.rubocop.yml

# Inherit style from another configuration
inherit_from: .rubocop_todo.yml

# Apply rule to all cops
AllCops:
  Include:
    - '**/Rakefile'
    - '**/config.ru'
  Exclude:
    - 'db/schema.rb'
    - 'vendor/bundle/**/*'
    - 'bundle/**/*'
    - 'config/**/*'
    - 'bin/*'

#################### Style ###############################

# Align the elements of a hash literal if they span more than one line
Style/AlignHash:
  Enabled: true

# Align the parameters of a method call if they span more than one line
Style/AlignParameters:
  Enabled: true

# Use && instead of and, use || instead of or
Style/AndOr:
  Enabled: true

# Avoid redundunt curly braces when it is obvious that hash is used
Style/BracesAroundHashParameters:
  Enabled: true

# Avoid the use of the case equality operator `===`
Style/CaseEquality:
  Enabled: true

# Use nested module/class definitions instead of compact style
Style/ClassAndModuleChildren:
  Enabled: true

# Checks the . position in multi-line method calls.
Style/DotPosition:
  Enabled: true

# Checks for uses of double negation (!!) to convert something to a boolean value.
Style/DoubleNegation:
  Enabled: true

# Use one empty line between method definitions
Style/EmptyLineBetweenDefs:
  Enabled: true

# There should be only one empty line in designated place
Style/EmptyLines:
  Enabled: true

# Keep a blank line before and after private.
Style/EmptyLinesAroundAccessModifier:
  Enabled: true

# Use hash literal {} instead of Hash.new
Style/EmptyLiteral:
  Enabled: true

# Prefer `each` over `for i`
Style/For:
  Enabled: true

# Use the new Ruby 1.9 hash syntax
Style/HashSyntax:
  Enabled: true
  EnforcedStyle: ruby19

# Checks for uses of if with negated condition. Use unless instead
Style/NegatedIf:
  Enabled: true

# Do not compare with nil. Use .nil? instead
Style/NilComparison:
  Enabled: true

# Checks for redundant uses of self.
Style/RedundantSelf:
  Enabled: true

# Checks that operators have space around them, except for ** which should not have surrounding space.
Style/SpaceAroundOperators:
  Enabled: true

# Use single quotes unless there's string interpolation
Style/StringLiterals:
  Enabled: true

# This cop checks for tabs where spaces should be used.
Style/Tab:
  Enabled: true

# Avoid trailing blank lines
Style/TrailingBlankLines:
  Enabled: true

# Avoid trailing whitespace
Style/TrailingWhitespace:
  Enabled: true

# This cop checks for numeric comparisons that can be replaced by a predicate method.
Style/ZeroLengthPredicate:
  Enabled: true

#################### Metrics ###############################

# Avoid deep blocks nesting
Metrics/BlockNesting:
  Max: 4

# Avoid writing classes that are more than 300 lines
Metrics/ClassLength:
  Max: 300
  Exclude:
    - 'app/models/conference.rb'

Metrics/BlockLength:
  Exclude:
    - 'spec/models/conference_spec.rb'

#################### Lint ###############################

# Wrap your assignment in condition if you mean it, otherwise it is most likely equality check
Lint/AssignmentInCondition:
  Enabled: true

# Align blocks of code properly
Lint/BlockAlignment:
  Enabled: true

# Things deprecated in current ruby API
Lint/DeprecatedClassMethods:
  Enabled: true

# Do not use literal in conditions. We have it enabled for now
Lint/LiteralInCondition:
  Enabled: false

# Prefer `Kernel#loop -> break` over `begin -> while`
Lint/Loop:
  Enabled: true

# Do not put space before arguments when they are in parentheses
Lint/ParenthesesAsGroupedExpression:
  Enabled: true

# Do not rescue Exceptions class itself
Lint/RescueException:
  Enabled: true

# Do not shadow local variables in blocks, choose other name
Lint/ShadowingOuterLocalVariable:
  Enabled: true

# Use _ or variable_name to explicitly mark variable as unused
Lint/UnusedBlockArgument:
  Enabled: true

# Use _ or _argument_name to explicitly mark argument as unused
Lint/UnusedMethodArgument:
  Enabled: true

# Avoid useless assignment
Lint/UselessAssignment:
  Enabled: true

# Do not use variables in void context
Lint/Void:
  Enabled: true

# Do not use duplicated keys in hash literals.
Lint/DuplicatedKey:
  Enabled: true

#################### Rails ###############################

# Enforce Rails specific style
Rails:
  Enabled: true

# Avoid use of old-style attribute validation
Rails/Validation:
  Enabled: true

#################### Performance ###############################

# Identifies places where gsub can be replaced by tr or delete.
Performance/StringReplacement:
  Enabled: true