import os
import sys
from flaskext.genshi import Genshi, render_response
from flask import Flask,request,url_for,redirect

studio = Flask(__name__)
studio.debug = True
genshi = Genshi(studio)

def shutdown_server():
    func = request.environ.get('werkzeug.server.shutdown')
    if func is None:
        raise RuntimeError('Not running with the Werkzeug Server')
    func()

def list_files(directory):
    files=os.listdir(directory)
    print "showing %s" % directory
    return files 

def identify(filename):
    icon = 'document-generic.png'
    mode = ''
    directory=os.path.dirname(filename) 
    icon = 'document-generic.png'
    href = '/edit/%s' % filename
    if filename.endswith('.py'):
        icon = 'text-x-python.png'
        mode = 'python'
    if filename.endswith('.html'):
        icon = 'text-uri-list.png'
        mode = 'html'
    if filename.endswith('.css'):
        icon = 'text-uri-list.png'
        mode = 'css'
    if filename.endswith('.js'):
        icon = 'text-uri-list.png'
        mode = 'javascript'
    if os.path.isdir(filename):
        icon = 'folder.png'
        href = '/files/%s' % filename 
    if filename.endswith('.xo'):
        href = '#'
    return icon,mode,href

@studio.route('/')
def index():
    port = request.environ.get('SERVER_PORT')
    return render_response('index.html', dict(name="WebSDK Activity",
                                            port=port))

@studio.route('/edit/')
@studio.route('/edit/<path:filename>')
def edit(filename="activity.py"):
    icon, mode, href = identify(filename)
    content = open(filename).read().decode('utf-8') 
    tmpl = 'editor.html'
    directory=os.path.dirname(filename) 
    return render_response(tmpl, dict(content=content, icon=icon,basename=os.path.basename(filename),
            filename=filename, absdir=os.path.normpath(directory), mode=mode, directory=directory))

@studio.route('/save', methods=['POST'])
def save(): 
    filename = request.form['filename']
    f=open(filename,"wb")
    content = request.form['content']
    content = content.replace('\r\n', '\n').replace('\r', '\n') # HACK - Ace seems to be confused about newlines
    f.write(content.encode('utf-8'))
    print "saving content: %s" % filename 
    f.close()
    directory = os.path.dirname(filename)
    return redirect(url_for('browse', directory=directory))

@studio.route('/files/')
@studio.route('/files/<path:directory>')
def browse(directory="."):
    filelist = list_files(directory)
    files = []
    if not os.path.abspath(directory)==os.path.abspath("."):
        files.append( { 'name': '..',
                        'icon': 'folder.png',
                        'href': '/files/%s' % os.path.join(directory,"..") })
    for filename in sorted(filelist):
        icon, mode, href = identify(directory + "/" + filename)
        if filename.startswith('.'): #hidden files
            continue
        if filename.endswith('.pyc'): #lets avoid confusion
            continue
        files.append( { 'name': filename,
                        'icon': icon,
                        'href': href } )
    return render_response('filer.html', dict(files=files, absdir=os.path.normpath(directory)))

@studio.route('/delete/<path:filename>')
def delete(filename):
    os.unlink(filename)
    directory = os.path.dirname(filename)
    return redirect(url_for('browse', directory=directory))

@studio.route('/shutdown')
def shutdown():
    shutdown_server()
    return 'Goodbye'

def vsplit(frame1='/files/studio', frame2='/files/studio/templates'):
    return render_response('split-view.html', dict(frame1=frame1, frame2=frame2))

@studio.route('/split')
def split():
    return vsplit()

@studio.route('/debug')
def debug():
    raise Warning("Welcome to the debugger. Note an interactive interpreter is available at each line. You may raise an exception at any time in your controller to examine its environment.") 

if __name__=="__main__":
    try:
        port=int(sys.argv[1])
    except IndexError:
        port=5000
        import webbrowser
        webbrowser.open("http://localhost:%s/" % port)
    studio.run(port=port) # for local only
    #studio.run(host='0.0.0.0', port=port) # open for all