#! /usr/bin/env python
# _*_ coding: UTF-8 _*_

import web

urls = (
	'/', 'Index'
	)

render = web.template.render('templates/')

db = web.database(dbn = 'mysql', user = '', pw = '', db = '')

def _get_schedule_list():
	schedules = db.query("SELECT sched_id, description FROM schedules WHERE sched_id < 8 ORDER BY sched_id ASC")

	lst = []
	for s in schedules:
		lst.append((s['sched_id'], s['description']))
		
	return lst

class Index:

	form = web.form.Form(
		web.form.Textbox(
			'cedula',
			web.form.notnull,
			web.form.regexp('\d+', 'Debe ser un numero'),
			size = 30,
			description = "Cedula de identidad:"
			),
		web.form.Textbox(
			'email', 
			web.form.notnull,
			size = 30,
			description = "Correo electronico:"
			),
		web.form.Dropdown(
			'horario',
			_get_schedule_list(),
			description = "Horario a inscribir:"
			),
		web.form.Button('Registrar horario')
		)

	def GET(self):
		schedules = db.query(
			"SELECT schedules.sched_id, schedules.description, schedules.capacity, rooms.name " +
			"FROM schedules " +
			"INNER JOIN rooms ON schedules.room_id = rooms.room_id " +
			"ORDER BY schedules.sched_id ASC"
			)

		return render.index(schedules, self.form(), None)

	def POST(self):
		schedules = db.query(
			"SELECT schedules.sched_id, schedules.description, schedules.capacity, rooms.name " +
			"FROM schedules " +
			"INNER JOIN rooms ON schedules.room_id = rooms.room_id " +
			"ORDER BY schedules.sched_id ASC"
			)

		form = self.form()

		if not form.validates():
			return render.index(
				schedules,
				self.form,
				"No deje los campos vac&iacute;os.<br/>La c&eacute;dula debe ser un n&uacute;mero."
				)

		else:

			student = db.query(
				"SELECT schedule_id FROM students WHERE id_CARD = $id AND email = $email",
				vars = {
					'id':str(form.d.cedula),
					'email':form.d.email.upper()
					}
				)

			if len(student) == 0:
				return render.index(schedules, self.form, "Cedula o email no encontrados.")
			else:
				if student[0]["schedule_id"] != 8:
					return render.index(schedules, self.form, "Estudiante con horario ya registrado.")
				else:

					sched = db.query(
						"SELECT description, capacity FROM schedules WHERE sched_id = $id",
						vars = {'id':form.d.horario}
						)

					if len(sched) == 0:
						return render.index(schedules, self.form, "ERROR: Horario no encontrado.")
					else:
						x = 0
						for s in sched:
							if x > 0:
								raise Exception("POOTIS")
							desc = s['description']
							cap = int(s['capacity'])
							x += 1

						if cap <= 0:
							return render.index(schedules, self.form, "Horario agotado.")
						else:
							db.query(
								"UPDATE schedules SET capacity = $cap where sched_id = $id",
								vars = {
									'id':form.d.horario,
									'cap':str((cap - 1))
									}
								)

							db.query(
								"UPDATE students " +
								"SET schedule_id = $sched " +
								"WHERE id_CARD = $id AND email = $email",
								vars = {
									'id':str(form.d.cedula),
									'email':form.d.email.upper(),
									'sched':form.d.horario
									}
								)

							schedules = db.query(
								"SELECT schedules.sched_id, schedules.description, " +
								"schedules.capacity, rooms.name " +
								"FROM schedules " +
								"INNER JOIN rooms ON schedules.room_id = rooms.room_id " +
								"ORDER BY schedules.sched_id ASC"
								)

							web.sendmail(
								'',
								form.d.email.lower(),
								'OECI - Laboratorio Registrado',
								'Ha registrado exitosamente el horario de laboratorio: ' + desc
								)

							return render.index(schedules, self.form, "Horario registrado exitosamente.")

if __name__ == "__main__":
	web.config.smtp_server = ''
	web.config.smtp_port = -1
	web.config.smtp_username = ''
	web.config.smtp_password = ''
	web.config.smtp_starttls = True

	app = web.application(urls, globals())
	app.run()