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require 'yaml'
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#
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# This class also contains various login of the system.
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#
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class Configuration < ActiveRecord::Base
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SYSTEM_MODE_CONF_KEY = 'system.mode'
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TEST_REQUEST_EARLY_TIMEOUT_KEY = 'contest.test_request.early_timeout'
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# set @@cache = true to only reload once.
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@@cache = false
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@@configurations = nil
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@@task_grading_info = nil
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def self.get(key)
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if @@cache
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if @@configurations == nil
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self.read_config
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end
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return @@configurations[key]
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else
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return Configuration.read_one_key(key)
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end
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end
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def self.[](key)
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self.get(key)
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end
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def self.reload
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self.read_config
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end
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def self.clear
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@@configurations = nil
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end
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def self.cache?
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@@cache
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end
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def self.enable_caching
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@@cache = true
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end
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#
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# View decision
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#
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def self.show_submitbox_to?(user)
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mode = get(SYSTEM_MODE_CONF_KEY)
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return false if mode=='analysis'
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if (mode=='contest')
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return false if (user.site!=nil) and
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((user.site.started!=true) or (user.site.finished?))
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end
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return true
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end
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def self.show_tasks_to?(user)
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mode = get(SYSTEM_MODE_CONF_KEY)
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if (mode=='contest')
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return false if (user.site!=nil) and (user.site.started!=true)
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end
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return true
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end
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def self.show_grading_result
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return (get(SYSTEM_MODE_CONF_KEY)=='analysis')
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end
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def self.allow_test_request(user)
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mode = get(SYSTEM_MODE_CONF_KEY)
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early_timeout = get(TEST_REQUEST_EARLY_TIMEOUT_KEY)
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if (mode=='contest')
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return false if ((user.site!=nil) and
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((user.site.started!=true) or
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(early_timeout and (user.site.time_left < 30.minutes))))
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end
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return false if mode=='analysis'
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return true
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end
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def self.task_grading_info
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if @@task_grading_info==nil
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read_grading_info
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end
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return @@task_grading_info
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end
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def self.contest_mode
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return get(SYSTEM_MODE_CONF_KEY) == 'contest'
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end
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protected
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def self.convert_type(val,type)
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case type
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when 'string'
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return val
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when 'integer'
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return val.to_i
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when 'boolean'
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return (val=='true')
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end
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end
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def self.read_config
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@@configurations = {}
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Configuration.find(:all).each do |conf|
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key = conf.key
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val = conf.value
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@@configurations[key] = Configuration.convert_type(val,conf.value_type)
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end
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end
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def self.read_one_key(key)
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conf = Configuration.find_by_key(key)
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if conf
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return Configuration.convert_type(conf.value,conf.value_type)
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else
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return nil
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end
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end
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def self.read_grading_info
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f = File.open(TASK_GRADING_INFO_FILENAME)
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@@task_grading_info = YAML.load(f)
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f.close
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end
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end
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jittat-