scinote-web/app/services/repository_table_state_service.rb

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class RepositoryTableStateService
attr_reader :user, :repository
def initialize(user, repository)
@user = user
@repository = repository
end
# We're using Constants::REPOSITORY_TABLE_DEFAULT_STATE as a reference for
# default table state; this Ruby Hash makes heavy use of Ruby symbols
# notation; HOWEVER, the state that is saved on the RepositoryTableState
# record, has EVERYTHING (booleans, symbols, keys, ...) saved as Strings.
def load_state
loaded = RepositoryTableState.where(user: @user, repository: @repository).take
loaded = create_default_state unless loaded&.state&.present? &&
loaded.state['order'] &&
loaded.state['columns'] &&
loaded.state['ColReorder'] &&
loaded.state.dig('columns', '1', 'visible') == 'true' &&
loaded.state.dig('columns', '3', 'visible') == 'true'
loaded
end
def update_state(state)
saved_state = load_state
return if saved_state.state.except('time') == state.except('time')
saved_state.update(state: state)
end
def create_default_state
# Destroy any state object before recreating a new one
RepositoryTableState.where(user: @user, repository: @repository).destroy_all
return RepositoryTableState.create(
user: @user,
repository: @repository,
state: generate_default_state
)
end
private
def generate_default_state
default_columns_num =
Constants::REPOSITORY_TABLE_DEFAULT_STATE[:length]
# This state should be strings-only
state = HashUtil.deep_stringify_keys_and_values(
Constants::REPOSITORY_TABLE_DEFAULT_STATE
)
repository.repository_columns.each_with_index do |_, index|
real_index = default_columns_num + index
state['columns'][real_index.to_s] =
HashUtil.deep_stringify_keys_and_values(
Constants::REPOSITORY_TABLE_STATE_CUSTOM_COLUMN_TEMPLATE
)
state['ColReorder'] << real_index.to_s
end
state['length'] = state['columns'].length.to_s
state['time'] = Time.new.to_i.to_s
state
end
end