docs: hide system flags and refactor generator (#42)

Makefile

@@ -19,7 +19,6 @@ GOLANGCI_LINT_PACKAGE ?= github.com/golangci/golangci-lint/cmd/golangci-lint@$(G
 XGO_PACKAGE ?= src.techknowlogick.com/xgo@latest
 GOTESTSUM_PACKAGE ?= gotest.tools/gotestsum@latest
 
-GENERATE ?=
 XGO_VERSION := go-1.22.x
 XGO_TARGETS ?= linux/amd64,linux/arm-6,linux/arm-7,linux/arm64
 
@@ -65,11 +64,7 @@ lint: golangci-lint
 
 .PHONY: generate
 generate:
-	$(GO) generate $(GENERATE)
+	$(GO) generate $(PACKAGES)
-
-.PHONY: generate-docs
-generate-docs:
-	$(GO) generate ./cmd/$(EXECUTABLE)/flags.go
 
 .PHONY: test
 test:

cmd/wp-gitea-release/docs.go

@@ -1,58 +0,0 @@
-//go:build generate
-// +build generate
-
-package main
-
-import (
-	"bytes"
-	"embed"
-	"fmt"
-	"os"
-	"text/template"
-
-	"github.com/thegeeklab/wp-gitea-release/plugin"
-	"github.com/thegeeklab/wp-plugin-go/docs"
-	wp "github.com/thegeeklab/wp-plugin-go/plugin"
-	wp_template "github.com/thegeeklab/wp-plugin-go/template"
-	"github.com/urfave/cli/v2"
-)
-
-//go:embed templates/docs-data.yaml.tmpl
-var yamlTemplate embed.FS
-
-func main() {
-	settings := &plugin.Settings{}
-	app := &cli.App{
-		Flags: settingsFlags(settings, wp.FlagsPluginCategory),
-	}
-
-	out, err := toYAML(app)
-	if err != nil {
-		panic(err)
-	}
-
-	fi, err := os.Create("../../docs/data/data-raw.yaml")
-	if err != nil {
-		panic(err)
-	}
-	defer fi.Close()
-	if _, err := fi.WriteString(out); err != nil {
-		panic(err)
-	}
-}
-
-func toYAML(app *cli.App) (string, error) {
-	var w bytes.Buffer
-
-	yamlTmpl, err := template.New("docs").Funcs(wp_template.LoadFuncMap()).ParseFS(yamlTemplate, "templates/docs-data.yaml.tmpl")
-	if err != nil {
-		fmt.Println(yamlTmpl)
-		return "", err
-	}
-
-	if err := yamlTmpl.ExecuteTemplate(&w, "docs-data.yaml.tmpl", docs.GetTemplateData(app)); err != nil {
-		return "", err
-	}
-
-	return w.String(), nil
-}

cmd/wp-gitea-release/flags.go

@@ -1,96 +0,0 @@
-package main
-
-import (
-	"github.com/thegeeklab/wp-gitea-release/plugin"
-	"github.com/urfave/cli/v2"
-)
-
-// settingsFlags has the cli.Flags for the plugin.Settings.
-//
-//go:generate go run docs.go flags.go
-func settingsFlags(settings *plugin.Settings, category string) []cli.Flag {
-	return []cli.Flag{
-		&cli.StringFlag{
-			Name:        "api-key",
-			Usage:       "api key to access Gitea API",
-			EnvVars:     []string{"PLUGIN_API_KEY", "GITEA_RELEASE_API_KEY", "GITEA_TOKEN"},
-			Destination: &settings.APIKey,
-			Category:    category,
-			Required:    true,
-		},
-		&cli.StringSliceFlag{
-			Name:     "files",
-			Usage:    "list of files to upload",
-			EnvVars:  []string{"PLUGIN_FILES", "GITEA_RELEASE_FILES"},
-			Category: category,
-		},
-		&cli.StringFlag{
-			Name:        "file-exists",
-			Value:       "overwrite",
-			Usage:       "what to do if file already exist",
-			EnvVars:     []string{"PLUGIN_FILE_EXIST", "GITEA_RELEASE_FILE_EXIST"},
-			Destination: &settings.FileExists,
-			Category:    category,
-		},
-		&cli.StringSliceFlag{
-			Name:        "checksum",
-			Usage:       "generate specific checksums",
-			EnvVars:     []string{"PLUGIN_CHECKSUM", "GITEA_RELEASE_CHECKSUM"},
-			Destination: &settings.Checksum,
-			Category:    category,
-		},
-		&cli.BoolFlag{
-			Name:        "draft",
-			Usage:       "create a draft release",
-			EnvVars:     []string{"PLUGIN_DRAFT", "GITEA_RELEASE_DRAFT"},
-			Destination: &settings.Draft,
-			Category:    category,
-		},
-		&cli.BoolFlag{
-			Name:        "prerelease",
-			Usage:       "set the release as prerelease",
-			EnvVars:     []string{"PLUGIN_PRERELEASE", "GITEA_RELEASE_PRERELEASE"},
-			Destination: &settings.PreRelease,
-			Category:    category,
-		},
-		&cli.StringFlag{
-			Name:     "base-url",
-			Usage:    "URL of the Gitea instance",
-			EnvVars:  []string{"PLUGIN_BASE_URL", "GITEA_RELEASE_BASE_URL"},
-			Category: category,
-			Required: true,
-		},
-		&cli.StringFlag{
-			Name:        "note",
-			Usage:       "file or string with notes for the release",
-			EnvVars:     []string{"PLUGIN_NOTE", "GITEA_RELEASE_NOTE"},
-			Destination: &settings.Note,
-			Category:    category,
-		},
-		&cli.StringFlag{
-			Name:        "title",
-			Usage:       "file or string for the title shown in the Gitea release",
-			EnvVars:     []string{"PLUGIN_TITLE", "GITEA_RELEASE_TITLE", "CI_COMMIT_TAG"},
-			Destination: &settings.Title,
-			DefaultText: "$CI_COMMIT_TAG",
-			Category:    category,
-		},
-		&cli.StringFlag{
-			Name:        "event",
-			Value:       "push",
-			Usage:       "build event",
-			EnvVars:     []string{"CI_PIPELINE_EVENT"},
-			Destination: &settings.Event,
-			DefaultText: "$CI_PIPELINE_EVENT",
-			Category:    category,
-		},
-		&cli.StringFlag{
-			Name:        "commit-ref",
-			Value:       "refs/heads/main",
-			Usage:       "git commit ref",
-			EnvVars:     []string{"CI_COMMIT_REF"},
-			Destination: &settings.CommitRef,
-			Category:    category,
-		},
-	}
-}

cmd/wp-gitea-release/main.go

@@ -1,11 +1,7 @@
 package main
 
 import (
-	"fmt"
-
 	"github.com/thegeeklab/wp-gitea-release/plugin"
-
-	wp "github.com/thegeeklab/wp-plugin-go/plugin"
 )
 
 //nolint:gochecknoglobals
@@ -15,14 +11,5 @@ var (
 )
 
 func main() {
-	settings := &plugin.Settings{}
+	plugin.New(nil, BuildVersion, BuildDate).Run()
-	options := wp.Options{
-		Name:            "wp-gitea-release",
-		Description:     "Publish files and artifacts to Gitea releases",
-		Version:         BuildVersion,
-		VersionMetadata: fmt.Sprintf("date=%s", BuildDate),
-		Flags:           settingsFlags(settings, wp.FlagsPluginCategory),
-	}
-
-	plugin.New(options, settings).Run()
 }

cmd/wp-gitea-release/templates/docs-data.yaml.tmpl

@@ -1,18 +0,0 @@
----
-{{- if .GlobalArgs }}
-properties:
-{{- range $v := .GlobalArgs }}
-  - name: {{ $v.Name }}
-    {{- with $v.Description }}
-    description: |
-      {{ . | ToSentence }}
-    {{- end }}
-    {{- with $v.Type }}
-    type: {{ . }}
-    {{- end }}
-    {{- with $v.Default }}
-    defaultValue: {{ . }}
-    {{- end }}
-    required: {{ default false $v.Required }}
-{{ end -}}
-{{ end -}}

docs/data/data.yaml

@@ -38,6 +38,22 @@ properties:
     type: list
     required: false
 
+  - name: insecure_skip_verify
+    description: |
+      Skip SSL verification.
+
+      Activating this option is insecure and should be avoided in most cases.
+    type: bool
+    defaultValue: false
+    required: false
+
+  - name: log_level
+    description: |
+      Plugin log level.
+    type: string
+    defaultValue: "info"
+    required: false
+
   - name: note
     description: |
       File or string with notes for the release.

go.mod

@@ -5,9 +5,10 @@ go 1.22
 require (
 	code.gitea.io/sdk/gitea v0.18.0
 	github.com/rs/zerolog v1.32.0
-	github.com/thegeeklab/wp-plugin-go v1.7.1
+	github.com/stretchr/testify v1.9.0
+	github.com/thegeeklab/wp-plugin-go/v2 v2.3.1
 	github.com/urfave/cli/v2 v2.27.2
-	golang.org/x/crypto v0.22.0
+	golang.org/x/crypto v0.23.0
 )
 
 require (
@@ -15,6 +16,7 @@ require (
 	github.com/Masterminds/semver/v3 v3.2.1 // indirect
 	github.com/Masterminds/sprig/v3 v3.2.3 // indirect
 	github.com/cpuguy83/go-md2man/v2 v2.0.4 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/davidmz/go-pageant v1.0.2 // indirect
 	github.com/go-fed/httpsig v1.1.0 // indirect
 	github.com/google/uuid v1.1.1 // indirect
@@ -26,10 +28,12 @@ require (
 	github.com/mattn/go-isatty v0.0.19 // indirect
 	github.com/mitchellh/copystructure v1.0.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/shopspring/decimal v1.2.0 // indirect
 	github.com/spf13/cast v1.3.1 // indirect
 	github.com/xrash/smetrics v0.0.0-20240312152122-5f08fbb34913 // indirect
-	golang.org/x/net v0.24.0 // indirect
+	golang.org/x/net v0.25.0 // indirect
-	golang.org/x/sys v0.19.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -54,8 +54,8 @@ github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXf
 github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-github.com/thegeeklab/wp-plugin-go v1.7.1 h1:zfR/rfNPuyVhXJu1fsLfp4+Mz2pTf6WwW/mIqw9750I=
+github.com/thegeeklab/wp-plugin-go/v2 v2.3.1 h1:ARwYgTPZ5iPsmOenmqcCf8TjiEe8wBOHKO7H/Xshe48=
-github.com/thegeeklab/wp-plugin-go v1.7.1/go.mod h1:Ixi5plt9tpFGTu6yc/Inm5DcDpp3xPTeohfr86gf2EU=
+github.com/thegeeklab/wp-plugin-go/v2 v2.3.1/go.mod h1:0t8M8txtEFiaB6RqLX8vLrxkqAo5FT5Hx7dztN592D4=
 github.com/urfave/cli/v2 v2.27.2 h1:6e0H+AkS+zDckwPCUrZkKX38mRaau4nL2uipkJpbkcI=
 github.com/urfave/cli/v2 v2.27.2/go.mod h1:g0+79LmHHATl7DAcHO99smiR/T7uGLw84w8Y42x+4eM=
 github.com/xrash/smetrics v0.0.0-20240312152122-5f08fbb34913 h1:+qGGcbkzsfDQNPPe9UDgpxAWQrhbbBXOYJFQDq/dtJw=
@@ -66,16 +66,16 @@ golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20210513164829-c07d793c2f9a/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
 golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
 golang.org/x/crypto v0.3.0/go.mod h1:hebNnKkNXi2UzZN1eVRvBB7co0a+JxK6XbPiWVs/3J4=
-golang.org/x/crypto v0.22.0 h1:g1v0xeRhjcugydODzvb3mEM9SQ0HGp9s/nh3COQ/C30=
+golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI=
-golang.org/x/crypto v0.22.0/go.mod h1:vr6Su+7cTlO45qkww3VDJlzDn0ctJvRgYbC2NvXHt+M=
+golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
 golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY=
-golang.org/x/net v0.24.0 h1:1PcaxkF854Fu3+lvBIx5SYn9wRlBzzcnHZSiaFFAb0w=
+golang.org/x/net v0.25.0 h1:d/OCCoBEUq33pjydKrGQhw7IlUPI2Oylr+8qLx49kac=
-golang.org/x/net v0.24.0/go.mod h1:2Q7sJY5mzlzWjKtYUEXSlBWCdyaioyXzRB2RtU8KVE8=
+golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
@@ -88,13 +88,13 @@ golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
+golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y=
-golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
-golang.org/x/term v0.19.0 h1:+ThwsDv+tYfnJFhF4L8jITxu1tdTWRTZpdsWgEgjL6Q=
+golang.org/x/term v0.20.0 h1:VnkxpohqXaOBYJtBmEppKUG6mXpi+4O6purfc2+sMhw=
-golang.org/x/term v0.19.0/go.mod h1:2CuTdWZ7KHSQwUzKva0cbMg6q2DMI3Mmxp+gKJbskEk=
+golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
@@ -103,6 +103,7 @@ golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGm
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=

internal/doc/main.go

@@ -0,0 +1,42 @@
+//go:build generate
+// +build generate
+
+package main
+
+import (
+	"context"
+	"flag"
+	"net/http"
+	"os"
+	"time"
+
+	"github.com/thegeeklab/wp-gitea-release/plugin"
+	"github.com/thegeeklab/wp-plugin-go/v2/docs"
+	"github.com/thegeeklab/wp-plugin-go/v2/template"
+)
+
+func main() {
+	tmpl := "https://raw.githubusercontent.com/thegeeklab/woodpecker-plugins/main/templates/docs-data.yaml.tmpl"
+	client := http.Client{
+		Timeout: 30 * time.Second,
+	}
+
+	p := plugin.New(nil)
+
+	out, err := template.Render(context.Background(), client, tmpl, docs.GetTemplateData(p.App))
+	if err != nil {
+		panic(err)
+	}
+
+	outputFile := flag.String("output", "", "Output file path")
+	flag.Parse()
+
+	if *outputFile == "" {
+		panic("no output file specified")
+	}
+
+	err = os.WriteFile(*outputFile, []byte(out), 0o644)
+	if err != nil {
+		panic(err)
+	}
+}

plugin/impl.go

@@ -10,7 +10,7 @@ import (
 	"strings"
 
 	"code.gitea.io/sdk/gitea"
-	"github.com/thegeeklab/wp-plugin-go/file"
+	"github.com/thegeeklab/wp-plugin-go/v2/file"
 )
 
 var (
@@ -81,7 +81,7 @@ func (p *Plugin) Execute() error {
 		return err
 	}
 
-	rc := releaseClient{
+	r := &Release{
 		Client:     client,
 		Owner:      p.Metadata.Repository.Owner,
 		Repo:       p.Metadata.Repository.Name,
@@ -93,12 +93,12 @@ func (p *Plugin) Execute() error {
 		Note:       p.Settings.Note,
 	}
 
-	release, err := rc.buildRelease()
+	release, err := r.buildRelease()
 	if err != nil {
 		return fmt.Errorf("failed to create the release: %w", err)
 	}
 
-	if err := rc.uploadFiles(release.ID, p.Settings.files); err != nil {
+	if err := r.uploadFiles(release.ID, p.Settings.files); err != nil {
 		return fmt.Errorf("failed to upload the files: %w", err)
 	}
 
@@ -136,7 +136,7 @@ func (p *Plugin) FlagsFromContext() error {
 	if len(p.Settings.Checksum.Value()) > 0 {
 		var err error
 
-		files, err = writeChecksums(files, p.Settings.Checksum.Value())
+		files, err = WriteChecksums(files, p.Settings.Checksum.Value(), "")
 		if err != nil {
 			return fmt.Errorf("failed to write checksums: %w", err)
 		}

plugin/plugin.go

@@ -1,12 +1,15 @@
 package plugin
 
 import (
+	"fmt"
 	"net/url"
 
-	wp "github.com/thegeeklab/wp-plugin-go/plugin"
+	wp "github.com/thegeeklab/wp-plugin-go/v2/plugin"
 	"github.com/urfave/cli/v2"
 )
 
+//go:generate go run ../internal/doc/main.go -output=../docs/data/data-raw.yaml
+
 // Plugin implements provide the plugin.
 type Plugin struct {
 	*wp.Plugin
@@ -29,13 +32,120 @@ type Settings struct {
 	files   []string
 }
 
-func New(options wp.Options, settings *Settings) *Plugin {
+func New(e wp.ExecuteFunc, build ...string) *Plugin {
-	p := &Plugin{}
+	p := &Plugin{
+		Settings: &Settings{},
+	}
 
-	options.Execute = p.run
+	options := wp.Options{
+		Name:                "wp-gitea-release",
+		Description:         "Publish files and artifacts to Gitea releases",
+		Flags:               Flags(p.Settings, wp.FlagsPluginCategory),
+		Execute:             p.run,
+		HideWoodpeckerFlags: true,
+	}
+
+	if len(build) > 0 {
+		options.Version = build[0]
+	}
+
+	if len(build) > 1 {
+		options.VersionMetadata = fmt.Sprintf("date=%s", build[1])
+	}
+
+	if e != nil {
+		options.Execute = e
+	}
 
 	p.Plugin = wp.New(options)
-	p.Settings = settings
 
 	return p
 }
+
+// Flags returns a slice of CLI flags for the plugin.
+func Flags(settings *Settings, category string) []cli.Flag {
+	return []cli.Flag{
+		&cli.StringFlag{
+			Name:        "api-key",
+			Usage:       "api key to access Gitea API",
+			EnvVars:     []string{"PLUGIN_API_KEY", "GITEA_RELEASE_API_KEY", "GITEA_TOKEN"},
+			Destination: &settings.APIKey,
+			Category:    category,
+			Required:    true,
+		},
+		&cli.StringSliceFlag{
+			Name:     "files",
+			Usage:    "list of files to upload",
+			EnvVars:  []string{"PLUGIN_FILES", "GITEA_RELEASE_FILES"},
+			Category: category,
+		},
+		&cli.StringFlag{
+			Name:        "file-exists",
+			Value:       "overwrite",
+			Usage:       "what to do if file already exist",
+			EnvVars:     []string{"PLUGIN_FILE_EXIST", "GITEA_RELEASE_FILE_EXIST"},
+			Destination: &settings.FileExists,
+			Category:    category,
+		},
+		&cli.StringSliceFlag{
+			Name:        "checksum",
+			Usage:       "generate specific checksums",
+			EnvVars:     []string{"PLUGIN_CHECKSUM", "GITEA_RELEASE_CHECKSUM"},
+			Destination: &settings.Checksum,
+			Category:    category,
+		},
+		&cli.BoolFlag{
+			Name:        "draft",
+			Usage:       "create a draft release",
+			EnvVars:     []string{"PLUGIN_DRAFT", "GITEA_RELEASE_DRAFT"},
+			Destination: &settings.Draft,
+			Category:    category,
+		},
+		&cli.BoolFlag{
+			Name:        "prerelease",
+			Usage:       "set the release as prerelease",
+			EnvVars:     []string{"PLUGIN_PRERELEASE", "GITEA_RELEASE_PRERELEASE"},
+			Destination: &settings.PreRelease,
+			Category:    category,
+		},
+		&cli.StringFlag{
+			Name:     "base-url",
+			Usage:    "URL of the Gitea instance",
+			EnvVars:  []string{"PLUGIN_BASE_URL", "GITEA_RELEASE_BASE_URL"},
+			Category: category,
+			Required: true,
+		},
+		&cli.StringFlag{
+			Name:        "note",
+			Usage:       "file or string with notes for the release",
+			EnvVars:     []string{"PLUGIN_NOTE", "GITEA_RELEASE_NOTE"},
+			Destination: &settings.Note,
+			Category:    category,
+		},
+		&cli.StringFlag{
+			Name:        "title",
+			Usage:       "file or string for the title shown in the Gitea release",
+			EnvVars:     []string{"PLUGIN_TITLE", "GITEA_RELEASE_TITLE", "CI_COMMIT_TAG"},
+			Destination: &settings.Title,
+			DefaultText: "$CI_COMMIT_TAG",
+			Category:    category,
+		},
+		&cli.StringFlag{
+			Name:        "event",
+			Value:       "push",
+			Usage:       "build event",
+			EnvVars:     []string{"CI_PIPELINE_EVENT"},
+			Destination: &settings.Event,
+			DefaultText: "$CI_PIPELINE_EVENT",
+			Category:    category,
+		},
+		&cli.StringFlag{
+			Name:        "commit-ref",
+			Value:       "refs/heads/main",
+			Usage:       "git commit ref",
+			EnvVars:     []string{"CI_COMMIT_REF"},
+			Destination: &settings.CommitRef,
+			Category:    category,
+		},
+	}
+}

plugin/release.go

@@ -15,8 +15,8 @@ var (
 	ErrFileExists      = errors.New("asset file already exist")
 )
 
-// Release holds ties the Woodpecker env data and gitea client together.
+// Release represents a release for a Gitea repository.
-type releaseClient struct {
+type Release struct {
 	*gitea.Client
 	Owner      string
 	Repo       string
@@ -28,7 +28,8 @@ type releaseClient struct {
 	Note       string
 }
 
-func (rc *releaseClient) buildRelease() (*gitea.Release, error) {
+// buildRelease attempts to retrieve an existing release by the specified tag name.
+func (rc *Release) buildRelease() (*gitea.Release, error) {
 	// first attempt to get a release by that tag
 	release, err := rc.getRelease()
 
@@ -47,7 +48,8 @@ func (rc *releaseClient) buildRelease() (*gitea.Release, error) {
 	return release, nil
 }
 
-func (rc *releaseClient) getRelease() (*gitea.Release, error) {
+// getRelease retrieves the release with the specified tag name from the repository.
+func (rc *Release) getRelease() (*gitea.Release, error) {
 	releases, _, err := rc.Client.ListReleases(rc.Owner, rc.Repo, gitea.ListReleasesOptions{})
 	if err != nil {
 		return nil, err
@@ -64,7 +66,8 @@ func (rc *releaseClient) getRelease() (*gitea.Release, error) {
 	return nil, fmt.Errorf("%w: %s", ErrReleaseNotFound, rc.Tag)
 }
 
-func (rc *releaseClient) newRelease() (*gitea.Release, error) {
+// newRelease creates a new release on the repository with the specified options.
+func (rc *Release) newRelease() (*gitea.Release, error) {
 	r := gitea.CreateReleaseOption{
 		TagName:      rc.Tag,
 		IsDraft:      rc.Draft,
@@ -83,7 +86,16 @@ func (rc *releaseClient) newRelease() (*gitea.Release, error) {
 	return release, nil
 }
 
-func (rc *releaseClient) uploadFiles(releaseID int64, files []string) error {
+// uploadFiles uploads the specified files as attachments to the release with the given ID.
+// It first checks for any existing attachments with the same names,
+// and handles them according to the FileExists option:
+//
+// - "overwrite": overwrites the existing attachment
+// - "fail": returns an error if the file already exists
+// - "skip": skips uploading the file and logs a warning
+//
+// If there are no conflicts, it uploads the new files as attachments to the release.
+func (rc *Release) uploadFiles(releaseID int64, files []string) error {
 	attachments, _, err := rc.Client.ListReleaseAttachments(
 		rc.Owner,
 		rc.Repo,

plugin/util.go

@@ -11,7 +11,7 @@ import (
 	"hash/crc32"
 	"io"
 	"os"
-	"strconv"
+	"path/filepath"
 
 	"golang.org/x/crypto/blake2b"
 	"golang.org/x/crypto/blake2s"
@@ -19,7 +19,9 @@ import (
 
 var ErrHashMethodNotSupported = errors.New("hash method not supported")
 
-func checksum(r io.Reader, method string) (string, error) {
+// Checksum calculates the checksum of the given io.Reader using the specified hash method.
+// Supported hash methods are: "md5", "sha1", "sha256", "sha512", "adler32", "crc32", "blake2b", "blake2s".
+func Checksum(r io.Reader, method string) (string, error) {
 	b, err := io.ReadAll(r)
 	if err != nil {
 		return "", err
@@ -37,9 +39,9 @@ func checksum(r io.Reader, method string) (string, error) {
 	case "sha512":
 		return fmt.Sprintf("%x", sha512.Sum512(b)), nil
 	case "adler32":
-		return strconv.FormatUint(uint64(adler32.Checksum(b)), 10), nil
+		return fmt.Sprintf("%08x", adler32.Checksum(b)), nil
 	case "crc32":
-		return strconv.FormatUint(uint64(crc32.ChecksumIEEE(b)), 10), nil
+		return fmt.Sprintf("%08x", crc32.ChecksumIEEE(b)), nil
 	case "blake2b":
 		return fmt.Sprintf("%x", blake2b.Sum256(b)), nil
 	case "blake2s":
@@ -49,44 +51,44 @@ func checksum(r io.Reader, method string) (string, error) {
 	return "", fmt.Errorf("%w: %q", ErrHashMethodNotSupported, method)
 }
 
-func writeChecksums(files, methods []string) ([]string, error) {
+// WriteChecksums calculates the checksums for the given files using the specified hash methods,
-	checksums := make(map[string][]string)
+// and writes the checksums to files named after the hash methods (e.g. "md5sum.txt", "sha256sum.txt").
+func WriteChecksums(files, methods []string, outDir string) ([]string, error) {
+	if len(files) == 0 {
+		return files, nil
+	}
+
+	checksumFiles := make([]string, 0)
 
 	for _, method := range methods {
+		checksumFile := filepath.Join(outDir, method+"sum.txt")
+
+		f, err := os.Create(checksumFile)
+		if err != nil {
+			return nil, err
+		}
+		defer f.Close()
+
 		for _, file := range files {
 			handle, err := os.Open(file)
 			if err != nil {
 				return nil, fmt.Errorf("failed to read %q artifact: %w", file, err)
 			}
+			defer handle.Close()
 
-			hash, err := checksum(handle, method)
+			hash, err := Checksum(handle, method)
 			if err != nil {
 				return nil, fmt.Errorf("could not checksum %q file: %w", file, err)
 			}
 
-			checksums[method] = append(checksums[method], hash, file)
+			_, err = f.WriteString(fmt.Sprintf("%s  %s\n", hash, file))
-		}
+			if err != nil {
-	}
-
-	for method, results := range checksums {
-		filename := method + "sum.txt"
-
-		f, err := os.Create(filename)
-		if err != nil {
-			return nil, err
-		}
-
-		for i := 0; i < len(results); i += 2 {
-			hash := results[i]
-			file := results[i+1]
-
-			if _, err := f.WriteString(fmt.Sprintf("%s  %s\n", hash, file)); err != nil {
 				return nil, err
 			}
 		}
 
-		files = append(files, filename)
+		checksumFiles = append(checksumFiles, checksumFile)
 	}
 
-	return files, nil
+	return append(files, checksumFiles...), nil
 }

plugin/util_test.go

@@ -0,0 +1,204 @@
+package plugin
+
+import (
+	"bytes"
+	"io"
+	"os"
+	"path/filepath"
+	"sort"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+//nolint:lll
+func TestChecksum(t *testing.T) {
+	tests := []struct {
+		name    string
+		method  string
+		input   []byte
+		want    string
+		wantErr bool
+	}{
+		{
+			name:    "md5",
+			method:  "md5",
+			input:   []byte("hello"),
+			want:    "5d41402abc4b2a76b9719d911017c592",
+			wantErr: false,
+		},
+		{
+			name:    "sha1",
+			method:  "sha1",
+			input:   []byte("hello"),
+			want:    "aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d",
+			wantErr: false,
+		},
+		{
+			name:    "sha256",
+			method:  "sha256",
+			input:   []byte("hello"),
+			want:    "2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824",
+			wantErr: false,
+		},
+		{
+			name:    "sha512",
+			method:  "sha512",
+			input:   []byte("hello"),
+			want:    "9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2dff72519673ca72323c3d99ba5c11d7c7acc6e14b8c5da0c4663475c2e5c3adef46f73bcdec043",
+			wantErr: false,
+		},
+		{
+			name:    "adler32",
+			method:  "adler32",
+			input:   []byte("hello"),
+			want:    "062c0215",
+			wantErr: false,
+		},
+		{
+			name:    "crc32",
+			method:  "crc32",
+			input:   []byte("hello"),
+			want:    "3610a686",
+			wantErr: false,
+		},
+		{
+			name:    "blake2b",
+			method:  "blake2b",
+			input:   []byte("hello"),
+			want:    "324dcf027dd4a30a932c441f365a25e86b173defa4b8e58948253471b81b72cf",
+			wantErr: false,
+		},
+		{
+			name:    "blake2s",
+			method:  "blake2s",
+			input:   []byte("hello"),
+			want:    "19213bacc58dee6dbde3ceb9a47cbb330b3d86f8cca8997eb00be456f140ca25",
+			wantErr: false,
+		},
+		{
+			name:    "unsupported_method",
+			method:  "unsupported",
+			input:   []byte("hello"),
+			want:    "",
+			wantErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			r := bytes.NewReader(tt.input)
+
+			sum, err := Checksum(r, tt.method)
+			if tt.wantErr {
+				assert.Error(t, err)
+
+				return
+			}
+
+			assert.NoError(t, err)
+			assert.Equal(t, tt.want, sum)
+		})
+	}
+}
+
+func BenchmarkChecksum(b *testing.B) {
+	input := []byte("hello")
+	methods := []string{"md5", "sha1", "sha256", "sha512", "adler32", "crc32", "blake2b", "blake2s"}
+
+	for _, method := range methods {
+		b.Run(method, func(b *testing.B) {
+			r := bytes.NewReader(input)
+
+			b.ResetTimer()
+
+			for i := 0; i < b.N; i++ {
+				_, _ = Checksum(r, method)
+				_, _ = r.Seek(0, io.SeekStart)
+			}
+		})
+	}
+}
+
+func TestWriteChecksums(t *testing.T) {
+	tempDir := t.TempDir()
+	files := []string{
+		filepath.Join(tempDir, "file1.txt"),
+		filepath.Join(tempDir, "file2.txt"),
+	}
+
+	for _, file := range files {
+		err := os.WriteFile(file, []byte("hello"), 0o600)
+		if err != nil {
+			t.Fatalf("failed to create test file: %v", err)
+		}
+	}
+
+	methods := []string{"md5", "sha256"}
+
+	tests := []struct {
+		name    string
+		tempDir string
+		files   []string
+		methods []string
+		want    []string
+		wantErr bool
+	}{
+		{
+			name:    "valid input",
+			tempDir: tempDir,
+			files:   files,
+			methods: methods,
+			want: []string{
+				files[0],
+				files[1],
+				filepath.Join(tempDir, "md5sum.txt"),
+				filepath.Join(tempDir, "sha256sum.txt"),
+			},
+			wantErr: false,
+		},
+		{
+			name:    "empty files",
+			tempDir: tempDir,
+			files:   []string{},
+			methods: methods,
+			want:    []string{},
+			wantErr: false,
+		},
+		{
+			name:    "empty methods",
+			tempDir: tempDir,
+			files:   files,
+			methods: []string{},
+			want: []string{
+				files[0],
+				files[1],
+			},
+			wantErr: false,
+		},
+		{
+			name:    "non existent file",
+			tempDir: tempDir,
+			files:   append(files, filepath.Join(tempDir, "non_existent.txt")),
+			methods: methods,
+			want:    nil,
+			wantErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result, err := WriteChecksums(tt.files, tt.methods, tt.tempDir)
+			if tt.wantErr {
+				assert.Error(t, err)
+
+				return
+			}
+
+			assert.NoError(t, err)
+			sort.Strings(result)
+			sort.Strings(tt.want)
+			assert.Equal(t, tt.want, result)
+		})
+	}
+}