# Tencent is pleased to support the open source community by making Polaris available.
#
# Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
#
# Licensed under the BSD 3-Clause License (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://opensource.org/licenses/BSD-3-Clause
#
# Unless required by applicable law or agreed to in writing, software distributed
# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
# CONDITIONS OF ANY KIND, either express or implied. See the License for the
# specific language governing permissions and limitations under the License.

## This file contains all available configuration options
## with their default values.

# See https://github.com/golangci/golangci-lint#config-file
# See https://golangci-lint.run/usage/configuration/

# Options for analysis running.
run:
  # Exit code when at least one issue was found.
  # Default: 1
  issues-exit-code: 2

  # Include test files or not.
  # Default: true
  tests: false

  # Which dirs to skip: issues from them won't be reported.
  # Can use regexp here: `generated.*`, regexp is applied on full path.
  # Default value is empty list,
  # but default dirs are skipped independently of this option's value (see skip-dirs-use-default).
  # "/" will be replaced by current OS file path separator to properly work on Windows.
  skip-dirs:
    - pkg/model/pb
    - .*~
    - test
    - "apiserver/nacosserver/v2/pb"
    - "apiserver/xdsserverv3/cache"

  # Which files to skip: they will be analyzed, but issues from them won't be reported.
  # Default value is empty list,
  # but there is no need to include all autogenerated files,
  # we confidently recognize autogenerated files.
  # If it's not please let us know.
  # "/" will be replaced by current OS file path separator to properly work on Windows.
  skip-files:
    - ".*\\.my\\.go$"
    - ".*\\.pb\\.go$"
    - ".*_test\\.go$"
    - ".*\\.yaml$"
    - ".*\\.yml$"
    - "apiserver/xdsserverv3/cache/linear.go"

# Main linters configurations.
# See https://golangci-lint.run/usage/linters
linters:
  # Disable all default enabled linters.
  disable-all: true
  # Custom enable linters we want to use.
  enable:
    - errcheck # Errcheck is a program for checking for unchecked errors in go programs.
    - errchkjson # Checks types passed to the json encoding functions. Reports unsupported types and optionally reports occasions, where the check for the returned error can be omitted.
    - funlen # Tool for detection of long functions
    - gci # Gci controls golang package import order and makes it always deterministic.
    - goconst # Finds repeated strings that could be replaced by a constant
    - gocritic # Provides diagnostics that check for bugs, performance and style issues.
    - gofmt # Gofmt checks whether code was gofmt-ed. By default this tool runs with -s option to check for code simplification
    - gosimple # Linter for Go source code that specializes in simplifying code
    - govet # Vet examines Go source code and reports suspicious constructs, such as Printf calls whose arguments do not align with the format string
    - misspell # Finds commonly misspelled English words in comments
    - nolintlint # Reports ill-formed or insufficient nolint directives
    - revive # Fast, configurable, extensible, flexible, and beautiful linter for Go. Drop-in replacement of golint.
    - staticcheck # It's a set of rules from staticcheck. It's not the same thing as the staticcheck binary.
    - typecheck # Like the front-end of a Go compiler, parses and type-checks Go code
    - usestdlibvars # A linter that detect the possibility to use variables/constants from the Go standard library.
    - lll
    #- whitespace    # Tool for detection of leading and trailing whitespace

issues:
  max-issues-per-linter: 0
  max-same-issues: 0
  exclude-rules:
    # helpers in tests often (rightfully) pass a *testing.T as their first argument
    - path: _test\.go
      text: "context.Context should be the first parameter of a function"
      linters:
        - revive
    # Yes, they are, but it's okay in a test
    - path: _test\.go
      text: "exported func.*returns unexported type.*which can be annoying to use"
      linters:
        - revive
    # https://github.com/go-critic/go-critic/issues/926
    - linters:
        - gocritic
      text: "unnecessaryDefer:"

# https://golangci-lint.run/usage/linters
linters-settings:
  # https://golangci-lint.run/usage/linters/#misspell
  misspell:
    locale: US
    ignore-words:
      - cancelled

  # https://golangci-lint.run/usage/linters/#revive
  revive:
    ignore-generated-header: true
    severity: error
    rules:
      - name: atomic
      - name: line-length-limit
        severity: error
        arguments: [480]
      - name: unhandled-error
        severity: warning
        disabled: true
        arguments: ["fmt.Printf", "myFunction"]
      - name: var-naming
        severity: warning
        disabled: true
        arguments:
          - [
              "ID",
              "URL",
              "IP",
              "HTTP",
              "JSON",
              "API",
              "UID",
              "Id",
              "Api",
              "Uid",
              "Http",
              "Json",
              "Ip",
              "Url",
            ] # AllowList
          - ["VM"] # DenyList
      - name: string-format
        severity: warning
        disabled: false
        arguments:
          - - "core.WriteError[1].Message"
            - "/^([^A-Z]|$)/"
            - must not start with a capital letter
          - - "fmt.Errorf[0]"
            - '/(^|[^\.!?])$/'
            - must not end in punctuation
          - - panic
            - '/^[^\n]*$/'
            - must not contain line breaks
      - name: function-result-limit
        severity: warning
        disabled: false
        arguments: [5]
      - name: import-shadowing
        severity: warning
        disabled: false
        arguments: ["github.com/polarismesh/polaris", "namespace"]
      - name: waitgroup-by-value
        severity: warning
        disabled: false
      - name: max-public-structs
        severity: warning
        disabled: true
        arguments: [35]
      - name: indent-error-flow
        severity: warning
        disabled: false
      - name: function-length
        severity: warning
        disabled: false
        arguments: [80, 0]
      - name: file-header
        arguments:
          [
            "Tencent is pleased to support the open source community by making Polaris available.",
          ]
      - name: exported
        severity: warning
        disabled: true
      - name: errorf
        severity: warning
        disabled: false
      - name: error-naming
        severity: warning
        disabled: false

  # https://golangci-lint.run/usage/linters/#funlen
  funlen:
    # Checks the number of lines in a function.
    # If lower than 0, disable the check.
    # Default: 60
    lines: 230
    # Checks the number of statements in a function.
    # If lower than 0, disable the check.
    # Default: 40
    statements: -1

  # https://golangci-lint.run/usage/linters/#lll
  lll:
    # Max line length, lines longer will be reported.
    # '\t' is counted as 1 character by default, and can be changed with the tab-width option.
    # Default: 120.
    line-length: 140
    # Tab width in spaces.
    # Default: 1
    tab-width: 1

  # https://golangci-lint.run/usage/linters/#goconst
  goconst:
    # Minimal length of string constant.
    # Default: 3
    min-len: 2
    # Minimum occurrences of constant string count to trigger issue.
    # Default: 3
    # For subsequent optimization, the value is reduced.
    min-occurrences: 60
    # Ignore test files.
    # Default: false
    ignore-tests: true
    # Look for existing constants matching the values.
    # Default: true
    match-constant: false
    # Search also for duplicated numbers.
    # Default: false
    numbers: true
    # Minimum value, only works with goconst.numbers
    # Default: 3
    min: 5
    # Maximum value, only works with goconst.numbers
    # Default: 3
    max: 20
    # Ignore when constant is not used as function argument.
    # Default: true
    ignore-calls: false

  # https://golangci-lint.run/usage/linters/#gocritic
  gocritic:
    disabled-checks:
      - ifElseChain
      - assignOp
      - appendAssign
      - singleCaseSwitch
      - regexpMust
      - typeSwitchVar
      - elseif
      - badCall

  # https://golangci-lint.run/usage/linters/#gosimple
  gosimple:
    # Select the Go version to target.
    # Default: 1.13
    # Deprecated: use the global `run.go` instead.
    go: "1.15"
    # Sxxxx checks in https://staticcheck.io/docs/configuration/options/#checks
    # Default: ["*"]
    checks:
      [
        "all",
        "-S1000",
        "-S1001",
        "-S1002",
        "-S1008",
        "-S1009",
        "-S1016",
        "-S1023",
        "-S1025",
        "-S1029",
        "-S1034",
        "-S1040",
        "-S1019",
      ]

  # https://golangci-lint.run/usage/linters/#govet
  govet:
    # Report about shadowed variables.
    # Default: false
    shadow: false
    # Settings per analyzer.
    settings:
      # Analyzer name, run `go tool vet help` to see all analyzers.
      printf:
        # Comma-separated list of print function names to check (in addition to default, see `go tool vet help printf`).
        # Default: []
        funcs:
          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Infof
          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Warnf
          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Errorf
          - (github.com/golangci/golangci-lint/pkg/logutils.Log).Fatalf
        # shadow:
        # Whether to be strict about shadowing; can be noisy.
        # Default: false
        # strict: false
      unusedresult:
        # Comma-separated list of functions whose results must be used
        # (in addition to defaults context.WithCancel,context.WithDeadline,context.WithTimeout,context.WithValue,
        # errors.New,fmt.Errorf,fmt.Sprint,fmt.Sprintf,sort.Reverse)
        # Default []
        funcs:
          - pkg.MyFunc
          - context.WithCancel
          - context.WithDeadline
          - context.WithTimeout
          - context.WithValue
          - sort.Reverse
        # Comma-separated list of names of methods of type func() string whose results must be used
        # (in addition to default Error,String)
        # Default []
        stringmethods:
          - MyMethod
    # Enable all analyzers.
    # Default: false
    enable-all: true
    # Disable analyzers by name.
    # Run `go tool vet help` to see all analyzers.
    # Default: []
    disable:
      - asmdecl
      - assign
      - atomic
      - atomicalign
      - bools
      - buildtag
      - cgocall
      - composites
      - copylocks
      - deepequalerrors
      - errorsas
      - fieldalignment
      - findcall
      - framepointer
      - httpresponse
      - ifaceassert
      - loopclosure
      - lostcancel
      - nilfunc
      - nilness
      - reflectvaluecompare
      - shift
      - shadow
      - sigchanyzer
      - sortslice
      - stdmethods
      - stringintconv
      - structtag
      - testinggoroutine
      - tests
      - unmarshal
      - unreachable
      - unsafeptr
      - unusedwrite

  # https://golangci-lint.run/usage/linters/#staticcheck
  staticcheck:
    # Select the Go version to target.
    # Default: "1.13"
    # Deprecated: use the global `run.go` instead.
    go: "1.15"
    # SAxxxx checks in https://staticcheck.io/docs/configuration/options/#checks
    # Default: ["*"]
    checks:
      [
        "all",
        "-SA1019",
        "-SA4015",
        "-SA1029",
        "-SA1016",
        "-SA9003",
        "-SA4006",
        "-SA6003",
        "-SA1004",
        "-SA4009",
        "-SA6002",
        "-SA4017",
        "-SA4021",
        "-SA1006",
        "-SA4010",
      ]

  # https://golangci-lint.run/usage/linters/#gofmt
  gofmt:
    # Simplify code: gofmt with `-s` option.
    # Default: true
    simplify: true
    # Apply the rewrite rules to the source before reformatting.
    # https://pkg.go.dev/cmd/gofmt
    # Default: []
    rewrite-rules: []

  # https://golangci-lint.run/usage/linters/#gci
  gci:
    # Section configuration to compare against.
    # Section names are case-insensitive and may contain parameters in ().
    # The default order of sections is `standard > default > custom > blank > dot`,
    # If `custom-order` is `true`, it follows the order of `sections` option.
    # Default: ["standard", "default"]
    sections:
      - standard # Standard section: captures all standard packages.
      - default # Default section: contains all imports that could not be matched to another section type.
      - prefix(github.com/polarismesh/polaris) # Custom section: groups all imports with the specified Prefix.
      #- blank # Blank section: contains all blank imports. This section is not present unless explicitly enabled.
      #- dot # Dot section: contains all dot imports. This section is not present unless explicitly enabled.
    # Skip generated files.
    # Default: true
    skip-generated: true
    # Enable custom order of sections.
    # If `true`, make the section order the same as the order of `sections`.
    # Default: false
    custom-order: true

  # https://golangci-lint.run/usage/linters/#whitespace
  whitespace:
    # Enforces newlines (or comments) after every multi-line if statement.
    # Default: false
    multi-if: false
    # Enforces newlines (or comments) after every multi-line function signature.
    # Default: false
    multi-func: false