#!/usr/bin/env python
"""
com.inamidst.summary - Arcs Summary Widget
Author: Sean B. Palmer, inamidst.com
"""

import urllib, heapq
import trio

def main(arcs, write, params): 
   lib = arcs.library

   write(title='Arcs - Quick Summary')
   write('<h1 style="font-size:1.5em">Quick Summary</h1>')

   ranked = []
   for node, rank in lib.rank.iteritems(): 
      heapq.heappush(ranked, (-rank, node))

   nodes = []
   for i in xrange(25): 
      rank, node = heapq.heappop(ranked)
      n = arcs.Node(node, lib)
      nodes.append(n)

   def write_node(node, association=None): 
      label = node.label()
      origins = [] # @@ if origin length > 3...
      for graph_label, G in node.graphs(): 
         branch, leaf = arcs.split(G.docURI)
         if G.docURI.startswith('file:///'): 
            domain = 'localhost '
         elif G.docURI.startswith('http://'): 
            domain = G.docURI.split('/')[2] + ' '
         else: domain = ''
         origins.append(domain + leaf)

      type_labels = list(node.type_labels())
      type_labels = sorted(type_labels)
      if len(type_labels) > 1: 
         type_labels = [type_labels[0]] + ['&amp;c.']

      if not association: 
         write('<p>')
      else: write('<p style="margin-left:2em">')

      write('<span style="font-size:120%">')
      nodeURI = urllib.quote(str(node.node).strip('<>'), safe='/:')
      write('<a href="/?about=%s">%s</a>' % (nodeURI, label))
      if type_labels: 
         write(' (' + ', '.join(type_labels) + ')')
      write('</span>')
      write('<br />')

      if association: 
         write(association)
         write('<br />')

      if association: 
         write(node.summary(80))
      else: write(node.summary(160))
      write('<br />')

      write('<span style="color:#008000">')
      sibs = len(node.siblings.keys())
      write(', '.join(origins) + ' - ' + str(sibs) + ' facts')
      write('</span>')

      write('</p>')
      write('\n')

   write('<div style="margin-right:40%">')

   sibling_count = {}
   for node in nodes: 
      list(node.arcs())

      for other in nodes: 
         if node.node == other.node: continue
         if node.siblings.has_key(other.node): 
            try: sibling_count[node.node] += 1
            except KeyError: 
               sibling_count[node.node] = 1

   while nodes: 
      node = nodes[0]
      # list(node.arcs())
 
      write_node(node)
      found = 0
      for other in nodes[1:]: 
         if sibling_count.get(other.node, 2) > 1: continue

         if node.siblings.has_key(other.node): 
            arc = node.siblings[other.node].pop()
            if arc[1] == trio.n3['rdf:type']: continue

            # This arc is from the other direction
            if arc[0] == '->': 
               prefix = '&#x2190; '
            else: prefix = ''
            arc_label = prefix + lib.label(arc[1])
            write_node(other, arc_label + ' ' + node.label())

            nodes.remove(other)
            found += 1

         if found >= 3: break
      nodes = nodes[1:]
   write('</div>')

   node_amount = len(lib.manifest.keys())
   write('<p>Showing 25 out of %s things...</p>' % node_amount)

if __name__ == '__main__': 
   print __doc__