRUD operations for organization teams and player assignments.
"""

from flask import Blueprint, render_template, redirect, url_for, flash, request, jsonify
from flask_login import login_required, current_user
from extensions import db
from models import OrgTeam, User, Team, TeamMember, PersonalNote, TeamNote, Tryout, TeamPlayer

teams_bp = Blueprint('teams', __name__, url_prefix='/teams')


@teams_bp.route('')
@login_required
def list_teams():
    """List all organization teams visible to the current user.
    
    Coaches and managers see only their assigned teams. 
    President sees all teams.
    
    Returns:
        Response: Rendered teams list template.
    """
    can_manage = current_user.can_manage_teams()
    
    if current_user.role == 'coach':
        teams = OrgTeam.query.filter(
            db.or_(
                OrgTeam.coaches.any(id=current_user.id),
                OrgTeam.coach_id == current_user.id
            )
        ).order_by(OrgTeam.name).all()
    elif current_user.role == 'manager':
        teams = OrgTeam.query.filter(
            db.or_(
                OrgTeam.managers.any(id=current_user.id),
                OrgTeam.manager_id == current_user.id
            )
        ).order_by(OrgTeam.name).all()
    elif current_user.role in ['player', 'scout']:
        flash('Use My Team(s) to view your teams.', 'info')
        return redirect(url_for('teams.my_teams'))
    else:
        flash('You do not have permission to view teams.', 'danger')
        return redirect(url_for('main.dashboard'))

    coaches = User.query.filter_by(role='coach', is_active_account=True).order_by(User.username).all()
    managers = User.query.filter_by(role='manager', is_active_account=True).order_by(User.username).all()
    all_players = User.query.filter_by(role='player').order_by(User.username).all()
    return render_template('pages/teams.html', teams=teams, coaches=coaches, managers=managers, all_players=all_players, can_manage=can_manage)


@teams_bp.route('/my-teams')
@login_required
def my_teams():
    """View the player's own teams with upcoming matches.

    Players can see their team rosters, coaches, managers, and
    upcoming team matches with presence confirmation toggles.

    Returns:
        Response: Rendered my_teams template.
    """
    if current_user.role != 'player':
        flash('This page is for players.', 'info')
        return redirect(url_for('teams.list_teams'))

    from models import TeamMatch, TeamMatchParticipant
    from datetime import datetime

    player_teams = current_user.get_org_teams()

    team_data = []
    now = datetime.utcnow()
    for org_team in player_teams:
        matches = TeamMatch.query.filter(
            TeamMatch.org_team_id == org_team.id,
            TeamMatch.status == 'scheduled'
        ).order_by(TeamMatch.date.asc(), TeamMatch.start_time.asc()).all()

        matches_data = []
        for tm in matches:
            confirmed, total = tm.get_confirmed_count()
            participant = TeamMatchParticipant.query.filter_by(
                team_match_id=tm.id,
                player_id=current_user.id
            ).first()
            matches_data.append({
                'match': tm,
                'participant_id': participant.id if participant else None,
                'is_confirmed': participant.is_confirmed if participant else False,
                'confirmed_count': confirmed,
                'total_count': total
            })

        team_data.append({
            'team': org_team,
            'matches': matches_data,
            'coaches': org_team.get_coaches(),
            'managers': org_team.get_managers()
        })

    return render_template('pages/my_teams.html',
                         team_data=team_data,
                         now=now)


@teams_bp.route('/create', methods=['POST'])
@login_required
def create_team():
    """Create a new organization team.
    
    Args:
        name: Team name from form.
        coach_id: Optional coach assignment from form.
        manager_id: Optional manager assignment from form.
        
    Returns:
        Response: Redirect to teams list with status message.
    """
    if not current_user.can_manage_teams():
        flash('You do not have permission to create teams.', 'danger')
        return redirect(url_for('teams.list_teams'))

    name = request.form.get('name')
    coach_id = request.form.get('coach_id')
    manager_id = request.form.get('manager_id')

    if not name:
        flash('Team name is required.', 'danger')
        return redirect(url_for('teams.list_teams'))

    existing = OrgTeam.query.filter_by(name=name).first()
    if existing:
        flash(f'Team "{name}" already exists.', 'danger')
        return redirect(url_for('teams.list_teams'))

    team = OrgTeam(
        name=name,
        coach_id=int(coach_id) if coach_id else None,
        manager_id=int(manager_id) if manager_id else None,
        created_by=current_user.id
    )
    db.session.add(team)
    db.session.flush()
    
    if coach_id:
        coach_user = User.query.get(int(coach_id))
        if coach_user:
            team.coaches.append(coach_user)
    if manager_id:
        manager_user = User.query.get(int(manager_id))
        if manager_user:
            team.managers.append(manager_user)
    
    db.session.commit()
    flash(f'Team "{name}" created successfully!', 'success')
    return redirect(url_for('teams.list_teams'))


@teams_bp.route('/<int:team_id>/edit', methods=['POST'])
@login_required
def edit_team(team_id):
    """Edit an existing organization team."""
    team = OrgTeam.query.get_or_404(team_id)
    if not current_user.can_manage_this_org_team(team):
        flash('You do not have permission to edit this team.', 'danger')
        return redirect(url_for('teams.list_teams'))

    name = request.form.get('name')
    coach_id = request.form.get('coach_id')
    manager_id = request.form.get('manager_id')

    if not name:
        flash('Team name is required.', 'danger')
        return redirect(url_for('teams.list_teams'))

    existing = OrgTeam.query.filter(OrgTeam.name == name, OrgTeam.id != team_id).first()
    if existing:
        flash(f'Team "{name}" already exists.', 'danger')
        return redirect(url_for('teams.list_teams'))

    team.name = name
    team.coach_id = int(coach_id) if coach_id else None
    team.manager_id = int(manager_id) if manager_id else None
    
    if coach_id:
        coach_user = User.query.get(int(coach_id))
        if coach_user and not team.coaches.filter_by(id=coach_user.id).first():
            team.coaches.append(coach_user)
    if manager_id:
        manager_user = User.query.get(int(manager_id))
        if manager_user and not team.managers.filter_by(id=manager_user.id).first():
            team.managers.append(manager_user)
    
    db.session.commit()
    flash(f'Team "{name}" updated successfully!', 'success')
    return redirect(url_for('teams.list_teams'))


@teams_bp.route('/<int:team_id>/delete', methods=['POST'])
@login_required
def delete_team(team_id):
    """Delete an organization team."""
    if not current_user.can_manage_teams():
        flash('You do not have permission to delete teams.', 'danger')
        return redirect(url_for('teams.list_teams'))

    team = OrgTeam.query.get_or_404(team_id)
    name = team.name

    from models import Tryout
    tryouts = Tryout.query.filter_by(target_org_team_id=team_id).all()
    if tryouts:
        for t in tryouts:
            t.target_org_team_id = None
        db.session.commit()

    TeamPlayer.query.filter_by(org_team_id=team_id).delete()
    db.session.commit()

    db.session.delete(team)
    db.session.commit()
    flash(f'Team "{name}" deleted successfully.', 'success')
    return redirect(url_for('teams.list_teams'))


@teams_bp.route('/<int:team_id>/add_coach', methods=['POST'])
@login_required
def add_coach(team_id):
    """Add a coach to an organization team (many-to-many)."""
    team = OrgTeam.query.get_or_404(team_id)
    if not current_user.can_manage_this_org_team(team):
        flash('Permission denied.', 'danger')
        return redirect(url_for('teams.list_teams'))
    
    coach_id = request.form.get('coach_id')
    if not coach_id:
        flash('Please select a coach.', 'danger')
        return redirect(url_for('teams.list_teams'))
    
    coach = User.query.get_or_404(int(coach_id))
    if coach.role != 'coach':
        flash('Only coaches can be assigned as coach.', 'danger')
        return redirect(url_for('teams.list_teams'))
    
    if team.coaches.filter_by(id=coach.id).first():
        flash(f'{coach.username} is already a coach of {team.name}.', 'info')
        return redirect(url_for('teams.list_teams'))
    
    team.coaches.append(coach)
    if not team.coach_id:
        team.coach_id = coach.id
    db.session.commit()
    flash(f'{coach.username} added as coach of {team.name}.', 'success')
    return redirect(url_for('teams.list_teams'))


@teams_bp.route('/<int:team_id>/add_manager', methods=['POST'])
@login_required
def add_manager(team_id):
    """Add a manager to an organization team (many-to-many)."""
    team = OrgTeam.query.get_or_404(team_id)
    if not current_user.can_manage_this_org_team(team):
        flash('Permission denied.', 'danger')
        return redirect(url_for('teams.list_teams'))
    
    manager_id = request.form.get('manager_id')
    if not manager_id:
        flash('Please select a manager.', 'danger')
        return redirect(url_for('teams.list_teams'))
    
    manager = User.query.get_or_404(int(manager_id))
    if manager.role != 'manager':
        flash('Only managers can be assigned as manager.', 'danger')
        return redirect(url_for('teams.list_teams'))
    
    if team.managers.filter_by(id=manager.id).first():
        flash(f'{manager.username} is already a manager of {team.name}.', 'info')
        return redirect(url_for('teams.list_teams'))
    
    team.managers.append(manager)
    if not team.manager_id:
        team.manager_id = manager.id
    db.session.commit()
    flash(f'{manager.username} added as manager of {team.name}.', 'success')
    return redirect(url_for('teams.list_teams'))


@teams_bp.route('/<int:team_id>/remove_coach', methods=['POST'])
@login_required
def remove_coach(team_id):
    """Remove a coach from an organization team."""
    team = OrgTeam.query.get_or_404(team_id)
    if not current_user.can_manage_this_org_team(team):
        flash('Permission denied.', 'danger')
        return redirect(url_for('teams.list_teams'))
    
    coach_id = request.form.get('coach_id')
    if coach_id:
        coach = User.query.get(int(coach_id))
        if coach and team.coaches.filter_by(id=coach.id).first():
            team.coaches.remove(coach)
            if team.coach_id == coach.id:
                team.coach_id = None
    else:
        team.coaches = []
        team.coach_id = None
    
    db.session.commit()
    flash(f'Coach removed from {team.name}.', 'success')
    return redirect(url_for('teams.list_teams'))


@teams_bp.route('/<int:team_id>/remove_manager', methods=['POST'])
@login_required
def remove_manager(team_id):
    """Remove a manager from an organization team."""
    team = OrgTeam.query.get_or_404(team_id)
    if not current_user.can_manage_this_org_team(team):
        flash('Permission denied.', 'danger')
        return redirect(url_for('teams.list_teams'))
    
    manager_id = request.form.get('manager_id')
    if manager_id:
        manager = User.query.get(int(manager_id))
        if manager and team.managers.filter_by(id=manager.id).first():
            team.managers.remove(manager)
            if team.manager_id == manager.id:
                team.manager_id = None
    else:
        team.managers = []
        team.manager_id = None
    
    db.session.commit()
    flash(f'Manager removed from {team.name}.', 'success')
    return redirect(url_for('teams.list_teams'))


@teams_bp.route('/<int:team_id>/add_player', methods=['POST'])
@login_required
def add_player(team_id):
    """Add a player to an organization team."""
    team = OrgTeam.query.get_or_404(team_id)
    if not current_user.can_manage_this_org_team(team):
        flash('Permission denied.', 'danger')
        return redirect(url_for('teams.list_teams'))
    player_id = request.form.get('player_id')
    status = request.form.get('status', 'starter')

    if not player_id:
        flash('Please select a player.', 'danger')
        return redirect(url_for('teams.list_teams'))

    player = User.query.get_or_404(int(player_id))
    if player.role != 'player':
        flash('Can only assign players to teams.', 'danger')
        return redirect(url_for('teams.list_teams'))

    existing = TeamPlayer.query.filter_by(player_id=player.id, org_team_id=team.id).first()
    if existing:
        flash(f'{player.username} is already on {team.name}.', 'info')
        return redirect(url_for('teams.list_teams'))

    tp = TeamPlayer(
        player_id=player.id,
        org_team_id=team.id,
        status=status
    )
    db.session.add(tp)
    db.session.commit()
    flash(f'{player.username} added to {team.name}!', 'success')
    return redirect(url_for('teams.list_teams'))


@teams_bp.route('/<int:team_id>/remove_player/<int:player_id>', methods=['POST'])
@login_required
def remove_player(team_id, player_id):
    """Remove a player from an organization team."""
    team = OrgTeam.query.get_or_404(team_id)
    if not current_user.can_manage_this_org_team(team):
        flash('Permission denied.', 'danger')
        return redirect(url_for('teams.list_teams'))

    player = User.query.get_or_404(player_id)

    tp = TeamPlayer.query.filter_by(player_id=player_id, org_team_id=team_id).first()
    if not tp:
        flash(f'{player.username} is not on {team.name}.', 'danger')
        return redirect(url_for('teams.list_teams'))

    db.session.delete(tp)
    db.session.commit()
    flash(f'{player.username} removed from {team.name}.', 'success')
    return redirect(url_for('teams.list_teams'))


@teams_bp.route('/<int:team_id>/toggle_status/<int:player_id>', methods=['POST'])
@login_required
def toggle_player_status(team_id, player_id):
    """Toggle a player's status between starter and substitute."""
    team = OrgTeam.query.get_or_404(team_id)
    if not current_user.can_manage_this_org_team(team):
        return jsonify({'error': 'Permission denied'}), 403

    tp = TeamPlayer.query.filter_by(player_id=player_id, org_team_id=team_id).first()
    if not tp:
        return jsonify({'error': 'Player not found on this team'}), 404

    tp.status = 'substitute' if tp.status == 'starter' else 'starter'
    db.session.commit()

    return jsonify({
        'success': True,
        'player_id': player_id,
        'new_status': tp.status,
        'player_name': tp.player.username
    })


@teams_bp.route('/<int:team_id>/add-team-note', methods=['POST'])
@login_required
def add_team_note(team_id):
    """Add a team improvement note from the team page (for coaches)."""
    team = OrgTeam.query.get_or_404(team_id)
    
    if not current_user.can_manage_this_org_team(team):
        flash('You do not have permission to add notes to this team.', 'danger')
        return redirect(url_for('teams.list_teams'))

    content = request.form.get('content', '').strip()

    if content:
        note = TeamNote(
            org_team_id=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('teams.list_teams'))


@teams_bp.route('/<int:team_id>/add-player-note/<int:player_id>', methods=['POST'])
@login_required
def add_player_note(team_id, player_id):
    """Add a personal note for a player from the team page (for coaches)."""
    team = OrgTeam.query.get_or_404(team_id)
    
    if not current_user.can_manage_this_org_team(team):
        flash('You do not have permission to add notes to this team.', 'danger')
        return redirect(url_for('teams.list_teams'))
    
    player = User.query.get_or_404(player_id)
    if player.role != 'player':
        flash('Can only add notes for players.', 'danger')
        return redirect(url_for('teams.list_teams'))

    tp = TeamPlayer.query.filter_by(player_id=player_id, org_team_id=team_id).first()
    if not tp:
        flash(f'{player.username} is not on {team.name}.', 'danger')
        return redirect(url_for('teams.list_teams'))

    content = request.form.get('content', '').strip()

    if content:
        note = PersonalNote(
            player_id=player_id,
            coach_id=current_user.id,
            content=content
        )
        db.session.add(note)
        db.session.commit()
        flash(f'Note added for {player.username}!', 'success')

    return redirect(url_for('teams.list_teams'))