#!/usr/bin/python

"""
todo: curveview should preserve more objects, for speed maybe

"""
from __future__ import division
import xmlrpclib,time,socket,sys,textwrap,math,glob,random
from bisect import bisect_left,bisect,bisect_right
import Tkinter as tk
from dispatch import dispatcher
from twisted.internet import reactor,tksupport
import twisted
from twisted.web.xmlrpc import Proxy

sys.path.append("../light8")
import dmxclient
sys.path.append("../../semprini")
from lengther import wavelength
import Submaster
from TLUtility import make_attributes_from_args

from zoomcontrol import Zoomcontrol

class Curve:
    """curve does not know its name. see Curveset"""
    points = None # x-sorted list of (x,y)
    def __init__(self):
        self.points = [(0,0),(10,0)]

    def load(self,filename):
        self.points[:]=[]
        for line in file(filename):
            self.points.append(tuple([float(a) for a in line.split()]))
        self.points.sort()
        dispatcher.send("points changed",sender=self)

    def save(self,filename):
        if filename.endswith('-music') or filename.endswith('_music'):
            print "not saving music track"
            return
        f = file(filename,'w')
        for p in self.points:
            f.write("%s %s\n" % p)
        f.close()

    def eval(self,t):
        i = bisect_left(self.points,(t,None))-1

        if self.points[i][0]>t:
            return self.points[i][1]
        if i>=len(self.points)-1:
            return self.points[i][1]

        p1,p2 = self.points[i],self.points[i+1]
        frac = (t-p1[0])/(p2[0]-p1[0])
        y = p1[1]+(p2[1]-p1[1])*frac
        return y

    def insert_pt(self,new_pt):
        i = bisect(self.points,(new_pt[0],None))
        self.points.insert(i,new_pt)
    __call__=eval

class Curveview(tk.Canvas):
    def __init__(self,master,curve,**kw):
        self.curve=curve
        self._time = 0
        tk.Canvas.__init__(self,master,width=10,height=10,
                           relief='sunken',bd=1,
                           closeenough=5,takefocus=1, **kw)
        self.selected_points=[] # idx of points being dragged
        self.update()
        # self.bind("<Enter>",self.focus)
        dispatcher.connect(self.input_time,"input time")
        dispatcher.connect(self.update,"zoom changed")
        dispatcher.connect(self.update,"points changed",sender=self.curve)
        self.bind("<Configure>",self.update)
        for x in range(1, 6):
            def add_kb_marker_point(evt, x=x):
                print "add_kb_marker_point", evt
                self.add_point((self.current_time(), (x - 1) / 4.0))

            self.bind("<Key-%s>" % x, add_kb_marker_point)


        for butnum,factor in (5, 1.5),(4, 1/1.5):
            self.bind("<ButtonPress-%s>"%butnum,
                      lambda ev,factor=factor:
                      dispatcher.send("zoom about mouse",
                                      t=self.world_from_screen(ev.x,0)[0],
                                      factor=factor))
        self.bind("<Key-Escape>",lambda ev:
                  dispatcher.send("see time",
                                  t=self.current_time()))
    def current_time(self):
        return self._time

    def screen_from_world(self,p):
        start,end = self.zoom
        ht = self.winfo_height()
        return (p[0]-start)/(end-start)*self.winfo_width(), (ht-5)-p[1]*(ht-10)
    def world_from_screen(self,x,y):
        start,end = self.zoom
        ht = self.winfo_height()
        return x/self.winfo_width()*(end-start)+start, ((ht-5)-y)/(ht-10)
    
    def input_time(self,val):
        t=val
        pts = self.screen_from_world((val,0))+self.screen_from_world((val,1))
        self.delete('timecursor')
        self.create_line(*pts,**dict(width=2,fill='red',tags=('timecursor',)))
        self._time = t
    def update(self,*args):

        self.zoom = dispatcher.send("zoom area")[0][1]
        cp = self.curve.points

        visible_x = (self.world_from_screen(0,0)[0],
                     self.world_from_screen(self.winfo_width(),0)[0])

        visleftidx = max(0,bisect_left(cp,(visible_x[0],None))-1)
        visrightidx = min(len(cp)-1,bisect_left(cp,(visible_x[1],None))+1)
                             
        visible_points = cp[visleftidx:visrightidx+1]
        visible_idxs = range(visleftidx,visrightidx+1)
        
        self.delete('curve')

        self._draw_markers(visible_x)
        
        self._draw_line(visible_idxs,visible_points)
        
        self.dots = {} # idx : canvas rectangle

        if len(visible_points)<50:
            self._draw_handle_points(visible_idxs,visible_points)

    def _draw_markers(self,visible_x):
        mark = self._draw_one_marker

        mark(0,"0")
        t1,t2=visible_x
        if t2-t1<30:
            for t in range(int(t1),int(t2)+1):
                mark(t,str(t))
        mark(-4,"-4")

        endtimes = dispatcher.send("get max time")
        if endtimes:
            endtime = endtimes[0][1]
            mark(endtime,"end %.1f"%endtime)
            mark(endtime+10,"post %.1f"%(endtime+10))
        
    def _draw_one_marker(self,t,label):
        x = self.screen_from_world((t,0))[0]
        self.create_line(x,self.winfo_height(),x,self.winfo_height()-20,
                         tags=('curve',))
        self.create_text(x,self.winfo_height()-20,text=label,anchor='s',
                         tags=('curve',))


    def _draw_line(self,visible_idxs,visible_points):
        linepts=[]
        step=1
        linewidth=2
        if len(visible_points)>800:
            step = int(len(visible_points)/800)
            linewidth=1
        for p in visible_points[::step]:
            linepts.extend(self.screen_from_world(p))
        if len(linepts)<4:
            return
        line = self.create_line(*linepts,**dict(width=linewidth,tags='curve'))

        # canvas doesnt have keyboard focus, so i can't easily change the
        # cursor when ctrl is pressed
        #        def curs(ev):
        #            print ev.state
        #        self.bind("<KeyPress>",curs)
        #        self.bind("<KeyRelease-Control_L>",lambda ev: curs(0))
        self.tag_bind(line,"<Control-ButtonPress-1>",self.newpointatmouse)


    def _draw_handle_points(self,visible_idxs,visible_points):
        for i,p in zip(visible_idxs,visible_points):
            rad=3
            worldp = p
            p = self.screen_from_world(p)
            dot = self.create_rectangle(p[0]-rad,p[1]-rad,p[0]+rad,p[1]+rad,
                                        outline='black',fill='blue',
                                        tags=('curve','point', 'handle%d' % i))
            if worldp[1] == 0:
                rad += 3
                dot2 = self.create_oval(p[0]-rad,p[1]-rad,
                                             p[0]+rad,p[1]+rad,
                                             outline='darkgreen',
                                             tags=('curve','point', 'handle%d' % i))
            self.tag_bind('handle%d' % i,"<ButtonPress-1>",
                          lambda ev,i=i: self.dotpress(ev,i))
            self.bind("<Motion>",
                      lambda ev,i=i: self.dotmotion(ev,i))
            self.bind("<ButtonRelease-1>",
                      lambda ev,i=i: self.dotrelease(ev,i))
            self.dots[i]=dot

        self.highlight_selected_dots()
        

    def newpointatmouse(self, ev):
        p = self.world_from_screen(ev.x,ev.y)
        x, y = p
        y = max(0, y)
        y = min(1, y)
        p = x, y
        self.add_point(p)

    def add_point(self, p):
        self.unselect()
        self.curve.insert_pt(p)
        self.update()

    def highlight_selected_dots(self):
        for i,d in self.dots.items():
            if i in self.selected_points:
                self.itemconfigure(d,fill='red')
            else:
                self.itemconfigure(d,fill='blue')
        
    def dotpress(self,ev,dotidx):
        self.selected_points=[dotidx]
        self.highlight_selected_dots()

    def dotmotion(self,ev,dotidx):
        cp = self.curve.points
        moved=0
        for idx in self.selected_points:
            x,y = self.world_from_screen(ev.x,ev.y)
            y = max(0,min(1,y))
            if idx>0 and x<=cp[idx-1][0]:
                continue
            if idx<len(cp)-1 and x>=cp[idx+1][0]:
                continue
            moved=1
            cp[idx] = (x,y)
        if moved:
            self.update()
    def unselect(self):
        self.selected_points=[]
        self.highlight_selected_dots()
        
    def dotrelease(self,ev,dotidx):
        self.unselect()
        
class Curveset:
    curves = None # curvename : curve
    def __init__(self):
        self.curves = {}
    def load(self,basename):
        """find all files that look like basename-curvename and add
        curves with their contents"""
        for filename in glob.glob("%s-*"%basename):
            curvename = filename[filename.find('-')+1:]
            c=Curve()
            c.load(filename)
            curvename = curvename.replace('-','_')
            self.add_curve(curvename,c)            
    def save(self,basename):
        """writes a file for each curve with a name
        like basename-curvename"""
        for name,cur in self.curves.items():
            cur.save("%s-%s" % (basename,name))
    def add_curve(self,name,curve):
        self.curves[name] = curve
        dispatcher.send("add_curve",sender=self,name=name)
    def globalsdict(self):
        return self.curves.copy()
    def new_curve(self,name):
        if name=="":
            print "no name given"
            return
        while name in self.curves:
           name=name+"-1"

        self.add_curve(name,Curve())


class Curvesetview(tk.Frame):
    curves = None # curvename : Curveview
    def __init__(self,master,curveset,**kw):
        self.curves = {}
        self.curveset = curveset
        tk.Frame.__init__(self,master,**kw)
        
        f = tk.Frame(self,relief='raised',bd=1)
        f.pack(side='top',fill='x')
        tk.Button(f,text="new curve named:",
                  command=lambda: self.curveset.new_curve(self.newcurvename.get())).pack(side='left')
        self.newcurvename = tk.StringVar()
        tk.Entry(f,textvariable=self.newcurvename).pack(side='left',
                                                        fill='x',exp=1)
        
        
        dispatcher.connect(self.add_curve,"add_curve",sender=self.curveset)
    def add_curve(self,name):
        f = tk.Frame(self,relief='raised',bd=1)
        f.pack(side='top',fill='both',exp=1)
        tk.Label(f,text="curve %r"%name,width=15).pack(side='left')
        cv = Curveview(f,self.curveset.curves[name])
        cv.pack(side='right',fill='both',exp=1)
        self.curves[name] = cv

class Music:
    def __init__(self):
        self.player=None # xmlrpc Proxy to player
        self.recenttime=0
        
    def current_time(self):
        """return deferred which gets called with the current time"""
        if self.player is None:
            self.player = Proxy("http://miles:8040")
#            d = self.player.callRemote("songlength")
#            d.addCallback(lambda l: dispatcher.send("max time",maxtime=l))
#            d = self.player.callRemote("songname")
#            d.addCallback(lambda n: dispatcher.send("songname",name=n))
        d = self.player.callRemote('gettime')
        def sendtime(t):
            dispatcher.send("input time",val=t)
            return t # pass along to the real receiver
        def error(e):
            pass#self.player=None
        d.addCallback(sendtime)
        return d
        
class Subexpr:
    curveset = None
    def __init__(self,curveset,expr=""):
        self.curveset = curveset
        self.lasteval = None
        self.expr=expr
        self._smooth_random_items = [random.random() for x in range(100)]
    def eval(self,t):
        if self.expr=="":
            dispatcher.send("expr_error",sender=self,exc="no expr, using 0")
            return 0
        glo = self.curveset.globalsdict()
        glo['t'] = t

        glo['nsin'] = lambda x: (math.sin(x * (2 * math.pi)) + 1) / 2
        glo['ncos'] = lambda x: (math.cos(x * (2 * math.pi)) + 1) / 2
        glo['within'] = lambda a, b: a < t < b
        glo['bef'] = lambda x: t < x
        glo['aft'] = lambda x: x < t
        glo['smoove'] = lambda x: -2 * (x ** 3) + 3 * (x ** 2)

        def smooth_random(speed=1):
            """1 = new stuff each second, <1 is slower, fade-ier"""
            x = (t * speed) % len(self._smooth_random_items)
            x1 = int(x)
            x2 = (int(x) + 1) % len(self._smooth_random_items)
            y1 = self._smooth_random_items[x1]
            y2 = self._smooth_random_items[x2]
            return y1 + (y2 - y1) * ((x - x1))

        def notch_random(speed=1):
            """1 = new stuff each second, <1 is slower, notch-ier"""
            x = (t * speed) % len(self._smooth_random_items)
            x1 = int(x)
            y1 = self._smooth_random_items[x1]
            return y1
            
        glo['noise'] = smooth_random
        glo['notch'] = notch_random

        try:
            self.lasteval = eval(self.expr,glo)
        except Exception,e:
            dispatcher.send("expr_error",sender=self,exc=e)
        else:
            dispatcher.send("expr_error",sender=self,exc="ok")
        return self.lasteval

    def expr():
        doc = "python expression for level as a function of t, using curves"
        def fget(self):
            return self._expr
        def fset(self, value):
            self._expr = value
            dispatcher("expr_changed",sender=self)
        return locals()
    expr = property(**expr())

class Subexprview(tk.Frame):
    def __init__(self,master,se,**kw):
        self.subexpr=se
        tk.Frame.__init__(self,master,**kw)
        self.evar = tk.StringVar()
        e = self.ent = tk.Entry(master,textvariable=self.evar)
        e.pack(side='left',fill='both',exp=1)
        self.expr_changed()
        self.evar.trace_variable('w',self.evar_changed)
        dispatcher.connect(self.expr_changed,"expr_changed",
                           sender=self.subexpr)
        self.error = tk.Label(master)
        self.error.pack(side='left')
        dispatcher.connect(lambda exc: self.error.config(text=str(exc)),
                           "expr_error",sender=self.subexpr,weak=0)
    def expr_changed(self):
        if self.subexpr.expr!=self.evar.get():
            self.evar.set(self.subexpr.expr)
    def evar_changed(self,*args):
        self.subexpr.expr = self.evar.get()

class Subterm:
    """one Submaster and its Subexpr"""
    def __init__(self,submaster,subexpr):
        make_attributes_from_args('submaster','subexpr')
    def scaled(self,t):
        return self.submaster * self.subexpr.eval(t)

class Subtermview(tk.Frame):
    def __init__(self,master,st,**kw):
        self.subterm = st
        tk.Frame.__init__(self,master,bd=1,relief='raised',**kw)
        l = tk.Label(self,text="sub %r" % self.subterm.submaster.name)
        l.pack(side='left')
        sev=Subexprview(self,self.subterm.subexpr)
        sev.pack(side='left',fill='both',exp=1)

class Output:
    lastsendtime=0
    lastsendlevs=None
    def __init__(self,subterms):
        make_attributes_from_args('subterms')
    def send_dmx(self,t):

        scaledsubs=[]
        for st in self.subterms:
            scl = st.scaled(t)
            scaledsubs.append(scl)
        out = Submaster.sub_maxes(*scaledsubs)
        levs = out.get_levels()
        now=time.time()
        if now-self.lastsendtime>5 or levs!=self.lastsendlevs:
            dispatcher.send("output levels",val=levs)
            dmxclient.outputlevels(out.get_dmx_list(),
                                   twisted=1,clientid='curvecalc')
            self.lastsendtime = now
            self.lastsendlevs = levs

def create_status_lines(master):
    for signame,textfilter in [
        ('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)),
        ]:
        l = tk.Label(master,anchor='w',justify='left')
        l.pack(side='top',fill='x')
        dispatcher.connect(lambda val,l=l,sn=signame,tf=textfilter:
                           l.config(text=sn+": "+tf(val)),
                           signame,weak=0)

def savesubterms(filename,subterms):
    s=""
    for st in subterms:
        s=s+"%s %s\n" % (st.submaster.name,st.subexpr.expr)
    
    file(filename,'w').write(s)

class SubtermSetView(tk.Frame):
    def __init__(self, master, *args, **kw):
        tk.Frame.__init__(self, master, *args, **kw)
        self.cur_row = 0
        self.cur_col = 0
        self.ncols = 2
    def add_subtermview(self, stv):
        stv.grid(row=self.cur_row, column=self.cur_col, sticky='news')
        self.columnconfigure(self.cur_col, weight=1)

        self.cur_col += 1
        self.cur_col %= self.ncols
        if self.cur_col == 0:
            self.cur_row += 1

def add_one_subterm(subname, curveset, subterms, root, expr=''):
    term = Subterm(Submaster.Submaster(subname), Subexpr(curveset,expr))
    subterms.append(term)

    stv=Subtermview(ssv,term)
    # stv.pack(side='top',fill='x')
    global ssv
    ssv.add_subtermview(stv)

    return term

def subterm_adder(master, curveset, subterms, root):
    f=tk.Frame(master,relief='raised',bd=1)
    newname = tk.StringVar()

    def add_cmd():
        add_one_subterm(newname.get(), curveset, subterms, root, '')

    tk.Button(f,text="new subterm named:", command=add_cmd).pack(side='left')
    tk.Entry(f,textvariable=newname).pack(side='left',fill='x',exp=1)
    return f
    
#######################################################################
root=tk.Tk()
root.tk_setPalette("gray50")
root.wm_geometry("1120x850")
root.tk_focusFollowsMouse()

music=Music()

zc = Zoomcontrol(root)
zc.pack(side='top',fill='x')

curveset = Curveset()
csv = Curvesetview(root,curveset)
csv.pack(side='top',fill='both',exp=1)

ssv = SubtermSetView(root)
ssv.pack(side='top', fill='x')

song = sys.argv[1]
root.title("Curemaster 2000MX - %s" % song)

musicfilename = "/my/music/projects/sharlyn2004/%s.wav" % song
maxtime = wavelength(musicfilename)
dispatcher.send("max time",maxtime=maxtime)
dispatcher.connect(lambda: maxtime, "get max time",weak=0)
curveset.load(basename="curves/"+song)

subterms = []
subterm_adder(root, curveset, subterms, root).pack(side='top',fill='x')
for line in file("subterms/"+song):
    subname,expr = line.strip().split(" ",1)

    term = add_one_subterm(subname, curveset, subterms, root, expr)
    
    # stv=Subtermview(root,term)
    # stv.pack(side='top',fill='x')

out = Output(subterms)

def savekey(*args):
    print "saving",song
    savesubterms("subterms/"+song,subterms)
    curveset.save(basename="curves/"+song)
    print "saved"

    
root.bind("<Control-Key-s>",savekey)

create_status_lines(root)
    
recent_t=[]
later = None
def update():
    global later
    d = music.current_time()
    d.addCallback(update2)
    d.addErrback(updateerr)
def updateerr(e):
    global later
    print "err",e
    if later and not later.cancelled and not later.called: later.cancel()
    later = reactor.callLater(1,update)
def update2(t):
    global recent_t,later

    if later and not later.cancelled and not later.called: later.cancel()
    later = reactor.callLater(.01,update)

    recent_t = recent_t[-50:]+[t]
    period = (recent_t[-1]-recent_t[0])/len(recent_t)
    dispatcher.send("update period",val=period)
    out.send_dmx(t)
update()

#def logprint(msg):
#    print "log",msg
#twisted.python.log.addObserver(logprint)

root.bind("<Control-Key-q>",lambda ev: reactor.stop)
root.bind("<Destroy>",lambda ev: reactor.stop)
root.protocol('WM_DELETE_WINDOW', reactor.stop)
tksupport.install(root,ms=10)
if 0:
    sys.path.append("/home/drewp/projects/editor/pour")
    from utils import runstats
    runstats("reactor.run()")
else:
    reactor.run()