import os, time
from os.path import *
import gnomeapplet, gtk, gtk.gdk, gconf, gobject, pango
from gettext import gettext as _
import locale
import csv
import invest, invest.about, invest.chart

COLORSCALE_POSITIVE = [
	"white",
	"#ad7fa8",
	"#75507b",
	"#5c3566",
	"#729fcf",
	"#3465a4",
	"#204a87",
	"#8ae234",
	"#73d216",
	"#4e9a06",
]
COLORSCALE_NEGATIVE = [
	"white",
	"#fce94f",
	"#e9b96e",
	"#fcaf3e",
	"#c17d11",
	"#f57900",
	"#ce5c00",
	"#ef2929",
	"#cc0000",
	"#a40000",
]
LIGHT = -3
MEDIUM = -1

TICKER_TIMEOUT = 10000#3*60*1000#

class InvestWidget(gtk.TreeView):
	def __init__(self, quotes_updater):
		gtk.TreeView.__init__(self)
		self.set_property("rules-hint", True)
		self.set_reorderable(True)
		self.set_hover_selection(True)

		simple_quotes_only = quotes_updater.simple_quotes_only()

		# model: SYMBOL, LABEL, TICKER_ONLY, BALANCE, BALANCE_PCT, VALUE, VARIATION_PCT, PB
		# Translators: these words all refer to a stock. Last is short
		# for "last price". Gain is referring to the gain since the
		# stock was purchased.
		col_names = [_('Ticker'), _('Last'), _('Change %'), _('Chart'), _('Gain'), _('Gain %')]
		col_cellgetdata_functions = [self._getcelldata_label, self._getcelldata_value,
			self._getcelldata_variation, None, self._getcelldata_balance, 
			self._getcelldata_balancepct]
		for i, col_name in enumerate(col_names):
			if i < 3:
				cell = gtk.CellRendererText()
				if i > 0:
					cell.set_property("xalign", 1.0)
				column = gtk.TreeViewColumn (col_name, cell)
				if i == 0:
					column.set_sort_column_id(quotes_updater.LABEL)
				elif i == 2:
					column.set_sort_column_id(quotes_updater.VARIATION_PCT)
				column.set_cell_data_func(cell, col_cellgetdata_functions[i])
				self.append_column(column)
			elif i == 3:
				cell_pb = gtk.CellRendererPixbuf()
				column = gtk.TreeViewColumn (col_name, cell_pb, pixbuf=quotes_updater.PB)
				self.append_column(column)
			else:
				# add the last two column only if we have any positions
				if simple_quotes_only == False:
					cell = gtk.CellRendererText()
					cell.set_property("xalign", 1.0)
					column = gtk.TreeViewColumn (col_name, cell)
					if i == 4:
						column.set_sort_column_id(quotes_updater.BALANCE)
					elif i == 5:
						column.set_sort_column_id(quotes_updater.BALANCE_PCT)
					column.set_cell_data_func(cell, col_cellgetdata_functions[i])
					self.append_column(column)

		if simple_quotes_only == True:
			self.set_property('headers-visible', False)

		self.connect('row-activated', self.on_row_activated)
		self.set_model(quotes_updater)


	# locale-aware formatting of the value as monetary, without currency symbol, using 2 decimal digits
	def format_currency(self, value, currency):
		return locale.format("%.2f", value, True, True) + " " + currency

	# locale-aware formatting of the percent float (decimal point, thousand grouping point) with 2 decimal digits
	def format_percent(self, value):
		return locale.format("%+.2f", value, True) + "%"

	# locale-aware formatting of the float value (decimal point, thousand grouping point) with sign and 2 decimal digits
	def format_difference(self, value, currency):
		return locale.format("%+.2f", value, True, True) + " " + currency


	def _getcelldata_label(self, column, cell, model, iter):
		cell.set_property('text', model[iter][model.LABEL])

	def _getcelldata_value(self, column, cell, model, iter):
		cell.set_property('text', self.format_currency(model[iter][model.VALUE], model[iter][model.CURRENCY]))

	def is_selected(self, model, iter):
		m, it = self.get_selection().get_selected()
		return it != None and model.get_path(iter) == m.get_path(it)

	def get_color(self, model, iter, field):
		palette = COLORSCALE_POSITIVE
		intensity = MEDIUM
		if model[iter][field] < 0:
			palette = COLORSCALE_NEGATIVE
		if self.is_selected(model, iter):
			intensity = LIGHT
		return palette[intensity]

	def _getcelldata_variation(self, column, cell, model, iter):
		color = self.get_color(model, iter, model.VARIATION_PCT)
		change_pct = self.format_percent(model[iter][model.VARIATION_PCT])
		cell.set_property('markup',
			"<span foreground='%s'>%s</span>" %
			(color, change_pct))

	def _getcelldata_balance(self, column, cell, model, iter):
		is_ticker_only = model[iter][model.TICKER_ONLY]
		color = self.get_color(model, iter, model.BALANCE)
		if is_ticker_only:
			cell.set_property('text', '')
		else:
			balance = self.format_difference(model[iter][model.BALANCE], model[iter][model.CURRENCY])
			cell.set_property('markup',
				"<span foreground='%s'>%s</span>" %
				(color, balance))

	def _getcelldata_balancepct(self, column, cell, model, iter):
		is_ticker_only = model[iter][model.TICKER_ONLY]
		color = self.get_color(model, iter, model.BALANCE_PCT)
		if is_ticker_only:
			cell.set_property('text', '')
		else:
			balance_pct = self.format_percent(model[iter][model.BALANCE_PCT])
			cell.set_property('markup',
				"<span foreground='%s'>%s</span>" %
				(color, balance_pct))

	def on_row_activated(self, treeview, path, view_column):
		ticker = self.get_model()[self.get_model().get_iter(path)][0]
		if ticker == None:
			return

		invest.chart.show_chart([ticker])

#class InvestTicker(gtk.Label):
#	def __init__(self):
#		gtk.Label.__init__(self, _("Waiting..."))
#
#		self.quotes = []
#		gobject.timeout_add(TICKER_TIMEOUT, self.scroll_quotes)
#
#		get_quotes_updater().connect('quotes-updated', self.on_quotes_update)
#
#	def on_quotes_update(self, updater):
#		self.quotes = []
#		updater.foreach(self.update_quote, None)
#
#	def update_quote(self, model, path, iter, user_data):
#		color = GREEN
#		if model[iter][model.BALANCE] < 0:
#			color = RED
#
#		self.quotes.append(
#			"%s: <span foreground='%s'>%+.2f (%+.2f%%)</span> %.2f" %
#			(model[iter][model.SYMBOL], color, model[iter][model.BALANCE], model[iter][model.BALANCE_PCT], model[iter][model.VALUE]))
#
#	def scroll_quotes(self):
#		if len(self.quotes) == 0:
#			return True
#
#		q = self.quotes.pop()
#		self.set_markup("<span face='Monospace'>%s</span>" % q)
#		self.quotes.insert(0, q)
#
#		return True
#
#gobject.type_register(InvestTicker)

class InvestTrend(gtk.Image):
	def __init__(self):
		gtk.Image.__init__(self)
		self.pixbuf = None
		self.previous_allocation = (0,0)
		self.connect('size-allocate', self.on_size_allocate)
		get_quotes_updater().connect('quotes-updated', self.on_quotes_update)

	def on_size_allocate(self, widget, allocation):
		if self.previous_allocation == (allocation.width, allocation.height):
			return

		self.pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, True, 8, allocation.height, allocation.height)
		self.set_color("grey")
		self.previous_allocation = (allocation.width, allocation.height)

	def set_color(self, color, opacity=0xFF):
		if self.pixbuf != None:
			try:
				color = pango.Color(color)
				factor = float(0xFF)/0xFFFF
				self.pixbuf.fill(
					int(color.red*factor)<<24|int(color.green*factor)<<16|int(color.blue*factor)<<8|opacity)
				self.set_from_pixbuf(self.pixbuf)
			except Exception, msg:
				invest.error("Could not set color: %s" % msg)

	def on_quotes_update(self, updater):
		start_total = 0
		now_total = 0
		for row in updater:
			# Don't count the ticker only symbols in the color-trend
			if row[updater.TICKER_ONLY]:
				continue

			var = row[updater.VARIATION]/100
			now = row[updater.VALUE]

			start = now / (1 + var)

			portfolio_number = sum([purchase["amount"] for purchase in invest.STOCKS[row[updater.SYMBOL]]["purchases"]])
			start_total += start * portfolio_number
			now_total += now * portfolio_number

		day_var = 0
		if start_total != 0:
			day_var = (now_total - start_total) / start_total * 100

		color = int(2*day_var)
		opacity = min(0xFF, int(abs(127.5*day_var)))
		if day_var < 0:
			color = COLORSCALE_NEGATIVE[min(len(COLORSCALE_NEGATIVE)-1, abs(color))]
		else:
			color = COLORSCALE_POSITIVE[min(len(COLORSCALE_POSITIVE)-1, abs(color))]

		self.set_color(color, opacity)

gobject.type_register(InvestTrend)
