import os
from flask import Flask, render_template, abort, jsonify, request
from comics_data import COMICS, FULL_WIDTH_DEFAULT, PLAIN_DEFAULT

app = Flask(__name__)

# Configuration
app.config['SECRET_KEY'] = os.environ.get('SECRET_KEY', 'your-secret-key')


def is_full_width(comic):
    """Determine if a comic should be full width based on global and per-comic settings"""
    # If comic explicitly sets full_width, use that value
    if 'full_width' in comic:
        return comic['full_width']
    # Otherwise use the global default
    return FULL_WIDTH_DEFAULT


def is_plain(comic):
    """Determine if a comic should be plain mode based on global and per-comic settings"""
    # If comic explicitly sets plain, use that value
    if 'plain' in comic:
        return comic['plain']
    # Otherwise use the global default
    return PLAIN_DEFAULT


def enrich_comic(comic):
    """Add computed properties to comic data"""
    if comic is None:
        return None
    enriched = comic.copy()
    enriched['full_width'] = is_full_width(comic)
    enriched['plain'] = is_plain(comic)
    return enriched


def get_comic_by_number(number):
    """Get a comic by its number"""
    for comic in COMICS:
        if comic['number'] == number:
            return enrich_comic(comic)
    return None


def get_latest_comic():
    """Get the most recent comic"""
    if COMICS:
        return enrich_comic(COMICS[-1])
    return None


@app.route('/')
def index():
    """Home page - shows latest comic"""
    comic = get_latest_comic()
    if not comic:
        return render_template('index.html', title='Latest Comic',
                             comic=None, total_comics=0)
    return render_template('index.html', title='Latest Comic',
                         comic=comic, total_comics=len(COMICS))


@app.route('/comic/<int:comic_id>')
def comic(comic_id):
    """View a specific comic"""
    comic = get_comic_by_number(comic_id)
    if not comic:
        abort(404)
    return render_template('comic.html', title=f"Comic #{comic_id}",
                         comic=comic, total_comics=len(COMICS))


@app.route('/archive')
def archive():
    """Archive page showing all comics"""
    # Reverse order to show newest first
    comics = [enrich_comic(comic) for comic in reversed(COMICS)]
    return render_template('archive.html', title='Archive',
                         comics=comics)


@app.route('/about')
def about():
    """About page"""
    return render_template('about.html', title='About')


@app.route('/api/comics')
def api_comics():
    """API endpoint - returns all comics as JSON"""
    return jsonify([enrich_comic(comic) for comic in COMICS])


@app.route('/api/comics/<int:comic_id>')
def api_comic(comic_id):
    """API endpoint - returns a specific comic as JSON"""
    comic = get_comic_by_number(comic_id)
    if not comic:
        return jsonify({'error': 'Comic not found'}), 404
    return jsonify(comic)


@app.errorhandler(404)
def page_not_found(e):
    """404 error handler"""
    # Return JSON for API requests
    if request.path.startswith('/api/'):
        return jsonify({'error': 'Not found'}), 404
    # Return HTML for regular pages
    return render_template('404.html', title='Page Not Found'), 404


if __name__ == '__main__':
    port = int(os.environ.get('PORT', 3000))
    debug = os.environ.get('DEBUG', 'False').lower() in ('true', '1', 't')
    app.run(debug=debug, port=port)