#!bin/python

"""
now launches like this:
% bin/curvecalc http://light9.bigasterisk.com/show/dance2007/song1



todo: curveview should preserve more objects, for speed maybe

"""
from __future__ import division

from twisted.internet import gtk2reactor
gtk2reactor.install()
from twisted.internet import reactor

import time, textwrap, os, optparse, urllib2, gtk, gobject, linecache
import louie as dispatcher 
from twisted.python.util import sibpath
from rdflib import URIRef
from rdflib import Graph
import rdflib
import logging
log = logging.getLogger()

import run_local
from light9 import showconfig, prof
from light9.curvecalc.zoomcontrol import Zoomcontrol
from light9.curvecalc.curve import Curveset
from light9.curvecalc import curveview 
from light9.curvecalc.musicaccess import Music, currentlyPlayingSong
from light9.wavelength import wavelength
from light9.uihelpers import toplevelat
from light9.namespaces import L9
from light9.curvecalc.subterm import read_all_subs, savekey, graphPathForSubterms
from light9.curvecalc.subtermview import add_one_subterm
from light9.curvecalc.output import Output

def makeGraph():
    graphOrig = showconfig.getGraph()
    graph = Graph() # a copy, since we're going to add subs into it
    for s in graphOrig:
        graph.add(s)
    read_all_subs(graph)
    return graph

class Main(object):
    def __init__(self, graph, opts, song, curveset, subterms, music):
        self.graph = graph
        self.music = music
        wtree = gtk.Builder()
        wtree.add_from_file(sibpath(__file__, "../light9/curvecalc/curvecalc.glade"))
        mainwin = wtree.get_object("MainWindow")
        mainwin.connect("destroy", gtk.main_quit)
        wtree.connect_signals(self)
        mainwin.show_all()

        mainwin.connect("delete-event", lambda *args: reactor.crash())
        mainwin.set_title("curvecalc - %s" % graph.label(song))
        
        self.add_subterms_for_song(song, curveset, subterms,
                                   wtree.get_object("subterms")
                                   )

        def refreshCurveView():
            m = os.path.getmtime(curveview.__file__.replace('.pyc', '.py'))

            if not hasattr(self, 'curvesetView') or self.curvesetView._mtime != m:
                print "reload curveview.py"
                curvesVBox = wtree.get_object("curves")
                [curvesVBox.remove(c) for c in curvesVBox.get_children()]
                try:
                    linecache.clearcache()
                    reload(curveview)
                    # mem problem somewhere; need to hold a ref to this
                    self.curvesetView = curveview.Curvesetview(
                        curvesVBox, curveset)
                    self.curvesetView._mtime = m

                    # curvesetview must already exist, since this
                    # makes 'add_curve' signals for all the initial
                    # curves
                    curveset.load(basename=os.path.join(
                        showconfig.curvesDir(),
                        showconfig.songFilenameFromURI(song)),
                                  skipMusic=opts.skip_music)
                    # this is scheduled after some tk shuffling, to
                    # try to minimize the number of times we redraw
                    # the curve at startup. If tk is very slow, it's
                    # ok. You'll just get some wasted redraws.
                    self.curvesetView.goLive()
                except Exception, e:
                    print "reload failed:", e
            reactor.callLater(1, refreshCurveView)
        refreshCurveView()       
        
        self.makeStatusLines(wtree.get_object("status"))

        #zc = Zoomcontrol(root)

    def onPlayPause(self, item):
        # since the X coord in a curveview affects the handling, one
        # of them may be able to pick this up
        results = dispatcher.send("onPlayPause")
        times = [t for listener, t in results if t is not None]
        self.music.playOrPause(t=times[0] if times else None)

    def onSave(self, *args):
        savekey(song, subterms, curveset)

    def add_subterms_for_song(self, song, curveset, subterms, master):
        for st in self.graph.objects(song, L9['subterm']):
            log.info("song %s has subterm %s", song, st)
            add_one_subterm(self.graph,
                            self.graph.value(st, L9['sub']),
                            curveset,
                            subterms,
                            master,
                            self.graph.value(st, L9['expression']))
        master.show_all()

    def makeStatusLines(self, master):
        """various labels that listen for dispatcher signals"""
        for row, (signame, textfilter) in enumerate([
            ('input time', lambda t: "%.2fs"%t),
            ('output levels',
             lambda levels: textwrap.fill("; ".join(["%s:%.2f"%(n,v)
                                                     for n,v in
                                                     levels.items()[:5]
                                                     if v>0]),70)),
            ('update period', lambda t: "%.1fms"%(t*1000)),
            ('update status', lambda x: str(x)),
            ]):
            key = gtk.Label("%s:" % signame)
            value = gtk.Label("")
            master.resize(row + 1, 2)
            master.attach(key, 0, 1, row, row + 1)
            master.attach(value, 1, 2, row, row + 1)
            key.set_alignment(1, 0)
            value.set_alignment(0, 0)

            dispatcher.connect(lambda val, value=value, tf=textfilter:
                               value.set_text(tf(val)),
                               signame, weak=False)
        master.show_all()


    def onReloadSubs(self): # wants to be ctrl-r  too
        dispatcher.send('reload all subs')

    def onAddSubterm(self):
        uri = L9['sub/%s' % newname.get()]
        graph.add((uri, RDF.type, L9.Subterm))
        graph.add((uri, RDFS.label, Literal(newname.get())))
        add_one_subterm(graph, uri,
                        curveset, subterms, ssv, None)
        if evt.state & 4: # control key modifier
            curveset.new_curve(newname.get())
        newname.set('')


def main():
    startTime = time.time()
    parser = optparse.OptionParser()
    parser.set_usage("%prog [opts] [songURI]")
    parser.add_option("--sliders", action='store_true',
                      help='use hardware sliders')
    parser.add_option("--skip-music", action='store_true',
                      help="ignore music and smooth_music curve files")
    parser.add_option("--debug", action="store_true",
                      help="log at DEBUG")
    parser.add_option("--startup-only", action='store_true',
                      help="quit after loading everything (for timing tests)")
    opts, args = parser.parse_args()

    logging.basicConfig(format="%(asctime)s %(levelname)-5s %(name)s %(filename)s:%(lineno)d: %(message)s")
    log.setLevel(logging.DEBUG if opts.debug else logging.INFO)

    log.debug("startup: music %s", time.time() - startTime)
    try:
        song = URIRef(args[0])
    except IndexError:
        song = currentlyPlayingSong()

    music=Music()
    graph = makeGraph()

    curveset = Curveset(sliders=opts.sliders)
    subterms = []

    subtermPath = graphPathForSubterms(song)
    try:
        graph.parse(subtermPath, format='n3')
    except urllib2.URLError, e:
        if e.reason.errno != 2:
            raise
        log.info("%s not found, starting with empty graph" % subtermPath)
    
    log.debug("startup: output %s", time.time() - startTime)
    out = Output(subterms, music)

    musicfilename = showconfig.songOnDisk(song)
    maxtime = wavelength(musicfilename)
    dispatcher.connect(lambda: maxtime, "get max time", weak=False)

    start = Main(graph, opts, song, curveset, subterms, music)

    dispatcher.send("max time", maxtime=maxtime)
    dispatcher.send("show all")
        
    if opts.startup_only:
        log.debug("quitting now because of --startup-only")
        return

    reactor.run()

main()