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

app = Flask(__name__)
app.debug = True
app.secret_key="ilovesugar"
genshi = Genshi(app)

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 sorted(files)

def identify(filename):
    if not os.path.exists(filename):
        raise ValueError('File not found')
    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 
        mode = 'dir'
    if filename.endswith('.xo'):
        href = '#'
    return icon,mode,href

@app.route('/')
def index():
    try:
        directory=session['pwd']
    except KeyError:
        directory=u""
    return vsplit(frame2="/files/%s" % directory)

@app.route('/edit/')
@app.route('/edit/<path:filename>')
def edit(filename):
    try:
        if len(session['edit_history'])==6:
            session['edit_history'].pop(0)
        if not filename in session['edit_history']:
            session['edit_history'].append(filename)
    except KeyError:
        session['edit_history']=[filename,]
    session.modified = True
    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))

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

@app.route('/chdir', methods=['POST'])
def chdir():
    if request.form['oldproject']!='':
        session['project_dir']=os.getenv('HOME')+'/Activities/'+request.form['oldproject']
        with open(session['project_dir']+"/activity/activity.info", 'r') as f:
            for line in f:
                if line.startswith('name'):
                    session['project_name']=line[7:-1]
        session['pwd']=session['project_home_dir']="."
        os.chdir(session['project_dir'])
        session['project_home']='/help'
        #session['edit_history']=[]
        if os.path.isdir('app'):
            session['pwd']=session['project_home_dir']='app'
            session['project_home']='/edit/app/app.py'
        elif os.path.isfile('activity.py'):
            session['project_home']='/edit/activity.py'
    return vsplit(frame1=session['project_home'],
                  frame2='/files/%s' % session['pwd'])

@app.route('/fileshome/')
def browse_home():
    try:
        home_dir = session['project_home_dir']
    except KeyError:
        home_dir = "."
    return browse(home_dir)

@app.route('/files/')
@app.route('/files/<path:directory>')
def browse(directory='.'):
    session['pwd']=directory
        
    filelist = list_files(directory)
    try:
        session['project_dir']
    except KeyError:
        filelist=[]
    files = []
    if not os.path.abspath(directory)==os.path.abspath("."):
        files.append( { 'name': '..',
                        'icon': 'folder.png',
                        'mode': 'dir',
                        '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 ignore these
            continue
        files.append( { 'name': filename,
                        'icon': icon,
                        'mode': mode,
                        'href': href } )
    try:
        project_name=session['project_name']
    except KeyError:
        project_name='None';
    return render_response('filer.html', dict(files=files, 
                absdir=os.path.normpath(directory),
                width=len(files)*94+10,# 94px is each file and 10px margin
                project_name=project_name
                ))
                
@app.route('/delete/<path:filename>')
def delete(filename):
    os.unlink(filename)
    directory = os.path.dirname(filename)
    return help()

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

@app.route('/help')
def help():
    port=request.environ.get('SERVER_PORT')
    files=list_files(os.getenv('HOME')+'/Activities')
    activities = []
    for file in files:
        if file.endswith("activity"):
            activities.append(file)
    files = []
    try:
        for filename in session['edit_history']:
            icon, mode, href = identify(filename)
            files.append( { 'name': os.path.basename(filename),
                            'icon': icon,
                            'mode': mode,
                            'href': href } )
    except:
        pass
    try:
        project_name=session['project_name']
    except KeyError:
        project_name='None';
    
    return render_response('help.html', dict(port=port, 
                                            activities=activities,
                                            project_name=project_name,
                                            edit_history=files))

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

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

@app.route('/debug')
def debug():
    raise Warning("This is a traceback of the Construct IDE environment. This is what you'll see when there's an error in your program or you manually raise an exception.") 

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