from flask import Blueprint, jsonify, request
from ..models import Project, Deliverable
from ..extensions import db
from datetime import date, datetime, timezone

projects_bp = Blueprint('projects', __name__)


@projects_bp.route('/projects', methods=['GET'])
def get_projects():
    projects = Project.query.order_by(Project.created_at.desc()).all()
    return jsonify([p.to_dict() for p in projects])


@projects_bp.route('/projects/<int:id>', methods=['GET'])
def get_project(id):
    project = Project.query.get_or_404(id)
    return jsonify(project.to_dict())


@projects_bp.route('/projects', methods=['POST'])
def create_project():
    data = request.get_json()
    project = Project(
        name=data['name'],
        color=data.get('color', '#C9A84C'),
        description=data.get('description', ''),
        drive_url=data.get('drive_url', ''),
    )
    db.session.add(project)
    db.session.flush()

    for d in data.get('deliverables', []):
        if d.get('title') and d.get('due_date'):
            db.session.add(Deliverable(
                project_id=project.id,
                title=d['title'],
                due_date=date.fromisoformat(d['due_date']),
                status=d.get('status', 'upcoming'),
            ))

    db.session.commit()
    return jsonify(project.to_dict()), 201


@projects_bp.route('/projects/<int:id>', methods=['PATCH'])
def update_project(id):
    project = Project.query.get_or_404(id)
    data = request.get_json()
    for field in ('name', 'color', 'description', 'drive_url'):
        if field in data:
            setattr(project, field, data[field])
    db.session.commit()
    return jsonify(project.to_dict())


@projects_bp.route('/projects/<int:id>/archive', methods=['PATCH'])
def archive_project(id):
    project = Project.query.get_or_404(id)
    project.archived_at = datetime.now(timezone.utc)
    db.session.commit()
    return jsonify(project.to_dict())


@projects_bp.route('/projects/<int:id>/unarchive', methods=['PATCH'])
def unarchive_project(id):
    project = Project.query.get_or_404(id)
    project.archived_at = None
    db.session.commit()
    return jsonify(project.to_dict())


@projects_bp.route('/projects/<int:id>', methods=['DELETE'])
def delete_project(id):
    project = Project.query.get_or_404(id)
    db.session.delete(project)
    db.session.commit()
    return jsonify({'message': 'Project deleted'}), 200