# golangci-lint configuration for articulate-parser
# https://golangci-lint.run/usage/configuration/

version: "2"

# Options for analysis running
run:
  # Timeout for total work
  timeout: 5m

  # Skip directories (not allowed in config v2, will use issues exclude instead)

  # Go version
  go: "1.24"

  # Include test files
  tests: true

  # Use Go module mode
  modules-download-mode: readonly

# Output configuration
output:
  # Format of output
  formats:
    text:
      print-issued-lines: true
      print-linter-name: true

  # Sort results
  sort-order:
    - linter
    - severity
    - file

  # Show statistics
  show-stats: true

# Issues configuration
issues:
  # Maximum issues count per one linter
  max-issues-per-linter: 0

  # Maximum count of issues with the same text
  max-same-issues: 3

  # Show only new issues
  new: false

  # Fix found issues (if linter supports)
  fix: false

# Formatters configuration
formatters:
  enable:
    - gofmt
    - goimports
    - gofumpt
  settings:
    # gofmt settings
    gofmt:
      simplify: true

    # goimports settings
    goimports:
      local-prefixes:
        - github.com/kjanat/articulate-parser

    # gofumpt settings
    gofumpt:
      module-path: github.com/kjanat/articulate-parser
      extra-rules: true

# Linters configuration
linters:
  # Default set of linters
  default: none

  # Enable specific linters
  enable:
    # Default/standard linters
    - errcheck      # Check for unchecked errors
    - govet         # Go vet
    - ineffassign   # Detect ineffectual assignments
    - staticcheck   # Staticcheck
    - unused        # Find unused code

    # Code quality
    - revive        # Fast, configurable linter
    - gocritic      # Opinionated Go source code linter
    - godot         # Check comment periods
    - godox         # Detect TODO/FIXME comments
    - gocognit      # Cognitive complexity
    - gocyclo       # Cyclomatic complexity
    - funlen        # Function length
    - maintidx      # Maintainability index

    # Security
    - gosec         # Security problems

    # Performance
    - prealloc      # Find slice preallocation opportunities
    - bodyclose     # Check HTTP response body closed

    # Style and formatting
    - goconst       # Find repeated strings
    - misspell      # Find misspellings
    - whitespace    # Find unnecessary blank lines
    - unconvert     # Remove unnecessary type conversions
    - dupword       # Check for duplicate words

    # Error handling
    - errorlint     # Error handling improvements
    - wrapcheck     # Check error wrapping

    # Testing
    - testifylint   # Testify usage
    - tparallel     # Detect improper t.Parallel() usage
    - thelper       # Detect test helpers without t.Helper()

    # Best practices
    - exhaustive    # Check exhaustiveness of enum switches
    - nolintlint    # Check nolint directives
    - nakedret      # Find naked returns
    - nilnil        # Check for redundant nil checks
    - noctx         # Check sending HTTP requests without context
    - contextcheck  # Check context propagation
    - asciicheck    # Check for non-ASCII identifiers
    - bidichk       # Check for dangerous unicode sequences
    - durationcheck # Check for multiplied durations
    - makezero      # Find slice declarations with non-zero length
    - nilerr        # Find code returning nil with non-nil error
    - predeclared   # Find code shadowing predeclared identifiers
    - promlinter    # Check Prometheus metrics naming
    - reassign      # Check reassignment of package variables
    - usestdlibvars # Use variables from stdlib
    - wastedassign  # Find wasted assignments

    # Documentation
    - godoclint     # Check godoc comments

    # New
    - modernize     # Suggest simplifications using new Go features

  # Exclusion rules for linters
  exclusions:
    rules:
      # Exclude some linters from test files
      - path: _test\.go
        linters:
          - gosec
          - dupl
          - errcheck
          - goconst
          - funlen
          - goerr113
          - gocognit

      # Exclude benchmarks from some linters
      - path: _bench_test\.go
        linters:
          - gosec
          - dupl
          - errcheck
          - goconst
          - funlen
          - goerr113
          - wrapcheck

      # Exclude example tests
      - path: _example_test\.go
        linters:
          - gosec
          - errcheck
          - funlen
          - goerr113
          - wrapcheck
          - revive

      # Exclude linters for main.go
      - path: ^main\.go$
        linters:
          - forbidigo

      # Exclude certain linters for generated files
      - path: internal/version/version.go
        linters:
          - gochecknoglobals
          - gochecknoinits

      # Exclude var-naming for interfaces package (standard Go pattern for interface definitions)
      - path: internal/interfaces/
        text: "var-naming: avoid meaningless package names"
        linters:
          - revive

      # Allow fmt.Print* in main package
      - path: ^main\.go$
        text: "use of fmt.Print"
        linters:
          - forbidigo

      # Exclude common false positives
      - text: "Error return value of .((os\\.)?std(out|err)\\..*|.*Close|.*Flush|os\\.Remove(All)?|.*print(f|ln)?|os\\.(Un)?Setenv). is not checked"
        linters:
          - errcheck

      # Exclude error wrapping suggestions for well-known errors
      - text: "non-wrapping format verb for fmt.Errorf"
        linters:
          - errorlint

  # Linters settings
  settings:
    # errcheck settings
    errcheck:
      check-type-assertions: true
      check-blank: false

    # govet settings
    govet:
      enable-all: true
      disable:
        - fieldalignment  # Too many false positives
        - shadow         # Can be noisy

    # goconst settings
    goconst:
      min-len: 3
      min-occurrences: 3

    # godot settings
    godot:
      scope: toplevel
      exclude:
        - "^fixme:"
        - "^todo:"
      capital: true
      period: true

    # godox settings
    godox:
      keywords:
        - TODO
        - FIXME
        - HACK
        - BUG
        - XXX

    # misspell settings
    misspell:
      locale: US

    # funlen settings
    funlen:
      lines: 100
      statements: 50

    # gocognit settings
    gocognit:
      min-complexity: 20

    # gocyclo settings
    gocyclo:
      min-complexity: 15

    # gocritic settings
    gocritic:
      enabled-tags:
        - diagnostic
        - style
        - performance
        - experimental
      disabled-checks:
        - ifElseChain
        - singleCaseSwitch
        - commentedOutCode
      settings:
        hugeParam:
          sizeThreshold: 512
        rangeValCopy:
          sizeThreshold: 512

    # gosec settings
    gosec:
      severity: medium
      confidence: medium
      excludes:
        - G104  # Handled by errcheck
        - G304  # File path provided as taint input

    # revive settings
    revive:
      severity: warning
      rules:
        - name: blank-imports
        - name: context-as-argument
        - name: context-keys-type
        - name: dot-imports
        - name: empty-block
        - name: error-naming
        - name: error-return
        - name: error-strings
        - name: errorf
        - name: exported
        - name: if-return
        - name: increment-decrement
        - name: indent-error-flow
        - name: package-comments
        - name: range
        - name: receiver-naming
        - name: time-naming
        - name: unexported-return
        - name: var-declaration
        - name: var-naming

    # errorlint settings
    errorlint:
      errorf: true
      errorf-multi: true
      asserts: true
      comparison: true

    # wrapcheck settings
    wrapcheck:
      ignore-sigs:
        - .Errorf(
        - errors.New(
        - errors.Unwrap(
        - errors.Join(
        - .WithMessage(
        - .WithMessagef(
        - .WithStack(
      ignore-package-globs:
        - github.com/kjanat/articulate-parser/*

    # exhaustive settings
    exhaustive:
      check:
        - switch
        - map
      default-signifies-exhaustive: true

    # nolintlint settings
    nolintlint:
      allow-unused: false
      require-explanation: true
      require-specific: true

    # stylecheck settings
    staticcheck:
      checks: ["all", "-ST1000", "-ST1003", "-ST1016", "-ST1020", "-ST1021", "-ST1022"]

    # maintidx settings
    maintidx:
      under: 20

    # testifylint settings
    testifylint:
      enable-all: true
      disable:
        - float-compare

    # thelper settings
    thelper:
      test:
        first: true
        name: true
        begin: true
      benchmark:
        first: true
        name: true
        begin: true

# Severity rules
severity:
  default: warning
  rules:
    - linters:
        - gosec
      severity: error
    - linters:
        - errcheck
        - staticcheck
      severity: error
    - linters:
        - godox
      severity: info