.golangci.yml

linters-settings:
  dupl:
    threshold: 100
  funlen:
    lines: 100
    statements: 50
  gci:
    local-prefixes: github.com/obalunenko/getenv
  goconst:
    min-len: 2
    min-occurrences: 2
  gocritic:
    enabled-tags:
      - diagnostic
      - experimental
      - opinionated
      - performance
      - style
    disabled-checks:
      - dupImport # https://github.com/go-critic/go-critic/issues/845
      - ifElseChain
      - hugeParam
      - octalLiteral
      - wrapperFunc
      - sloppyReassign
  gocyclo:
    min-complexity: 15
  goimports:
    local-prefixes: github.com/obalunenko/getenv
  gomnd:
    settings:
      mnd:
        # don't include the "operation" and "assign"
        checks: [ argument,case,condition,return ]
  govet:
    check-shadowing: true
  lll:
    line-length: 140
  misspell:
    locale: US
  nolintlint:
    allow-leading-space: true # don't require machine-readable nolint directives (i.e. with no leading space)
    allow-unused: false # report any unused nolint directives
    require-explanation: false # don't require an explanation for nolint directives
    require-specific: false # don't require nolint directives to be specific about which linter is being skipped

linters:
  disable-all: true
  enable:
    - bodyclose
    - dogsled
    - dupl
    - errcheck
    - exportloopref
    - exhaustive
    - funlen
    - gochecknoinits
    - goconst
    - gocritic
    - gocyclo
    - gofmt
    - goimports
    - gomnd
    - goprintffuncname
    - gosec
    - gosimple
    - govet
    - ineffassign
    - lll
    - misspell
    - nakedret
    - noctx
    - nolintlint
    - rowserrcheck
    - staticcheck
    - stylecheck
    - typecheck
    - unconvert
    - unparam
    - unused
    - whitespace
    - revive
    - wsl

  # don't enable:
  # - asciicheck
  # - scopelint
  # - gochecknoglobals
  # - gocognit
  # - godot
  # - godox
  # - goerr113
  # - interfacer
  # - maligned
  # - nestif
  # - prealloc
  # - testpackage

issues:
  exclude-use-default: false
  exclude:
    # for "public interface + private struct implementation" cases only!
    - exported func * returns unexported type *, which can be annoying to use
    - should have a package comment, unless it's in another file for this package
  # Excluding configuration per-path, per-linter, per-text and per-source
  exclude-rules:
    # Exclude some linters from running on tests files.
    - path: _test\.go
      linters:
        - gocyclo
        - funlen
        - dupl
        - gosec
    - path: internal/input/
      linters:
        - gocyclo
        - funlen
        - godot
        - godox
        - dupl
        - gofmt
        - gci
        - gofumpt
        - goimports
        - gosimple
    - path: internal/puzzles/constants.go
      linters:
        - revive
    - path: internal/puzzles/solutions/
      linters:
        - gochecknoinits

      # Show only new issues: if there are unstaged changes or untracked files,
      # only those changes are analyzed, else only changes in HEAD~ are analyzed.
      # It's a super-useful option for integration of golangci-lint into existing
      # large codebase. It's not practical to fix all existing issues at the moment
      # of integration: much better don't allow issues in new code.
      # Default is false.
      new: true

      # Fix found issues (if it's supported by the linter)
      fix: false

  severity:
    # Default value is empty string.
    # Set the default severity for issues. If severity rules are defined and the issues
    # do not match or no severity is provided to the rule this will be the default
    # severity applied. Severities should match the supported severity names of the
    # selected out format.
    # - Code climate: https://docs.codeclimate.com/docs/issues#issue-severity
    # -   Checkstyle: https://checkstyle.sourceforge.io/property_types.html#severity
    # -       GitHub: https://help.github.com/en/actions/reference/workflow-commands-for-github-actions#setting-an-error-message
    default-severity: error

    # The default value is false.
    # If set to true severity-rules regular expressions become case sensitive.
    case-sensitive: false

    # Default value is empty list.
    # When a list of severity rules are provided, severity information will be added to lint
    # issues. Severity rules have the same filtering capability as exclude rules except you
    # are allowed to specify one matcher per severity rule.
    # Only affects out formats that support setting severity information.
    rules:
      - linters:
          - dupl
        severity: warning

run:
  issues-exit-code: 0
  tests: true
  skip-dirs:
    - vendor/
  skip-files:
    - \.pb\.go$

# output configuration options
output:
  # colored-line-number|line-number|json|tab|checkstyle|code-climate|junit-xml|github-actions
  # default is "colored-line-number"
  format: checkstyle

  # print lines of code with issue, default is true
  print-issued-lines: true

  # print linter name in the end of issue text, default is true
  print-linter-name: true

  # make issues output unique by line, default is true
  uniq-by-line: true

  # add a prefix to the output file references; default is no prefix
  path-prefix: ""

  # sorts results by: filepath, line and column
  sort-results: true