#!/usr/bin/env python2.7

# -*- coding: utf-8 -*- 

from genshi.template import TemplateLoader

from genshi import Markup

loader = TemplateLoader('doc/tmpl', auto_reload=True)

from glob import glob

import re

import os.path

import inspect

from pkg_resources import parse_version

from docutils.writers.html4css1 import Writer,HTMLTranslator

from iro.view.xmlrpc import TwistedInterface as Current 

from iro import __version__

from createerm import createSchemaPlot, tables, tables_cls

class NoHeaderHTMLTranslator(HTMLTranslator):

    def __init__(self, document):

        HTMLTranslator.__init__(self,document)

        self.body_prefix = []

        self.body_suffix = []

_w = Writer()

_w.translator_class = NoHeaderHTMLTranslator

_w.visitor_attributes = ("html_body",)

def d():

    subs = _w.interpolation_dict()

    return "%(html_body)s"%subs

_w.apply_template = d

def reSTify(s):

    if s.tagname == "paragraph":

        d.append(s[0])

    else:

        d.append(s)

class Link():

    def __init__(self,name,title):

        self.name=name

        self.title=title

    def getLink(self):

        return self.name

    def __getitem__(self,name):

        if name == "link":

            return self.getLink()

        return AttributeError(name)

class Site(Link):

    pass

class Keyword():

    def __init__(self, name=None, typ=None, description=None):

        self.name=name

        self.typ=typ

        self.description=description

    def __repr__(self):

        return '<Keyword("%s", "%s", "%s")>'%(self.name, self.typ, self.description)

def keywords(f):

    NORMAL = 0

    TYPE = 1

    pd = publish_doctree(f.__doc__.decode('utf8'))

    kws={}

    for child in pd[1][0]:

        kw = Keyword()

        ftyp = NORMAL

        for sc in child:

            if sc.tagname == "field_name":

                p = sc.astext().split()

                if p[0] in ["param",]:

                    if len(p) == 3:             #param typ name

                        kw.name = p[2]

                        kw.typ = p[1]

                    if len(p) == 2:

                        kw.name = p[1]

                elif p[0] == "type":

                    kw = kws[p[1]]

                    ftyp=TYPE

                elif p[0] in ["return","rtyp"]:

                    break

                else:

                    raise Exception("Unknown field_name: %s"%(p[0]))

            if sc.tagname == "field_body":

                if ftyp == NORMAL:

                    kw.description = Markup(reSTify(sc[0]))

                if ftyp == TYPE:

                    kw.typ = sc[0][0]

        else:

            kws[kw.name] = kw

    return kws

def ret(f):

    NORMAL = 0

    TYPE = 1

    pd = publish_doctree(f.__doc__.decode('utf8'))

    for child in pd[1][0]:

        kw = Keyword(name="return")

        ftyp = NORMAL

        for sc in child:

            if sc.tagname == "field_name":

                p = sc.astext().split()

                if p[0] == "return":

                    if len(p) == 2:

                        kw.typ = p[1]

                elif p[0] == "rtype":

                    ftyp=TYPE

                elif p[0] in ["param","type"]:

                    break

                else:

                    raise Exception("Unknown field_name: %s"%(p[0]))

            if sc.tagname == "field_body":

                if ftyp == NORMAL:

                    kw.description = Markup(reSTify(sc[0]))

                if ftyp == TYPE:

                    kw.typ = sc[0][0]

        else:

            return kw

    raise Exception("no return description")

class Arg():

    def __init__(self,name,f):

        self.name=name

        k = keywords(f)

        kwd=k[name]

        self.typ=kwd.typ

        self.description=kwd.description

class Method(Link):

    def __init__(self,name,methods):

        title=name[0].upper()+name[1:]

        Link.__init__(self,name,title)

        m=methods[name]

        (args, varargs, keywords, defaults)=inspect.getargspec(m)

        a=[]

        for b in args:

            if b in ("self","session"):

                continue

            else:

                a.append(b)

        args = a

        self.func_line=inspect.formatargspec(args, varargs, keywords, defaults)

        pd = publish_doctree(m.__doc__)

        if pd[0].tagname == "paragraph":

            self.description = pd[0].astext()

        self.args=[Arg(a,m) for a in args]

        self.rets=[ret(m)]

class Table(Link):

    def __init__(self,cls):

        name=cls.__name__

        self.tablename=cls.__tablename__

        title=self.tablename[0].upper()+self.tablename[1:]

        Link.__init__(self,name,title)

class File:

    def __init__(self,path):

        self.version = re.search("/iro-(.*).tar.gz",path).group(1)

        self.name = os.path.basename(path)

def main():

    sites=[Site("index.html","Iro"),

           Site("current.html","API Documentation"),

           Site("database.html","Datenbase Schema"),

           Site("about.html","About us"),

           ]

    files=[File(f) for f in glob("web/files/*tar.gz")]

    files.sort(key=lambda a:parse_version(a.version),reverse=True)

    code ="files/iro-%s.tar.gz"%__version__

    current_methods = dict(inspect.getmembers(Current()))

    current=[ Method(i,current_methods) for i in Current().listMethods() if i  != "listMethods" ]

    t = [Table(tables_cls[str(f)]) for f in tables]

    createSchemaPlot('web/images/db-schema.svg')

    gd = {"sites":sites,

          "current":current,

          "tables": t,

          "code":code,

          "files":files

        }

    for site in sites:

        print("generiere %s" % site.name)

        tmpl = loader.load(site.name)

        def a(s):

            if s == site:

                return {"class":"menu active"}

        stream = tmpl.generate(active=a, **gd)

        with open('web/'+site.name, "w") as g:

            g.write(stream.render('html', doctype='html'))

if __name__ == '__main__':

    main()